An experimental test platform for testing the heating and cooling performance of HVAC products

Abstract

The present invention discloses an experimental test platform for testing the heating and cooling performance of HVAC products, including a first HVAC platform, a second HVAC platform, a first equipment room and a second equipment room. The first HVAC platform and the second HVAC platform are two rooms with the same area and height, with the same equipment and piping system, refrigeration equipment is arranged on the top, floor heating is laid on the bottom, and an air-conditioning system is arranged. A refrigeration unit is arranged in the first equipment room to provide refrigeration for the platform; a cold and heat source is arranged in the second equipment room, including a water machine central air-conditioning main unit and a wall-mounted boiler, to provide hot and cold water for the fan coil and manifold in the platform. The present invention provides an accurate and complete experimental site, which can simulate simulation scenes, output detailed parameter data, and conduct qualitative and quantitative analysis, so that some tests are no longer limited to specific seasons; multiple temperature-humidity probes are configured, and a temperature-humidity recorder module is used to accurately and systematically record all HVAC parameters.

Description

Technical Field

[0001] The invention belongs to the technical field of HVAC products, and in particular relates to an experimental test platform for testing the heating and cooling performance of HVAC products. Background Art

[0002] With the development of society, the heating and cooling systems of household HVAC have become diversified. The conventional evaluation of the quality of a system or product can only analyze its parameter performance and appearance, and cannot conduct qualitative and quantitative analysis; at the same time, some tests can only be carried out in specific seasons, such as the heating effect test can only be carried out in winter, and the cooling effect test can only be carried out in summer; it is impossible to provide the same conditions at the same time for comparative simulation tests; conventional tests cannot accurately and systematically record all HVAC parameters. Summary of the invention

[0003] In view of the above problems, the present invention provides an experimental test platform for testing the heating and cooling performance of HVAC products, which solves the technical problems that the traditional HVAC system cannot perform qualitative and quantitative analysis and the heating and cooling tests cannot be compared at the same time. This platform provides a precise and complete experimental site, which can simulate simulation scenes and output detailed data.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] An experimental test platform for testing the heating and cooling performance of HVAC products, comprising a first HVAC platform, a second HVAC platform, a first equipment room and a second equipment room, wherein the first HVAC platform and the second HVAC platform are two rooms with the same area and height and have the same equipment and piping system, refrigeration equipment is arranged on the top of the first HVAC platform and the second HVAC platform, floor heating is laid on the bottom, and an air-conditioning system is arranged, a refrigeration unit is arranged in the first equipment room, and refrigeration is provided for the first HVAC platform and the second HVAC platform by controlling the refrigeration equipment; a cold and heat source is arranged in the second equipment room, including a water machine central air-conditioning main unit and a wall-mounted boiler, and cold and hot water are provided for the fan coil units of the air-conditioning system in the first HVAC platform and the second HVAC platform and the manifold of the floor heating, and different heating and cooling systems to be tested are placed in the first HVAC platform and the second HVAC platform.

[0006] Furthermore, the walls and tops of the first HVAC platform and the second HVAC platform are insulated with glass magnesium boards, and multiple temperature probes are arranged in the first HVAC platform and the second HVAC platform; the temperature probes use platinum resistance temperature sensors, which can accurately collect the real-time temperature of each point.

[0007] Furthermore, in each room of the first HVAC platform and the second HVAC platform, 12 temperature probes are provided on the floor, 5 temperature probes are provided on the ceiling, 3 temperature probes are provided on the wall with doors, and 5 temperature probes are provided on the other walls.

[0008] Furthermore, a temperature and humidity detection rack is provided on the floor of each room of the first HVAC platform and the second HVAC platform, and temperature probes and humidity probes are provided at different heights on the temperature and humidity detection rack.

[0009] Furthermore, the temperature probe collects the measured temperature to the temperature recorder module, records the temperature of each point every two minutes, and outputs the temperature change curve of each point at the same time.

[0010] Furthermore, the same refrigeration equipment is provided on the top of the first HVAC platform and the second HVAC platform. The refrigeration equipment is a refrigeration evaporator. The refrigeration evaporator and the refrigeration unit are electrically connected. When the refrigeration unit is started, the refrigeration evaporator will distribute cold air to each room of the first HVAC platform and the second HVAC platform.

[0011] Furthermore, the cold and hot sources of the second equipment room are linked by a water-cooled central air-conditioning unit and a wall-mounted boiler. The water-cooled central air-conditioning unit can provide hot and cold water at 8°C-45°C, and the wall-mounted boiler can provide hot water at a maximum of 60°C. The two systems are reasonably regulated through water tanks and related pipelines to achieve the required water temperature. The hot and cold water are output through the outlet pipe and returned through the return pipe.

