CN113048664A - Solar water heater efficiency test system and method - Google Patents
Solar water heater efficiency test system and method Download PDFInfo
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- CN113048664A CN113048664A CN202110308448.XA CN202110308448A CN113048664A CN 113048664 A CN113048664 A CN 113048664A CN 202110308448 A CN202110308448 A CN 202110308448A CN 113048664 A CN113048664 A CN 113048664A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/90—Arrangements for testing solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention relates to a solar water heater efficiency test system and method, and belongs to the technical field of solar water heater efficiency tests. The invention comprises the following steps: a water supply system, the water supply system comprising: the system comprises a constant-temperature water tank, a water collector, a backwater water tank, a first electromagnetic valve, a water inlet pump, a water outlet pump, a heating device and a refrigerating device; a test piping system, the test piping system including a plurality of test stations, each test station including: the system comprises a heat exchanger, a first circulating pump, three temperature sensors, a flowmeter, a three-way valve, a second electromagnetic valve, a solar heat collector and a heat storage water tank; a control system, the control system comprising: the system comprises an upper computer and a lower computer, wherein the upper computer is used for selecting a test station to be carried out, and parameters of the solar water heater are transmitted to the lower computer of the solar water heater test system through a TCP/IP protocol. The invention can simultaneously detect the efficiency of a plurality of household solar water heaters by realizing the TCP/IP network communication between the upper computer and the lower computer, and has high automation level.
Description
Technical Field
The invention relates to the technical field of solar water heater efficiency test, in particular to a solar water heater efficiency test system and method.
Background
The solar water heating system collects solar heat by using a solar heat collector, enables solar light energy to be fully converted into heat energy under the irradiation of sunlight, automatically controls functional components such as a circulating pump or an electromagnetic valve through a control system to transmit the heat collected by the system to a large water storage and heat preservation water tank, and heats water in the water storage and heat preservation water tank to form stable quantitative energy equipment by matching with equivalent energy sources such as electric power, gas, fuel oil and the like. The system can provide hot water for production and living, and can also be used as a cold and heat source in other solar energy utilization forms.
The solar water heater mainly comprises a heat collector and a heat accumulator, wherein the heat collector is the key of the whole technology and is directly related to the service performance of the solar water heater. The environmental temperature, the inlet and outlet temperature of the heat collector, the solar irradiance, the working medium flow and the like are important performance parameters for measuring the work of the heat collector, so that all the performance parameters of the heat collector during work can be acquired in real time under different environmental conditions, and a basis is provided for detecting the performance of the solar heat collector and further improving products.
Due to the limitation of testing technologies and environments in various places, most of the existing testing systems are discrete (single-station) and only one water heater can be detected at a time, so that in the testing process, operators need to run from one station to another station to set one by one, the automation level is low, time is delayed, and the efficiency is influenced.
Disclosure of Invention
Therefore, the invention aims to solve the technical problem that in the prior art, the efficiency testing system of the solar water heater can only detect one water heater at a time, which delays time and influences efficiency.
In order to solve the above technical problem, the present invention provides a solar water heater efficiency testing system, including: a water supply system, the water supply system comprising: the constant-temperature water tank is connected with the heating device and the refrigerating device respectively, the water collector is connected with the return water tank, the return water tank is connected with the constant-temperature water tank through the water inlet pump and the first electromagnetic valve, and the constant-temperature water tank is connected with the water outlet pump; a test piping system, the test piping system including a plurality of test stations, each test station including: the system comprises a heat exchanger, a first circulating pump, a first temperature sensor, a second temperature sensor, a third temperature sensor, a flow meter, a three-way valve, a second electromagnetic valve, a solar heat collector and a heat storage water tank; the solar heat collector is connected with the heat storage water tank, a first temperature sensor, a second temperature sensor and a third temperature sensor are respectively arranged at the inlet, the outlet and the middle part of the heat storage water tank, the heat exchanger, the flowmeter, the first circulating pump, the three-way valve, the first temperature sensor, the heat storage water tank, the second temperature sensor and the second electromagnetic valve are sequentially connected, and the plurality of testing stations are connected in parallel through the heat exchanger; the water outlet pump is connected with the heat exchanger of each testing station, the three-way valve of each testing station is connected with the water outlet, after the solar water heater is tested, hot water in the water heater is converged by the water collector and then enters the water return water tank, and the water return water tank is sent to the constant-temperature water tank through the first electromagnetic valve by the water inlet pump; a control system, the control system comprising: the solar water heater testing system comprises an upper computer and a lower computer, wherein a testing station required to be tested is selected by the upper computer, parameters of the solar water heater are transmitted to the lower computer of the solar water heater testing system through a TCP/IP protocol, the lower computer is used for collecting and measuring the testing parameters of the testing station, the testing parameters comprise ambient temperature, solar irradiance, inlet and outlet temperature of a heat storage water tank and flow parameters, the testing parameters are uploaded to the upper computer through the TCP/IP protocol, and the upper computer receives the testing parameters and stores and processes the testing parameters.
