阅读说明：本技术 依靠太阳能和相变取热的太阳能-水源热泵供暖系统 (Solar energy-water source heat pump heating system for obtaining heat by means of solar energy and phase change ) 是由 张昌建 刘小溪 罗景辉 王景刚 鲍玲玲 刘欢 胡文全 刘晓峰 于 2021-09-30 设计创作，主要内容包括：本发明公开了依靠太阳能和相变取热的太阳能-水源热泵供暖系统,应用于供暖领域,其包括设置在水池内的第一盘管和第二盘管,所述第一盘管的出水口通过第五管道与水源热泵的进水口连接,所述水源热泵的出水口通过第六管道与第一盘管的进水口连接,所述水源热泵与热用户连接,设置在第一盘管下方的第二盘管的进水口通过第一管道与太阳能集热板的出水口连接,所述太阳能集热板的进水口通过第二管道与第二盘管的出水口连接；本发明首次将太阳能与水相变释放的热量进行完美的结合,实现了白天和夜间的稳定供暖,其节能环保、能源利用率高、运行性能好、维护成本低、污染物零排放,具有全新的设计理念,为能源的开发利用开辟了新思路,有必要推广。(The invention discloses a solar energy-water source heat pump heating system for obtaining heat by means of solar energy and phase change, which is applied to the heating field and comprises a first coil pipe and a second coil pipe which are arranged in a water pool, wherein the water outlet of the first coil pipe is connected with the water inlet of a water source heat pump through a fifth pipeline, the water outlet of the water source heat pump is connected with the water inlet of the first coil pipe through a sixth pipeline, the water source heat pump is connected with a heat user, the water inlet of the second coil pipe arranged below the first coil pipe is connected with the water outlet of a solar energy heat collecting plate through the first pipeline, and the water inlet of the solar energy heat collecting plate is connected with the water outlet of the second coil pipe through the second pipeline; the solar water heater perfectly combines the heat released by the solar energy and the water phase change for the first time, realizes stable heating in the daytime and at night, has the advantages of energy conservation, environmental protection, high energy utilization rate, good operation performance, low maintenance cost, zero emission of pollutants, brand new design concept, new idea for development and utilization of energy and necessary popularization.)

1. The solar energy-water source heat pump heating system which depends on solar energy and phase change to obtain heat is characterized in that: including setting up first coil pipe (7) and second coil pipe (8) in pond (6), the delivery port of first coil pipe (7) passes through fifth pipeline (5-5) and is connected with the water inlet of water source heat pump (20), the delivery port of water source heat pump (20) passes through sixth pipeline (5-6) and is connected with the water inlet of first coil pipe (7), water source heat pump (20) are connected with heat consumer (11), and the water inlet of second coil pipe (8) of setting in first coil pipe (7) below is connected with the delivery port of solar panel (1) through first pipeline (5-1), the water inlet of solar panel (1) passes through the delivery port of second pipeline (5-2) and second coil pipe (8) and is connected.

2. The solar-water source heat pump heating system for extracting heat by means of solar energy and phase change according to claim 1, wherein: the solar water heater is characterized in that a first electric control valve (3) is arranged on the first pipeline (5-1), a second electric control valve (12) is arranged on the second pipeline (5-2), a third electric control valve (17) is arranged on the fifth pipeline (5-5), a fourth electric control valve (18) is arranged on the sixth pipeline (5-6), the first electric control valve (3), the second electric control valve (12), the third electric control valve (17) and the fourth electric control valve (18) are all electrically connected with the output end of a controller (21), and the input end of the controller (21) is electrically connected with a first temperature sensor (2) arranged at the water outlet of the solar heat collecting plate (1).

3. The solar-water source heat pump heating system for extracting heat by means of solar energy and phase change according to claim 2, wherein: and a circulating pump (13) is arranged on the second pipeline (5-2), and the circulating pump (13) is electrically connected with the output end of the controller (21).

4. The solar-water source heat pump heating system for extracting heat by means of solar energy and phase change according to claim 2, wherein: the pipeline control device is characterized in that a check valve (19) is arranged on each of the fifth pipeline (5-5) and the sixth pipeline (5-6), the sixth pipeline (5-6) between the check valve (19) and the fourth electric control valve (18) is connected with one end of the third pipeline (5-3), the other end of the third pipeline (5-3) is connected with the first pipeline (5-1), a fifth electric control valve (10) is arranged on the third pipeline (5-3), and the fifth electric control valve (10) is electrically connected with the output end of the controller (21).

