Energy-saving enthalpy difference test room

Abstract

The invention relates to an energy-saving enthalpy difference test room, which comprises two adjacent rooms, namely an indoor environment simulation room and an outdoor environment simulation room, and further comprises an indoor air handling unit, an outdoor air handling unit and an indoor and outdoor air exchange unit, the outdoor environment simulation chamber is used for placing an outdoor unit of an air conditioner to be tested, the indoor air processing unit is installed in the indoor environment simulation chamber and can adjust the temperature of the indoor environment simulation chamber, and the outdoor air processing unit is installed in the outdoor environment simulation chamber and can adjust the temperature of the outdoor environment simulation chamber. The indoor and outdoor air exchange unit is communicated with the indoor environment simulation chamber and the outdoor environment simulation chamber, and cold / hot air generated by the indoor unit of the tested machine can be introduced into the outdoor environment simulation chamber.

Description

Technical Field

[0001] The invention belongs to the technical field of air-conditioning production testing, and in particular relates to an energy-saving enthalpy difference test chamber. Background Art

[0002] With the continuous improvement of living conditions, air conditioners have been widely used in various places in people's lives. In order to ensure the quality of air conditioners, air conditioners must undergo a series of strict inspections before leaving the factory. Only when all indicators meet national standards can they be put on the market. At present, enthalpy difference test rooms are a commonly used testing method for testing various parameters of air conditioner products.

[0003] At present, air-conditioning related equipment manufacturers generally increase their R&D efforts to improve product performance, and the demand for enthalpy difference test chambers continues to increase. Due to the large number of test chambers, many manufacturers have very high daily test electricity costs. For example, a normally configured 5HP air-conditioning enthalpy difference test chamber has a total power supply capacity of more than 180KW. The power consumption of the enthalpy difference chamber during various working conditions is between 60 and 120kW, and the daily operating electricity cost is considerable. Therefore, the development of energy-saving enthalpy difference test chambers is in line with the mainstream trend of environmental protection. Summary of the invention

[0004] The purpose of the present invention is to provide an energy-saving enthalpy difference test chamber, aiming to meet the increasing demand for energy saving and environmental protection for enthalpy difference test chambers in the prior art.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] An energy-saving enthalpy difference test room, the enthalpy difference test room includes two adjacent rooms, namely an indoor environment simulation room and an outdoor environment simulation room, and also includes: an indoor air handling unit, an outdoor air handling unit and an indoor and outdoor air exchange unit. The indoor environment simulation room is used to place the indoor unit of the air conditioner to be tested, and the indoor environment simulation room is provided with a temperature and humidity sensor; the outdoor environment simulation room is used to place the outdoor unit of the air conditioner to be tested, and the outdoor environment simulation room is provided with a temperature and humidity sensor; the indoor air handling unit is installed in the indoor environment simulation room, and the temperature and humidity of the indoor environment simulation room can be adjusted; the outdoor air handling unit is installed in the outdoor environment simulation room, and the temperature and humidity of the outdoor environment simulation room can be adjusted; the indoor and outdoor air exchange unit connects the indoor environment simulation room and the outdoor environment simulation room, and the air in the indoor environment simulation room can be passed into the outdoor environment simulation room.

[0007] The beneficial effect of the present invention is that an indoor and outdoor air exchange unit is set up to assist the air handling unit to adjust the temperature and humidity in the indoor environment simulation room and the outdoor environment simulation room. When testing the air conditioning cooling or heating, the indoor and outdoor air exchange unit can be used to transfer part of the cold or heat generated by the indoor unit to the outdoor environment simulation room, thereby reducing the workload of the air handling unit in the outdoor environment simulation room. In this way, it can save electricity and energy.

[0008] Furthermore, the indoor and outdoor air exchange unit includes: an air outlet channel, a nozzle box, a three-way channel, a first air inlet channel and a second air inlet channel. An air outlet is opened on one side wall of the indoor environment simulation room, and the first end of the air outlet channel passes through the side wall of the indoor environment simulation room and is connected with the air outlet of the indoor unit; the air inlet end of the nozzle box is connected with the second end of the air outlet channel; the first end of the three-way channel is connected with the air outlet end of the nozzle box; the first end of the first air inlet channel and the first end of the second air inlet channel are respectively connected to the second end and the third end of the three-way channel; an indoor air inlet is opened on the other side wall of the indoor environment simulation room, and the second end of the first air inlet channel is connected to the indoor air inlet; an outdoor air inlet is opened on one side wall of the outdoor environment simulation room, and the second end of the second air inlet channel is connected to the outdoor air inlet.

