Cold accumulation type refrigeration system with natural cold source and operation method thereof

Abstract

The invention relates to a cold accumulation type refrigeration system with a natural cold source and an operation method thereof. The refrigeration system comprises at least one mechanical refrigeration unit, at least one natural cold source refrigeration unit and a cold accumulation unit. According to the refrigeration system and the operation method thereof, a comprehensive technology of combining mechanical refrigeration with a natural cold source mode and configuring a cold storage device is adopted. When the temperature difference between the cooling temperature of the refrigeration system and the outdoor environment temperature is greater than or equal to 8 DEG C, the refrigeration system only adopts the natural cold source refrigeration unit for refrigeration; when the temperaturedifference value between the cooling temperature of the refrigeration system and the outdoor environment temperature is 3-8 DEG C, the refrigeration system adopts the natural cold source refrigerationunit and the mechanical refrigeration unit for coupling refrigeration; and when the temperature difference between the cooling temperature of the refrigeration system and the outdoor ambient temperature is less than or equal to 3 DEG C, the refrigeration system uses only the mechanical refrigeration unit for refrigeration. According to the refrigeration system and the operation system thereof, the energy of the natural cold source is maximally utilized, the comprehensive energy efficiency of the refrigeration system is improved, and the energy-saving operation effect is achieved.

Description

technical field [0001] The invention relates to a refrigeration system and its operating method, in particular to a cold storage type refrigeration system with a natural cold source and its operating method, especially suitable for data centers and other places requiring perennial refrigeration. Background technique [0002] With the rapid growth of data processing in the communication industry at home and abroad, a large number of data centers have been built in China in recent years. The computer room of the data center is an area that needs to be cooled all the year round, which consumes a lot of energy due to cooling. [0003] The use of natural cooling technology can realize the energy saving of the refrigeration system in winter and transitional seasons. The specific measures are that when the outdoor air temperature is lower than the indoor temperature to a certain extent, the outdoor cold source is introduced into the data room through corresponding technical means, ...

AI Technical Summary

Problems solved by technology

[0004] However, due to the low start-up temperature of natural cooling technology, the application of outdoor low temperature is insufficient, which is the main problem in the actual operation of natural cooling technology application projects

However, if the natural cooling technology is used to further increase the starting temperature, the volume of the unit will be too large, the cost performance will plummet, and the energy saving effect will be reduced.

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