CN112763250A - Performance test system and test method for air-cooled evaporation composite type transverse flow closed cooling tower - Google Patents
Performance test system and test method for air-cooled evaporation composite type transverse flow closed cooling tower Download PDFInfo
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Abstract
The invention discloses a performance test system and a test method for an air-cooled evaporation composite transverse flow closed cooling tower, belongs to the technical field of cooling water circulation, and has the advantages of novel system structure, clear use principle and diversified experimental working conditions.
Description
Technical Field
The invention belongs to the technical field of cooling water circulation, relates to a cooling tower performance test system and a test method, and particularly relates to an air-cooling evaporation composite type transverse flow closed cooling tower performance test system and a test method.
Background
The cooling tower is used as an important heat dissipation device for reducing the temperature of cooling water, and is widely applied to civil air conditioners and industrial fields of metallurgy, chemical industry, electric power, textile and the like. As a novel cooling heat exchange device proposed in recent years, the air-cooled evaporation composite type transverse flow closed cooling tower adopts a dual cooling mode of air cooling and evaporation heat absorption, is in closed circulation, has the advantages of high cooling heat exchange efficiency, reduction of cooling water consumption, no pollution of water quality, flexible working condition adjustment and the like, and is a high-efficiency energy-saving water-saving cooling heat exchange device.
The air-cooled evaporation composite type transverse flow closed cooling tower adopts dry coil and wet coil technologies, combines the air-cooled technology with the evaporative cooling technology, and can be combined in different cooling modes according to outdoor environmental conditions under the operating condition. Thus, the cooling performance of the hybrid tower is not only affected by outdoor weather conditions, but is also related to operational parameters and structural characteristics. In order to better design and optimize the structure and the operation condition of the composite tower, the law of the influence of the operation parameters, the operation condition and the structural characteristics on the cooling performance of the composite tower must be clarified. However, the existing composite tower placed outdoors to actually operate cannot realize the function because the composite tower is influenced by the outdoor environment, the air inlet parameters are difficult to control, and the structural characteristics cannot be changed. Therefore, it is necessary to establish a set of test system and a test method which can be placed indoors to realize the influence of different operation parameters, different operation conditions and structural characteristics on the performance of the air-cooling evaporation composite type transverse flow closed cooling tower.
Disclosure of Invention
The invention aims to provide a performance test system and a test method of an air-cooling evaporation composite type transverse flow closed cooling tower aiming at the problem that the existing actually-operated composite type tower can not realize the experiment that the operation parameters and the structural characteristics influence the performance of the existing actually-operated composite type tower, solves the difficulty of measuring the variable working condition and the variable structure operation performance of the actual air-cooling evaporation composite type tower, can realize the experiment that different operation parameters and structural characteristics influence the composite type performance by controlling air inlet parameters, adjusting the air supply quantity and the air supply outlet position, adjusting the water inlet area, adjusting the spray water quantity and replacing the relative positions of a light pipe heat exchanger, a filler and a finned tube heat exchanger, and realizes the simulation experiment of a set of test system with multiple working conditions, multiple parameters and multiple structures.
The technical scheme of the invention is as follows: the utility model provides a compound crossing current closed cooling tower capability test system of forced air cooling evaporation which characterized in that: the test system consists of a tower body, a water baffle, an air inlet partition plate, a finned tube heat exchanger, filler, a light tube heat exchanger, a fan, a data acquisition system, an air speed measuring instrument, a temperature and humidity controller, an air outlet pipe, an air inlet pipe, a spray water system and a constant temperature inlet simulation system;
the spray water system is formed by connecting a spray calandria, a water collecting tank, a first circulating water pump, a first flowmeter and a sixth valve through pipelines; the constant-temperature inlet simulation system is formed by connecting a constant-temperature water bath, a second circulating water pump, a second flowmeter and a circulating pipeline; the water baffle and the air inlet partition plate are arranged in the inner cavity of the tower body from left to right, and the inner cavity of the tower body is divided into a left cavity, a middle cavity and a right cavity; the top of the left cavity is provided with a fan, and an air outlet pipe is connected to the fan; the middle chamber is provided with a finned tube heat exchanger, a spraying exhaust pipe, a filler, a light pipe heat exchanger and a water collecting tank from top to bottom; the air inlet partition plate is provided with a first air inlet, a second air inlet and a third air inlet from top to bottom; the top of the right chamber is connected with an air inlet pipe; the bottom of the right chamber is provided with a water receiving tray; the bottom of the water pan is connected with a water drain valve; the outlet of the constant temperature water bath is divided into two paths, one path is connected with the inlet of the finned tube heat exchanger through a first valve, and the other path is connected with the inlet of the light tube heat exchanger through a second valve; the inlet of the constant-temperature water bath is formed by gathering two paths, one path of the constant-temperature water bath is formed by connecting the outlet of the finned tube heat exchanger with the inlet of the constant-temperature water bath through a third valve, the other path of the constant-temperature water bath is formed by connecting the outlet of the bare tube heat exchanger with the inlet of the constant-temperature water bath through a fifth valve, and the outlet of the finned tube heat exchanger is connected with the inlet of the bare tube heat exchanger through a fourth.
