阅读说明：本技术 一种冷却塔湿球温度逼近度实时监测方法及装置 (Method and device for monitoring temperature approximation degree of wet bulb of cooling tower in real time ) 是由 程卓明 于 2020-12-30 设计创作，主要内容包括：本发明适用于能源技术领域,提供了一种冷却塔湿球温度逼近度实时监测方法、装置,其中,所述方法包括：获取制冷机冷凝器的当前进口水温；获取大气环境的当前干球温度和当前湿球温度；基于所述进口水温和所述干球温度,计算所述冷却塔的下塔水温；利用所述湿球温度减去所述下塔水温,得到冷却塔湿球温度逼近度,并显示所述冷却塔湿球温度逼近度。本发明通过计算冷却塔的下塔水温,从而实现了对冷却塔湿球温度逼近度的实时监测,对冷却塔散热异常起到提示作用。(The invention is suitable for the technical field of energy, and provides a method and a device for monitoring the temperature approximation degree of a wet bulb of a cooling tower in real time, wherein the method comprises the following steps: acquiring the current inlet water temperature of a condenser of the refrigerator; acquiring the current dry bulb temperature and the current wet bulb temperature of the atmospheric environment; calculating a lower tower water temperature of the cooling tower based on the inlet water temperature and the dry bulb temperature; and subtracting the lower tower water temperature from the wet bulb temperature to obtain a cooling tower wet bulb temperature approximation degree, and displaying the cooling tower wet bulb temperature approximation degree. According to the invention, the lower tower water temperature of the cooling tower is calculated, so that the real-time monitoring of the cooling tower wet bulb temperature approximation degree is realized, and the prompt effect on abnormal cooling tower heat dissipation is realized.)

1. A real-time monitoring method for the temperature approximation degree of a wet bulb of a cooling tower is characterized by comprising the following steps:

acquiring the current inlet water temperature of a condenser of the refrigerator;

acquiring the current dry bulb temperature and the current wet bulb temperature of the atmospheric environment;

calculating a lower tower water temperature of the cooling tower based on the inlet water temperature and the dry bulb temperature;

subtracting the lower tower water temperature from the wet bulb temperature to obtain a cooling tower wet bulb temperature approximation degree, and displaying the cooling tower wet bulb temperature approximation degree, wherein a calculation formula of the cooling tower wet bulb temperature approximation degree is as follows:

T＝T_atm-T_cwIn+k×(T_atmosp-T_cwIn)，

wherein T is the wet bulb temperature approach, T_cwInIs the inlet water temperature, T_atmospIs the dry bulb temperature, T_atmAnd k is the temperature coefficient of the lower tower.

2. The method of claim 1, wherein after subtracting the lower tower water temperature from the wet-bulb temperature to obtain a cooling tower wet-bulb temperature approximation and displaying the cooling tower wet-bulb temperature approximation, further comprising:

judging whether the approximation degree of the wet bulb temperature of the cooling tower meets a preset condition or not;

if not, sending out early warning information to prompt the user.

3. The method according to claim 1, wherein the lower column temperature coefficient k is calculated by the formula:

k＝K×F/(Cp×M)；

k is the heat dissipation coefficient of the ambient atmosphere and the cooling water pipe, F is the heat dissipation area of the cooling water pipe, Cp is the constant-pressure specific heat capacity of water, and M is the mass flow of water.

4. The method of claim 1, wherein calculating a lower tower water temperature of the cooling tower based on the inlet water temperature and the dry bulb temperature comprises:

calculating the heat dissipation capacity of the cooling water pipe based on a heat transfer formula;

calculating the temperature difference delta t of the rising of the cooling water temperature corresponding to the heat dissipation capacity of the cooling water pipe according to the heat dissipation capacity of the cooling water pipe;

and calculating the lower tower water temperature of the cooling tower according to the inlet water temperature, the dry-bulb temperature and the temperature difference.

5. The method of claim 4, wherein the heat dissipation of the cooling water pipe is calculated by the formula:

Q＝K×F×(T_atmosp-T_cwIn)；

wherein Q is the heat dissipation capacity of the cooling water pipe, K is the heat dissipation coefficient of the ambient atmosphere and the cooling water pipe, F is the heat dissipation area of the cooling water pipe, and T is_atmospIs the ambient atmospheric dry bulb temperature, T_cwInIs the inlet water temperature.

