Compound air conditioning system with natural cooling function

Abstract

The invention discloses a compound air conditioning system with a natural cooling function. The system is characterized by comprising a compressor module, an air cooling heat exchange module consisting of a heat exchanger module and a cooling fan, a multifunctional liquid accumulator, a liquid pump, an air treatment module and control valves; and a control valve is operated to change a flow path of a refrigerating medium to realize the following three different working modes: a compression refrigeration working mode, a compound refrigeration working mode of coordinated operation of compression refrigeration and natural cooling and a natural cooling working mode. The system adjusts the refrigerating capacity by using fuzzy control, applies natural cooling to replace compression refrigeration in low-temperature or transition seasons, efficiently uses a natural cold source, is particularly suitable for working environment control of a data center, a high-performance computer, a communication base station and power electronic equipment, and substantially reduces the energy consumption and the operation cost.

Description

technical field [0001] The invention relates to the technical field of refrigeration and air conditioning, in particular to a composite air conditioning system with natural cooling function. Background technique [0002] The rapid development of information industry and digital construction has promoted the number of data computer rooms and communication base stations, and the construction scale has grown rapidly. According to statistics, the energy consumption of computer rooms and base station air conditioners accounts for 35% to 50% of the total energy consumption. The sensible heat load ratio of the computer room and base station is large. In order to maintain a suitable working environment temperature, it is necessary to run the air conditioner all year round. In the season when the indoor temperature is higher than the outdoor ambient temperature, especially in low temperature seasons or cold regions, conventional data The air conditioning system of the center and comm...

AI Technical Summary

Problems solved by technology

[0008] Chinese invention patent ZL201210037082.8 discloses a heat pipe air-conditioning system for computer rooms and its control method. The invention couples a separate heat pipe module and a compression refrigeration module through a condensing evaporator, and has three working modes: compression refrigeration, composite refrigeration and heat pipe refrigeration. , the secondary heat exchange is completed in the condensing evaporator, and the cooling capacity is delivered to the cold side through the secondary refrigerant. Its disadvantages are: first, there is a large irreversible heat transfer loss in the secondary heat exchange; second, it is necessary to add a condensing evaporator , such as shell and tube heat exchangers, or several plate heat exchangers; the third is the need for secondary refrigerant

This not only reduces energy efficiency and increases manufacturing costs, but also adds difficulty to the structural layout and manufacturing process of the unit

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