The data acquisition system is connected with a temperature sensor and a humidity sensor through a signal transmission line; the temperature sensors are arranged at the inlet and the outlet of the finned tube heat exchanger and the light tube heat exchanger, the inlet of the spray calandria, the filler, the outer wall surface of the light tube heat exchanger, the first air inlet, the second air inlet and the third air inlet and are used for measuring the water temperature or the air temperature at each part; the humidity sensors are arranged at the first air inlet, the second air inlet and the third air inlet and used for measuring the relative humidity of inlet air.
The finned tube heat exchanger, the filler and the light tube heat exchanger are movably arranged, and the positions of the finned tube heat exchanger, the filler and the light tube heat exchanger can be changed mutually according to requirements so as to test the influence of the relative positions of the finned tube heat exchanger, the filler and the light tube heat exchanger on the performance of the composite tower.
A performance test method for an air-cooled evaporation composite type transverse flow closed cooling tower is characterized by comprising the following steps:
(1) air side: outdoor air enters a right cavity in the tower through an air inlet pipe under the suction action of a fan, enters a middle cavity through a first air inlet, a second air inlet and a third air inlet in an air inlet partition plate after being subjected to static pressure adjustment, enters a left cavity after being subjected to heat and moisture exchange with a finned tube heat exchanger, spray water, a packed tower and a light tube heat exchanger and then is subjected to water retaining by a water retaining plate, and is exhausted to the outside through an air outlet pipe by the fan, so that air circulation is completed; the air inlet parameters are regulated and controlled through a temperature and humidity controller, the adjustment of air inlet positions and different air inlet air quantities is realized by controlling the opening and closing of a first air inlet, a second air inlet and a third air inlet, the air flow adjustment is completed by changing the rotating speed through the frequency conversion of a fan, and the circulating air quantity of the cooling tower is measured through a wind speed measuring instrument, so that the experiment of the influence of the circulating air quantity, the air inlet parameters, the air inlet positions and different air inlet flows on the cooling performance of the cooling tower can be realized;
(2) circulating water side: water in the constant-temperature water bath enters the middle cavity through the circulating pipeline under the action of the second circulating pump, and is regulated through the valve according to the following experimental conditions:
(2-1) air cooling experimental working conditions of the individual finned tubes: the first valve and the third valve are opened, the second valve, the fourth valve and the fifth valve are closed, water in the constant-temperature water bath enters the finned tube heat exchanger through the first valve, is cooled by air outside the tube and then returns to the constant-temperature water bath through the third valve, so that cooling water circulation is completed, and the spray water system is stopped under the experimental working condition;
(2-2) working conditions of single light pipe evaporative cooling experiment: the second valve and the fifth valve are opened, the first valve and the fourth valve are closed, water in the constant-temperature water bath enters the light pipe heat exchanger through the second valve, is cooled by the outside air and spray water in an evaporative mode and then returns to the constant-temperature water bath through the fifth valve, so that cooling water circulation is completed, the spray water system is opened under the experimental working condition, and the experiment of the influence of the spray water quantity on the performance is realized by adjusting the spray water quantity;
(2-3) finned tube air cooling + light pipe evaporation cooling series experiment working conditions: the first valve, the fourth valve and the fifth valve are opened, the second valve and the third valve are closed, water in the constant-temperature water bath enters the finned tube heat exchanger through the first valve and is cooled by air outside the tube, the water enters the light tube heat exchanger through the fourth valve and is cooled by air outside the tube and spray water in an evaporative mode and then returns to the constant-temperature water bath through the fifth valve, so that cooling water circulation is completed, the spray water system is opened under the experimental condition, and the experiment of the influence of the spray water quantity on the performance is realized by adjusting the spray water quantity;
(2-4) finned tube air cooling + light pipe evaporation cooling parallel experimental working conditions: the first valve, the second valve, the third valve and the fifth valve are opened, the fourth valve is closed, water in the constant-temperature water bath enters the finned tube heat exchanger and the light tube heat exchanger through the first valve and the fourth valve respectively, and returns to the constant-temperature water bath after being cooled by air outside the tube and subjected to evaporative cooling by spray water, so that cooling water circulation is completed, the spray water system is opened under the experimental condition, and the experiment of the influence of the spray water amount on the performance is realized by adjusting the spray water amount.
