Multi-cold-source ice storage air conditioning system with liquid level balance mechanism

Abstract

The invention provides a multi-cold-source ice storage air conditioning system with a liquid level balance mechanism. The multi-cold-source ice storage air conditioning system comprises a cold recovering system, an ice storage device, an air conditioning load side system, a first ice storage pump, a refrigerating unit and the liquid level balance mechanism. The multi-cold-source ice storage air conditioning system has the benefits that the ice storage air conditioning system can realize recycle, storage and utilization of cold energy, saves resources, and improves the utilization efficiency of cold energy; as LNG (Liquefied Natural Gas) cold energy and a refrigerating unit are used for supplying cold together, the use requirements of users on the air conditioning system can be met, all resources can be fully used, and an active role on reducing energy consumption is played effectively; the liquid level balance mechanism solves the liquid level equilibrium problem of a first ice storage tank and a second ice storage tank; as a siphon pipe is omitted, cold loss generated by the siphon pipe can be reduced, and the cold accumulation efficiency is improved; for an indoor machine room, ice tanks can make full use of the height space in the machine room to reduce the occupied area of the ice tanks, so as to reduce construction cost of the machine room; for an outdoor machine room, the overall aesthetics of the ice tanks is improved.

Description

technical field [0001] The invention relates to a cold energy storage and utilization device, in particular to a multi-cold source ice storage air conditioning system with a liquid level balance mechanism. Background technique [0002] The ice-storage air-conditioning system is an air-conditioning system that uses low-valley electricity prices to store ice at night, and melts ice for cooling during daytime peak electricity prices, thereby reducing operating costs and balancing power grid loads. The traditional ice storage air-conditioning system has a relatively single cold source, usually using an electric refrigeration unit. The ice storage device is composed of one or more ice tanks. When the system is running, different ice tanks store or release cold at the same time. When the system introduces other cold sources, the single operation mode of the ice tank cannot meet the requirements of different cold sources working together. [0003] The LNG gasification process will...

AI Technical Summary

Problems solved by technology

However, the use of siphons will have the following problems: For indoor ice storage tanks, since the height of the machine room is usually 4.5-5 meters, and the height of the siphon tubes must be at least 1-1.5 meters, it is necessary to reduce the height of the ice storage tanks to within 3 meters , the area occupied by the ice storage tank is greatly increased, and because the height of the ice storage tank is reduced, the heat exchange efficiency of the ice ball will be affected; for the outdoor ice storage tank, a siphon is installed on the top of the ice storage tank, which will affect the overall appearance of the ice storage tank

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