High-efficiency mvr falling-film evaporative computer room equipment thermal management system and method

Abstract

A high-efficiency MVR falling film evaporative cooling system and method for computer room equipment belongs to the field of thermal management technology. The system includes a falling film evaporative cooling module for the equipment unit and an MVR circulation system. Option 1: The falling film evaporative cooling module for the equipment unit includes a cabinet shell (10), the equipment unit (20), a liquid distributor (30), a water pump (60), and a steam-water separator (70). The MVR circulation system includes a steam compressor or fan (80), a radiator (90), an oil separator (100), a flash tank (110), and a blower (120). Option 2: Based on Option 1, the blower (120) is removed, and an ejector (130) is added. Option 3: Based on Option 1, the MVR circulation system only includes a steam compressor (80) and a radiator (90). All three options can effectively improve the system's heat transfer efficiency and heat transfer temperature difference.

Description

Technical Field

[0001] This invention relates to a high-efficiency MVR falling film evaporative air conditioning system thermal management system and method, belonging to the field of thermal management technology. Background Technology

[0002] Computer room equipment generates heat during operation, and excessively high temperatures can significantly impact its performance, lifespan, and safety. Therefore, researching thermal management technologies for computer room equipment and implementing effective methods to rationally control equipment temperature is of great significance for promoting the development of the electronics and information technology industry.

[0003] Traditional liquid cooling systems require maintaining the temperature of the cooling medium within a certain range to ensure its heat dissipation effect on the equipment. However, controlling the temperature of the cooling medium can present certain challenges, especially in complex environments such as large-scale computer rooms. Uneven temperature distribution or fluctuations can affect heat dissipation efficiency, causing some equipment to overheat or underheat.

[0004] In addition, the heat transfer medium in traditional liquid cooling systems generally has a small heat capacity. Even if it can absorb a large amount of heat in a short period of time, its heat capacity is limited. Therefore, under prolonged high-load operation, the heat transfer medium may quickly reach saturation and become unable to continue absorbing and removing more heat. This leads to a decrease in heat dissipation efficiency, making it unable to meet the demands of prolonged high heat loads. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency MVR falling film evaporative air conditioning system and method for thermal management of computer room equipment. By utilizing the MVR falling film evaporation principle, the system's heat transfer efficiency and heat transfer temperature difference are effectively improved, aiming to provide a high-efficiency and reliable thermal management method.

[0006] Option 1:

[0007] A high-efficiency MVR falling film evaporative cooling system for computer room equipment is characterized by comprising a falling film evaporative liquid cooling module for the equipment unit and an MVR circulation system.

[0008] The falling film evaporative liquid cooling module of the equipment unit includes a cabinet shell, an equipment unit, a liquid distributor, a water pump, and a steam-water separator. A collection tank filled with coolant is provided at the bottom of the cabinet shell. The surface of the equipment unit is covered with a polymer insulating film, evenly distributed in the interlayer inside the middle of the cabinet shell. The liquid distributor is installed inside the cabinet shell near the top. The cabinet shell has an outlet port for steam output at the middle of the top, a water inlet port for coolant input on one side near the top, and an air inlet port for low-temperature flash steam input at the middle of the other side. The steam-water separator is located at the outlet port of the cabinet shell.

[0009] The MVR circulation system includes a steam compressor or fan, a radiator, an oil separator, a flash tank, and a blower. The steam compressor or fan is provided with an inlet port for introducing steam and an outlet port for outputting steam. The radiator is provided with an inlet port for introducing steam from the outlet of the steam compressor or fan and an outlet port for outputting condensate. The flash tank has an inlet port on one side above for introducing condensate after oil removal by the oil separator, and a vacuum treatment port on the lower side above the liquid surface. The flash tank has an outlet port on the other side near the top for outputting flash steam, and an outlet port at the bottom for outputting flash condensate.

[0010] The air outlet of the cabinet shell is connected to the air inlet of the steam compressor or fan. The air outlet of the steam compressor or fan is connected to the air inlet of the radiator. The water outlet of the radiator is connected to the water inlet of the flash tank via an oil separator. The air outlet of the flash tank is connected to the air inlet of the cabinet shell for inputting low-temperature flash steam via a fan. The water outlet of the flash tank is connected to the collection tank at the bottom of the cabinet shell via a water pump and then to the water inlet of the cabinet shell. The water inlet is then connected to the liquid distributor.

[0011] The method for the high-efficiency MVR falling film evaporative air conditioning system thermal management system described in Scheme 1 is characterized by comprising the following processes:

[0012] S1. Falling film evaporation process: The coolant in the collection tank is pumped into the cabinet through the water inlet port of the falling film evaporation liquid cooling module cabinet of the equipment unit. The coolant is evenly distributed on the outer surface of the equipment unit by the liquid distributor to form a liquid film. The liquid absorbs the heat generated during the operation of the equipment unit. When the liquid in the liquid film reaches saturation, it evaporates to produce steam. After the steam-water separator removes the impurities, the steam is discharged from the air outlet port of the cabinet.

[0013] S2 and MVR processes include the following two methods:

[0014] When the temperature of the water vapor generated by the system is between 10℃ and 38℃, a steam compressor is used between the air outlet port of the cabinet shell and the air inlet port of the radiator; when the temperature of the water vapor generated by the system is between 38℃ and 70℃, a steam compressor or a fan is used between the air outlet port of the cabinet shell and the air inlet port of the radiator.