The invention has the beneficial effects that: the invention provides a performance test system and a test method for an air-cooling evaporation composite transverse flow closed cooling tower, which have the advantages of novel system structure, clear use principle and diversified experimental working conditions, solves the difficulty in measuring the variable working conditions and the variable structure running performance of the actual air-cooling evaporation composite tower, can realize the test of the influence of different running parameters and structural characteristics on the composite performance by controlling air inlet parameters, adjusting the air supply quantity and the position of an air supply outlet, adjusting a water inlet area, adjusting the spraying water quantity and replacing the relative positions of a light pipe heat exchanger, a filler and a finned tube heat exchanger, and realizes the multi-working condition, multi-parameter and multi-structure simulation test of a set of test system.
Drawings
FIG. 1 is a schematic diagram of the testing system of the present invention.
In the figure: the device comprises a tower body 1, a left chamber 1-1, a middle chamber 1-2, a right chamber 1-3, a water baffle 2, an air inlet partition plate 3, a first air inlet 3-1, a second air inlet 3-2, a third air inlet 3-3, a finned tube heat exchanger 4, a spray calandria 5, a filler 6, a light tube heat exchanger 7, a water collecting tank 8, a water receiving disc 9, a constant temperature water bath 10, a first circulating water pump 11-1, a second circulating water pump 11-2, a first flowmeter 12-1, a second flowmeter 12-2, a first valve 13-1, a second valve 13-2, a third valve 13-3, a fourth valve 13-4, a fifth valve 13-5, a sixth valve 13-6, a fan 14, a data acquisition system 15, an air speed measuring instrument 16, a temperature and humidity controller 17, an air outlet pipe 18, an air inlet pipe 19, A drain valve 20.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, the performance test system for the air-cooled evaporation composite type transverse flow closed cooling tower comprises a tower body 1, a water baffle 2, an air inlet partition plate 3, a finned tube heat exchanger 4, a filler 6, a light tube heat exchanger 7, a fan 14, a data acquisition system 15, an air speed measuring instrument 16, a temperature and humidity controller 17, an air outlet pipe 18, an air inlet pipe 19, a spray water system and a constant temperature inlet simulation system.
As shown in fig. 1, a performance test system for an air-cooled evaporation composite cross-flow closed cooling tower is characterized in that a spray water system is formed by connecting a spray calandria 5, a water collecting tank 8, a first circulating water pump 11-1, a first flowmeter 12-1 and a sixth valve 13-6 through pipelines; the constant-temperature inlet simulation system is formed by connecting a constant-temperature water bath 10, a second circulating water pump 11-2, a second flowmeter 12-2 and a circulating pipeline; the water baffle 2 and the air inlet partition plate 3 are arranged in the inner cavity of the tower body 1 from left to right, and the inner cavity of the tower body 1 is divided into a left cavity 1-1, a middle cavity 1-2 and a right cavity 1-3; the top of the left chamber 1-1 is provided with a fan 14, and an air outlet pipe 18 is connected with the fan 14; the middle chamber 1-2 is provided with a finned tube heat exchanger 4, a spraying calandria 5, a filler 6, a light pipe heat exchanger 7 and a water collection tank 8 from top to bottom; the air inlet partition plate 3 is provided with a first air inlet 3-1, a second air inlet 3-2 and a third air inlet 3-3 from top to bottom; the top of the right chamber 1-3 is connected with an air inlet pipe 19; the bottom of the right chamber 1-3 is provided with a water pan 9; the bottom of the water pan 9 is connected with a drain valve 20; the outlet of the constant temperature water bath 10 is divided into two paths, one path is connected with the inlet of the finned tube heat exchanger 4 through a first valve 13-1, and the other path is connected with the inlet of the light tube heat exchanger 7 through a second valve 13-2; the inlet of the constant-temperature water bath 10 is formed by gathering two paths, one path is formed by connecting the outlet of the finned tube heat exchanger 4 with the inlet of the constant-temperature water bath 10 through a third valve 13-3, the other path is formed by connecting the outlet of the light tube heat exchanger 7 with the inlet of the constant-temperature water bath 10 through a fifth valve 13-5, and the outlet of the finned tube heat exchanger 4 is connected with the inlet of the light tube heat exchanger 7 through a fourth valve 13-4.