In one embodiment of the present invention, the heating device includes: the constant-temperature water tank, the second circulating pump, the electric heater and the third electromagnetic valve are connected in sequence.
In one embodiment of the present invention, the refrigerating apparatus comprises: the centrifugal water pump enables water in the constant-temperature water tank to pass through the fourth electromagnetic valve, pass through the refrigeration air conditioner and then return to the constant-temperature water tank for refrigeration circulation.
In one embodiment of the invention, a glass plate liquid level meter for observing the water level is arranged on the side wall of the constant temperature water tank, a tap water inlet is arranged at the bottom of the constant temperature water tank, a stirrer for homogenizing the water temperature in the tank is arranged at the top of the constant temperature water tank, and a thermal insulation material is arranged on the wall of the constant temperature water tank.
In one embodiment of the invention, the solar heat collector further comprises an air blowing device arranged on one side of the solar heat collector, an anemometer, a total radiation meter and an ambient temperature sensor, wherein the air blowing device blows air to the solar heat collector horizontally.
In one embodiment of the present invention, the first temperature sensor and the second temperature sensor are both connected to an insulating pipe on a side away from the hot water storage tank, and the insulating pipe is made of a material including: polyurethane, rubber and plastic.
In one embodiment of the present invention, the control system further comprises: temperature transmitter, data acquisition module, the electric current or the voltage signal that follow temperature transmitter carried out are gathered to first data acquisition module to signal through the serial ports conversion transmission to the next computer of gathering, gather the signal and include: the inlet and outlet temperature of the heat storage water tank, the ambient temperature and the solar irradiance.
In one embodiment of the present invention, the control system further comprises: the intelligent water circulation system comprises a first output module, a frequency converter, an intelligent adapter and a PID module, wherein the first water circulation pump is a frequency conversion water pump, the flowmeter is an electromagnetic flowmeter, signals of the electromagnetic flowmeter are changed into serial communication signals through the intelligent adapter, a lower computer finishes reading the signals through a serial port, the lower computer acquires the flow value of the flowmeter, performs filtering processing, takes the acquired flow value and the set flow value as two inputs of the PID module and outputs voltage signals after processing of the PID module, the frequency converter receives the voltage signals through the first output module, and changes the rotating speed of the frequency conversion water pump by changing the voltage of the frequency converter, so that the flow of working media in a pipeline is changed.
In one embodiment of the present invention, the control system further comprises: and the second output module is in communication connection with a lower computer, and the lower computer controls the second circulating pump and the centrifugal water pump through the second output module.
The invention also provides a testing method using the solar water heater efficiency testing system, which is characterized by comprising the following steps: through the heating cycle process of the heating device or the refrigeration cycle process of the refrigerating device, when the temperature change detected by the first temperature sensor is not more than +/-0.1 ℃ within 5min, the average value of the first temperature sensor, the second temperature sensor and the third temperature sensor is used as the average temperature of the heat storage water tank; then, the read value of the electromagnetic flowmeter is compared with the value set by an upper computer, the control of the flow pump is realized through a frequency converter, the fluctuation of the flow does not exceed +/-1% within 5min, and the flow reaches a steady state; and when the flow and the temperature of the water in the system reach steady states, detecting the efficiency of the solar water heater.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the system and the method for testing the efficiency of the solar water heater, the TCP/IP network communication between the upper computer and the lower computer is realized, the efficiency of a plurality of household solar water heaters can be simultaneously detected, the automation level is high, an operator can read the parameter setting and test data of all systems only through the upper computer, and the operation efficiency is high; the constant temperature water tank effectively controls the temperature in the constant temperature water tank through the heating device and the refrigerating device, and the purpose of saving water is realized through the return water tank.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
Fig. 1 is a structural diagram of a solar water heater efficiency testing system according to the present invention.