[0009] A further beneficial effect of the present invention is that the structure of the indoor and outdoor air exchange unit is specifically defined, and different channels are used to form a passage connecting the indoor environment simulation room and the outdoor environment simulation room, so that the cold or heat generated by the indoor unit of the air conditioner to be tested in the indoor environment simulation room can be transferred to the outdoor environment simulation room, thereby rationally utilizing the energy, reducing the workload of the air handling unit, and ultimately achieving the effect of saving electricity, energy saving and environmental protection.

[0010] Furthermore, the air outlet channel includes a plurality of air ducts A connected end to end in sequence, the first air duct A passes through the side wall of the indoor environment simulation room and is connected to the air outlet of the indoor unit, and the last air duct A is connected to the air inlet end of the nozzle box.

[0011] A further beneficial effect of the present invention is that a plurality of air ducts A are used to form an air outlet channel connected to the indoor environment simulation chamber, thereby ensuring that the cold air or hot air generated by the indoor unit can flow smoothly from the subsequent units in the indoor environment simulation chamber and maintain the overall sealing.

[0012] Further, the three-way channel is a three-way pipe, the three-way pipe has a first opening, and a second opening and a third opening arranged opposite to and perpendicular to the first opening, and the first opening is connected to the air outlet of the nozzle box.

[0013] A further beneficial effect of the present invention is that the cold air or hot air sprayed out of the nozzle box is divided into two parts by using the three-way pipe.

[0014] Furthermore, the first air inlet channel includes a plurality of air ducts B connected end to end in sequence, and the second air inlet channel includes a plurality of air ducts C connected end to end in sequence, the first air duct B of the first air inlet channel is connected to the second opening of the three-way pipe, and the first air duct C of the second air inlet channel is connected to the third opening of the three-way pipe; the air duct B at the end of the first air inlet channel is connected to the air inlet of the indoor environment simulation room, and the air duct C at the end of the second air inlet channel is connected to the air inlet of the outdoor environment simulation room.

[0015] A further beneficial effect of the present invention is that a first air inlet channel and a second air inlet channel are respectively formed by multiple air ducts B and air ducts C to receive cold air or hot air diverted from the three-way channel, and to pass the cold air or hot air into the indoor environment simulation room and the outdoor environment simulation room respectively.

[0016] Furthermore, the first end and the second end of the air outlet channel, the first air inlet channel and the second air inlet channel are all provided with sealing rings, and the cross-sections of the air duct A, the air duct B and the air duct C are all rectangular.

[0017] A further beneficial effect of the present invention is that the sealing performance of the entire device is ensured by the provision of a sealing ring, thereby preventing cold air or hot air from leaking and affecting the temperature regulation in the indoor environment simulation room and the outdoor environment simulation room.

[0018] Furthermore, the indoor air handling unit includes a heater, an evaporator, a humidifier and a fan installed in sequence in the indoor environment simulation room; the outdoor air handling unit includes a heater, an evaporator, a humidifier and a fan installed in sequence in the outdoor environment simulation room.

[0019] Furthermore, a pressure balancing valve is provided between the indoor environment simulation chamber and the outdoor environment simulation chamber.

[0020] A further beneficial effect of the present invention is that the pressure between the indoor environment simulation chamber and the outdoor environment simulation chamber is balanced by using a pressure balancing valve.

[0021] An energy-saving method for an enthalpy difference test chamber is implemented by an energy-saving enthalpy difference test chamber, comprising the following steps:

[0022] Step 1: Arrange the indoor unit and outdoor unit of the air conditioner to be tested in the indoor environment simulation room and the outdoor environment simulation room respectively;

[0023] Step 2: Select the cooling performance or heating performance of the air conditioner to be tested and obtain the current temperature and humidity of the indoor environment simulation room and the outdoor environment simulation room respectively;

[0024] Step 3, start the air conditioner and use the temperature and humidity sensor to detect the temperature and humidity in the indoor environment simulation room and the outdoor environment simulation room;

[0025] Step 4: Start the indoor air handling unit and the outdoor air handling unit to maintain the stability of the temperature and humidity in the indoor environment simulation room and the outdoor environment simulation room, and start the indoor and outdoor air exchange unit to assist the indoor air handling unit and the outdoor air handling unit to adjust the temperature and humidity in the indoor environment simulation room and the outdoor environment simulation room.