As shown in fig. 1, in a performance testing system of an air-cooled evaporation composite type transverse flow closed cooling tower, a data acquisition system 15 is connected with a temperature sensor and a humidity sensor through signal transmission lines; the temperature sensor is arranged at the inlet and outlet of the finned tube heat exchanger 4 and the light tube heat exchanger 7, the inlet of the spray calandria 5, the filler 6, the outer wall surface of the light tube heat exchanger 7, the first air inlet 3-1, the second air inlet 3-2 and the third air inlet 3-3 and is used for measuring the water temperature or the air temperature at each part; the humidity sensors are arranged at the first air inlet 3-1, the second air inlet 3-2 and the third air inlet 3-3 and are used for measuring the relative humidity of inlet air; the finned tube heat exchanger 4, the filler 6 and the light pipe heat exchanger 7 are movably arranged, and the positions can be mutually exchanged according to requirements so as to test the influence of the relative positions of the finned tube heat exchanger, the filler and the light pipe heat exchanger on the performance of the composite tower.
As shown in fig. 1, a method for testing the performance of an air-cooled evaporation composite transverse flow closed cooling tower is as follows:
(1) air side: outdoor air enters a right chamber 1-3 in the tower through an air inlet pipe 19 under the suction action of a fan 14, enters a middle chamber 1-2 through a first air inlet 3-1, a second air inlet 3-2 and a third air inlet 3-3 in an air inlet partition plate 3 after being subjected to static pressure adjustment, enters a left chamber 1-1 after being subjected to heat and moisture exchange with a finned tube heat exchanger 4, spray water, a packed tower 6 and a light tube heat exchanger 7 and is subjected to water retaining by a water retaining plate 2, and is discharged to the outdoor through an air outlet pipe 18 by the fan 4, so that air circulation is completed; the air inlet parameters are regulated and controlled by a temperature and humidity controller 17, the adjustment of air inlet positions and different air inlet air quantities is realized by controlling the opening and closing of a first air inlet 3-1, a second air inlet 3-2 and a third air inlet 3-3, the adjustment of air flow is completed by changing the rotating speed through the frequency conversion of a fan 14, and the circulating air quantity of the cooling tower is measured by an air speed measuring instrument 16, so that the experiment of the influence of the circulating air quantity, the air inlet parameters, the air inlet positions and different air inlet flows on the cooling performance of the cooling tower can be realized;
(2) circulating water side: the water in the constant-temperature water bath 10 enters the middle chamber 1-2 through the circulating pipeline under the action of the second circulating pump 11-2, and is regulated through the valve according to the following experimental working conditions:
(2-1) air cooling experimental working conditions of the individual finned tubes: the first valve 13-1 and the third valve 13-3 are opened, the second valve 13-2, the fourth valve 13-4 and the fifth valve 13-5 are closed, water in the constant-temperature water bath enters the finned tube heat exchanger 4 through the first valve 13-1, is cooled by air outside the tube and then returns to the constant-temperature water bath 10 through the third valve 13-3, so that cooling water circulation is completed, and the spray water system is stopped under the experimental working condition;
(2-2) working conditions of single light pipe evaporative cooling experiment: the second valve 13-2 and the fifth valve 13-5 are opened, the first valve 13-1 and the fourth valve 13-4 are closed, water in the constant-temperature water bath enters the light pipe heat exchanger 7 through the second valve 13-2, is cooled by evaporating with outside air and spray water and then returns to the constant-temperature water bath 10 through the fifth valve 13-5, so that cooling water circulation is completed, the spray water system is opened under the experimental condition, and the experiment of the influence of the spray water quantity on the performance is realized by adjusting the spray water quantity;
(2-3) finned tube air cooling + light pipe evaporation cooling series experiment working conditions: the first valve 13-1, the fourth valve 13-4 and the fifth valve 13-5 are opened, the second valve 13-2 and the third valve 13-3 are closed, water in the constant-temperature water bath enters the finned tube heat exchanger 4 through the first valve 13-1, is cooled by air outside the tube, enters the light tube heat exchanger 7 through the fourth valve 13-4, is cooled by air outside the tube and spray water in an evaporative manner, and returns to the constant-temperature water bath 10 through the fifth valve 13-5, so that cooling water circulation is completed, the spray water system is opened under the experimental working condition, and an experiment of the influence of the spray water quantity on performance is realized by adjusting the spray water quantity;
(2-4) finned tube air cooling + light pipe evaporation cooling parallel experimental working conditions: the first valve 13-1, the second valve 13-2, the third valve 13-3 and the fifth valve 13-5 are opened, the fourth valve 13-4 is closed, water in the constant-temperature water bath enters the finned tube heat exchanger 4 and the light tube heat exchanger 7 through the first valve 13-1 and the fourth valve 13-4 respectively, and returns to the constant-temperature water bath 10 after cooling with air outside the pipe and evaporative cooling with spray water, so that cooling water circulation is completed.
