CN216483998U - Heat exchange core testing device and system - Google Patents
Heat exchange core testing device and system Download PDFInfo
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- CN216483998U CN216483998U CN202122050793.6U CN202122050793U CN216483998U CN 216483998 U CN216483998 U CN 216483998U CN 202122050793 U CN202122050793 U CN 202122050793U CN 216483998 U CN216483998 U CN 216483998U
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Abstract
The utility model discloses a heat exchange core body testing device and a system, which belong to the technical field of heat exchange testing and comprise: refrigeration load analog unit, through the heat production environment that refrigeration load analog unit simulation is connected with the heat transfer core inboard, through the heat transfer environment that the environmental simulation unit simulation is connected with the heat transfer core outside, through the heating volume of controlling first heating module, control airflow velocity in the first pipeline and the airflow velocity in the second pipeline, can simulate heat transfer core heat transfer process, provide convenience for detecting the performance of heat transfer core. According to the heat exchange core body testing system, the control module is used for keeping the temperature of the air inlet at a constant level at the inner side of the heat exchange core body, and the performance index of the heat exchange core body is determined according to the temperature of the inner side and the outer side of the heat exchange core body, the gas flow waves and the gas specific heat capacity.
Description
Technical Field
The utility model belongs to the technical field of heat exchange tests, and particularly relates to a heat exchange core body testing device and system.
Background
The fresh air system is a set of independent air processing system consisting of an air supply system and an air exhaust system and is divided into a pipeline type fresh air system and a pipeline-free fresh air system. The pipeline type fresh air system consists of a fresh air fan and pipeline accessories, outdoor air is purified by the fresh air fan and is led into a room, and indoor air is discharged through a pipeline; the ductless fresh air system is composed of a fresh air fan, and the fresh air fan is used for purifying outdoor air and guiding the outdoor air into a room.
Relatively speaking, the pipeline type fresh air system is more suitable for being used in industrial or large-area office areas due to large engineering quantity, and the pipeline-free fresh air system is more suitable for being used in families due to convenient installation.
Most of the pipeline type fresh air systems are provided with a heat exchange device: fresh air heat exchanger. The fresh air heat exchanger adjusts the outdoor air temperature to be close to the indoor air temperature through the pipeline and then sends the air into the room, and high-performance and high-efficiency air exchange can be continuously provided. The fresh air full heat exchanger drives air circulation indoors to form a constant humidity space; outdoor air dust and other pollutants are filtered through the air conditioner, indoor fresh air is supplemented, and the air conditioner can be opened without opening a window for ventilation.
The heat exchange core body is used as the core of the fresh air heat exchanger, the heat exchange performance of the heat exchange core body plays a key role in utilizing a natural cold source, and the heat exchange core body is subjected to full testing to give out the heat exchange performance parameters such as the optimal heat exchange efficiency and the optimal heat exchange time.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a heat exchange core body testing device and system, which aim to solve the problem that the heat exchange performance of a heat exchange core body is inconvenient to test in the prior art.
The first aspect of the embodiment of the present invention provides a heat exchange core testing apparatus, including: a refrigeration load simulation unit and an environment simulation unit;
the refrigeration load simulation unit includes: the heating device comprises a first pipeline, a first fan and a first heating module;
the first fan is used for generating air flow from the first pipeline air inlet to the first pipeline air outlet, and the first heating module is used for heating the air flow flowing through the first pipeline;
the environment simulation unit includes: a second pipeline and a second fan;
the second fan is used for generating air flow from the second pipeline air inlet to the second pipeline air outlet.
In one possible implementation manner, the environment simulation unit further includes: a second heating module for heating a gas stream flowing through the second conduit.
In one possible implementation manner, the refrigeration load simulation unit further includes: a first regulating valve for regulating an effective cross-sectional flow area of the first conduit.
In one possible implementation manner, the environment simulation unit further includes: a second regulating valve for regulating an effective cross-sectional flow area of the second conduit.
