An indirect evaporative cooling cold water system combined with mechanical refrigeration and switching method

Abstract

The invention discloses an indirect evaporative cooling cold water system combined with mechanical refrigeration and a switching method. The system includes a mechanical refrigeration unit, an indirect evaporative cooling water chiller, a plate heat exchanger, a primary water system and a secondary water system; the mechanical refrigeration unit includes a mechanical Refrigeration condenser, throttle valve, mechanical refrigeration evaporator and compressor; the primary water system is the loop between the indirect evaporative cooling chiller and the plate heat exchanger, and the secondary water system is the plate heat exchanger, mechanical refrigeration evaporator The loop between the terminal air conditioner and the computer room; the primary water system transfers the cooling capacity to the secondary water system through the plate heat exchanger, and the secondary water system transfers the cooling capacity to the terminal air conditioner in the computer room. The system includes three working modes: evaporative cooling mode, hybrid mode and mechanical refrigeration mode, and switches between the three working modes according to the ambient air wet bulb temperature T, which greatly saves the annual energy consumption of the refrigeration system.

Description

technical field [0001] The invention relates to the field of data center refrigeration and air conditioning, in particular to an indirect evaporative cooling cold water system combined with mechanical refrigeration and a switching method. Background technique [0002] With the rapid development of science and technology, the speed of data center construction is increasing day by day. Behind the rapid increase in the scale of the data center is the rapid consumption of energy, in which the energy consumption of the air conditioning and refrigeration system accounts for about 40% of the total energy consumption of the data center. During the rapid construction of the data center, it is necessary to ensure the safe and stable operation of the data center and meet the energy-saving requirements of the data center. At present, indirect evaporative cooling air-conditioning units have been applied in data centers, and have achieved certain energy-saving effects, which has attracte...

AI Technical Summary

Problems solved by technology

Data centers need year-round cooling, and conventional mechanical refrigeration systems cannot make full use of natural cooling sources in winter and transitional seasons, resulting in high energy consumption throughout the year

However, the cooling capacity of the evaporative cooling system cannot meet the cooling requirements of the data center in hot summer weather, and the cooling capacity is greatly affected by the meteorological conditions.

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