[0026] The present invention also provides an energy-saving method for an enthalpy difference test room, which has the beneficial effect of exporting the cold air or hot air generated by the indoor unit of the air conditioner to be tested through the indoor and outdoor air exchange unit and reintroducing them into the indoor environment simulation room and the outdoor environment simulation room respectively, and utilizing the cold air or hot air generated by the indoor unit of the air conditioner to be tested to assist the outdoor air handling unit in adjusting the temperature and humidity in the outdoor environment simulation room, thereby reducing the workload of the outdoor air handling unit and ultimately achieving the effect of saving electricity.

[0027] Furthermore, the indoor and outdoor air exchange unit in step 4 assists in adjusting the temperature and humidity in the following manner:

[0028] If the air conditioner is in cooling mode, the cold air generated by the indoor unit is sent out through the air outlet channel and then divided into two parts by the three-way channel. One part of the cold air is re-entered into the indoor environment simulation room through the first air inlet channel, and the other part of the cold air is passed into the outdoor environment simulation room through the second air inlet channel;

[0029] If the air conditioner is in heating state, the hot air generated by the indoor unit will be sent out through the air outlet channel and then divided into two parts by the three-way channel. One part of the hot air will be re-entered into the indoor environment simulation room through the first air inlet channel, and the other part of the hot air will be entered into the outdoor environment simulation room through the second air inlet channel.

[0030] Compared with the prior art, the energy-saving enthalpy difference chamber and the energy-saving method provided by the present invention have the following significant improvements:

[0031] First, through the indoor and outdoor air exchange unit, part of the cold air or hot air generated by the indoor unit in the indoor environment simulation room is used to assist in adjusting the temperature and humidity in the outdoor environment simulation room, which can effectively reduce the workload of the original air handling unit, meet the needs of energy conservation and environmental protection, and reduce the testing cost, with good economic benefits;

[0032] Second, the indoor and outdoor air exchange unit is formed by multiple groups of air ducts and nozzle boxes, which has a simple and reliable structure, strong sealing, and does not change the overall structure of the original enthalpy difference chamber, and can be directly modified on the basis of the existing enthalpy difference chamber;

[0033] Third, it has strong applicability. Whether testing the cooling performance or heating performance of the air conditioner indoor unit, it can achieve the effect of saving electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The overall top view of the energy-saving enthalpy difference test chamber provided by the present invention;

[0035] Reference numerals

[0036] 1. Indoor environment simulation room; 110, indoor unit; 120, indoor air handling unit; 130, indoor air inlet;

[0037] 2. Outdoor environment simulation room; 210, outdoor unit; 220, outdoor air handling unit; 230, outdoor air inlet;

[0038] 3. Indoor and outdoor air exchange unit; 310. air outlet channel; 311. air duct A; 320. nozzle box; 330. three-way channel; 331. first opening; 332. second opening; 333. third opening; 340. first air inlet channel; 341. air duct B; 350. second air inlet channel; 351. air duct C;

[0039] 4. Pressure balancing valve. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0041] like Figure 1 As shown, it is a schematic diagram of the energy-saving enthalpy difference test chamber provided by the present invention. The enthalpy difference test chamber includes two adjacent rooms, namely an indoor environment simulation chamber 1 and an outdoor environment simulation chamber 2. A pressure balancing valve 4 is provided at the connection between the indoor environment simulation chamber 1 and the outdoor environment simulation chamber 2. The indoor environment simulation chamber 1 is provided with a temperature and humidity sensor for placing the indoor unit 110 of the air conditioner to be tested and obtaining various data of the indoor unit 110 of the air conditioner to be tested. The outdoor environment simulation chamber 2 is also provided with a temperature and humidity sensor for placing the outdoor unit 210 of the air conditioner to be tested and obtaining various data of the outdoor unit 210 of the air conditioner to be tested.

[0042] Indoor air handling units 120 and outdoor air handling units 220 are installed in the indoor environment simulation room 1 and the outdoor environment simulation room 2, respectively. The indoor air handling units 120 and the outdoor air handling units 220 are mainly composed of cooling, dehumidification, heating, humidification, blowers and other modules. The basic principle is to first cool down and dehumidify, and then heat up and humidify in an adjustable manner to make the room temperature and humidity reach dynamic stability. Specifically, the evaporator of the refrigeration unit is used to achieve the cooling and dehumidification functions, and the humidifier and heater are connected to the indoor air circulation path to form an air handling unit to adjust the temperature and humidity of the indoor environment simulation room 1 and the outdoor environment simulation room 2. This part is the existing technology and will not be repeated here.