[0015] When a steam compressor is located between the air outlet port of the cabinet shell and the air inlet port of the radiator, the steam discharged from the air outlet port of the cabinet shell enters the steam compressor through the air inlet port of the steam compressor for compression, the steam temperature and pressure are increased, and then it is discharged through the air outlet port of the steam compressor. When the system liquid level is insufficient, water is added at the steam compressor.

[0016] When a fan is installed between the air outlet of the server rack and the air inlet of the radiator, the steam discharged from the air outlet of the server rack is directly transported to the air inlet of the radiator via the fan.

[0017] S3. Condensation process: Compressed steam discharged from the outlet port of the steam compressor or fan enters the radiator through the inlet port of the radiator to release heat and condense, exchanging heat with cooling water or air. After condensation, the steam changes from a gaseous state to a liquid water state and is discharged from the outlet port of the radiator.

[0018] S4. Flash Evaporation Process: The condensate discharged from the outlet port of the radiator has a high temperature and pressure. After being treated by an oil separator to remove oil, it is sent to the inlet port of the flash tank for cooling and pressure reduction. The generated low-temperature flash steam is discharged from the outlet port of the flash tank and pumped by a fan to the inlet port on the outer shell of the cabinet for input of low-temperature flash steam to enter the interior to participate in the heat exchange process. The generated low-temperature condensate is discharged from the outlet port of the flash tank and returned to the falling film evaporative liquid cooling module of the equipment unit for circulation via a water pump.

[0019] Option 2:

[0020] A high-efficiency MVR falling film evaporative cooling system for computer room equipment is characterized by comprising a falling film evaporative liquid cooling module for the equipment unit and an MVR circulation system.

[0021] The falling film evaporative liquid cooling module of the equipment unit includes a cabinet shell, an equipment unit, a liquid distributor, a water pump, and a steam-water separator. A collection tank filled with coolant is provided at the bottom of the cabinet shell. The surface of the equipment unit is covered with a polymer insulating film, evenly distributed in the interlayer inside the middle of the cabinet shell. The liquid distributor is installed inside the cabinet shell near the top. The cabinet shell has an outlet port for steam output at the middle of the top, a water inlet port for coolant input on one side near the top, and an air inlet port for low-temperature flash steam input at the middle of the other side. The steam-water separator is located at the outlet port of the cabinet shell.

[0022] The MVR circulation system includes a steam compressor or fan, a radiator, an oil separator, a flash tank, and an ejector. The steam compressor or fan has an inlet port for introducing steam and an outlet port for outputting steam. The radiator has an inlet port for introducing steam from the outlet of the steam compressor or fan and an outlet port for outputting condensate. The flash tank has an inlet port on one side above for introducing condensate after oil removal by the oil separator, and a vacuum treatment port on the lower side above the liquid surface. The flash tank has an outlet port on the other side near the top for outputting flash steam, and an outlet port at the bottom for outputting flash condensate.

[0023] The air outlet of the cabinet shell is connected to the air inlet of the steam compressor or fan. The air outlet of the steam compressor or fan is connected to the air inlet of the radiator. The water outlet of the radiator is connected to the water inlet of the flash tank via an oil separator. The air outlet and water outlet of the flash tank are connected to the collection tank at the bottom of the cabinet shell via an ejector and to the water inlet of the cabinet shell for introducing coolant via a water pump. The water inlet is then connected to the liquid distributor.

[0024] The method for the high-efficiency MVR falling film evaporative air conditioning system thermal management system described in Scheme 2 is characterized by comprising the following processes:

[0025] S1. Falling film evaporation process: The coolant in the collection tank is pumped into the cabinet through the water inlet port of the falling film evaporation liquid cooling module cabinet of the equipment unit. The coolant is evenly distributed on the outer surface of the equipment unit by the liquid distributor to form a liquid film. The liquid absorbs the heat generated during the operation of the equipment unit. When the liquid in the liquid film reaches saturation, it evaporates to produce steam. After the steam-water separator removes the impurities, the steam is discharged from the air outlet port of the cabinet.

[0026] S2 and MVR processes include the following two methods:

[0027] When the temperature of the water vapor generated by the system is between 10℃ and 38℃, a steam compressor is used between the air outlet port of the cabinet shell and the air inlet port of the radiator; when the temperature of the water vapor generated by the system is between 38℃ and 70℃, a steam compressor or a fan is used between the air outlet port of the cabinet shell and the air inlet port of the radiator.

[0028] When a steam compressor is located between the air outlet port of the cabinet shell and the air inlet port of the radiator, the steam discharged from the air outlet port of the cabinet shell enters the steam compressor through the air inlet port of the steam compressor for compression, the steam temperature and pressure are increased, and then it is discharged through the air outlet port of the steam compressor. When the system liquid level is insufficient, water is added at the steam compressor.

[0029] When a fan is installed between the air outlet of the server rack and the air inlet of the radiator, the steam discharged from the air outlet of the server rack is directly transported to the air inlet of the radiator via the fan.

[0030] S3. Condensation process: Compressed steam discharged from the outlet port of the steam compressor or fan enters the radiator through the inlet port of the radiator to release heat and condense, exchanging heat with cooling water or air. After condensation, the steam changes from a gaseous state to a liquid water state and is discharged from the outlet port of the radiator.