Fig. 2 is a block diagram of the control system of the present invention.
The specification reference numbers indicate: 1. a constant temperature water tank; 2. a water collector; 3. a return water tank; 4. a first solenoid valve; 5. a water inlet pump; 6. discharging the water pump; 7. a heat exchanger; 8. a first circulation pump; 9. a flow meter; 10. a three-way valve; 11. a second solenoid valve; 12. a solar heat collector; 13. a heat storage water tank; 14. a first temperature sensor; 15. a second temperature sensor; 16. a third temperature sensor; 17. a water outlet; 18. a second circulation pump; 19. an electric heater; 20. a third electromagnetic valve; 21. a centrifugal water pump; 22. a refrigeration air conditioner; 23. a fourth solenoid valve; 24. a glass plate level gauge; 25. a stirrer; 26. a blowing device; 27. an anemometer; 28. a total radiation meter; 29. an ambient temperature sensor; 30. a heat-insulating pipeline; 31. and (4) a heat-insulating material.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1 and 2, the solar water heater performance testing system of the present invention includes: the system comprises a water supply system, a test pipeline system and a control system; the water supply system includes: the constant-temperature water tank comprises a constant-temperature water tank 1, a water collector 2, a return water tank 3, a first electromagnetic valve 4, a water inlet pump 5, a water outlet pump 6, a heating device and a refrigerating device, wherein the constant-temperature water tank 1 is respectively connected with the heating device and the refrigerating device, the water collector 2 is connected with the return water tank 3, the return water tank 3 is connected with the constant-temperature water tank 1 through the water inlet pump 5 and the first electromagnetic valve 4, and the constant-temperature water tank 1 is connected with the water outlet pump 6; the test piping system includes a plurality of test stations, each test station including: the system comprises a heat exchanger 7, a first circulating pump 8, a first temperature sensor 14, a second temperature sensor 15, a third temperature sensor 16, a flow meter 9, a three-way valve 10, a second electromagnetic valve 11, a solar heat collector 12 and a hot water storage tank 13; the solar thermal collector 12 is connected with a heat storage water tank 13, a first temperature sensor 14, a second temperature sensor 15 and a third temperature sensor 16 are respectively arranged at an inlet, an outlet and the middle part of the heat storage water tank 13, the heat exchanger 7, the flowmeter 9, the first circulating pump 8, the three-way valve 10, the first temperature sensor 14, the heat storage water tank 13, the second temperature sensor 15 and the second electromagnetic valve 11 are sequentially connected, and the plurality of test stations are connected in parallel through the heat exchanger 7; the water outlet pump 6 is connected with the heat exchanger 7 of each test station, and the heat exchanger 7 is a plate heat exchanger.
The three-way valve 10 of each test station is connected with a water outlet 17, after the solar water heater is tested, hot water in the water heater is converged by a water collector 2 and then enters a return water tank 3, and the return water tank 3 is sent to the constant-temperature water tank 1 through a first electromagnetic valve 4 by a water inlet pump 5; the control system includes: the solar water heater testing system comprises an upper computer and a lower computer, wherein a testing station required to be carried out is selected by the upper computer, parameters of the solar water heater are transmitted to the lower computer of the solar water heater testing system through a TCP/IP protocol, the lower computer is used for collecting and measuring the testing parameters of the testing station, the testing parameters comprise ambient temperature, solar irradiance, inlet and outlet temperatures of a heat storage water tank 13 and flow parameters, the testing parameters are uploaded to the upper computer through the TCP/IP protocol, and the upper computer receives the testing parameters and stores and processes the testing parameters.
Through the structural arrangement, TCP/I network communication between the upper computer and the lower computer is realized, efficiency detection can be simultaneously performed on a plurality of household solar water heaters, the automation level is high, an operator can read parameter settings and test data of all systems only through the upper computer, and the operation efficiency is high; the temperature in the constant temperature water tank 1 is effectively controlled by the constant temperature water tank 1 through the heating device and the refrigerating device, and the water-saving purpose is realized by the return water tank 3.
