Heat pipe composite air conditioning unit for machine room and control method of heat pipe composite air conditioning unit

Abstract

The invention discloses a heat pipe composite air conditioning unit for a machine room and a control method of the heat pipe composite air conditioning unit. The heat pipe composite air conditioning unit is characterized in that a heat pipe module and a refrigerating module are combined to form a cold source system in the air conditioning unit, the refrigerating module consists of a compression unit, a condenser, a throttling mechanism, an evaporation channel of an evaporation condenser and the like which form a first working medium circulating loop, the heat pipe module consists of an indoor heat exchanger, a main electromagnetic valve, an air-cooling heat exchanger, a condensation channel of the evaporation condenser, a liquid storage device, a liquid pump and the like which form a second working medium main loop, a bypass branch is arranged between an outlet of the indoor heat exchanger and an inlet of the condensation channel of the evaporation condenser, and a bypass electromagnetic valve is disposed in the bypass branch. A wide annular temperature zone is divided into three functional zones including a refrigerating zone, a composite zone and a heat pipe zone, and working modes of running refrigerating circulation, composite circulation and heat pipe circulation are correspondingly switched and run by the cold source system according to the different functional zones. By the aid of the heat pipe composite air conditioning unit and the control method thereof, utilization of outdoor natural cold sources can be maximized, and low-cost running and energy conservation can be realized.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a heat pipe composite air conditioning unit capable of maximizing the use of indoor and outdoor temperature differences to transport heat at low cost. Background technique [0002] The rapid development of information industry and digital construction has promoted the number of computer rooms and base stations, and the construction scale has increased rapidly. According to statistics, the energy consumption of air conditioners in computer rooms and base stations accounts for 40% to 50% of the total energy consumption. The sensible heat load ratio of the computer room and the base station is large, and it needs to run continuously throughout the year. In the season when the indoor temperature is lower than the outdoor temperature, the conventional air conditioning system still needs to continue to operate the compression refrigeration system, and the refrigeration system h...

AI Technical Summary

Problems solved by technology

This system makes up for the deficiencies of the previous two systems in terms of utilizing the cooling capacity of outdoor low-temperature air and ensuring indoor air quality. However, if the two working modes of compression refrigeration and heat pipe circulation refrigeration are switched at a certain temperature point, can the cooling capacity of the system be stable? Connection and reliable work, etc., are worthy of consideration; at the same time, the upper limit temperature of the heat pipe circulation is too low, which is not conducive to maximizing the use of the cooling capacity of the low-temperature outdoor air

[0007] Utility model patent ZL01278831.7 discloses an energy-saving refrigeration cycle device with a circulation pump. The use of a circulation pump in the heat pipe circulation system is conducive to improving the efficiency of the heat pipe cycle, and also simplifies the installation of the heat pipe system. However, ZL01278831.7 is similar to CN201010528027.X in terms of maximizing the use of the cooling capacity of outdoor low-temperature air, that is, the upper limit temperature of the heat pipe cycle must be low to smoothly connect with the refrigeration cycle

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