5. The solar-water source heat pump heating system for obtaining heat by means of solar energy and phase change according to claim 4, wherein: fifth pipeline (5-5) between check valve (19) and third electric control valve (17) is connected with the one end of fourth pipeline (5-4), the other end and the second pipeline (5-2) of fourth pipeline (5-4) are connected, be equipped with sixth electric control valve (14) on fourth pipeline (5-4), sixth electric control valve (14) are connected with the output electricity of controller (21).

6. The solar-water source heat pump heating system for extracting heat by means of solar energy and phase change according to claim 2, wherein: the solar heat collecting plate is characterized in that a photoelectric sensor (4) is arranged on the solar heat collecting plate (1), the photoelectric sensor (4) is electrically connected with the input end of a controller (21), the output end of the controller (21) is electrically connected with a rotating motor (15), and the rotating motor (15) is connected with the solar heat collecting plate (1).

7. The solar-water source heat pump heating system for obtaining heat by means of solar energy and phase change according to claim 6, wherein: and the circulating medium between the solar heat collecting plate (1) and the second coil (8) and the circulating medium between the water source heat pump (20) and the first coil (7) are ethylene glycol aqueous solutions.

8. The solar-water source heat pump heating system for obtaining heat by means of solar energy and phase change according to claim 7, wherein: the concentration of the ethylene glycol aqueous solution is 20-60%.

9. The solar-water source heat pump heating system for obtaining heat by means of solar energy and phase change according to claim 7, wherein: and a second temperature sensor (16) is arranged at the water outlet of the water source heat pump (20), and the second temperature sensor (16) is electrically connected with the input end of the controller (21).

10. The solar-water source heat pump heating system for extracting heat by means of solar energy and phase change according to any one of claims 1 to 9, wherein: the water pool (6) is connected with a water mixing device (9).

Technical Field

The invention relates to the field of solar heating, in particular to a solar-water source heat pump heating system which can obtain heat by means of solar energy and phase change.

Background

In recent years, with the continuous development and use of non-renewable resources worldwide, the trend of energy shortage is inevitable, the problem of non-renewable energy consumption is increasingly severe, and various countries seek the development and utilization of renewable energy and effectively available sustainable energy such as solar energy, wind energy and the like.

The solar energy is clean and environment-friendly, has no pollution and high utilization value, and the water source heat pump can convert low-level heat energy in water into high-level heat energy. Both of which are already the best choices for user heating. However, the radiation of the sun is limited by natural conditions such as day and night, season, weather and the like, so that the heating device has intermittency and instability and cannot meet the heating requirement of a user.

At present, a vacuum tube solar heat collector is mostly adopted, the initial installation cost is high, a water return pipe is easy to freeze and damage in cold winter, the normal use of equipment is influenced, and the solar heating cannot be popularized and applied due to the existence of a plurality of problems.

Disclosure of Invention

The invention aims to solve the technical problem of providing a solar energy-water source heat pump heating system which can obtain heat by means of solar energy and phase change, can utilize heat released by phase change of water to supply heat for a heat user under the condition of insufficient sunlight, and effectively prevents the occurrence of icing damage by arranging a circulating medium of a glycol aqueous solution in a solar heat collecting plate.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the solar water source heat pump system comprises a first coil pipe and a second coil pipe which are arranged in a water pool, wherein a water outlet of the first coil pipe is connected with a water inlet of a water source heat pump through a fifth pipeline, a water outlet of the water source heat pump is connected with a water inlet of the first coil pipe through a sixth pipeline, the water source heat pump is connected with a heat user, a water inlet of the second coil pipe which is arranged below the first coil pipe is connected with a water outlet of a solar heat collecting plate through the first pipeline, and a water inlet of the solar heat collecting plate is connected with a water outlet of the second coil pipe through the second pipeline.

Furthermore, be equipped with first automatically controlled valve on the first pipeline, be equipped with the second automatically controlled valve on the second pipeline, be equipped with the third automatically controlled valve on the fifth pipeline, be equipped with the fourth automatically controlled valve on the sixth pipeline, first automatically controlled valve, second automatically controlled valve, third automatically controlled valve, fourth automatically controlled valve all are connected with the output of controller electricity, the input and the first temperature sensor electricity that sets up in solar panel water outlet department of controller are connected.