[0043] In addition, the present invention is also provided with an indoor and outdoor air exchange unit 3, which connects the indoor environment simulation room 1 and the outdoor environment simulation room 2. The air of the indoor environment simulation room 1 can be introduced into the outdoor environment simulation room 2 through the indoor and outdoor air exchange unit 3. If the indoor unit 110 of the air conditioner to be tested is cooling, the outdoor unit 210 will heat up, and if the indoor unit 110 is heating, the outdoor unit 210 will cool down. Therefore, the cold air or hot air generated by the indoor unit 110 can be reasonably utilized through the indoor and outdoor air exchange unit 3, and part of it can be introduced into the outdoor environment simulation room 2 to assist the outdoor air handling unit 220 in adjusting the temperature and humidity, and reduce the workload of the outdoor air handling unit 220 to achieve the effect of saving electricity.

[0044] To further improve the technical solution, the indoor and outdoor air exchange unit 3 includes: an air outlet channel 310, a nozzle box 320, a three-way channel 330, a first air inlet channel 340 and a second air inlet channel 350. The first end of the air outlet channel 310 passes through the side wall of the indoor environment simulation chamber 1 and is connected to the air outlet of the indoor unit 110. The air inlet end of the nozzle box 320 is connected to the second end of the air outlet channel 310. The first end of the three-way channel 330 is connected to the air outlet end of the nozzle box 320. The first end of the first air inlet channel 340 and the first end of the second air inlet channel 350 are respectively connected to the three-way channel 330. An indoor air inlet 130 is opened on the other side wall of the indoor environment simulation chamber 1. The second end of the first air inlet channel 340 is connected to the indoor air inlet 130. Similarly, an outdoor air inlet 230 is opened on one side wall of the outdoor environment simulation chamber 2. The second end of the second air inlet channel 350 is connected to the outdoor air inlet 230.

[0045] Specifically, the air outlet channel 310 includes a plurality of air ducts A311 connected end to end in sequence. The first air duct A311 passes through the side wall of the indoor environment simulation chamber 1 and is connected to the air outlet of the indoor unit 110 of the air conditioner to be tested. The opening of the last air duct A311 is connected to the air inlet end of the nozzle box 320.

[0046] Specifically, the three-way channel 330 is a three-way pipe having a first opening 331 , and a second opening 332 and a third opening 333 arranged opposite to and perpendicular to the first opening 331 . The first opening 331 is connected to the air outlet of the nozzle box 320 .

[0047] Specifically, the first air inlet channel 340 includes a plurality of air ducts B341 connected end to end in sequence, and the second air inlet channel 350 includes a plurality of air ducts C351 connected end to end in sequence, the first air duct B341 of the first air inlet is connected to the second opening 332 of the three-way pipe, and the first air duct B341 of the second air inlet is connected to the third opening 333 of the three-way pipe; the air duct B341 at the end of the first air inlet is connected to the indoor air inlet 130 of the indoor environment simulation room 1, and the air duct C351 at the end of the second air inlet is connected to the outdoor air inlet 230 of the outdoor environment simulation room.

[0048] Specifically, each air duct is sealed and connected to each other, and a sealing ring is installed at the joint.

[0049] The cold air or hot air generated by the indoor unit 110 is first discharged through the air outlet channel 310, and passes through the nozzle box 320, and is ejected with power provided by the nozzle box 320, and enters the three-way channel 330, and is divided into two parts through the three-way channel 330. One part is re-entered into the indoor environment simulation chamber 1 through the first air inlet channel 340, and the other part is entered into the outdoor environment simulation chamber 2 through the second air inlet channel 350.