[0031] S4. Flash Evaporation Process: The condensate discharged from the outlet port of the radiator has a high temperature and pressure. After being treated by an oil separator to remove oil, it is sent to the inlet port of the flash tank for cooling and pressure reduction. The generated low-temperature flash steam is discharged from the outlet port of the flash tank. It is mixed with the low-temperature condensate discharged from the outlet port of the flash tank through an ejector and then returned to the falling film evaporative liquid cooling module of the equipment unit for circulation via a water pump.

[0032] Option 3:

[0033] A high-efficiency MVR falling film evaporative cooling system for computer room equipment is characterized by comprising a falling film evaporative liquid cooling module for the equipment unit and an MVR circulation system.

[0034] The falling film evaporative liquid cooling module of the equipment unit includes a cabinet shell, an equipment unit, a liquid distributor, a water pump, and a steam-water separator. A collection tank filled with coolant is provided at the bottom of the cabinet shell. The surface of the equipment unit is covered with a polymer insulating film, evenly distributed in the interlayer inside the middle of the cabinet shell. The liquid distributor is installed inside the cabinet shell near the top. The cabinet shell has an outlet port for steam output at the middle of the top, a water inlet port for coolant input on one side near the top, and an air inlet port for low-temperature flash steam input at the middle of the other side. The steam-water separator is located at the outlet port of the cabinet shell.

[0035] The MVR circulation system includes a steam compressor and a radiator; the steam compressor is provided with an inlet port for introducing steam and an outlet port for outputting steam, and the radiator is provided with an inlet port for introducing steam from the outlet of the steam compressor and an outlet port for outputting condensate.

[0036] The air outlet of the cabinet shell is connected to the air inlet of the steam compressor, the air outlet of the steam compressor is connected to the air inlet of the radiator, the water outlet of the radiator is connected to the water inlet of the cabinet shell via a water pump, and the water inlet is then connected to the liquid distributor.

[0037] The method for the high-efficiency MVR falling film evaporative air conditioning system thermal management system described in Scheme 3 is characterized by including the following processes:

[0038] S1. Falling film evaporation process: The coolant in the collection tank is pumped into the cabinet through the water inlet port of the falling film evaporation liquid cooling module cabinet of the equipment unit. The coolant is evenly distributed on the outer surface of the equipment unit by the liquid distributor to form a liquid film. The liquid absorbs the heat generated during the operation of the equipment unit. When the liquid in the liquid film reaches saturation, it evaporates to produce steam. After the steam-water separator removes the impurities, the steam is discharged from the air outlet port of the cabinet.

[0039] S2, MVR process: Steam discharged from the exhaust port of the cabinet shell enters the steam compressor through the intake port of the steam compressor for compression, the steam temperature and pressure are increased, and then it is discharged through the exhaust port of the steam compressor.

[0040] S3. Condensation process: Compressed steam discharged from the steam compressor outlet port enters the radiator through the radiator inlet port to release heat and condense, exchanging heat with cooling water or air. After condensation, the steam changes from a gaseous state to a liquid water state and is discharged from the radiator outlet port. It is then pumped back to the falling film evaporative liquid cooling module of the equipment unit for circulation.

[0041] According to the high-efficiency MVR falling film evaporative air conditioning system described in Scheme 1, Scheme 2 and Scheme 3, the characteristic is that: the coolant can be pure water, methanol or ethanol; the heat exchange medium of the radiator can be cooling water or air.

[0042] According to the high-efficiency MVR falling film evaporative thermal management system described in Scheme 1, Scheme 2 and Scheme 3, the cabinet shell is made of corrosion-resistant stainless steel, anti-corrosion coated steel plate or aluminum alloy plate, and is formed into a sealed vacuum container through a forming process.

[0043] The advantages and beneficial effects of the three solutions of this invention are as follows:

[0044] Based on the traditional liquid-cooled thermal management system, MVR technology is introduced. By compressing the water vapor generated by heating and evaporation, its temperature is increased, thereby effectively increasing the heat exchange temperature difference between the system and the external environment. This allows the system to transfer heat in a more efficient manner and significantly improves the system's heat dissipation rate.

[0045] The design of the liquid-cooled module's falling film evaporation uniform liquid distribution structure effectively reduces the thermal resistance between the heat transfer medium and the heat dissipation surface, promotes uniform heat dissipation on the equipment surface, improves heat transfer efficiency within a limited space, and has a compact structure, providing a stable thermal management solution for the long-term, high-load reliable operation of the system.

[0046] The main difference between Scheme 1, Scheme 2 and Scheme 3 is that Scheme 1 and Scheme 2 can reduce the temperature of the system condensate to a lower level through the flash evaporation process, which is suitable for situations where the system requires coolant below 40°C; while Scheme 3 is suitable for situations where the system requires coolant up to 40°C, and the system structure is simpler. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of a high-efficiency MVR falling film evaporative air conditioning system for a computer room according to Scheme 1 of the present invention;

[0048] Figure 2This is a schematic diagram of the structure of a high-efficiency MVR falling film evaporative air conditioning system for a computer room, according to Scheme 2 of the present invention.