In one possible implementation manner, the environment simulation unit further includes: and the third pipeline is used for communicating an air outlet at the outer side of the heat exchange core body with the external atmosphere.
A second aspect of an embodiment of the present invention provides a heat exchange core testing system, including the heat exchange core testing apparatus of the first aspect, the heat exchange core testing system further including: a control unit;
the control unit includes: the wind speed control system comprises a control module, a first temperature sensor, a second temperature sensor, a first wind speed sensor, a third temperature sensor, a fourth temperature sensor and a second wind speed sensor, wherein the first heating module, the first temperature sensor, the second temperature sensor, the wind speed sensor, the third temperature sensor, the fourth temperature sensor and the second wind speed sensor are respectively and electrically connected with the control module;
the first temperature sensor is used for acquiring a temperature signal at one side of the air inlet of the first pipeline, the second temperature sensor is used for acquiring a temperature signal at one side of the air outlet of the first pipeline, and the first air speed sensor is used for acquiring a speed signal of air flow in the first pipeline;
the third temperature sensor is used for collecting temperature signals at one side of the air inlet of the second pipeline, the fourth temperature sensor is used for collecting temperature signals at an air outlet at the outer side of the heat exchange core body, and the second air speed sensor is used for collecting air flow speed signals at an air outlet at the outer side of the heat exchange core body;
the control module is used for controlling the first heating module to enable the air temperature of an air outlet of the first pipeline to be constant; the control module is further configured to determine a heat exchange performance of the heat exchange core according to a temperature signal at a side of the first pipe air inlet, a temperature signal at a side of the first pipe air outlet, a velocity signal of an air flow in the first pipe, a temperature signal at a side of the second pipe air inlet, a temperature signal at an air outlet at an outer side of the heat exchange core, and an air flow velocity signal at an air outlet at an outer side of the heat exchange core, where the heat exchange performance includes: heat exchange rate and heat exchange efficiency.
In one possible implementation, the environment simulation unit includes: a second heating module for heating the gas flow within the second conduit;
the second heating module is electrically connected with the control module;
the control module is also used for controlling the temperature of the air flow of the air inlet at the outer side of the heat exchange core body to be constant through the second heating module.
In a possible implementation manner, the first fan and the second fan are respectively provided with a frequency converter, and the first fan and the second fan are respectively electrically connected with the control module;
the control module is further configured to control the airflow rate generated by the first fan via the inverter of the first fan, and the control module is further configured to control the airflow rate generated by the second fan via the inverter of the second fan.
In one possible implementation manner, the control unit further includes: a first differential pressure sensor electrically connected to the control module;
the first pressure difference sensor is used for collecting the air pressure difference between an air inlet at the inner side of the heat exchange core body and an air outlet at the inner side of the heat exchange core body, and the control module is also used for calculating the resistance loss at the inner side of the heat exchange core body.
In one possible implementation manner, the control unit further includes: a second differential pressure sensor electrically connected to the control module;
the second pressure difference sensor is used for collecting the air pressure difference between an air inlet on the outer side of the heat exchange core body and an air outlet on the outer side of the heat exchange core body, and the control module is also used for calculating the resistance loss on the outer side of the heat exchange core body.
Compared with the prior art, the implementation mode of the utility model has the following beneficial effects:
the embodiment of the heat exchange core body testing device comprises a refrigeration load simulation unit, wherein a heat production environment connected with the inner side of the heat exchange core body is simulated through the refrigeration load simulation unit, a heat exchange environment connected with the outer side of the heat exchange core body is simulated through the environment simulation unit, and the heat exchange process of the heat exchange core body can be simulated by controlling the heating quantity of the first heating module, controlling the airflow speed in the first pipeline and the airflow speed in the second pipeline, so that convenience is provided for detecting the performance of the heat exchange core body.
The second heating module is used for heating air flow in the second pipeline, and the temperature of the air flow at the air outlet of the second pipeline is maintained to be a constant level through a control means, so that multiple different heat exchange core bodies are tested under the same test condition, and the difference of heat exchange performance of the heat exchange core bodies with different designs can be transversely compared.