6. The method according to claim 5, characterized in that the formula for the temperature difference Δ t is:

△t＝T_cwIn-T_tower＝Q/(Cp×M)，

then T_cwIn-T_tower＝K×F×(T_atmosp-T_cwIn)/(Cp×M)；

Wherein, T_towerThe temperature of the lower tower water of the cooling tower is Cp, the constant pressure specific heat capacity of the water and the mass flow rate of the water.

7. The method of claim 6, wherein the lower column water temperature of the cooling column is calculated by the formula:

T_tower＝T_cwIn-K×F×(T_atmosp-T_cwIn)/(Cp×M)。

8. a device for monitoring the temperature approximation of a wet bulb of a cooling tower in real time is characterized by comprising:

the inlet water temperature acquisition module is used for acquiring the current inlet water temperature of the condenser of the refrigerator;

the environment temperature acquisition module is used for acquiring the current dry bulb temperature and the current wet bulb temperature of the atmospheric environment;

the lower tower water temperature calculating module is used for calculating the lower tower water temperature of the cooling tower based on the inlet water temperature and the dry bulb temperature;

the approximation degree calculating module is used for subtracting the lower tower water temperature from the wet bulb temperature to obtain a cooling tower wet bulb temperature approximation degree, and displaying the cooling tower wet bulb temperature approximation degree, wherein a calculation formula of the cooling tower wet bulb temperature approximation degree is as follows:

T＝T_atm-T_cwIn+k×(T_atmosp-T_cwIn)，

wherein T is the wet bulb temperature approach, T_cwInIs the inlet water temperature, T_atmospIs the dry bulb temperature, T_atmAnd k is the temperature coefficient of the lower tower.

9. An apparatus comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 7 when executing the computer program.

10. A storage medium storing a computer program, characterized in that the computer program realizes the steps of the method according to any one of claims 1 to 7 when executed by a processor.

Technical Field

The invention belongs to the technical field of energy, and particularly relates to a method and a device for monitoring the temperature approximation degree of wet bulbs of a cooling tower in real time.

Background

The heat dissipation effect of the cooling tower can be evaluated by the approximation degree of the wet bulb temperature of the cooling tower, and the approximation degree of the wet bulb temperature of the cooling tower can be calculated by subtracting the lower tower water temperature of the cooling tower to calculate the wet bulb temperature of the atmospheric environment. When the temperature approach degree of the wet bulb of the cooling tower is higher than a reasonable range, the cooling effect of the cooling tower is poor, so that the temperature of the cooling water of the refrigerating machine is higher, the high pressure of the refrigerating machine is higher, and finally, the energy consumption of the refrigerating machine is overlarge and even potential safety hazards are generated. The reason for the phenomenon of overlarge wet bulb temperature approximation degree is that the inside of a cooling tower is blocked, organic matters are bred to seriously affect heat dissipation, or the cooling tower is poor in cooling effect due to the conditions of ageing of fillers and the like. At this point, the cooling tower needs to be cleaned to recover its heat dissipation capability. However, the cooling tower in the market usually does not have a controller and a control cabinet, and a sensor for measuring the temperature of the lower tower water is not arranged, so that the heat dissipation condition of the cooling tower cannot be obtained in real time, and the digital work for evaluating the heat dissipation effect of the cooling tower cannot be carried out. Meanwhile, a water receiving tray of the lower tower of the cooling tower is generally arranged on the roof and needs to be constructed by breaking a pipe, so that how to monitor the temperature approach of the wet bulb of the cooling tower is a technical problem to be solved at present.

Disclosure of Invention

In view of this, the invention provides a method and a device for monitoring the approximation degree of the wet bulb temperature of a cooling tower in real time, so as to solve the problem that the approximation degree of the wet bulb temperature of the cooling tower cannot be monitored in real time due to the fact that the lower tower temperature of the cooling tower is objectively difficult to acquire in the prior art.