[0049] Figure 3 This is a schematic diagram of the structure of a high-efficiency MVR falling film evaporative air conditioning system for a computer room, according to Scheme 3 of the present invention. The numbers in the diagram are as follows: 10-cabinet shell, 11-water inlet port, 12-air outlet port, 13-air inlet port, 20-equipment unit, 30-liquid distributor, 40-coolant, 50-collection tank, 60-water pump, 70-steam-water separator, 80-steam compressor, 81-air inlet port, 82-air outlet port, 90-radiator, 91-air inlet port, 92-water outlet port, 100-oil separator, 110-flash tank, 111-water inlet port, 112-air outlet port, 113-water outlet port, 114-vacuum port, 120-fan, 130-ejector. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0051] As attached Figure 1 As shown, a specific embodiment of the high-efficiency MVR falling film evaporative air conditioning system and method for computer room equipment according to Scheme 1 of the present invention is given.

[0052] A high-efficiency MVR falling film evaporative cooling room equipment thermal management system works by including the equipment unit's falling film evaporative liquid cooling module and the MVR circulation system.

[0053] The falling film evaporative liquid cooling module of the equipment unit includes a cabinet shell 10, an equipment unit 20, a liquid distributor 30, a water pump 60, and a steam-water separator 70; the bottom of the cabinet shell 10 is provided with a collection tank 50 filled with coolant 40; the surface of the equipment unit 20 is covered with a polymer insulating film, which is evenly arranged on the interlayer in the middle position inside the cabinet shell 10; the liquid distributor 30 is installed inside the cabinet shell 10 near the top position; the cabinet shell 10 has an exhaust port 12 for outputting steam at the middle position above the top, a water inlet port 11 for introducing coolant on one side near the top position, and an air inlet port 13 for inputting low-temperature flash steam at the middle of the other side; the steam-water separator 70 is located at the exhaust port 12 of the cabinet shell 10.

[0054] The MVR circulation system includes a steam compressor or fan 80, a radiator 90, an oil separator 100, a flash tank 110, and a blower 120. The steam compressor or fan 80 is provided with an inlet port 81 for introducing steam and an outlet port 82 for outputting steam. The radiator 90 is provided with an inlet port 91 for introducing steam from the outlet of the steam compressor or fan 80 and an outlet port 92 for outputting condensate. The flash tank 110 has an inlet port 111 on one side above for introducing condensate after oil removal by the oil separator 100, and a vacuum treatment port 114 on the lower side above the liquid surface. The flash tank 110 has an outlet port 112 on the other side near the top for outputting flash steam, and an outlet port 113 at the bottom for outputting flash condensate.

[0055] The air outlet 12 of the cabinet shell 10 is connected to the air inlet 81 of the steam compressor or fan 80. The air outlet 82 of the steam compressor or fan 80 is connected to the air inlet 91 of the radiator 90. The water outlet 92 of the radiator 90 is connected to the water inlet 111 of the flash tank 110 via the oil separator 100. The air outlet 112 of the flash tank 110 is connected to the air inlet 13 of the cabinet shell 10 for inputting low-temperature flash steam via the fan 120. The water outlet 113 of the flash tank 110 is connected to the bottom collection tank 50 of the cabinet shell 10 via the water pump 60 and the water inlet 11 of the cabinet shell 10. The water inlet 11 is then connected to the liquid distributor 30.

[0056] The coolant 40 can be pure water, methanol or ethanol; the heat exchange medium of the radiator 90 can be cooling water or air.

[0057] The cabinet shell 10 is made of corrosion-resistant stainless steel, corrosion-resistant coated steel plate or aluminum alloy plate, and is formed into a sealed vacuum container through a forming process.

[0058] The following is a method for a high-efficiency MVR falling film evaporative air conditioning system thermal management system for computer rooms, as described in Scheme 1, including the following processes:

[0059] S1. Falling film evaporation process: Coolant 40 in collection tank 50 enters the interior of cabinet 10 through water inlet port 11 of cabinet 10 via water pump 60. It is then evenly distributed on the outer surface of equipment unit 20 by liquid distributor 30 to form a liquid film, which absorbs the heat generated during the operation of equipment unit 20. When the liquid in the liquid film reaches saturation, it evaporates to produce steam. After removing the impurities of liquid droplets by steam-water separator 70, it is discharged from the air outlet port 12 of cabinet 10.

[0060] S2 and MVR processes include the following two methods:

[0061] When the temperature of the water vapor generated by the system is between 10℃ and 38℃, a steam compressor is installed between the air outlet port 12 of the cabinet shell 10 and the air inlet port 91 of the radiator 90; when the temperature of the water vapor generated by the system is between 38℃ and 70℃, a steam compressor or a ventilator is installed between the air outlet port 12 of the cabinet shell 10 and the air inlet port 91 of the radiator 90.

[0062] When a steam compressor is located between the air outlet port 12 of the cabinet shell 10 and the air inlet port 91 of the radiator 90, the steam discharged from the air outlet port 12 of the cabinet shell 10 enters the steam compressor through the air inlet port 81 of the steam compressor for compression, the steam temperature and pressure are increased, and then it is discharged through the air outlet port 82 of the steam compressor. When the system liquid level is insufficient, water is added at the steam compressor.

[0063] When a fan is installed between the air outlet 12 of the cabinet shell 10 and the air inlet 91 of the radiator 90, the steam discharged from the air outlet 12 of the cabinet shell 10 is directly transported to the air inlet 91 of the radiator 90 via the fan.

[0064] S3. Condensation process: Compressed steam discharged from the outlet port 82 of the steam compressor or fan 80 enters the interior of the radiator 90 through the inlet port 91 of the radiator 90 to release heat and condense, and exchanges heat with cooling water or air. After condensation, the steam changes from gaseous state to liquid water and is discharged from the outlet port 92 of the radiator 90.

