阅读说明：本技术 一种太阳能热水器效能的测试装置及方法 (Device and method for testing efficiency of solar water heater ) 是由 殷健 曹梦洁 李骏龙 俞慧杰 徐雁冰 于 2020-06-11 设计创作，主要内容包括：本发明提供的一种太阳能热水器效能的测试装置,包括热水器水箱,及与其相连接的循环装置,所述循环装置包括,连接于所述热水器水箱出水口的循环泵,与所述循环泵相连接的贮水箱,以及连接于所述贮水箱的数据采集装置,可以满足多个温度测试仪共同测试,减少误差。运用循环泵将箱内热水导出测量便于箱内温度一致性,提高温度的准确度,避免箱内水温分层,防止热水仅处于箱顶以及与换热器交接处,且有助于平衡水温。采集数据用设备便于放置,可以改变接管长度改变采集装置的位置。温度计的导线长度可以很短,减少电子信息传播产生的误差。(The invention provides a device for testing the efficiency of a solar water heater, which comprises a water tank of the water heater and a circulating device connected with the water tank of the water heater, wherein the circulating device comprises a circulating pump connected with the water outlet of the water tank of the water heater, a water storage tank connected with the circulating pump and a data acquisition device connected with the water storage tank, so that the requirement of the joint test of a plurality of temperature testers can be met, and the error is reduced. The circulating pump is used for guiding out the indoor hot water to measure the temperature consistency in the box, the temperature accuracy is improved, the water temperature stratification in the box is avoided, the hot water is prevented from being only positioned at the box top and at the joint of the box top and the heat exchanger, and the water temperature balancing is facilitated. The device for collecting data is convenient to place, and the length of the connecting pipe can be changed to change the position of the collecting device. The length of the thermometer wires can be very short, reducing errors in the propagation of electronic information.)

1. The utility model provides a testing arrangement of solar water heater efficiency, includes water heater water tank, and the circulating device who is connected with it which characterized in that: the circulating device comprises a circulating pump connected to the water outlet of the water tank of the water heater, a water storage tank connected with the circulating pump, and a data acquisition device connected to the water storage tank;

the water outlet end of the water storage tank is connected with the water inlet of the water tank of the water heater.

2. The solar water heater efficiency testing device according to claim 1, characterized in that: and a cold water inlet is arranged between the water storage tank and the water inlet of the water heater tank.

3. The solar water heater efficiency testing device according to claim 1, characterized in that: the data acquisition device comprises a plurality of temperature testers.

4. The solar water heater efficiency testing device according to claim 1, characterized in that: the circulating pump is provided with an electronic valve.

5. The solar water heater efficiency testing device according to claim 1, characterized in that: the water tank of the water heater, the circulating pump and the water storage tank are connected through detachable heat preservation pipelines.

6. A method of using the solar water heater performance testing apparatus of any of claims 1-5, wherein: the method comprises the following steps: injecting water into a water tank of the water heater and heating by internal circulation of a heat exchange pump in the water heater;

pumping hot water into the water storage tank;

the data acquisition device carries out multiple temperature measurements;

the hot water in the water storage tank is recycled back to the water tank of the water heater.

7. The device and the method for testing the efficiency of the solar water heater according to claim 6 are characterized in that: the starting frequency of the circulating pump is the same as that of the heat exchange pump.

Technical Field

The invention relates to the technical field of heat treatment, in particular to a device and a method for testing the efficiency of a solar water heater.

Background

A balcony wall-mounted indirect solar device is mainly constructed with a photovoltaic heat collecting plate (evacuated collector tube) heat collecting device, a water storage tank, a heat energy conversion device, a heat transfer medium and the like, the solar device is the most common household type, the operation principle of the balcony wall-mounted indirect solar device is that a heat collector collects solar energy and converts the solar energy into heat energy of the heat transfer medium, one part of the heat transfer medium is arranged in the heat collector, the other part of the heat transfer medium is arranged in the heat conversion device in the water storage tank, energy transfer is carried out through energy potential of a circulating pump or the cold and hot medium, and finally the heat energy of the heat transfer medium is transferred into water.

