Combined type refrigeration and multi-connected air conditioning system

Abstract

The invention discloses a combined refrigeration and multi-connected air conditioning system which is characterized in that a cold source system of the multi-connected air conditioning system, which is composed of two or more than two outdoor composite refrigeration modules is arranged outdoors; each outdoor combined refrigeration module is formed by compositing a first refrigerant vapor compression refrigeration cycle loop and a second refrigerant cycle loop; one or more direct evaporative indoor air cooler modules are arranged indoors, and a refrigerant storage and transmission unit is connected between each outdoor composite refrigeration module and the corresponding indoor air cooler module to form a closed cycle system through a liquid collecting pipe, a liquid supply main pipe and a return air main pipe. According to the combined refrigeration and multi-connected air conditioning system, the number of the indoor and outdoor modules is set according to the design heating loads of air conditioning objects, refrigerating capacity is precisely regulated, the thermal control demands of various all-weather running data rooms and electronic devices are met, and natural cold sources in days and nights, transition seasons and winters can be used to the maximum extent to realize energy conservation and emission reduction of the air conditioning system.

Description

technical field [0001] The invention relates to the technical field of refrigeration and air conditioning, in particular to a composite refrigeration multi-connected air conditioning system capable of maximizing the use of natural cooling sources to transport heat at low cost. 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 40% to 50% of the total energy consumption. The sensible heat load ratio of computer rooms and base stations is large, and continuous cooling operation is required throughout the year. In the seasons when the indoor temperature is higher than the outdoor ambient temperature, especially in low-temperature seasons or cold regions, conventional air-conditioning systems for...

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. It has not been fully utilized; for the air conditioning system that implements GB / T 19413-2010, since the indoor temperature is set at 24°C, the outdoor ambient temperature when the compression refrigeration is converted to the heat pipe circulation refrigeration must be very low, and the utilization rate of the natural cooling source is low

[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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