[0065] S4. Flash Evaporation Process: The condensate discharged from the outlet port 92 of the radiator 90 has a high temperature and pressure. After being treated by the oil separator 100 to remove oil, it is sent to the inlet port 111 of the flash tank 110 for cooling and pressure reduction. The generated low-temperature flash steam is discharged from the outlet port 112 of the flash tank 110 and is drawn by the fan 120 to the inlet port 13 on the cabinet shell 10 for inputting low-temperature flash steam to enter the interior and participate in the heat exchange process. The generated low-temperature condensate is discharged from the outlet port 113 of the flash tank 110 and is returned to the falling film evaporative liquid cooling module of the equipment unit for circulation via the water pump 60.

[0066] As attached Figure 2 As shown, a specific embodiment of a high-efficiency MVR falling film evaporative air conditioning system and method for computer room equipment is presented in Scheme 2 of the present invention.

[0067] A high-efficiency MVR falling film evaporative cooling room equipment thermal management system works by including the equipment unit's falling film evaporative liquid cooling module and the MVR circulation system.

[0068] The falling film evaporative liquid cooling module of the equipment unit includes a cabinet shell 10, an equipment unit 20, a liquid distributor 30, a water pump 60, and a steam-water separator 70; the bottom of the cabinet shell 10 is provided with a collection tank 50 filled with coolant 40; the surface of the equipment unit 20 is covered with a polymer insulating film, which is evenly arranged on the interlayer in the middle position inside the cabinet shell 10; the liquid distributor 30 is installed inside the cabinet shell 10 near the top position; the cabinet shell 10 has an exhaust port 12 for outputting steam at the middle position above the top, a water inlet port 11 for introducing coolant on one side near the top position, and an air inlet port 13 for inputting low-temperature flash steam at the middle of the other side; the steam-water separator 70 is located at the exhaust port 12 of the cabinet shell 10.

[0069] The MVR circulation system includes a steam compressor or fan 80, a radiator 90, an oil separator 100, a flash tank 110, and an ejector 130. The steam compressor or fan 80 is provided with an inlet port 81 for introducing steam and an outlet port 82 for outputting steam. The radiator 90 is provided with an inlet port 91 for introducing steam from the outlet of the steam compressor or fan 80 and an outlet port 92 for outputting condensate. The flash tank 110 has an inlet port 111 on one side above for introducing condensate after oil removal by the oil separator 100, and a vacuum treatment port 114 on the lower side above the liquid surface. The flash tank 110 has an outlet port 112 on the other side near the top for outputting flash steam, and an outlet port 113 at the bottom for outputting flash condensate.

[0070] The air outlet 12 of the cabinet shell 10 is connected to the air inlet 81 of the steam compressor or fan 80. The air outlet 82 of the steam compressor or fan 80 is connected to the air inlet 91 of the radiator 90. The water outlet 92 of the radiator 90 is connected to the water inlet 111 of the flash tank 110 via the oil separator 100. The air outlet 112 and water outlet 113 of the flash tank 110 are connected to the bottom collection tank 50 of the cabinet shell 10 via the ejector 130 and the water inlet 11 of the cabinet shell 10 for introducing coolant via the water pump 60. The water inlet 11 is then connected to the liquid distributor 30.

[0071] The coolant 40 can be pure water, methanol or ethanol; the heat exchange medium of the radiator 90 can be cooling water or air.

[0072] The cabinet shell 10 is made of corrosion-resistant stainless steel, corrosion-resistant coated steel plate or aluminum alloy plate, and is formed into a sealed vacuum container through a forming process.

[0073] The following is a method for a high-efficiency MVR falling film evaporative air conditioning system thermal management system for computer rooms, as described in Scheme 2, including the following processes:

[0074] S1. Falling film evaporation process: Coolant 40 in collection tank 50 enters the interior of cabinet 10 through water inlet port 11 of cabinet 10 via water pump 60. It is then evenly distributed on the outer surface of equipment unit 20 by liquid distributor 30 to form a liquid film, which absorbs the heat generated during the operation of equipment unit 20. When the liquid in the liquid film reaches saturation, it evaporates to produce steam. After removing the impurities of liquid droplets by steam-water separator 70, it is discharged from the air outlet port 12 of cabinet 10.

[0075] S2 and MVR processes include the following two methods:

[0076] When the temperature of the water vapor generated by the system is between 10℃ and 38℃, a steam compressor is installed between the air outlet port 12 of the cabinet shell 10 and the air inlet port 91 of the radiator 90; when the temperature of the water vapor generated by the system is between 38℃ and 70℃, a steam compressor or a ventilator is installed between the air outlet port 12 of the cabinet shell 10 and the air inlet port 91 of the radiator 90.

[0077] When a steam compressor is located between the air outlet port 12 of the cabinet shell 10 and the air inlet port 91 of the radiator 90, the steam discharged from the air outlet port 12 of the cabinet shell 10 enters the steam compressor through the air inlet port 81 of the steam compressor for compression, the steam temperature and pressure are increased, and then it is discharged through the air outlet port 82 of the steam compressor. When the system liquid level is insufficient, water is added at the steam compressor.