The embodiment of the utility model realizes the purpose of controlling the effective flow cross section area of the pipeline through the first regulating valve and the second regulating valve. The gas flow inside and outside the heat exchange core body can be adjusted by adjusting the sectional area of the pipeline, so that the purpose of detecting the performance of the heat exchange body under different gas flow conditions is achieved.
According to the heat exchange core body testing system, the control module is used for keeping the temperature of the air inlet at a constant level at the inner side of the heat exchange core body, and the performance index of the heat exchange core body is determined according to the temperature of the inner side and the outer side of the heat exchange core body, the gas flow waves and the gas specific heat capacity.
In the aspect of controlling the airflow speed, the embodiment of the utility model has the advantages that the airflow is controlled by controlling the rotating speeds of the first fan and the second fan, so that the energy is saved compared with the manner of controlling the airflow by using the valve, and only when the rotating speed of the fan cannot effectively and stably control the airflow speed, the valve is used for controlling, so that the purposes of saving energy and reducing consumption by controlling the airflow speed by adjusting the speed of the fan and expanding the airflow speed adjusting range by controlling the valve are realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic diagram of a heat exchange core testing device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a refrigeration load simulation unit of the heat exchange core testing device according to the embodiment of the present invention;
FIG. 3 is a schematic diagram of an environmental simulation unit of a heat exchange core testing device provided by an embodiment of the utility model;
fig. 4 is a functional block diagram of a heat exchange core testing system according to an embodiment of the present invention.
In the figure:
100 a refrigeration load simulation unit;
101 a first conduit;
102 a first fan;
103 a first heating module;
104 a first regulating valve;
200 an environment simulation unit;
201 a second conduit;
202 a second fan;
203 a second heating module;
204 a second regulating valve;
205 a third conduit;
301 a control module;
302 a first temperature sensor;
303 a second temperature sensor;
304 a first wind speed sensor;
305 a third temperature sensor;
306 a fourth temperature sensor;
307 a second wind speed sensor;
308 a first differential pressure sensor;
309 a second differential pressure sensor;
400 heat exchange core.
Detailed Description
In order to make the technical solution better understood by those skilled in the art, the technical solution in the embodiment of the present invention will be clearly described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is an embodiment of a part of the present invention, and not an entire embodiment. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present disclosure without any creative effort shall fall within the protection scope of the present disclosure.
The terms "include" and any other variations in the description and claims of this document and the above-described figures, mean "include but not limited to", and are intended to cover non-exclusive inclusions and not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc. are used to distinguish between different objects and are not used to describe a particular order.
The following detailed description of implementations of the utility model refers to the accompanying drawings in which:
fig. 1 shows an application scenario schematic diagram of a heat exchange core testing system provided in an embodiment of the present application. Referring to fig. 1, the application scenario may include a refrigeration load simulation unit 100, an environment simulation unit 200 control unit (not shown in fig. 1), and a heat exchange core 400. The refrigeration load simulation unit 100 and the environment simulation unit 200 constitute a heat exchange core testing device according to an embodiment of the present application.
A fluid with heat, such as air with heat, flows through the inside of heat exchange core 400, and the fluid inside heat exchange core 400 exchanges heat with the fluid outside heat exchange core 400 to cool the fluid flowing through heat exchange core 400. An air inlet and an air outlet are formed in the inner side of the heat exchange core body 400.
Fluid used for cooling the inner side of the heat exchange core body, such as refrigerated air, flows through the outer side of the heat exchange core body 400, and the fluid outside the heat exchange core body 400 participates in heat exchange with the inner side of the heat exchange core body 400 and finally becomes fluid with heat. The outside of heat exchange core 400 is equipped with air inlet and gas outlet.
The refrigeration load simulation unit 100 is used for simulating a heat generating environment, and generates gas with heat to be sent to the inner side of the heat exchange core 400. The environment simulation unit 200 is used to simulate the cooled gas and cool the gas inside the heat exchange core 400.
