Double-evaporator machine room air conditioning system with additional phase change module, and control method of double-evaporator machine room air conditioning system

Abstract

The invention discloses a double-evaporator machine room air conditioning system with an additional phase change module and a control method of the double-evaporator machine room air conditioning system. The system comprises an outdoor unit installed outside a machine room and an indoor unit installed in the machine room, wherein the indoor unit is provided with a first evaporator and a second evaporator integrated with the phase change module, the phase change module is filled with a phase change material, and an inlet and an outlet of the second evaporator are each provided with an electrictwo-way valve. According to the invention, the control method achieves the functions. When the system works normally, a refrigerant passes through the two evaporators, and the phase change material inthe phase change module absorbs cold energy for cold storage. When the system needs to be overhauled or has a fault, the phase change module releases the cooling capacity to the machine room, and a server does not need to be stopped. The system can effectively solve the problem of emergency cold accumulation, reduces the maintenance workload, can ensure continuous and stable operation of the airconditioning system of the machine room, further realizes efficient and safe operation of the data center, and reduces the operation cost and the space of the machine room.

Description

technical field [0001] The invention relates to a double evaporator machine room air conditioning system and a control method thereof, in particular to a double evaporator machine room air conditioner system with additional phase change modules and a control method thereof. Background technique [0002] In recent years, with the development of Internet +, the number of data centers and supercomputing centers has increased, and the loss of system failures has also increased. The refrigeration system is used to remove the heat generated by servers and other equipment to ensure a comfortable working thermal environment for servers and other equipment. Its reliability is the prerequisite for the normal operation of servers and other equipment. Therefore, the main goal of a data center cooling system is to minimize unknown downtime, maintain server reliability, and maximize energy efficiency. At present, the direct expansion air-cooled air-conditioning system is widely used in t...

AI Technical Summary

Problems solved by technology

At present, the direct expansion air-cooled air-conditioning system is widely used in the cooling of data centers, etc., but its continuous operation time is long, it cannot be shut down for maintenance and maintenance, and it needs to be matched with UPS to deal with power outages. extremely high reliability requirements

On the other hand, the area of ​​the computer room is very tight, and the emergency refrigeration system needs to occupy a large space in the computer room. Further, the initial investment of the emergency refrigeration system is high, and the wide application of small and medium-sized computer rooms is limited.

Images