In a first aspect of the embodiments of the present invention, a method for monitoring a wet bulb temperature approach degree of a cooling tower in real time is provided, including:

acquiring the current inlet water temperature of a condenser of the refrigerator;

acquiring the current dry bulb temperature and the current wet bulb temperature of the atmospheric environment;

calculating a lower tower water temperature of the cooling tower based on the inlet water temperature and the dry bulb temperature;

subtracting the lower tower water temperature from the wet bulb temperature to obtain a cooling tower wet bulb temperature approximation degree, and displaying the cooling tower wet bulb temperature approximation degree, wherein a calculation formula of the cooling tower wet bulb temperature approximation degree is as follows:

T＝T_cwIn-k×(T_atmosp-T_cwIn)-T_atm，

wherein T is the wet bulb temperature approach, T_cwInIs the inlet water temperature, T_atmospIs the dry bulb temperature, T_atmAnd k is the temperature coefficient of the lower tower.

In some embodiments, after subtracting the lower tower water temperature from the wet-bulb temperature to obtain a cooling tower wet-bulb temperature approximation, and displaying the cooling tower wet-bulb temperature approximation, the method further includes:

judging whether the approximation degree of the wet bulb temperature of the cooling tower meets a preset condition or not;

if not, sending out early warning information to prompt the user.

In some embodiments, the lower column temperature coefficient k is calculated by the formula:

k＝K×F/(Cp×M)；

k is the heat dissipation coefficient of the ambient atmosphere and the cooling water pipe, F is the heat dissipation area of the cooling water pipe, Cp is the constant-pressure specific heat capacity of water, and M is the mass flow of water.

In some embodiments, calculating the lower tower water temperature of the cooling tower based on the inlet water temperature and the dry bulb temperature includes:

calculating the heat dissipation capacity of the cooling water pipe based on a heat transfer formula;

calculating the temperature difference delta t of the rising of the cooling water temperature corresponding to the heat dissipation capacity of the cooling water pipe according to the heat dissipation capacity of the cooling water pipe;

and calculating the lower tower water temperature of the cooling tower according to the inlet water temperature, the dry-bulb temperature and the temperature difference.

In some embodiments, the heat dissipation of the cooling water pipe is calculated by the formula:

Q＝K×F×(T_atmosp-T_cwIn)；

wherein Q is the heat dissipation capacity of the cooling water pipe, K is the heat dissipation coefficient of the ambient atmosphere and the cooling water pipe, F is the heat dissipation area of the cooling water pipe, and T is_atmospIs the ambient atmospheric dry bulb temperature, T_cwInIs the inlet water temperature.

In some embodiments, the temperature difference Δ t is calculated by:

△t＝T_cwIn-T_tower＝Q/(Cp×M)，

then T_cwIn-T_tower＝K×F×(T_atmosp-T_cwIn)/(Cp×M)；

Wherein the content of the first and second substances,T_towerthe temperature of the lower tower water of the cooling tower is Cp, the constant pressure specific heat capacity of the water and the mass flow rate of the water.

In some embodiments, the lower column water temperature of the cooling tower is calculated by the formula:

T_tower＝T_cwIn-K×F×(T_atmosp-T_cwIn)/(Cp×M)。

in a second aspect of the embodiments of the present invention, there is provided a device for monitoring a wet bulb temperature approach degree of a cooling tower in real time, including:

the inlet water temperature acquisition module is used for acquiring the current inlet water temperature of the condenser of the refrigerator;

the environment temperature acquisition module is used for acquiring the current dry bulb temperature and the current wet bulb temperature of the atmospheric environment;

the lower tower water temperature calculating module is used for calculating the lower tower water temperature of the cooling tower based on the inlet water temperature and the dry bulb temperature;

the approximation degree calculating module is used for subtracting the wet bulb temperature from the lower tower water temperature to obtain a cooling tower wet bulb temperature approximation degree, and displaying the cooling tower wet bulb temperature approximation degree, wherein a calculation formula of the cooling tower wet bulb temperature approximation degree is as follows:

T＝T_atm-T_cwIn+k×(T_atmosp-T_cwIn)，

wherein T is the wet bulb temperature approach, T_cwInIs the inlet water temperature, T_atmospIs the dry bulb temperature, T_atmAnd k is the temperature coefficient of the lower tower.

In a third aspect of the embodiments of the present invention, there is provided a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method for monitoring the cooling tower wet-bulb temperature approximation in real time when executing the computer program.