Furthermore, a circulating pump is arranged on the second pipeline and electrically connected with the output end of the controller.

Further, all be equipped with the check valve on fifth pipeline and the sixth pipeline, the sixth pipeline between check valve and the fourth electric control valve is connected with the one end of third pipeline, the other end and the first pipe connection of third pipeline, be equipped with fifth electric control valve on the third pipeline, fifth electric control valve is connected with the output electricity of controller.

Furthermore, a fifth pipeline between the check valve and the third electric control valve is connected with one end of a fourth pipeline, the other end of the fourth pipeline is connected with the second pipeline, a sixth electric control valve is arranged on the fourth pipeline, and the sixth electric control valve is electrically connected with the output end of the controller.

Furthermore, a photoelectric sensor is arranged on the solar heat collecting plate and electrically connected with the input end of the controller, the output end of the controller is electrically connected with a rotating motor, and the rotating motor is connected with the solar heat collecting plate.

Furthermore, the circulating medium between the solar heat collecting plate and the second coil pipe and the circulating medium between the water source heat pump and the first coil pipe are ethylene glycol aqueous solutions.

Further, the concentration of the ethylene glycol aqueous solution is 20% -60%.

Furthermore, a second temperature sensor is arranged at the water outlet of the water source heat pump and electrically connected with the input end of the controller.

Furthermore, the water pool is connected with a water mixing device.

Due to the adoption of the technical scheme, the invention has the beneficial effects that:

the solar water heater has the advantages of reasonable structure, novel design, good originality and high use value, perfectly combines the heat released by the change of the solar energy and the water phase for the first time, realizes stable heating in the daytime and at night, and meets the heating requirement of a heat user in winter. The system is energy-saving and environment-friendly, high in energy utilization rate, good in operation performance, low in maintenance cost and zero in pollutant emission. Has a brand new design concept, opens up a new idea for energy utilization, and points out a direction for the healthy development of the industry.

The ethylene glycol aqueous solution is used as a circulating medium, so that the freezing damage of the solar heat collecting plate is avoided, the heat efficiency in the circulating process is high, and the method has the need of vigorous popularization.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the operating principle of the controller of the present invention.

Wherein, 1, solar energy heat collecting plate; 2. a first temperature sensor; 3. a first electrically controlled valve; 4. a photosensor; 5-1 a first conduit; 5-2, a second pipeline; 5-3, a third pipeline; 5-4, a fourth pipeline; 5-5, a fifth pipeline; 5-6, a sixth pipeline; 6. a pool; 7. a first coil pipe; 8. a second coiled tube; 9. a water mixing device; 10. a fifth electrically controlled valve; 11. a hot user; 12. a second electrically controlled valve; 13. a circulation pump; 14. a sixth electrically controlled valve; 15. rotating the motor; 16. a second temperature sensor; 17. a third electrically controlled valve; 18. a fourth electrically controlled valve; 19. a check valve; 20. a water source heat pump; 21. and a controller.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

the solar energy-water source heat pump heating system which can obtain heat by means of solar energy and phase change is shown in fig. 1 and fig. 2 and comprises a first coil pipe 7 and a second coil pipe 8 which are arranged in a water pool 6, wherein a circulating medium ethylene glycol aqueous solution is arranged in the first coil pipe 7 and the second coil pipe, the first coil pipe 7 is connected with a water source heat pump 20, and the second coil pipe is connected with a solar heat collecting plate 1. When sunlight is sufficient, the temperature of the circulating medium in the solar heat collecting plate 1 absorbs the heat of the sun to rise, the circulating medium with the increased temperature releases the heat in the second coil 8, the water temperature near the second coil 8 in the water pool 6 rises, the density of the water decreases and the water flows upwards to the vicinity of the first coil 7, and the circulating medium in the first coil 7 absorbs the heat and the temperature rises to provide the heat source heat supply user 11 for heating for the water source heat pump 20.

The circulating medium between the solar heat collecting plate 1 and the second coil 8 and the circulating medium between the water source heat pump 20 and the first coil 7 are ethylene glycol aqueous solutions, and the concentration of the ethylene glycol aqueous solutions is 20-60%. The temperature of the glycol aqueous solution is increased by absorbing heat, and the glycol aqueous solution is more beneficial to the operation of equipment and has better heat exchange efficiency compared with the condition that water is used as a circulating medium.