[0012] Furthermore, the outlet pipe and return pipe coming out of the second equipment room enter the first HVAC platform and the second HVAC platform through pipes, one of which leads to the fan coil unit on the top and is used as an air-conditioning system, one leads to the manifold and is used for floor heating, and one is reserved for use as a heating radiator and a capillary network.

[0013] Furthermore, a distribution box with an electric meter is provided in the first equipment room. All equipment in the experimental test platform is powered by the distribution box. Each circuit is equipped with an independent electric meter, which can read the power consumption of each device in the experimental test platform.

[0014] Through the technical solution of the present invention, an accurate and complete experimental site is provided, which can simulate simulation scenes, output detailed parameter data, and conduct qualitative and quantitative analysis. In addition, since the technical solution of the present invention can simulate various temperature conditions under real conditions, some tests are no longer limited to specific seasons; the present invention is equipped with multiple temperature probes and cooperates with the temperature recorder module, which can accurately and systematically record all HVAC parameters for comparative analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the planar structure of the test platform of the present invention;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the test platform of the present invention;

[0017] Figure 3It is a schematic diagram of the top refrigeration system of the first HVAC platform and the second HVAC platform of the present invention;

[0018] Figure 4 The temperature probe distribution diagram of the top and the ground of the first HVAC platform and the second HVAC platform of the present invention;

[0019] Figure 5 The temperature probe distribution diagram of each wall surface of the first HVAC platform and the second HVAC platform of the present invention;

[0020] Figure 6 It is a schematic diagram of the structure of the temperature and humidity detection frame of the test platform of the present invention;

[0021] In the figure: 1. First HVAC platform; 2. Second HVAC platform; 3. First equipment room; 4. Second equipment room; 5. Refrigeration unit; 6. Water central air-conditioning unit; 7. Wall-mounted boiler; 8. Fan coil unit; 9. Manifold; 10. Temperature probe; 11. Temperature and humidity detection rack; 12. Humidity probe; 13. Water outlet pipe; 14. Return pipe; 15. Distribution box; 16. Floor heating; 17. Water tank; 18. Water softener; 19. Refrigeration evaporator. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1-2 As shown, this platform provides a precise and complete experimental site that can simulate simulation scenarios and output detailed data.

[0024] Specifically: an experimental test platform for testing the heating and cooling performance of HVAC products, including a first HVAC platform 1, a second HVAC platform 2, a first equipment room 3 and a second equipment room 4. The first HVAC platform 1 and the second HVAC platform 2 are two rooms with the same area and height, and have the same internal conditions such as equipment and piping systems. Refrigeration equipment is arranged on the top of the first HVAC platform 1 and the second HVAC platform 2, and floor heating 16 is laid on the bottom, and an air-conditioning system is arranged. A refrigeration unit 5 is arranged in the first equipment room 3, and refrigeration is provided for the first HVAC platform 1 and the second HVAC platform 2 by controlling the refrigeration equipment; a cold and heat source is arranged in the second equipment room 4, including a water machine central air-conditioning main unit 6 and a wall-mounted boiler 7, which provide hot and cold water for the fan coil 8 of the air-conditioning system in the first HVAC platform 1 and the second HVAC platform 2 and the manifold 9 of the floor heating 16, and different heating and cooling systems to be tested are placed in the first HVAC platform 1 and the second HVAC platform 2.

[0025] A distribution box 15 with an electric meter is installed on the wall of the first equipment room 3. The power supply of all the equipment on the experimental platform is connected from here. Each line has an independent electric meter, so the power consumption of each equipment on the experimental platform can be read from here; the refrigeration unit 5 is placed here to provide cooling for the top of the first HVAC platform 1 and the second HVAC platform 2.

[0026] The second equipment room 4 provides a cold and hot source for the experimental platform. The water machine central air conditioning host 6 provides hot and cold water of 8℃-45℃ for the laboratory platform; the wall-mounted boiler 7 provides high-temperature hot water of 45℃-60℃; they are adjusted through the water tank 17; the soft water unit 18 protects the entire system from scaling; the final hot and cold water is output through the outlet pipe 13 and returned by the return pipe 14. The outlet pipe 13 and the return pipe 14 from the second equipment room 4 lead to the first HVAC platform 1 and the second HVAC platform 2, connected to the fan coil 8, the manifold 9, and the reserved water inlet and return port, which can be connected to water heating equipment; the fan coil 8 can be replaced with various models, and can be disassembled and replaced with other air conditioners; the manifold 9 is connected to the ground heating 16, and after the installation of the floor heating 16, concrete is poured and then leveled for heating the experimental platform.