In a fourth aspect of the embodiments of the present invention, a computer-readable storage medium is provided, which stores a computer program, and the computer program, when executed by a processor, implements the steps of the method for monitoring the cooling tower wet bulb temperature approximation in real time.

The method for monitoring the temperature approximation degree of the wet bulb of the cooling tower in real time provided by the embodiment of the invention has the beneficial effects that: the embodiment of the invention provides a method for monitoring the approximation degree of wet bulb temperature of a cooling tower in real time, which comprises the steps of obtaining the current inlet water temperature of a condenser of a refrigerating machine, the current dry bulb temperature and the current wet bulb temperature of the atmospheric environment; then calculating the lower tower water temperature of the cooling tower based on the inlet water temperature, the dry bulb temperature and a heat transfer formula; and finally, subtracting the wet bulb temperature from the lower tower water temperature to obtain a cooling tower wet bulb temperature approximation degree, and displaying the cooling tower wet bulb temperature approximation degree. According to the invention, the water temperature of the lower tower of the cooling tower is calculated by acquiring the water temperature of the inlet and the temperature of the dry bulb; the approximation degree of the wet bulb temperature of the cooling tower is calculated through the wet bulb temperature and the lower tower water temperature, so that the problem that the approximation degree of the wet bulb temperature of the cooling tower cannot be monitored in real time due to the fact that the lower tower temperature of the cooling tower is objectively difficult to acquire is solved. The proximity of the wet bulb temperature is a parameter for measuring the heat dissipation effect of the cooling tower, and the effect of monitoring the heat dissipation condition of the cooling tower on line in real time is achieved by monitoring the proximity of the wet bulb temperature of the cooling tower, so that users and supervision departments can know the operation condition of the cooling tower in time. The invention also sends out early warning information to prompt the user when the temperature approximation degree of the wet bulb of the cooling tower does not meet the preset condition.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a flow chart of a method for monitoring a wet bulb temperature approximation in real time for a cooling tower according to an embodiment of the present invention;

FIG. 2 is a flow chart for calculating a lower tower water temperature of the cooling tower based on the inlet water temperature, the dry bulb temperature and a heat transfer formula according to an embodiment of the present invention;

fig. 3 is a flowchart of a process of prompting the warning information according to the embodiment of the present invention;

FIG. 4 is a flow chart of a device for monitoring the temperature approach of a wet bulb of a cooling tower in real time according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a terminal device according to an embodiment of the present invention.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.

In order to explain the technical means of the present invention, the following description will be given by way of specific examples.

First embodiment

FIG. 1 is a flow chart of a method for real-time monitoring of a cooling tower wet bulb temperature approximation provided in an embodiment of the present invention.

As shown in FIG. 1, the method for monitoring the cooling tower wet bulb temperature approximation degree in real time comprises the following steps S110-S140:

s110, acquiring the current inlet water temperature of a condenser of the refrigerator;

s120, acquiring the current dry bulb temperature and the current wet bulb temperature of the atmospheric environment;

s130, calculating the lower tower water temperature of the cooling tower based on the inlet water temperature and the dry bulb temperature;

s140, subtracting the lower tower water temperature from the wet bulb temperature to obtain a cooling tower wet bulb temperature approximation degree, and displaying the cooling tower wet bulb temperature approximation degree.

The embodiment of the invention provides a method for monitoring the approximation degree of wet bulb temperature of a cooling tower in real time, which comprises the steps of obtaining the current inlet water temperature of a condenser of a refrigerating machine, the current dry bulb temperature and the current wet bulb temperature of the atmospheric environment; then calculating the lower tower water temperature of the cooling tower based on the inlet water temperature, the dry bulb temperature and a heat transfer formula; and finally, subtracting the wet bulb temperature from the lower tower water temperature to obtain a cooling tower wet bulb temperature approximation degree, and displaying the cooling tower wet bulb temperature approximation degree. According to the method, the water temperature of the lower tower of the cooling tower is calculated by acquiring the water temperature of the inlet and the temperature of the dry bulb; the approximation degree of the wet bulb temperature of the cooling tower is calculated through the wet bulb temperature and the lower tower water temperature, so that the problem that the approximation degree of the wet bulb temperature of the cooling tower cannot be monitored in real time due to the fact that the lower tower temperature of the cooling tower is objectively difficult to acquire is solved. The method achieves the effect of monitoring the heat dissipation condition of the cooling tower on line in real time by monitoring the approximation degree of the wet bulb temperature of the cooling tower, so that users and supervision departments can know the operation condition of the cooling tower in time.