[0050] The present invention also provides an enthalpy difference chamber energy saving method, which is implemented by an energy-saving enthalpy difference test chamber, comprising the following steps:

[0051] Step 1: Arrange the indoor unit 110 and the outdoor unit 210 of the air conditioner to be tested in the indoor environment simulation room 1 and the outdoor environment simulation room 2 respectively;

[0052] Step 2: Select the cooling performance or heating performance of the air conditioner to be tested and obtain the current temperature and humidity of the indoor environment simulation room 1 and the outdoor environment simulation room 2 respectively;

[0053] Step 3, start the air conditioner and use the temperature and humidity sensor to detect the temperature and humidity in the indoor environment simulation room 1 and the outdoor environment simulation room 2;

[0054] Step 4, start the indoor air handling unit 120 and the outdoor air handling unit 220 to maintain the stability of the temperature and humidity in the indoor environment simulation room 1 and the outdoor environment simulation room 2, and start the indoor and outdoor air exchange unit 3 to assist the indoor air handling unit 120 and the outdoor air handling unit 220 to adjust the temperature and humidity in the indoor environment simulation room 1 and the outdoor environment simulation room 2.

[0055] The method guides the cold air or hot air generated by the indoor unit 110 of the air conditioner to be tested out through the indoor and outdoor air exchange unit 3 and re-introduces the cold air or hot air into the indoor environment simulation chamber 1 and the outdoor environment simulation chamber 2 respectively, and utilizes the cold air or hot air generated by the indoor unit 110 of the air conditioner to be tested to assist the outdoor air handling unit 220 in adjusting the temperature and humidity in the outdoor environment simulation chamber 2, thereby reducing the workload of the outdoor air handling unit 220 and ultimately achieving the effect of saving electricity.

[0056] Specifically, in step 4, the indoor and outdoor air exchange unit 3 assists in adjusting the temperature and humidity in the following manner:

[0057] If the air conditioner is in cooling mode, the cold air generated by the indoor unit 110 is sent out through the air outlet channel 310, and then divided into two parts by the three-way channel 330. One part of the cold air is re-entered into the indoor environment simulation chamber 1 through the first air inlet channel 340, and the other part of the cold air is passed into the outdoor environment simulation chamber through the second air inlet channel 350;

[0058] If the air conditioner is in heating mode, the hot air generated by the indoor unit 110 is sent out through the air outlet channel 310, and then divided into two parts by the three-way channel 330. One part of the hot air is re-entered into the indoor environment simulation chamber 1 through the first air inlet channel 340, and the other part of the hot air is passed into the outdoor environment simulation chamber 2 through the second air inlet channel 350.

[0059] Next, the effects of the present invention are further demonstrated through two embodiments.

[0060] Example 1

[0061] Test the cooling performance of the air conditioner.

[0062] The indoor unit 110 and the outdoor unit 210 of the air conditioner to be tested are installed in the indoor environment simulation room 1 and the outdoor environment simulation room 2 respectively.

[0063] The temperature and humidity sensors are started to obtain the current temperatures of the indoor environment simulation room 1 and the outdoor environment simulation room 2. The temperature of the outdoor environment simulation room 2 is higher than the temperature of the indoor environment simulation room 1.

[0064] After the air conditioner is started, the indoor unit 110 of the air conditioner absorbs heat indoors and emits cold air, and the outdoor unit 210 of the air conditioner dissipates heat outdoors and emits hot air.

[0065] In order to maintain the balance between the indoor environment simulation room 1 and the outdoor environment simulation room 2, it is necessary to start the air handling units on both sides to provide heating and cooling capacity respectively.

[0066] The cold air generated by the indoor unit 110 passes through the indoor air handling unit 120, and is sent back to the indoor environment simulation room 1 after being heated by the heater; the hot air generated by the outdoor unit 210 passes through the outdoor air handling unit 220, and is sent back to the outdoor environment simulation room 2 after being cooled by the cooler. At this time, the overall power consumption is relatively large.

[0067] Subsequently, the indoor and outdoor air exchange unit 3 is started, and the cold air generated by the indoor unit 110 is sent out through the air outlet channel 310, and then divided into two parts by the three-way channel 330. One part of the cold air is re-entered into the indoor environment simulation room through the first air inlet channel 340, and the other part of the cold air is passed into the outdoor environment simulation room 2 through the second air inlet channel 350, so as to cool down the outdoor environment simulation room 2 and reduce the workload of the outdoor air handling unit 220. After testing, the power consumption is reduced from 100kW to 70kW, the energy saving rate is about 30%, and the adjustment stabilization time is shortened from the original 50min to 20min.

[0068] Example 2

[0069] Test the heating performance of the air conditioner.

[0070] The indoor unit 110 and the outdoor unit 210 of the air conditioner to be tested are installed in the indoor environment simulation room 1 and the outdoor environment simulation room 2 respectively.