The heat exchange core testing device is described below with reference to fig. 2 and 3.
The heat exchange core testing device comprises a refrigeration load simulation unit 100 and an environment simulation unit 200. The refrigeration load simulation unit 100 includes: a first pipe 101, a first fan 102, and a first heating module 103. The first fan 102 is used for generating air flow from the air inlet of the first pipeline 101 to the air outlet of the first pipeline 101, and the first heating module 103 is used for heating the air flow of the first pipeline 101.
The environment simulation unit 200 includes: a second duct 201 and a second fan 202. The second fan 202 is used to generate an air flow from the air inlet of the second duct 201 to the air outlet of the second duct 201.
For example, as shown in fig. 2, the first heating module 103 is disposed at a side close to the air inlet inside the heat exchange core 400, and sends the heated air flow to the inside of the heat exchange core 400 for heat exchange. The first fan 102 is used for driving the air in the first pipeline 101 to form an air flow.
As shown in fig. 1, the air inlet inside heat exchange core 400 communicates with the air outlet of first tube 101, and the air outlet inside heat exchange core 400 communicates with the air inlet of first tube 101. The airflow in the first duct 101 flows from the air inlet of the first duct 101 to the air outlet of the first duct 101. The air flow in first tube 101 flows from the air inlet of heat exchange core 400 to the air outlet of heat exchange core 400. The air flow is heat-exchanged and cooled inside the heat exchange core 400.
As shown in fig. 3, the second fan 202 is configured to drive the air in the second pipe 201 to form an airflow, and send the airflow to the outside of the heat exchange core 400 for heat exchange.
As shown in fig. 1, the air inlet of the second duct 201 communicates with the atmosphere. The atmosphere flows from the air inlet of the second pipe 201 to the air inlet on the outer side of the heat exchange core body 400, and is discharged from the air outlet on the outer side of the heat exchange core body 400. The air flow exchanges heat outside the heat exchange core 400, and takes away heat outside the heat exchange core 400.
The embodiment of the utility model comprises a refrigeration load simulation unit 100, wherein a heat production environment connected with the inner side of a heat exchange core 400 is simulated through the refrigeration load simulation unit 100, a heat exchange environment connected with the outer side of the heat exchange core 400 is simulated through an environment simulation unit 200, and a heat exchange process of the heat exchange core 400 can be simulated by controlling the heating quantity of a first heating module 103, the airflow speed in a first pipeline 101 and the airflow speed in a second pipeline 201, so that convenience is provided for detecting the performance of the heat exchange core 400.
In a possible implementation manner, the environment simulation unit 200 further includes: a second heating module 203, the second heating module 203 being for heating the air flow in the second conduit 201.
Illustratively, the second heating module 203 is used for heating the air flow in the second pipe 201, and the temperature of the air flow at the air outlet of the second pipe 201 is maintained to a constant level by the control means, so that a plurality of different heat exchange cores 400 are tested under the same test conditions, thereby being capable of comparing the difference of heat exchange performance of the heat exchange cores 400 with different designs.
In a possible implementation manner, the refrigeration load simulation unit 100 further includes: a first regulating valve 104, the first regulating valve 104 being for regulating an effective flow cross-sectional area of the first pipe 101.
In a possible implementation manner, the environment simulation unit 200 further includes: a second regulating valve 204, the second regulating valve 204 being adapted to regulate the effective cross-sectional flow area of the second conduit 201.
Illustratively, one embodiment of the first and second regulator valves 104, 204 is a butterfly valve, and the angle between the butterfly valve and the pipe is adjusted to control the effective flow cross-sectional area of the pipe.
The gas flow inside and outside the heat exchange core 400 can be adjusted by adjusting the sectional area of the pipeline, so that the purpose of detecting the performance of the heat exchanger under different gas flow conditions is achieved.
In one possible implementation, the environment simulation unit 200 further includes: and the third pipe 205 is used for communicating the air outlet on the outer side of the heat exchange core 400 with the external atmosphere, and the third pipe 205 is used for communicating the air outlet with the external atmosphere.