Specifically, the water temperatures at the inlet and the outlet of the condenser of the refrigerator are always installed when the refrigerator leaves a factory, and the signals are input into the refrigerator PLC, so that the water temperature data in the refrigerator PLC can be read by the communication interface, and the current inlet water temperature of the cooling water can be obtained. The cooling tower is the supporting cooling tower of water-cooled electric refrigerator, and refrigerator condenser water inlet and cooling tower lower tower department lead to pipe connection, so import temperature and cooling tower lower tower temperature often have certain deviation, and the deviation is the temperature dissipation of cooling tower to this section condenser cooling water pipe of refrigerator. The greater the difference between the ambient temperature and the water temperature, the greater the dissipation. The current dry bulb temperature and the current wet bulb temperature of the atmospheric environment can be acquired through the temperature sensor.

Specifically, if the water temperature at the inlet and the outlet of the refrigerator is directly adopted to replace the water temperature of the lower tower of the cooling tower, certain errors are generated, and the errors are generated in the pipeline heat dissipation loss. The cooling water pipe from the cooling tower to the refrigerating machine is usually not insulated, the length of the cooling water pipe is usually dozens of meters to dozens of meters, at the moment, the heat transfer of the ambient temperature to the cooling water pipe usually brings the rising of the temperature of the cooling water, at the moment, the water temperature value of the inlet and the outlet of the refrigerating machine is higher than the water temperature of the lower tower of the cooling tower, and the obtained temperature value has certain error. Therefore, the method for calculating the tower water temperature under the cooling tower by combining the cooling water inlet water temperature with the correction of the ambient dry bulb temperature is proposed. The method adopts the inlet water temperature in the refrigerator PLC to calculate the temperature of the lower tower water of the cooling tower, and corrects the proper environmental temperature dissipation, and under the condition of no relevant internet of things point, the temperature of the lower tower water of the cooling tower which is as close to the actual value as possible is obtained.

Specifically, please refer to fig. 2 for a method for calculating a temperature of water in a lower tower of a cooling tower according to an inlet water temperature and a dry bulb temperature, fig. 2 is a flow chart for calculating the temperature of water in the lower tower of the cooling tower based on the inlet water temperature, the dry bulb temperature and a heat transfer formula according to an embodiment of the present invention.

As shown in fig. 2, calculating the lower tower water temperature of the cooling tower based on the inlet water temperature, the dry bulb temperature and the heat transfer formula may specifically include the following steps S210 to S230:

s210, calculating the heat dissipation capacity of the cooling water pipe based on a heat transfer formula;

s220, calculating the temperature difference delta t of the rising of the cooling water temperature corresponding to the heat dissipation capacity of the cooling water pipe according to the heat dissipation capacity of the cooling water pipe;

and S230, calculating the lower tower water temperature of the cooling tower according to the inlet water temperature, the dry-bulb temperature and the temperature difference.

Specifically, the calculation formula of the heat dissipation capacity of the cooling water pipe is as follows:

Q＝K×F×(T_atmosp-T_cwIn)；

wherein Q is the heat dissipation capacity of the cooling water pipe, K is the heat dissipation coefficient of the ambient atmosphere and the cooling water pipe, F is the heat dissipation area of the cooling water pipe, and T is_atmospIs the ambient atmospheric dry bulb temperature, T_cwInIs the inlet water temperature.

The calculation formula of the temperature difference delta t is as follows:

△t＝T_cwIn-T_tower＝Q/(Cp×M)，

then T_cwIn-T_tower＝K×F×(T_atmosp-T_cwIn)/(Cp×M)；

Wherein, T_towerThe temperature of the lower tower water of the cooling tower is Cp, the constant pressure specific heat capacity of the water and the mass flow rate of the water.