As shown in fig. 1, a water outlet of the first coil 7 is connected to a water inlet of a water source heat pump 20 through a fifth pipeline 5-5, a water outlet of the water source heat pump 20 is connected to a water inlet of the first coil 7 through a sixth pipeline 5-6, the water source heat pump 20 is connected to a heat consumer 11, a water inlet of a second coil 8 disposed below the first coil 7 is connected to a water outlet of a solar heat collecting plate 1 through a first pipeline 5-1, and a water inlet of the solar heat collecting plate 1 is connected to a water outlet of the second coil 8 through a second pipeline 5-2. Therefore, under the condition of sufficient sunlight in the daytime, the solar heat collecting plate 1 absorbs heat and releases heat through the first pipeline 5-1 and the second coil 8 to increase the temperature of water in the pool, and the temperature of the circulating medium after heat release is reduced and flows back to the solar heat collecting plate 1 through the second pipeline 5-2 to continuously absorb heat; the ice near the heat release of the second coil 8 slowly melts and the water temperature rises and floats upwards to the vicinity of the first coil 7, the heat absorption temperature of the circulating medium in the first coil 7 rises, the circulating medium flows back to the water source heat pump 20 through the fifth pipeline 5-5 to release heat for heating a heat user 11, and the temperature of the circulating medium after heat release decreases and flows back to the first coil 7 through the sixth pipeline 5-6 to continuously absorb heat. The whole heating process is clean and environment-friendly, no pollutant is discharged, and the ethylene glycol circulating medium is arranged in the solar heat collecting plate 1, so that the damage caused by the icing of the solar heat collecting plate 1 can be effectively prevented.

Solar energy is greatly influenced by day and night, if the system normally heats under the condition that solar energy exists in the day, heat released by water in the water pool 6 becoming ice supplies heat for users at night, and the requirement of a heat user 11 is met. In order to ensure the normal operation of the system, a third pipeline 5-3, a fourth pipeline 5-4 and an intelligent control unit are additionally arranged. The operation thereof will be described in detail below.

As shown in fig. 1, a first electric control valve 3 is arranged on the first pipeline 5-1, a circulating pump 13 and a second electric control valve 12 are arranged on the second pipeline 5-2, a third electric control valve 17 is arranged on the fifth pipeline 5-5, and a fourth electric control valve 18 is arranged on the sixth pipeline 5-6, as shown in fig. 2, the first electric control valve 3, the second electric control valve 12, the third electric control valve 17, the fourth electric control valve 18 and the circulating pump 13 are all electrically connected with an output end of a controller 21, and an input end of the controller 21 is electrically connected with a first temperature sensor 2 arranged at a water outlet of the solar heat collecting panel 1. The controller 21 is a PLC control unit, a single chip microcomputer or other products with intelligent control function.

When the temperature of the heat absorbed by the solar heat collecting plate 1 is increased, the first temperature sensor 2 transmits the measured temperature information to the input end of the controller 21 in real time, after the controller 21 analyzes, compares and judges, when the temperature of the first temperature sensor 2 reaches a set value, the controller 21 sends an opening command to the first electric control valve 3, the second electric control valve 12, the third electric control valve 17, the fourth electric control valve 18 and the circulating pump 13 which are connected with the output end, and the daytime heating mode is opened. The circulating pump 13 can timely convey the circulating medium which is subjected to heat release in the second coil 8 into the solar heat collecting plate 1.

As shown in fig. 1, check valves 19 are disposed on the fifth pipeline 5-5 and the sixth pipeline 5-6, and the check valves 19 can effectively prevent water from flowing backwards. The sixth pipeline 5-6 between the check valve 19 and the fourth electric control valve 18 is connected with one end of the third pipeline 5-3, the other end of the third pipeline 5-3 is connected with the first pipeline 5-1, the fifth pipeline 5-5 between the check valve 19 and the third electric control valve 17 is connected with one end of the fourth pipeline 5-4, and the other end of the fourth pipeline 5-4 is connected with the second pipeline 5-2.