Illustratively, the outer side of the heat exchange core 400 is communicated with the external atmosphere through a third pipeline 205, and an air pressure sensor is installed in the third pipeline 205, so as to achieve the purpose of detecting the resistance loss of the outer side of the heat exchange core 400.
A second aspect of an embodiment of the present invention provides a heat exchange core testing system, including the heat exchange core testing apparatus of the first aspect, the heat exchange core testing system further including: heat transfer core testing arrangement still includes: a control unit.
The control unit may include: a control module 301, a first temperature sensor 302, a second temperature sensor 303, a first wind speed sensor 304, a third temperature sensor 305, a fourth temperature sensor 306 and a second wind speed sensor 307. The first heating module 103, the first temperature sensor 302, the second temperature sensor 303, the wind speed sensor, the third temperature sensor 305, the fourth temperature sensor 306, and the second wind speed sensor 307 are electrically connected to the control module 301, respectively.
The first temperature sensor 302 is used for acquiring a temperature signal at the air inlet side of the first pipeline 101, the second temperature sensor 303 is used for acquiring a temperature signal at the air outlet side of the first pipeline 101, and the first air speed sensor 304 is used for acquiring a speed signal of air flow in the first pipeline 101.
The third temperature sensor 305 is used for acquiring a temperature signal at one side of the air inlet of the second pipeline 201, the fourth temperature sensor 306 is used for acquiring a temperature signal at an air outlet outside the heat exchange core 400, and the second air speed sensor 307 is used for acquiring an air flow speed signal at an air outlet outside the heat exchange core 400.
The control module 301 is used for controlling the first heating module 103 to make the air temperature at the air outlet of the first pipeline 101 constant; the control module 301 is further configured to determine a heat exchange performance of the heat exchange core 400 according to a temperature signal at a side of an air inlet of the first pipe 101, a temperature signal at a side of an air outlet of the first pipe 101, a speed signal of an air flow in the first pipe 101, a temperature signal at a side of an air inlet of the second pipe 201, a temperature signal at an air outlet outside the heat exchange core 400, and an air flow speed signal at an air outlet outside the heat exchange core 400, where the heat exchange performance includes: heat exchange rate and heat exchange efficiency.
Illustratively, the control module 301 may be implemented in various manners, such as an industrial personal computer, a PLC, or a control board with a single chip microcomputer as a core, and one possible implementation manner is a PLC, such as S7-200 manufactured by siemens corporation.
As shown in fig. 4, the control module 301 is configured to control the first heating module 103 to stabilize the temperature of the air inlet entering the inside of the heat exchange core 400 at a constant value.
The control module 301 can obtain the total heat exchanged in unit time by the temperature, the gas flow rate and the specific heat capacity of the gas entering and exiting the gas port through the first pipeline 101.
Similarly, for the second pipe 201, the total heat exchange amount per unit time in the second pipe 201 can be obtained through the temperature of the gas inlet and the gas outlet of the second pipe 201, the gas flow rate and the specific heat capacity of the gas.
When the total heat exchange amount is close to the two heat exchange amounts from the heat exchange starting stage and the temperature reaches the balance, the heat exchange is considered to be balanced, the time consumed in the process and the total heat exchange amount are calculated, and the performance of the heat exchanger can be obtained.
In the heat exchange core body test system of the embodiment of the utility model, the control module 301 is used for keeping the temperature of the air inlet at the inner side of the heat exchange core body 400 at a constant level, and determining the performance index of the heat exchange core body 400 according to the temperature, the gas flow wave and the gas specific heat capacity at the inner side and the outer side of the heat exchange core body 400.
In one possible implementation, the environment simulation unit 200 includes: a second heating module 203, the second heating module 203 being for heating the air flow in the second pipe 201;
the second heating module 203 is electrically connected with the control module 301;
the control module 301 is further used for controlling the air flow at the air inlet on the outer side of the heat exchange core 400 to be constant in temperature through the second heating module 203.