Therefore, the calculation formula of the lower tower water temperature of the cooling tower is as follows:

T_tower＝T_cwIn-K×F×(T_atmosp-T_cwIn)/(Cp×M)。

let K be K × F/(Cp × M),

T＝T_atm-T_tower，

then T is equal to T_atm-T_cwIn+k×(T_atmosp-T_cwIn)，

Wherein T is the wet bulb temperature approach, T_cwInIs the inlet water temperature, T_atmospIs the dry bulb temperature, T_atmAnd k is the temperature coefficient of the lower tower.

Specifically, the approach degree of the wet bulb temperature is a parameter for measuring the heat dissipation effect of the cooling tower. The cooling tower uses the air of the ambient atmosphere to carry out cooling treatment on cooling water, the cooling treatment mainly comprises evaporation and convection, and the evaporation effect accounts for the most part. The temperature of the cooling water after being cooled is determined by the wet bulb temperature of the atmospheric environment, so the difference between the wet bulb temperature of the atmospheric environment and the lower tower water temperature of the cooling tower is often adopted by industry to represent the cooling effect of the cooling tower. Often this value has a reasonable range, e.g., 2-4 deg.C, etc. The method calculates the approach degree of the wet bulb temperature of the cooling tower through the inlet water temperature of a refrigerant, the dry bulb temperature of the atmospheric environment and the wet bulb temperature, thereby realizing the monitoring of the approach degree of the wet bulb temperature of the cooling tower; and the user is reminded to deal with the abnormity through the temperature approaching degree of the wet bulb of the cooling tower.

Specifically, referring to fig. 3, a specific implementation method for reminding a user according to the approach of the wet bulb temperature of the cooling tower is shown, and fig. 3 is a flow implementation diagram of the warning information prompt provided in an embodiment of the present invention.

As shown in fig. 3, the warning information prompt may specifically include the following steps S310 to S320:

s310, judging whether the approximation degree of the wet bulb temperature of the cooling tower meets a preset condition;

and S320, if not, sending out early warning information to prompt the user.

Specifically, before determining whether the cooling tower wet bulb temperature approach degree meets the preset condition in step S310, the method further includes: setting a preset condition.

Specifically, the preset condition is that the cooling tower wet bulb temperature approach degree has a reasonable range, and the reasonable range can be set according to experience, such as 2-4 ℃. When the temperature approach degree of the wet bulb of the cooling tower is higher than a reasonable range, the cooling effect of the cooling tower is poor, so that the temperature of the cooling water of the refrigerating machine is higher, the high pressure of the refrigerating machine is higher, and finally, the energy consumption of the refrigerating machine is overlarge and even potential safety hazards are generated. The reason for the phenomenon of overlarge wet bulb temperature approximation degree is that the inside of a cooling tower is blocked, organic matters are bred to seriously affect heat dissipation, or the cooling tower is poor in cooling effect due to the conditions of ageing of fillers and the like. At this point, the cooling tower needs to be cleaned to recover its heat dissipation capability.

In this embodiment, whether the cooling tower wet bulb temperature approach degree is abnormal is determined according to the situation of the cooling tower wet bulb temperature approach degree, and a user is reminded to handle the abnormality. The abnormity is processed by a user, so that the purposes of improving the operation safety of the cooling tower and improving the heat dissipation effect of the cooling tower are achieved.

Second embodiment

Based on the same inventive concept as the method in the first embodiment, correspondingly, the embodiment also provides a device for monitoring the approximation degree of the wet bulb temperature of the cooling tower in real time.

FIG. 4 is a flow chart of a device for monitoring the temperature approach of the wet bulb of the cooling tower in real time, which is provided by the invention.

As shown in fig. 4, the illustrated apparatus 4 includes: 41 inlet water temperature acquisition module, 42 environment temperature acquisition module, 43 lower tower water temperature calculation module and 44 approximation degree calculation module.

The inlet water temperature obtaining module is used for obtaining the current inlet water temperature of the condenser of the refrigerator.

And the environment temperature acquisition module is used for acquiring the current dry bulb temperature and the current wet bulb temperature of the atmospheric environment.

And the lower tower water temperature calculating module is used for calculating the lower tower water temperature of the cooling tower based on the inlet water temperature and the dry bulb temperature.