When the heat gain quantity (heat collection effect) and the heat preservation performance of the heat storage water tank of the solar equipment are detected, the following formula is adopted:

ρ_wdensity of water

C_pwSpecific heat capacity of water

V_s-the amount of hot water in the hot water storage tank

t_e、t_bTemperature A at the beginning and end of the hot water detection in the hot water storage tank, respectively, heat collection area of the heat collector

H- -daily solar dose

Therefore, the solar energy test mainly tests the water temperature at the beginning and the end, but for balcony wall-mounted indirect solar energy equipment, a water storage tank has pressure, a channel which is in contact with the outside is not provided for the equipment for testing the temperature to enter, and the water temperature stratification phenomenon exists in the water storage tank.

Disclosure of Invention

The invention provides a device and a method for testing the efficiency of a solar water heater, which have small error and are convenient to place and can measure the water temperature for multiple times.

In order to solve the technical problems, the invention adopts the technical scheme that: a testing device for the efficiency of a solar water heater comprises a water heater water tank and a circulating device connected with the water heater water tank, wherein the circulating device comprises a circulating pump connected to the water outlet of the water heater water tank, a water storage tank connected with the circulating pump and a data acquisition device connected to the water storage tank;

the water outlet end of the water storage tank is connected with the water inlet of the water tank of the water heater.

Furthermore, a cold water inlet is arranged between the water storage tank and the water inlet of the water tank of the water heater.

Further, the data acquisition device comprises a plurality of temperature testers.

Further, the circulating pump is provided with an electronic valve.

Furthermore, the water tank of the water heater, the circulating pump and the water storage tank are connected through detachable heat preservation pipelines.

The method for using the testing device for the efficiency of the solar water heater comprises the following steps: injecting water into a water tank of the water heater and heating by internal circulation of a heat exchange pump in the water heater; the inside of the water heater is heated in an inner circulation mode through a heat exchange pump, and the water temperature in the water heater is balanced to a certain degree;

pumping hot water into the water storage tank;

the data acquisition device carries out multiple temperature measurements;

the hot water in the water storage tank is recycled back to the water tank of the water heater.

Furthermore, the starting frequency of the circulating pump is the same as that of the heat exchange pump.

Compared with the prior art, the invention has the advantages and positive effects that:

1. the device and the method for testing the efficiency of the solar water heater can meet the requirement of common test of a plurality of temperature testers and reduce errors.

2. According to the device and the method for testing the efficiency of the solar water heater, provided by the invention, hot water in the tank is led out by the circulating pump to be measured, so that the temperature consistency in the tank is facilitated, the temperature accuracy is improved, the temperature stratification in the tank is avoided, the hot water is prevented from being only positioned at the top of the tank and at the joint of the hot water and the heat exchanger, and the water temperature is favorably balanced.

3. According to the device and the method for testing the efficiency of the solar water heater, the device for collecting data is convenient to place, and the length of the connecting pipe can be changed to change the position of the collecting device.

4. According to the device and the method for testing the efficiency of the solar water heater, the length of the lead of the thermometer can be very short, and errors generated by electronic information propagation are reduced.

Drawings

FIG. 1 is a connection diagram of the present invention.

Detailed Description

For a better understanding of the present invention, reference is made to the following detailed description of the invention, which is to be read in connection with the accompanying drawings.

As shown in fig. 1:

a testing device for the efficiency of a solar water heater comprises a water tank of the water heater and a circulating device connected with the water tank, wherein the circulating device comprises a circulating pump connected to the water outlet of the water tank of the water heater, a water storage tank connected with the circulating pump and a data acquisition device connected with the water storage tank;

the water outlet end of the water storage tank is connected with the water inlet of the water tank of the water heater.

A cold water inlet is arranged between the water storage tank and the water inlet of the water tank of the water heater.

The data acquisition device comprises a plurality of temperature testers.

The circulating pump is provided with an electronic valve.

The water tank of the water heater, the circulating pump and the water storage tank are connected through detachable heat preservation pipelines.

And a control device is arranged in the workshop, is electrically connected with the circulating pump and is in signal connection with the data acquisition device.