Claims (4)
1. The utility model provides a compound crossing current closed cooling tower capability test system of forced air cooling evaporation which characterized in that: the testing system consists of a tower body (1), a water baffle (2), an air inlet partition plate (3), a finned tube heat exchanger (4), a filler (6), a light tube heat exchanger (7), a fan (14), a data acquisition system (15), an air speed measuring instrument (16), a temperature and humidity controller (17), an air outlet pipe (18), an air inlet pipe (19), a spraying water system and a constant temperature inlet simulation system;
the spraying water system is formed by connecting a spraying calandria (5), a water collecting tank (8), a first circulating water pump (11-1), a first flowmeter (12-1) and a sixth valve (13-6) through pipelines; the constant-temperature inlet simulation system is formed by connecting a constant-temperature water bath (10), a second circulating water pump (11-2), a second flowmeter (12-2) and a circulating pipeline; the water baffle (2) and the air inlet partition plate (3) are arranged in the inner cavity of the tower body (1) from left to right, and the inner cavity of the tower body (1) is divided into a left chamber (1-1), a middle chamber (1-2) and a right chamber (1-3); a fan (14) is arranged at the top of the left chamber (1-1), and an air outlet pipe (18) is connected to the fan (14); the middle chamber (1-2) is provided with a finned tube heat exchanger (4), a spraying calandria (5), a filler (6), a light pipe heat exchanger (7) and a water collection tank (8) from top to bottom; the air inlet partition plate (3) is provided with a first air inlet (3-1), a second air inlet (3-2) and a third air inlet (3-3) from top to bottom; the top of the right chamber (1-3) is connected with an air inlet pipe (19); the bottom of the right chamber (1-3) is provided with a water pan (9); the bottom of the water pan (9) is connected with a drain valve (20); the outlet of the constant temperature water bath (10) is divided into two paths, one path is connected with the inlet of the finned tube heat exchanger (4) through a first valve (13-1), and the other path is connected with the inlet of the light tube heat exchanger (7) through a second valve (13-2); the inlet of the constant-temperature water bath (10) is formed by gathering two paths, one path is connected with the inlet of the constant-temperature water bath (10) through the outlet of the finned tube heat exchanger (4) by the third valve (13-3), the other path is connected with the inlet of the constant-temperature water bath (10) through the outlet of the light tube heat exchanger (7) by the fifth valve (13-5), and the outlet of the finned tube heat exchanger (4) is connected with the inlet of the light tube heat exchanger (7) through the fourth valve (13-4).
2. The performance test system of the air-cooled evaporation compound type transverse flow closed cooling tower according to claim 1, characterized in that: the data acquisition system (15) is connected with a temperature sensor and a humidity sensor through signal transmission lines; the temperature sensors are arranged at the inlets and outlets of the finned tube heat exchanger (4) and the light tube heat exchanger (7), the inlet of the spray calandria (5), the filler (6), the outer wall surface of the light tube heat exchanger (7), the first air inlet (3-1), the second air inlet (3-2) and the third air inlet (3-3) and are used for measuring the water temperature or the air temperature at each part; the humidity sensors are arranged at the first air inlet (3-1), the second air inlet (3-2) and the third air inlet (3-3) and are used for measuring the relative humidity of inlet air.
3. The performance test system of the air-cooled evaporation compound type transverse flow closed cooling tower according to claim 1, characterized in that: the finned tube heat exchanger (4), the filler (6) and the light pipe heat exchanger (7) are movably arranged, and the positions can be exchanged according to requirements so as to test the influence of the relative positions of the finned tube heat exchanger, the filler and the light pipe heat exchanger on the performance of the composite tower.