Illustratively, the control module 301 is further configured to control the second heating module 203 to heat the air in the second conduit 201, so that the temperature of the air flow at the air outlet of the second conduit 201 is maintained at a constant level, so that a plurality of different heat exchange cores 400 are tested under the same test conditions, thereby being capable of comparing the difference of heat exchange performance of the heat exchange cores 400 with different designs.
In a possible implementation manner, the first fan 102 and the second fan 202 are respectively provided with a frequency converter, and the first fan 102 and the second fan 202 are respectively electrically connected with the control module 301;
the control module 301 is further configured to control the airflow rate generated by the first fan 102 via the frequency converter of the first fan 102, and the control module 301 is further configured to control the airflow rate generated by the second fan 202 via the frequency converter of the second fan 202.
For example, in terms of controlling the airflow, the airflow is controlled by controlling the rotation speeds of the first fan 102 and the second fan 202 to be more energy-saving than the airflow controlled by using a valve, and only when the rotation speeds of the fans cannot effectively and stably control the airflow speed, the airflow is controlled by using the valve, so that the purposes of saving energy and reducing consumption when the speed of the fans is adjusted to control the airflow speed and expanding the airflow speed adjusting range are achieved.
In one possible implementation, the control unit further includes: a first differential pressure sensor 308, the first differential pressure sensor 308 being electrically connected to the control module 301;
the first differential pressure sensor 308 is configured to collect a pressure difference between an air inlet on the inner side of the heat exchange core 400 and an air outlet on the inner side of the heat exchange core 400, and the control module 301 is further configured to calculate a resistance loss on the inner side of the heat exchange core 400.
In one possible implementation, the control unit further includes: a second differential pressure sensor 309, the second differential pressure sensor 309 electrically connected to the control module 301;
the second differential pressure sensor 309 is configured to collect a pressure difference between an air inlet on the outer side of the heat exchange core 400 and an air outlet on the outer side of the heat exchange core 400, and the control module 301 is further configured to calculate a resistance loss on the outer side of the heat exchange core 400.
Illustratively, the resistance losses inside and outside heat exchange core 400 can be obtained through the differential pressure sensor and the second differential pressure sensor 309, and reliable data is provided for adjusting the design of heat exchange core 400.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A heat exchange core testing device is characterized by comprising: a refrigeration load simulation unit (100) and an environment simulation unit (200);
the refrigeration load simulation unit (100) includes: a first pipe (101), a first fan (102) and a first heating module (103);
the first fan (102) is used for generating air flow from the air inlet of the first pipeline (101) to the air outlet of the first pipeline (101), and the first heating module (103) is used for heating the air flow flowing through the first pipeline (101);
the environment simulation unit (200) comprises: a second duct (201) and a second fan (202);
the second fan (202) is used for generating air flow from the air inlet of the second pipeline (201) to the air outlet of the second pipeline (201).
2. The heat exchange core testing apparatus according to claim 1, wherein the environmental simulation unit (200) further comprises: a second heating module (203), the second heating module (203) for heating a gas flow flowing through the second conduit (201).
3. The heat exchange core testing apparatus of claim 1, wherein the refrigeration load simulating unit (100) further comprises: a first regulating valve (104), the first regulating valve (104) being adapted to regulate the effective cross-sectional flow area of the first conduit (101).
4. The heat exchange core testing apparatus according to claim 1, wherein the environmental simulation unit (200) further comprises: a second regulating valve (204), the second regulating valve (204) being adapted to regulate the effective cross-sectional flow area of the second conduit (201).
5. The thermal exchange core testing apparatus according to any one of claims 1 to 4, wherein the environmental simulation unit (200) further comprises: and a third pipeline (205), wherein the third pipeline (205) is used for communicating the air outlet outside the heat exchange core with the external atmosphere.