The approximation degree calculating module is used for subtracting the lower tower water temperature from the wet bulb temperature to obtain a cooling tower wet bulb temperature approximation degree, and displaying the cooling tower wet bulb temperature approximation degree, wherein a calculation formula of the cooling tower wet bulb temperature approximation degree is as follows:

T＝T_atm-T_cwIn+k×(T_atmosp-T_cwIn)，

wherein T is the wet bulb temperature approach, T_cwInIs the inlet water temperature, T_atmospIs the dry bulb temperature, T_atmAnd k is the temperature coefficient of the lower tower.

In some exemplary embodiments, the lower tower water temperature calculating module specifically includes:

the cooling water pipe heat dissipation amount calculation unit is used for calculating the heat dissipation amount of the cooling water pipe based on a heat transfer formula;

the calculation formula of the heat dissipation capacity of the cooling water pipe is as follows:

Q＝K×F×(T_atmosp-T_cwIn)；

wherein Q is the heat dissipation capacity of the cooling water pipe, K is the heat dissipation coefficient of the ambient atmosphere and the cooling water pipe, F is the heat dissipation area of the cooling water pipe, and T is_atmospIs the ambient atmospheric dry bulb temperature, T_cwInIs the inlet water temperature.

The temperature difference calculation unit is used for calculating the temperature difference delta t of the rising of the cooling water temperature corresponding to the heat dissipation capacity of the cooling water pipe according to the heat dissipation capacity of the cooling water pipe;

the calculation formula of the temperature difference delta t is as follows:

△t＝T_cwIn-T_tower＝Q/(Cp×M)，

then T_cwIn-T_tower＝K×F×(T_atmosp-T_cwIn)/(Cp×M)；

Wherein, T_towerThe temperature of the lower tower water of the cooling tower is Cp, the constant pressure specific heat capacity of the water and the mass flow rate of the water.

The lower tower water temperature calculating unit is used for calculating the lower tower water temperature of the cooling tower according to the inlet water temperature, the dry-bulb temperature and the temperature difference;

the calculation formula of the lower tower water temperature of the cooling tower is as follows:

T_tower＝T_cwIn-K×F×(T_atmosp-T_cwIn)/(Cp×M)。

in some exemplary embodiments, the apparatus further comprises:

the judging module is used for judging whether the cooling tower wet bulb temperature approximation degree meets a preset condition or not;

and the early warning prompting module is used for sending out early warning information to prompt the user if the user does not answer the prompt request.

Third embodiment

The method and the device can be applied to terminal equipment such as desktop computers, notebooks, palm computers and cloud servers.

Fig. 5 is a schematic diagram of a terminal device to which the above method and apparatus may be applied according to an embodiment of the present invention, and as shown in the drawing, the device 5 includes a memory 51, a processor 50, and a computer program 52 stored in the memory 51 and executable on the processor 50, and when the processor 50 executes the computer program 52, the steps of the method for monitoring the cooling tower wet bulb temperature approximation in real time are implemented. Such as the functions of the modules 41 to 44 shown in fig. 4.

The device 5 may be a computing device such as a cloud server. The terminal device may include, but is not limited to, the processor 50 and the memory 51. Those skilled in the art will appreciate that fig. 5 is merely an example of a device 5 and does not constitute a limitation of the terminal device 5 and may include more or fewer components than shown, or some components in combination, or different components, for example the terminal device may also include input output devices, network access devices, buses, etc.

The Processor 50 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 51 may be an internal storage unit of the device 5, such as a hard disk or a memory of the device 5. The memory 51 may also be an external storage device of the device 5, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. provided on the device 5. Further, the memory 51 may also include both an internal storage unit and an external storage device of the device 5. The memory 51 is used for storing the computer program and other programs and data required by the terminal device. The memory 51 may also be used to temporarily store data that has been output or is to be output.

The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.

Specifically, the present application further provides a computer-readable storage medium, which may be a computer-readable storage medium contained in the memory in the foregoing embodiments; or it may be a separate computer-readable storage medium not incorporated into the terminal device. The computer readable storage medium stores one or more computer programs:

a computer readable storage medium comprising a computer program stored thereon which, when executed by a processor, performs the steps of the method for real-time monitoring of a cooling tower wet bulb temperature approximation.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.