4. A performance test method of an air-cooling evaporation composite type transverse flow closed cooling tower is characterized in that the performance test system of the air-cooling evaporation composite type transverse flow closed cooling tower of any one of claims 1 to 3 is used, and the test method is as follows:
(1) air side: outdoor air enters a right chamber (1-3) in the tower through an air inlet pipe (19) under the suction action of a fan (14), enters a middle chamber (1-2) through a first air inlet (3-1), a second air inlet (3-2) and a third air inlet (3-3) in an air inlet partition plate (3) after being subjected to static pressure adjustment, is subjected to heat and moisture exchange with a finned tube heat exchanger (4), spray water, a packed tower (6) and a light tube heat exchanger (7), enters a left chamber (1-1) after being subjected to water retaining by a water retaining plate (2), and is discharged to the outside through an air outlet pipe (18) by the fan (4), so that an air circulation is completed; the air inlet parameters are regulated and controlled through a temperature and humidity controller (17), the air inlet position and the air quantity of different air inlets are regulated by controlling the opening and closing of a first air inlet (3-1), a second air inlet (3-2) and a third air inlet (3-3) and the opening, the air flow regulation is completed by changing the rotating speed through the frequency conversion of a fan (14), the circulating air quantity of the cooling tower is measured through an air speed measuring instrument (16), and therefore the experiment of the influence of the circulating air quantity, the air inlet parameters, the air inlet position and the different air inlet flow on the cooling performance of the cooling tower can be realized;
(2) circulating water side: the water in the constant-temperature water bath (10) enters the middle chamber (1-2) through a circulating pipeline under the action of a second circulating pump (11-2) and is regulated through a valve according to the following experimental working conditions:
(2-1) air cooling experimental working conditions of the individual finned tubes: the first valve (13-1) and the third valve (13-3) are opened, the second valve (13-2), the fourth valve (13-4) and the fifth valve (13-5) are closed, water in the constant-temperature water bath enters the finned tube heat exchanger (4) through the first valve (13-1), is cooled by air outside the tube and then returns to the constant-temperature water bath (10) through the third valve (13-3), so that cooling water circulation is completed, and the spray water system is stopped under the experimental working condition;
(2-2) working conditions of single light pipe evaporative cooling experiment: the second valve (13-2) and the fifth valve (13-5) are opened, the first valve (13-1) and the fourth valve (13-4) are closed, water in the constant-temperature water bath enters the light pipe heat exchanger (7) through the second valve (13-2), is cooled by evaporating with air outside the pipe and spray water, and then returns to the constant-temperature water bath (10) through the fifth valve (13-5), so that cooling water circulation is completed, the spray water system is started under the experimental working condition, and the experiment of the influence of the spray water quantity on the performance is realized by adjusting the spray water quantity;
(2-3) finned tube air cooling + light pipe evaporation cooling series experiment working conditions: the first valve (13-1), the fourth valve (13-4) and the fifth valve (13-5) are opened, the second valve (13-2) and the third valve (13-3) are closed, water in the constant-temperature water bath enters the finned tube heat exchanger (4) through the first valve (13-1), is cooled by air outside the tube, enters the light tube heat exchanger (7) through the fourth valve (13-4), is cooled by air outside the tube and spray water in an evaporative manner, and then returns to the constant-temperature water bath (10) through the fifth valve (13-5), so that a cooling water circulation is completed, the spray water system is started under the experimental working condition, and an experiment that the spray water quantity affects the performance is realized by adjusting the spray water quantity;
(2-4) finned tube air cooling + light pipe evaporation cooling parallel experimental working conditions: the first valve (13-1), the second valve (13-2), the third valve (13-3) and the fifth valve (13-5) are opened, the fourth valve (13-4) is closed, water in the constant-temperature water bath enters the finned tube heat exchanger (4) and the light tube heat exchanger (7) through the first valve (13-1) and the fourth valve (13-4) respectively, and returns to the constant-temperature water bath (10) after being cooled by air outside the tube and subjected to spray water evaporative cooling, so that cooling water circulation is completed, the spray water system is opened under the experimental working condition, and the experiment of the influence of the spray water quantity on the performance is realized by adjusting the spray water quantity.
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| CN114659040A (en) * | 2022-03-25 | 2022-06-24 | 宁波步来特电器有限公司 | LED lamp capable of automatically adjusting temperature |
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