The third pipeline 5-3 and the fourth pipeline 5-4 are additionally provided for providing possibility for a night heating mode, a fifth electric control valve 10 is arranged on the third pipeline 5, a sixth electric control valve 14 is arranged on the fourth pipeline 5-4, and the fifth electric control valve 10 and the sixth electric control valve 14 are both electrically connected with the output end of the controller 21. When the temperature value measured by the first temperature sensor 2 is lower than the set value, the output end of the controller 21 sends out a command: and closing the first electric control valve 3, the second electric control valve 12, the third electric control valve 17, the fourth electric control valve 18 and the circulating pump 13, and simultaneously opening the fifth electric control valve 10 and the sixth electric control valve 14, wherein at the moment, the second coil 8 absorbs heat of water in the water tank 6 through the additionally arranged third pipeline 5-3 and fourth pipeline 5-4 to supply heat to the heat source heat pump 20 for the heat user 11.

As shown in fig. 1 and fig. 2, a second temperature sensor 16 is disposed at the water outlet of the water source heat pump 20, and the second temperature sensor 16 is electrically connected to an input end of a controller 21. At night, after the second coil pipe 8 absorbs the waste heat of the water in the water tank 6 to heat the user 11 for a period of time, when the temperature value measured by the second temperature sensor 16 is lower than the set value, the controller 21 sends a command to the output end to open the third electric control valve 17 and the fourth electric control valve 18, and at this moment, the first coil pipe 7 and the second coil pipe 8 absorb the heat released by the water in the water tank together to heat the user 11. When the heat released by the liquid water is changed into the liquid water at 0 ℃, part of the heat released by the liquid water is continuously condensed into the solid ice to form an ice-water mixture at 0 ℃, the water is changed from the liquid state into the solid state to release the heat, the heat is supplied to the hot users 11 by the water supply source heat pump 20, the temperature of the glycol water solution is increased when the concentration of the glycol water solution is 20-60%, and the temperature of the heat released by the condensation of the water into the ice is increased by the glycol water solution in the first coil 7 and the second coil 8, so that the hot users 11 can be heated at night.

Through experiment, the sun is sufficient daytime, freezes less in the pond 6 night, and when the sunlight was insufficient daytime, it can be more to freeze night, but 90% water freezes the heat of releasing in the at utmost pond 6 can satisfy the hot user 11 heating needs at night, and the water of the same volume becomes the water that ice releases and becomes the heat that 0 degree released equivalent to 80 degrees, proves through the experiment: the heat released by the freezing of water in the pool 6 is sufficient for the heating needs of the hot user 11 at night. In cold winter, the pool 6 is preferably arranged indoors due to large temperature difference between the indoor and the outdoor, which is more beneficial to heat exchange.

To sum up, the system utilizes solar energy to heat at daytime and utilizes heat released by water phase change at night to heat, so that the requirement of a heat user 11 on continuous heating day and night is met, the intermittent and unstable conditions of heating by solar energy alone are avoided, and the system is energy-saving, environment-friendly, low in operation and maintenance cost, compact in structure, high in energy utilization rate and necessary for popularization.

In order to enable the solar heat collecting plate 1 to have a high heat collecting effect, the solar heat collecting plate 1 needs to rotate along with the operation of the sun, a photoelectric sensor 4 is arranged on the solar heat collecting plate 1, the photoelectric sensor 4 transmits collected optical signals to an input end of a controller 21, an output end of the controller 21 is electrically connected with a rotating motor 15, the controller 21 controls the rotating motor 15 to rotate in real time according to the optical signals collected by the photoelectric sensor 4, and the rotating motor 15 is connected with the solar heat collecting plate 1. The rotating motor 15 rotates to drive the solar heat collecting plate 1 to rotate, so that the solar heat collecting plate 1 is ensured to be always opposite to the sun, and the heat collecting efficiency is ensured.

As shown in fig. 1, the water tank 6 is connected with a water mixing device 9, and the arrangement of the water mixing device 9 increases the flow of water, so that the water temperature in the water tank 6 is uniformly distributed, and the phenomenon of water temperature stratification in the water tank 6 is avoided; the heat exchange coefficient between the water in the water tank 6 and the coil pipe is increased, and the heat exchange effect is greatly improved.

Finally, it should be noted that: the above examples are merely illustrative for clearly illustrating the present invention and are in no way to be construed as limiting the embodiments. It will be apparent to those skilled in the art that many more modifications and variations than mentioned above are possible in light of the above teaching, and it is not intended to be exhaustive or to limit all embodiments to the precise form disclosed, and all changes and modifications that are obvious are intended to fall within the scope of the invention.