[0078] When a fan is installed between the air outlet 12 of the cabinet shell 10 and the air inlet 91 of the radiator 90, the steam discharged from the air outlet 12 of the cabinet shell 10 is directly transported to the air inlet 91 of the radiator 90 via the fan.

[0079] S3. Condensation process: Compressed steam discharged from the outlet port 82 of the steam compressor or fan 80 enters the interior of the radiator 90 through the inlet port 91 of the radiator 90 to release heat and condense, and exchanges heat with cooling water or air. After condensation, the steam changes from gaseous state to liquid water and is discharged from the outlet port 92 of the radiator 90.

[0080] S4. Flash Evaporation Process: The condensate discharged from the outlet port 92 of the radiator 90 has a high temperature and pressure. After being treated by the oil separator 100 to remove oil, it is sent to the inlet port 111 of the flash tank 110 for cooling and pressure reduction. The generated low-temperature flash steam is discharged from the outlet port 112 of the flash tank 110. It is mixed with the low-temperature condensate discharged from the outlet port 113 of the flash tank 110 through the ejector 130, and then returned to the falling film evaporative liquid cooling module of the equipment unit for circulation via the water pump 60.

[0081] As attached Figure 3 As shown, a specific embodiment of a high-efficiency MVR falling film evaporative air conditioning system and method for computer room equipment is presented in Scheme 3 of the present invention.

[0082] A high-efficiency MVR falling film evaporative cooling room equipment thermal management system works by including the equipment unit's falling film evaporative liquid cooling module and the MVR circulation system.

[0083] The falling film evaporative liquid cooling module of the equipment unit includes a cabinet shell 10, an equipment unit 20, a liquid distributor 30, a water pump 60, and a steam-water separator 70; the bottom of the cabinet shell 10 is provided with a collection tank 50 filled with coolant 40; the surface of the equipment unit 20 is covered with a polymer insulating film, which is evenly arranged on the interlayer in the middle position inside the cabinet shell 10; the liquid distributor 30 is installed inside the cabinet shell 10 near the top position; the cabinet shell 10 has an exhaust port 12 for outputting steam at the middle position above the top, a water inlet port 11 for introducing coolant on one side near the top position, and an air inlet port 13 for inputting low-temperature flash steam at the middle of the other side; the steam-water separator 70 is located at the exhaust port 12 of the cabinet shell 10.

[0084] The MVR circulation system includes a steam compressor 80 and a radiator 90; the steam compressor 80 is provided with an air inlet port 81 for introducing steam and an air outlet port 82 for outputting steam, and the radiator 90 is provided with an air inlet port 91 for introducing steam from the outlet of the steam compressor 80 and a water outlet port 92 for outputting condensate.

[0085] The air outlet 12 of the cabinet shell 10 is connected to the air inlet 81 of the steam compressor 80, the air outlet 82 of the steam compressor 80 is connected to the air inlet 91 of the radiator 90, and the water outlet 92 of the radiator 90 is connected to the water inlet 11 of the cabinet shell 10 for introducing coolant via the water pump 60. The water inlet 11 is then connected to the liquid distributor 30.

[0086] The coolant 40 can be pure water, methanol or ethanol; the heat exchange medium of the radiator 90 can be cooling water or air.

[0087] The cabinet shell 10 is made of corrosion-resistant stainless steel, corrosion-resistant coated steel plate or aluminum alloy plate, and is formed into a sealed vacuum container through a forming process.

[0088] The following is a method for a high-efficiency MVR falling film evaporative air conditioning system thermal management system for computer rooms, as described in Scheme 3, including the following processes:

[0089] S1. Falling film evaporation process: Coolant 40 in collection tank 50 enters the interior of cabinet 10 through water inlet port 11 of cabinet 10 via water pump 60. It is then evenly distributed on the outer surface of equipment unit 20 by liquid distributor 30 to form a liquid film, which absorbs the heat generated during the operation of equipment unit 20. When the liquid in the liquid film reaches saturation, it evaporates to produce steam. After removing the impurities of liquid droplets by steam-water separator 70, it is discharged from the air outlet port 12 of cabinet 10.

[0090] S2, MVR process: Steam discharged from the exhaust port 12 of the cabinet shell 10 enters the steam compressor through the intake port 81 of the steam compressor for compression, the steam temperature and pressure are increased, and then it is discharged through the exhaust port 82 of the steam compressor.

[0091] S3. Condensation process: Compressed steam discharged from the outlet port 82 of the steam compressor 80 enters the radiator 90 through the inlet port 91 of the radiator 90 to release heat and condense, exchanging heat with cooling water or air. After condensation, the steam changes from a gaseous state to a liquid water state and is discharged from the outlet port 92 of the radiator 90. It is then returned to the falling film evaporative liquid cooling module of the equipment unit by the water pump 60 for circulation.