[0071] The temperature and humidity sensors are started to obtain the current temperatures of the indoor environment simulation chamber 1 and the outdoor environment simulation chamber 2. The temperature of the outdoor environment simulation chamber 2 is lower than the temperature of the indoor environment simulation chamber 1.

[0072] After the air conditioner is started, the indoor unit 110 of the air conditioner releases heat indoors and emits hot air, and the outdoor unit 210 of the air conditioner absorbs heat outdoors and emits cold air.

[0073] In order to maintain the balance between the indoor environment simulation room 1 and the outdoor environment simulation room 2, it is necessary to start the air handling units on both sides to provide cooling capacity and heating capacity.

[0074] The hot air generated by the indoor unit 110 passes through the indoor air handling unit 120, and is sent back to the indoor environment simulation room 1 after being cooled by the cooler; the cold air generated by the outdoor unit 210 passes through the outdoor air handling unit 220, and is sent back to the outdoor environment simulation room 2 after being heated by the heater. At this time, the overall power consumption is relatively large.

[0075] Then, the indoor and outdoor air exchange unit 3 is started, and the hot air generated by the indoor unit 110 is sent out through the air outlet channel 310, and then divided into two parts by the three-way channel 330. One part of the hot air is re-entered into the indoor environment simulation room through the first air inlet channel 340, and the other part of the hot air is passed into the outdoor environment simulation room 2 through the second air inlet channel 350, so as to heat up the outdoor environment simulation room 2 and reduce the workload of the outdoor air handling unit 220.

[0076] Compared with the prior art, the energy-saving enthalpy difference chamber and the energy-saving method provided by the present invention have the following significant improvements:

[0077] First, through the indoor and outdoor air exchange unit, part of the cold air or hot air generated by the indoor unit in the indoor environment simulation room is used to assist in adjusting the temperature and humidity in the outdoor environment simulation room, which can effectively reduce the workload of the original air handling unit, meet the needs of energy conservation and environmental protection, and reduce the testing cost, with good economic benefits;

[0078] Second, the indoor and outdoor air exchange unit is formed by multiple groups of air ducts and nozzle boxes, which has a simple and reliable structure, strong sealing, and does not change the overall structure of the original enthalpy difference chamber, and can be directly modified on the basis of the existing enthalpy difference chamber;

[0079] Third, it has strong applicability. Whether it is testing the cooling and performance or the heating performance of the air conditioner indoor unit, it can achieve the effect of saving electricity.

[0080] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An energy-saving enthalpy difference test room, comprising an indoor environment simulation room (1) and an outdoor environment simulation room (2) arranged adjacent to each other, wherein the indoor environment simulation room (1) is used to place an indoor unit (110) of an air conditioner to be tested; the outdoor environment simulation room (2) is used to place an outdoor unit (210) of the air conditioner to be tested; the indoor environment simulation room (1) and the outdoor environment simulation room (2) are provided with temperature and humidity sensors inside; characterized in that: Also includes: An indoor air handling unit (120), an outdoor air handling unit (220) and an indoor and outdoor air exchange unit (3), wherein the indoor air handling unit (120) is installed in the indoor environment simulation room (1) to adjust the temperature and humidity of the indoor environment simulation room (1); and the outdoor air handling unit (220) is installed in the outdoor environment simulation room (2) to adjust the temperature and humidity of the outdoor environment simulation room (2); The indoor and outdoor air exchange unit (3) is connected to the indoor environment simulation chamber (1) and the outdoor environment simulation chamber (2) and is used to pass the air in the indoor environment simulation chamber (1) into the outdoor environment simulation chamber (2).

2. The energy-saving enthalpy difference test chamber according to claim 1, characterized in that: The indoor and outdoor air exchange unit (3) comprises: an air outlet channel (310), a nozzle box (320), a three-way channel (330), a first air inlet channel (340) and a second air inlet channel (350). The first end of the air outlet channel (310) passes through the side wall of the indoor environment simulation room (1) and is communicated with the air outlet of the indoor unit (110); the air inlet end of the nozzle box (320) is communicated with the second end of the air outlet channel (310); The first port of the three-way channel (330) is connected to the air outlet end of the nozzle box (320); the first end of the first air inlet channel (340) and the first end of the second air inlet channel (350) are respectively connected to the second port and the third port of the three-way channel (330); An indoor air inlet (130) is provided on the top wall of the indoor environment simulation chamber (1); the second end of the first air inlet channel (340) is connected to the indoor air inlet (130); an outdoor air inlet (230) is provided on the top wall of the outdoor environment simulation chamber (2), and the second end of the second air inlet channel (350) is connected to the outdoor air inlet (230).