6. A heat exchange core test system, comprising: the thermal core testing apparatus of any of claims 1-5, the thermal core testing system further comprising: a control unit;
the control unit includes: a control module (301), a first temperature sensor (302), a second temperature sensor (303), a first wind speed sensor (304), a third temperature sensor (305), a fourth temperature sensor (306), and a second wind speed sensor (307), wherein the first heating module (103), the first temperature sensor (302), the second temperature sensor (303), the wind speed sensor, the third temperature sensor (305), the fourth temperature sensor (306), and the second wind speed sensor (307) are electrically connected to the control module (301), respectively;
the first temperature sensor (302) is used for acquiring a temperature signal at the air inlet side of the first pipeline (101), the second temperature sensor (303) is used for acquiring a temperature signal at the air outlet side of the first pipeline (101), and the first wind speed sensor (304) is used for acquiring a speed signal of airflow in the first pipeline (101);
the third temperature sensor (305) is used for acquiring a temperature signal at the air inlet side of the second pipeline (201), the fourth temperature sensor (306) is used for acquiring a temperature signal at the air outlet outside the heat exchange core (400), and the second air speed sensor (307) is used for acquiring an air flow speed signal at the air outlet outside the heat exchange core (400);
the control module (301) is used for controlling the first heating module (103) to enable the air temperature of an air outlet of the first pipeline (101) to be constant; the control module (301) is further configured to determine a heat exchange performance of the heat exchange core (400) according to a temperature signal at an air inlet side of the first pipe (101), a temperature signal at an air outlet side of the first pipe (101), a speed signal of an air flow in the first pipe (101), a temperature signal at an air inlet side of the second pipe (201), a temperature signal at an air outlet outside the heat exchange core (400), and an air flow speed signal at an air outlet outside the heat exchange core (400), wherein the heat exchange performance includes: heat exchange rate and heat exchange efficiency.
7. The heat exchange core testing system of claim 6, wherein the environmental simulation unit (200) comprises: a second heating module (203), the second heating module (203) for heating the gas flow within the second conduit (201);
the second heating module (203) is electrically connected with the control module (301);
the control module (301) is also used for controlling the temperature of the air flow at the air inlet on the outer side of the heat exchange core body (400) to be constant through the second heating module (203).
8. The heat exchange core testing system according to claim 6, wherein the first fan (102) and the second fan (202) are respectively provided with a frequency converter, and the first fan (102) and the second fan (202) are respectively electrically connected with the control module (301);
the control module (301) is further configured to control the air flow rate generated by the first fan (102) via an inverter of the first fan (102), the control module (301) is further configured to control the air flow rate generated by the second fan (202) via an inverter of the second fan (202).
9. The heat exchange core testing system of claim 6, wherein the control unit further comprises: a first differential pressure sensor (308), the first differential pressure sensor (308) electrically connected with the control module (301);
the first pressure difference sensor (308) is used for collecting the air pressure difference between an air inlet at the inner side of the heat exchange core body (400) and an air outlet at the inner side of the heat exchange core body (400), and the control module (301) is also used for calculating the resistance loss at the inner side of the heat exchange core body (400).
10. The heat exchange core testing system of claim 6, wherein the control unit further comprises: a second differential pressure sensor (309), the second differential pressure sensor (309) electrically connected with the control module (301);
the second pressure difference sensor (309) is used for collecting the air pressure difference between an air inlet at the outer side of the heat exchange core body (400) and an air outlet at the outer side of the heat exchange core body (400), and the control module (301) is also used for calculating the resistance loss at the outer side of the heat exchange core body (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122050793.6U CN216483998U (en) | 2021-08-27 | 2021-08-27 | Heat exchange core testing device and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122050793.6U CN216483998U (en) | 2021-08-27 | 2021-08-27 | Heat exchange core testing device and system |
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| Publication Number | Publication Date |
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| CN216483998U true CN216483998U (en) | 2022-05-10 |
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| CN202122050793.6U Active CN216483998U (en) | 2021-08-27 | 2021-08-27 | Heat exchange core testing device and system |
Country Status (1)
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| CN (1) | CN216483998U (en) |
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2021
- 2021-08-27 CN CN202122050793.6U patent/CN216483998U/en active Active
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