Claims

1. A high-efficiency MVR falling film evaporative air conditioning system for computer room equipment, characterized in that: This includes the equipment unit's falling film evaporative liquid cooling module and MVR circulation system; The falling film evaporative liquid cooling module of the equipment unit includes a cabinet shell (10), an equipment unit (20), a liquid distributor (30), a water pump (60), and a steam-water separator (70); the bottom of the cabinet shell (10) is provided with a collection tank (50) filled with coolant (40); the surface of the equipment unit (20) is covered with a polymer insulating film, which is evenly arranged on the interlayer in the middle position inside the cabinet shell (10); the liquid distributor (30) is installed inside the cabinet shell (10) near the top position; the cabinet shell (10) is provided with an outlet port (12) for outputting steam at the middle position above the top, a water inlet port (11) for introducing coolant is provided on one side near the top position, and an air inlet port (13) for inputting low temperature flash steam is provided in the middle of the other side; the steam-water separator (70) is located at the outlet port (12) of the cabinet shell (10); The MVR circulation system includes a steam compressor or fan (80), a radiator (90), an oil separator (100), a flash tank (110), and a blower (120). The steam compressor or fan (80) is provided with an inlet port (81) for introducing steam and an outlet port (82) for outputting steam. The radiator (90) is provided with an inlet port (91) for introducing steam from the outlet of the steam compressor or fan (80) and an outlet port (92) for outputting condensate. The flash tank (110) has an inlet port (111) above one side for introducing condensate after oil removal by the oil separator (100), a vacuum treatment port (114) below the side and above the liquid surface, an outlet port (112) for outputting flash steam is provided near the top on the other side of the flash tank (110), and an outlet port (113) for outputting flash condensate is provided at the bottom of the flash tank (110). The air outlet (12) of the cabinet shell (10) is connected to the air inlet (81) of the steam compressor or fan (80). The air outlet (82) of the steam compressor or fan (80) is connected to the air inlet (91) of the radiator (90). The water outlet (92) of the radiator (90) is connected to the water inlet (111) of the flash tank (110) via the oil separator (100). The air outlet (112) of the flash tank (110) is connected to the air inlet (13) of the cabinet shell (10) for inputting low-temperature flash steam via the fan (120). The water outlet (113) of the flash tank (110) is connected to the bottom collection tank (50) of the cabinet shell (10) via the water pump (60) and the water inlet (11) of the cabinet shell (10). The water inlet (11) is then connected to the liquid distributor (30).

2. The high-efficiency MVR falling film evaporative air conditioning system for computer room equipment according to claim 1, characterized in that: The coolant (40) is pure water, methanol, or ethanol; the heat exchange medium of the radiator (90) is cooling water or air.

3. The high-efficiency MVR falling film evaporative air conditioning system for computer room equipment according to claim 1, characterized in that: The cabinet shell (10) is made of corrosion-resistant stainless steel, anti-corrosion coated steel plate or aluminum alloy plate, and is formed into a sealed vacuum container through a forming process.

4. A thermal management method for computer room equipment, applied to the high-efficiency MVR falling film evaporative thermal management system for computer room equipment as described in claim 1, characterized in that, The process includes the following: S1, Falling film evaporation process: Coolant (40) in the collection tank (50) is pumped by water pump (60) through the water inlet (11) of the cabinet shell (10) of the equipment unit falling film evaporation liquid cooling module cabinet and enters the interior of the cabinet shell (10). The liquid is evenly distributed on the outer surface of the equipment unit (20) by the liquid distributor (30) to form a liquid film, which absorbs the heat generated during the operation of the equipment unit (20). When the liquid in the liquid film reaches saturation, it evaporates to produce steam. After the steam-water separator (70) removes the impurities, it is discharged from the air outlet (12) of the cabinet shell (10). S2 and MVR processes include the following two methods: When the temperature of the water vapor generated by the system is between 10℃ and 38℃, a steam compressor is located between the air outlet (12) of the cabinet shell (10) and the air inlet (91) of the radiator (90); when the temperature of the water vapor generated by the system is between 38℃ and 70℃, a steam compressor or a ventilator is located between the air outlet (12) of the cabinet shell (10) and the air inlet (91) of the radiator (90). When a steam compressor is located between the air outlet (12) of the cabinet shell (10) and the air inlet (91) of the radiator (90), the steam discharged from the air outlet (12) of the cabinet shell (10) enters the steam compressor through the air inlet (81) of the steam compressor for compression, the steam temperature and pressure are increased, and then it is discharged through the air outlet (82) of the steam compressor. When the system liquid level is insufficient, water is added at the steam compressor. When a fan is placed between the air outlet (12) of the cabinet shell (10) and the air inlet (91) of the radiator (90), the steam discharged from the air outlet (12) of the cabinet shell (10) is directly transported to the air inlet (91) of the radiator (90) via the fan. S3. Condensation process: Compressed steam discharged from the outlet port (82) of the steam compressor or fan (80) enters the radiator (90) through the inlet port (91) of the radiator (90) to release heat and condense, and exchanges heat with cooling water or air. After condensation, the steam changes from gaseous state to liquid water and is discharged from the outlet port (92) of the radiator (90). S4, Flash Evaporation Process: The condensate discharged from the outlet port (92) of the radiator (90) has a high temperature and pressure. After being treated by the oil separator (100) to remove oil, it is sent to the inlet port (111) of the flash tank (110) for cooling and pressure reduction. The generated low-temperature flash steam is discharged from the outlet port (112) of the flash tank (110) and pumped by the fan (120) to the inlet port (13) on the cabinet shell (10) for inputting low-temperature flash steam to enter the interior and participate in the heat exchange process. The generated low-temperature condensate is discharged from the outlet port (113) of the flash tank (110) and returned to the falling film evaporative liquid cooling module of the equipment unit for circulation via the water pump (60).