[0027] The first HVAC platform 1 and the second HVAC platform 2 of the present invention are two rooms with the same area and height. The walls and the top of the rooms are insulated with 50mm thick glass magnesium plates. The equipment and piping systems of the two platforms are the same. The first HVAC platform 1 and the second HVAC platform 2 have the same refrigeration device on the top, that is, the refrigeration evaporator 19. Figure 3 As shown, when the refrigeration unit 5 is started, the refrigeration evaporator 19 will emit cold air to the two rooms.

[0028] The experimental platform of the present invention can simulate various temperature conditions under real conditions, such as low temperature of about 0°C and high temperature of 35°C. Cooling is achieved by the top refrigeration equipment, namely the refrigeration evaporator 19 module. The refrigeration unit is started, and the coolant is input to the refrigeration evaporator 19, and then the temperature is reduced. The high temperature is achieved by the air conditioning system or the laying of the floor heating system.

[0029] The present invention uses two rooms, each with a different system placed in it, and gives the same conditions for comparison.

[0030] like Figure 4-5As shown, the present invention evenly arranges the same temperature probes 10 on the walls, ceiling and floor around each HVAC platform room, wherein 12 temperature probes 10 are arranged on the floor, 5 temperature probes 10 are arranged on the ceiling, 3 temperature probes 10 are arranged on the wall with a door, and 5 temperature probes 10 are arranged on the other walls, that is, there are 35 temperature probes 10 on all inner surfaces. The temperature probe 10 adopts a platinum resistance temperature sensor, which can accurately collect the real-time temperature of each point. Except for the ground sensor which can be moved, the others are fixedly installed. The temperature probe 10 can output the temperature change of the room as data;

[0031] In addition, if Figure 6 As shown, a temperature and humidity detection rack 11 is placed in the middle of the first HVAC platform 1 and the second HVAC platform 2. It is a vertically arranged rack with five temperature probes installed at heights of 0.1m, 0.6m, 1.1m, 1.7m and 2.5m respectively, and a humidity probe 12 is also installed at a height of 1.7m.

[0032] The temperature probes of the present invention are finally gathered into 9 temperature recorder modules, which record the temperature of each point every two minutes and output the temperature change curve of each point at the same time. The temperature recorder module is an external device used to summarize the detected temperature and generate a temperature curve.

[0033] The present invention reserves a plurality of digital electric meters, and each heat source has an independent electric meter, so that the power consumption can be measured when each HVAC system is started.

[0034] HVAC system evaluation

[0035] The quality of HVAC system is usually evaluated by testing the system's heating speed, body comfort, energy consumption and other aspects. This system can provide measurement and control in this regard. And sort out the data;

[0036] Heating speed measurement and control: mainly the temperature probes on various surfaces are evenly distributed around the room, on the ground and on the top, and then a heating curve can be formed by transmitting data every two minutes. Then, by analyzing the heating curve of each area, the heating speed of the system can be determined.

[0037] Determination of perceived comfort: The average indoor radiation temperature is calculated through the temperature probes on the surface of the enclosure structure and in the space distribution in the room. Combined with the calculation formula of the predicted average vote number PMV and the predicted percentage of dissatisfaction PPD, the PMV value between -0.5 and 0.5 and the PPD value between 0 and 10% indicate that the human body is in a comfortable state in this steady-state thermal environment.

[0038] Energy consumption determination: If the heating equipment is measured, first enable the roof cooling, lower the indoor temperature to a certain temperature, wait for the temperature to be balanced, then start the heating equipment, and then run it to the set temperature for 24 hours, and observe the energy consumption of the electric meter. If the cooling equipment is measured, first enable the bottom floor heating, raise the temperature to a certain temperature, wait for the temperature to be balanced, then start the cooling equipment, and then run it to the set temperature for 24 hours, and observe the energy consumption of the electric meter. Then evaluate the system through comprehensive data.

[0039] HVAC system comparison

[0040] Because the platform has two identical rooms, different systems are installed in these two rooms, and then the roof cooling or floor heating is started to raise / lower the temperature to the set temperature range, and then the two systems are started to conduct real-time comparative analysis of the effects of the two systems through temperature probes and electricity meters.