3. An energy-saving enthalpy difference test chamber according to claim 2, characterized in that: The air outlet channel (310) comprises a plurality of air ducts A (311) connected end to end in sequence, wherein the first air duct A (311) passes through the side wall of the indoor environment simulation chamber (1) and is connected to the air outlet of the indoor unit (110), and the last air duct A (311) is connected to the air inlet end of the nozzle box (320).

4. The energy-saving enthalpy difference test chamber according to claim 3, characterized in that: The three-way channel (330) has a first opening (331), and a second opening (332) and a third opening (333) arranged opposite to and perpendicular to the first opening (331), and the first opening (331) is connected to the air outlet of the nozzle box (320).

5. The energy-saving enthalpy difference test chamber according to claim 4, characterized in that: The first air inlet channel (340) includes a plurality of air ducts B (341) connected end to end in sequence, and the second air inlet channel (350) includes a plurality of air ducts C (351) connected end to end in sequence, The first air duct B (341) of the first air inlet channel (340) is in communication with the second opening (332), and the first air duct C (351) of the second air inlet channel (350) is in communication with the third opening (333); The air duct B (341) at the end of the first air inlet channel (340) is connected to the indoor air inlet (130); and the air duct C (351) at the end of the second air inlet channel (350) is connected to the outdoor air inlet (230).

6. The energy-saving enthalpy difference test chamber according to claim 5, characterized in that: The first end and the second end of the air outlet channel (310), the first air inlet channel (340) and the second air inlet channel (350) are all provided with sealing rings to ensure air tightness.

7. The energy-saving enthalpy difference test chamber according to claim 6, characterized in that: The indoor air handling unit (120) comprises a heater, an evaporator, a humidifier and a fan which are sequentially installed in the indoor environment simulation chamber (1); the outdoor air handling unit (220) comprises a heater, an evaporator, a humidifier and a fan which are sequentially installed in the outdoor environment simulation chamber (2).

8. The energy-saving enthalpy difference test chamber according to claim 7, characterized in that: It also includes a pressure balance valve (4), A through hole is provided on the side wall adjacent to the indoor environment simulation chamber (1) and the outdoor environment simulation chamber (2), and the pressure balance valve (4) communicates with the through hole of the indoor environment simulation chamber (1) and the outdoor environment simulation chamber (2).

9. An enthalpy difference test room energy saving method, characterized in that: The energy-saving enthalpy difference test chamber described in claims 1 to 8 is implemented, comprising the following steps: Step 1: placing the indoor unit (110) and the outdoor unit (210) of the air conditioner to be tested in the indoor environment simulation room (1) and the outdoor environment simulation room (2), respectively; Step 2: respectively detecting the current temperature and humidity of the indoor environment simulation room (1) and the outdoor environment simulation room (2) by using temperature and humidity sensors; Step 3, selecting the cooling performance or heating performance of the air conditioner to be tested and then starting the air conditioner, and using a temperature and humidity sensor to monitor the temperature and humidity changes in the indoor environment simulation room (1) and the outdoor environment simulation room (2); Step 4: Start the indoor air handling unit (120) and the outdoor air handling unit (220) to maintain the stability of the temperature and humidity in the indoor environment simulation room (1) and the outdoor environment simulation room (2), and start the indoor and outdoor air exchange unit (3) to assist the indoor air handling unit (120) and the outdoor air handling unit (220) in adjusting the temperature and humidity in the indoor environment simulation room (1) and the outdoor environment simulation room (2).

10. The energy-saving method for an enthalpy difference test room according to claim 9, characterized in that: The step 4 is specifically as follows: If the air conditioner is in cooling mode, the cold air generated by the indoor unit (110) is divided into two parts through the indoor and outdoor air exchange unit (3), one part of the cold air is introduced into the indoor environment simulation chamber (1) again, and the other part of the cold air is introduced into the outdoor environment simulation chamber (2); If the air conditioner is in heating mode, the hot air generated by the indoor unit (110) is divided into two parts through the indoor and outdoor air exchange unit (3), one part of the hot air is re-introduced into the indoor environment simulation chamber (1), and the other part of the hot air is introduced into the outdoor environment simulation chamber (2).

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