5. A high-efficiency MVR falling film evaporative air conditioning system for computer room equipment, characterized in that: This includes the equipment unit's falling film evaporative liquid cooling module and MVR circulation system; The falling film evaporative liquid cooling module of the equipment unit includes a cabinet shell (10), an equipment unit (20), a liquid distributor (30), a water pump (60), and a steam-water separator (70); the bottom of the cabinet shell (10) is provided with a collection tank (50) filled with coolant (40); the surface of the equipment unit (20) is covered with a polymer insulating film, which is evenly arranged on the interlayer in the middle position inside the cabinet shell (10); the liquid distributor (30) is installed inside the cabinet shell (10) near the top position; the cabinet shell (10) is provided with an outlet port (12) for outputting steam at the middle position above the top, a water inlet port (11) for introducing coolant is provided on one side near the top position, and an air inlet port (13) for inputting low temperature flash steam is provided in the middle of the other side; the steam-water separator (70) is located at the outlet port (12) of the cabinet shell (10); The MVR circulation system includes a steam compressor or fan (80), a radiator (90), an oil separator (100), a flash tank (110), and an ejector (130). The steam compressor or fan (80) is provided with an inlet port (81) for introducing steam and an outlet port (82) for outputting steam. The radiator (90) is provided with an inlet port (91) for introducing steam from the outlet of the steam compressor or fan (80) and an outlet port (92) for outputting condensate. The flash tank (110) has an inlet port (111) above one side for introducing condensate after oil removal by the oil separator (100), a vacuum treatment port (114) below this side and above the liquid surface, an outlet port (112) for outputting flash steam is provided near the top on the other side of the flash tank (110), and an outlet port (113) for outputting flash condensate is provided at the bottom of the flash tank (110). The air outlet (12) of the cabinet shell (10) is connected to the air inlet (81) of the steam compressor or fan (80). The air outlet (82) of the steam compressor or fan (80) is connected to the air inlet (91) of the radiator (90). The water outlet (92) of the radiator (90) is connected to the water inlet (111) of the flash tank (110) via the oil separator (100). The air outlet (112) and water outlet (113) of the flash tank (110) are connected to the bottom collection tank (50) of the cabinet shell (10) via the ejector (130) and the water inlet (11) of the cabinet shell (10) via the water pump (60). The water inlet (11) is then connected to the liquid distributor (30).

6. The high-efficiency MVR falling film evaporative air conditioning system for computer room equipment according to claim 5, characterized in that: The coolant (40) is pure water, methanol, or ethanol; the heat exchange medium of the radiator (90) is cooling water or air.

7. The high-efficiency MVR falling film evaporative air conditioning system for computer room equipment according to claim 5, characterized in that: The cabinet shell (10) is made of corrosion-resistant stainless steel, anti-corrosion coated steel plate or aluminum alloy plate, and is formed into a sealed vacuum container through a forming process.

8. A thermal management method for computer room equipment, applied to the high-efficiency MVR falling film evaporative computer room equipment thermal management system as described in claim 5, characterized in that, The process includes the following: S1, Falling film evaporation process: Coolant (40) in the collection tank (50) is pumped by water pump (60) through the water inlet (11) of the cabinet shell (10) of the equipment unit falling film evaporation liquid cooling module cabinet and enters the interior of the cabinet shell (10). The liquid is evenly distributed on the outer surface of the equipment unit (20) by the liquid distributor (30) to form a liquid film, which absorbs the heat generated during the operation of the equipment unit (20). When the liquid in the liquid film reaches saturation, it evaporates to produce steam. After the steam-water separator (70) removes the impurities, it is discharged from the air outlet (12) of the cabinet shell (10). S2 and MVR processes include the following two methods: When the temperature of the water vapor generated by the system is between 10℃ and 38℃, a steam compressor is located between the air outlet (12) of the cabinet shell (10) and the air inlet (91) of the radiator (90); when the temperature of the water vapor generated by the system is between 38℃ and 70℃, a steam compressor or a ventilator is located between the air outlet (12) of the cabinet shell (10) and the air inlet (91) of the radiator (90). When a steam compressor is located between the air outlet (12) of the cabinet shell (10) and the air inlet (91) of the radiator (90), the steam discharged from the air outlet (12) of the cabinet shell (10) enters the steam compressor through the air inlet (81) of the steam compressor for compression, the steam temperature and pressure are increased, and then it is discharged through the air outlet (82) of the steam compressor. When the system liquid level is insufficient, water is added at the steam compressor. When a fan is placed between the air outlet (12) of the cabinet shell (10) and the air inlet (91) of the radiator (90), the steam discharged from the air outlet (12) of the cabinet shell (10) is directly transported to the air inlet (91) of the radiator (90) via the fan. S3. Condensation process: Compressed steam discharged from the outlet port (82) of the steam compressor or fan (80) enters the radiator (90) through the inlet port (91) of the radiator (90) to release heat and condense, and exchanges heat with cooling water or air. After condensation, the steam changes from gaseous state to liquid water and is discharged from the outlet port (92) of the radiator (90). S4, Flash Evaporation Process: The condensate discharged from the outlet port (92) of the radiator (90) has a high temperature and pressure. After being treated by the oil separator (100) to remove oil, it is sent to the inlet port (111) of the flash tank (110) for cooling and pressure reduction. The generated low-temperature flash steam is discharged from the outlet port (112) of the flash tank (110) and mixed with the low-temperature condensate discharged from the outlet port (113) of the flash tank (110) through the ejector (130). The mixture is then returned to the falling film evaporative liquid cooling module of the equipment unit for circulation via the water pump (60).

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