Specifically, the heating device includes: the constant temperature water tank 1, the second circulating pump 18, the electric heater 19 and the third electromagnetic valve 20 are sequentially connected.
Specifically, the refrigeration device includes: the constant temperature water tank comprises a centrifugal water pump 21, a refrigeration air conditioner 22 and a fourth electromagnetic valve 23, wherein the centrifugal water pump 21 enables water in the constant temperature water tank 1 to pass through the fourth electromagnetic valve 23 and then return to the constant temperature water tank 1 through the refrigeration air conditioner 22 for refrigeration circulation.
By arranging the heating device and the refrigerating device, when a performance test experiment is carried out in winter or under the condition of lower temperature, the temperature of water in the large water tank is lower and cannot meet the requirement of the thermal performance experiment, and at the moment, the water temperature in the constant-temperature water tank 1 is heated by the heater until the temperature of the water in the water tank is stabilized within 20 +/-1.0 ℃; when the thermal performance test is carried out in summer or in hot weather, the initial temperature of the water in the constant-temperature water tank 1 is higher, the electric heater 19 is closed, the centrifugal water pump 21 and the refrigeration air conditioner 22 are started, and the water in the constant-temperature water tank 1 is cooled through the refrigeration air conditioner 22 until the temperature of the water in the constant-temperature water tank 1 meets the experimental requirements.
Specifically, the volume of constant temperature water tank 1 is 4t, 1 water tank lateral wall of constant temperature water tank is equipped with the glass board level gauge 24 that is used for surveing the water level, 1 water tank bottom of constant temperature water tank dress running water inlet, 1 water tank roof of constant temperature water tank is equipped with the agitator 25 that is used for even incasement temperature, and 1 tank wall of constant temperature water tank is equipped with insulation material 31.
Specifically, the solar heat collector comprises a blowing device 26 arranged on one side of the solar heat collector 12, an anemometer 27, a total radiation meter 28 and an ambient temperature sensor 29, wherein the blowing device 26 blows air to the solar heat collector 12 horizontally. The blowing device 26 can ensure that the uniform frontal wind is generated on the surface of the solar heat collector 12, and comprises: the blowing device 26 can also adjust the angle of the air outlet of the air curtain machine, so that the air outlet can realize air supply from horizontal to vertical at different angles.
Specifically, the first temperature sensor 14 and the second temperature sensor 15 are connected to the heat preservation pipe 30 on the side away from the hot water storage tank 13, and the heat preservation pipe 30 is made of materials including: polyurethane, rubber and plastic. The reduction of the heat preservation performance of the pipeline caused by the interference of the environment and the solar radiation is prevented.
Specifically, the control system further includes: temperature transmitter, data acquisition module, the electric current or the voltage signal that follow temperature transmitter carried out are gathered to first data acquisition module to signal through the serial ports conversion transmission to the next computer of gathering, gather the signal and include: the inlet and outlet temperature of the heat storage water tank 13, the ambient temperature and the solar irradiance.
The first temperature sensor 14, the second temperature sensor 15 and the third temperature sensor 16 are platinum thermal resistors, and the platinum thermal resistor temperature sensors are manufactured by using the characteristic that the resistance value of a conductor or a semiconductor changes along with the temperature change, so that the platinum thermal resistor temperature sensors have the advantages of high sensitivity, high stability and the like. The temperature transmitter consists of a measuring unit, a signal processing unit and a conversion unit, can be an STWB-H transmitter, has the functions of high precision, high shock resistance, power supply reverse connection protection and the like, and outputs a voltage signal of 0-10V.
The data acquisition module can select an ADAM-4117 data acquisition card of an eight-channel porphyry based on serial data communication, is suitable for being used under medium and long distance transmission conditions, can be directly used for measuring voltage or current signals, and can be configured by a program in the range of an input channel.
