A Computer Room Air Conditioning System Based on Direct Evaporative Cooling of Cabinets

Abstract

The invention discloses a computer room air-conditioning system based on direct evaporative cooling of cabinets, which comprises a refrigerant circuit, an oil return circuit and a cooling water circuit. In the present invention, the refrigerant is directly transported to the server, and the evaporator installed on the server is used to directly evaporate the refrigerant to cool the server. Compared with the conventional computer room air conditioning system cooled by air supply, it has large heat dissipation power, high efficiency, and small volume. advantage. Compared with the conventional refrigerant evaporative cooling air-conditioning system, the computer room air-conditioning system of the present invention realizes direct delivery of all liquids to the evaporator by setting a low-pressure circulation bucket and the first frequency conversion magnetic pump, thereby having a small pressure drop of the refrigerant in the evaporator, and the compressor The return air temperature is low, the heat exchange system is large, etc., and the oil return problem of the system is creatively solved by setting the oil return circuit, so that the system has the characteristics of high comprehensive energy efficiency.

Description

technical field [0001] The invention relates to an air-conditioning system for a data center computer room that realizes high efficiency and energy-saving benefits, and belongs to the technical field of design and manufacture of refrigeration and air-conditioning systems. Background technique [0002] With the vigorous development of my country's computer and communication industry, especially the rise of the concept of "cloud computing", large-scale operational data computer rooms have grown rapidly. There are many internal communication devices in the server room, and the heat generation is large, and the heat generation per square meter can reach several kilowatts or even tens of kilowatts. In order to maintain the temperature and humidity requirements required by the computer room, the server room usually requires the air conditioning system to provide cooling throughout the year, which consumes a lot of energy. The rapid development of data centers and their high energ...

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Problems solved by technology

[0005] Technical problem: The purpose of the present invention is to provide a solution to the problem of low heat dissipation density and high fan energy consumption of conventional computer room air-conditioning systems that use cold air to dissipate heat, and large evaporation pressure drop and high return air temperature in common computer room air-conditioning systems that use refrigerant evaporation to dissipate heat. And because the gas-liquid two-phase enters the evaporator, the heat transfer coefficient of the evaporator is low, and the heat transfer area of ​​the evaporator is not fully utilized. A new type of high-efficiency computer room air conditioning system based on direct evaporative cooling of the cabinet

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