[0041] Hydraulic research of floor heating system

[0042] A hole is opened at the bottom of the two rooms. One room is filled with a floor heating pipe, and the other room is filled with two floor heating pipes of the same length. Then the roof cooling or floor heating is started, the temperature is raised / lowered to the set temperature range, and then the two systems are started. The temperature probe and electric meter are used to conduct real-time comparative analysis of the temperature rise of the two rooms.

[0043] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An experimental test platform for testing the heating and cooling performance of HVAC products, characterized in that: The system comprises a first HVAC platform (1), a second HVAC platform (2), a first equipment room (3) and a second equipment room (4); the first HVAC platform (1) and the second HVAC platform (2) are two rooms of the same area and height, having the same equipment and piping system, a refrigeration device is arranged on the top, a floor heating (16) is laid on the bottom, and an air conditioning system is arranged; a refrigeration unit (5) is arranged in the first equipment room (3), and refrigeration is provided for the first HVAC platform (1) and the second HVAC platform (2) by controlling the refrigeration device; a cold and hot source is arranged in the second equipment room (4), including a water machine central air conditioning main unit (6) and a wall-mounted boiler (7), and cold and hot water are provided for the fan coil units (8) of the air conditioning systems in the first HVAC platform (1) and the second HVAC platform (2) and the manifold (9) of the floor heating (16); different heating and cooling systems to be tested are placed in the first HVAC platform (1) and the second HVAC platform (2); The walls and top of the first HVAC platform (1) and the second HVAC platform (2) are insulated with glass magnesium plates, and a plurality of temperature probes (10) are arranged in the first HVAC platform (1) and the second HVAC platform (2); The same refrigeration equipment is provided on the top of the first HVAC platform (1) and the second HVAC platform (2), wherein the refrigeration equipment is a refrigeration evaporator (19), and the refrigeration evaporator (19) is electrically connected to the refrigeration unit (5). When the refrigeration unit (5) is started, the refrigeration evaporator (19) will emit cold air to each room of the first HVAC platform (1) and the second HVAC platform (2); The cold and hot sources of the second equipment room (4) are linked by a water-cooled central air-conditioning main unit (6) and a wall-mounted boiler (7). The water-cooled central air-conditioning main unit (6) can provide hot and cold water at 8°C-45°C, and the wall-mounted boiler (7) can provide hot water at a maximum temperature of 60°C. The two systems are reasonably regulated through a water tank (17) and related pipelines to achieve the required water temperature. The hot and cold water are output through a water outlet pipe (13) and returned through a water return pipe (14).

2. The experimental test platform for testing the heating and cooling performance of HVAC products according to claim 1 is characterized in that: The temperature probe (10) uses a platinum resistance temperature sensor and can accurately collect the instantaneous temperature of each point.

3. The experimental test platform for testing the heating and cooling performance of HVAC products according to claim 2 is characterized in that: In each room of the first HVAC platform (1) and the second HVAC platform (2), 12 temperature probes (10) are arranged on the floor, 5 temperature probes (10) are arranged on the ceiling, 3 temperature probes (10) are arranged on the wall with a door, and 5 temperature probes (10) are arranged on the other walls.

4. The experimental test platform for testing the heating and cooling performance of HVAC products according to claim 3 is characterized in that: A temperature and humidity detection rack (11) is provided on the floor of each room of the first HVAC platform (1) and the second HVAC platform (2), and a temperature probe (10) and a humidity probe (12) are provided at different heights on the temperature and humidity detection rack (11).

5. The experimental test platform for testing the heating and cooling performance of HVAC products according to claim 3 is characterized in that: The temperature probe (10) collects the measured temperature on the temperature recorder module, records the temperature of each point every two minutes, and outputs the temperature change curve of each point at the same time.

6. The experimental test platform for testing the heating and cooling performance of HVAC products according to claim 1, characterized in that: The water outlet pipe (13) and the water return pipe (14) from the second equipment room (4) enter the first HVAC platform (1) and the second HVAC platform (2) through pipes, one of which leads to the fan coil unit (8) at the top for use as an air conditioning system, one leads to the manifold (9) for use as floor heating (16), and one is reserved for use as a heating radiator and a capillary network.

7. The experimental test platform for testing the heating and cooling performance of HVAC products according to claim 1 is characterized in that: A distribution box (15) with an electric meter is also provided in the first equipment room (3). All equipment in the experimental test platform is powered by the distribution box (15). Each circuit is provided with an independent electric meter, which can read the power consumption of each equipment in the experimental test platform.

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