Specifically, the control system further includes: the intelligent water circulation system comprises a first output module, a frequency converter, an intelligent adapter and a PID module, wherein the first water circulation pump is a variable frequency water pump, the flowmeter 9 is an electromagnetic flowmeter 9, signals of the electromagnetic flowmeter 9 are changed into serial communication signals through the intelligent adapter, a lower computer finishes reading the signals through a serial port, the lower computer acquires the flow value of the flowmeter 9, the flow value and the set flow value are used as two inputs of the PID module through filtering processing, voltage signals are output after the flow value and the set flow value are processed by the PID module, the frequency converter receives the voltage signals through the first output module, and the rotating speed of the variable frequency water pump is changed by changing the voltage of the frequency converter, so that the flow of working media in a pipeline is changed.
The control system further comprises: and the second output module is in communication connection with a lower computer, and the lower computer controls the second circulating pump 18 and the centrifugal water pump 21 through the second output module.
The first output module and the second output module can adopt ADAM-4024 analog quantity output modules. The ADAM-4024 analog output module is suitable for long-distance transmission, has 4 analog output channels and has 12-bit resolution.
The testing method of the solar water heater efficiency testing system comprises the following steps:
when the first temperature sensor 14 detects that the temperature variation does not exceed ± 0.1 ℃ within 5min through the heating cycle process of the heating device or the refrigerating cycle process of the refrigerating device, the average value of the first temperature sensor 14, the second temperature sensor 15 and the third temperature sensor 16 is taken as the average temperature of the hot water storage tank 13. This is because the hot water storage tank 13 is distributed in layers, and the average temperature of the medium in the hot water storage tank cannot be directly measured. So when the average of the three sensors is used as the average temperature of the tank.
Then, the read value of the electromagnetic flowmeter 9 is compared with the value set by an upper computer, and finally the flow pump is controlled by a frequency converter, the fluctuation of the flow does not exceed +/-1% within 5min, and the flow reaches a steady state;
and when the flow and the temperature of the water in the system reach steady states, detecting the efficiency of the solar water heater.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (10)
1. A solar water heater efficiency test system is characterized by comprising:
a water supply system, the water supply system comprising: the constant-temperature water tank is connected with the heating device and the refrigerating device respectively, the water collector is connected with the return water tank, the return water tank is connected with the constant-temperature water tank through the water inlet pump and the first electromagnetic valve, and the constant-temperature water tank is connected with the water outlet pump;
a test piping system, the test piping system including a plurality of test stations, each test station including: the system comprises a heat exchanger, a first circulating pump, a first temperature sensor, a second temperature sensor, a third temperature sensor, a flow meter, a three-way valve, a second electromagnetic valve, a solar heat collector and a heat storage water tank;
the solar heat collector is connected with the heat storage water tank, a first temperature sensor, a second temperature sensor and a third temperature sensor are respectively arranged at the inlet, the outlet and the middle part of the heat storage water tank, the heat exchanger, the flowmeter, the first circulating pump, the three-way valve, the first temperature sensor, the heat storage water tank, the second temperature sensor and the second electromagnetic valve are sequentially connected, and the plurality of testing stations are connected in parallel through the heat exchanger;
the water outlet pump is connected with the heat exchanger of each testing station, the three-way valve of each testing station is connected with the water outlet, after the solar water heater is tested, hot water in the water heater is converged by the water collector and then enters the water return water tank, and the water return water tank is sent to the constant-temperature water tank through the first electromagnetic valve by the water inlet pump;
a control system, the control system comprising: the solar water heater testing system comprises an upper computer and a lower computer, wherein a testing station required to be tested is selected by the upper computer, parameters of the solar water heater are transmitted to the lower computer of the solar water heater testing system through a TCP/IP protocol, the lower computer is used for collecting and measuring the testing parameters of the testing station, the testing parameters comprise ambient temperature, solar irradiance, inlet and outlet temperature of a heat storage water tank and flow parameters, the testing parameters are uploaded to the upper computer through the TCP/IP protocol, and the upper computer receives the testing parameters and stores and processes the testing parameters.
2. A solar water heater performance testing system as claimed in claim 1, wherein said heating means comprises: the constant-temperature water tank, the second circulating pump, the electric heater and the third electromagnetic valve are connected in sequence.
3. A solar water heater performance testing system as claimed in claim 1 wherein said refrigeration means comprises: the centrifugal water pump enables water in the constant-temperature water tank to pass through the fourth electromagnetic valve, pass through the refrigeration air conditioner and then return to the constant-temperature water tank for refrigeration circulation.
4. The solar water heater efficiency testing system according to claim 1, wherein the side wall of the thermostatic water tank is provided with a glass plate liquid level meter for observing water level, the bottom of the thermostatic water tank is provided with a running water inlet, the top of the thermostatic water tank is provided with a stirrer for homogenizing water temperature in the tank, and the wall of the thermostatic water tank is provided with heat insulating material.
5. The solar water heater efficiency testing system of claim 1, further comprising an air blowing device, an anemometer, a total radiometer and an ambient temperature sensor, the air blowing device being disposed on one side of the solar thermal collector, the air blowing device blowing the solar thermal collector horizontally.
6. The solar water heater performance testing system of claim 1, wherein the first temperature sensor and the second temperature sensor are connected to a thermal insulation pipe at a side away from the hot water storage tank, and the thermal insulation pipe is made of a material comprising: polyurethane, rubber and plastic.
7. A solar water heater performance testing system as claimed in claim 1 wherein said control system further comprises: temperature transmitter, data acquisition module, the electric current or the voltage signal that follow temperature transmitter carried out are gathered to first data acquisition module to signal through the serial ports conversion transmission to the next computer of gathering, gather the signal and include: the inlet and outlet temperature of the heat storage water tank, the ambient temperature and the solar irradiance.
8. A solar water heater performance testing system as claimed in claim 1 wherein said control system further comprises: the intelligent water circulation system comprises a first output module, a frequency converter, an intelligent adapter and a PID module, wherein the first water circulation pump is a frequency conversion water pump, the flowmeter is an electromagnetic flowmeter, signals of the electromagnetic flowmeter are converted into serial communication signals through the intelligent adapter, and a lower computer finishes reading the signals through a serial port; the lower computer acquires the flow value of the flowmeter, the flow value is subjected to filtering processing, the acquired flow value and the set flow value are used as two inputs of the PID module, a voltage signal is output after the flow value and the set flow value are processed by the PID module, the frequency converter receives the voltage signal through the first output module, and the rotating speed of the variable frequency water pump is changed by changing the voltage of the frequency converter, so that the flow of the working medium in the pipeline is changed.
9. A solar water heater performance testing system as claimed in claim 1 wherein said control system further comprises: and the second output module is in communication connection with a lower computer, and the lower computer controls the second circulating pump and the centrifugal water pump through the second output module.
10. A testing method using a solar water heater performance testing system according to any one of claims 1 to 9, comprising:
through the heating cycle process of the heating device or the refrigeration cycle process of the refrigerating device, when the temperature change detected by the first temperature sensor is not more than +/-0.1 ℃ within 5min, the average value of the first temperature sensor, the second temperature sensor and the third temperature sensor is used as the average temperature of the heat storage water tank;
then, the read value of the electromagnetic flowmeter is compared with the value set by an upper computer, the control of the flow pump is realized through a frequency converter, the fluctuation of the flow does not exceed +/-1% within 5min, and the flow reaches a steady state;
and when the flow and the temperature of the water in the system reach steady states, detecting the efficiency of the solar water heater.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114475466A (en) * | 2022-01-18 | 2022-05-13 | 黑系智能装备(威海)有限公司 | Car as a house thermal cycle management system and control method thereof |
| CN117054794A (en) * | 2023-10-10 | 2023-11-14 | 北京中家智锐智能装备科技有限公司 | Water heater detection method and device |
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| CN206488920U (en) * | 2017-02-25 | 2017-09-12 | 沈阳工程学院 | A kind of solar water heater hot property TT＆C system based on wisdom room |
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| CN114475466A (en) * | 2022-01-18 | 2022-05-13 | 黑系智能装备(威海)有限公司 | Car as a house thermal cycle management system and control method thereof |
| CN117054794A (en) * | 2023-10-10 | 2023-11-14 | 北京中家智锐智能装备科技有限公司 | Water heater detection method and device |
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Address after: 215000 No.10 Sanya Road, high tech Industrial Park, Yushan Town, Changshu City, Suzhou City, Jiangsu Province Patentee after: Changshu Engineering Quality Testing Center Co.,Ltd. Address before: 215000 No.10 Sanya Road, high tech Industrial Park, Yushan Town, Changshu City, Suzhou City, Jiangsu Province Patentee before: Changshu Engineering Quality Inspection Center |