Machine room air conditioner low-temperature starting control method, device and equipment and storage medium

Abstract

The invention discloses a machine room air conditioner low-temperature starting control method, device and equipment and a storage medium, and relates to the technical field of air conditioner refrigeration. The method comprises the steps that when the collected compressor suction pressure is not smaller than the liquid storage tank pressure, a heater arranged on a liquid storage tank is started, and according to the size relation between the liquid storage tank pressure and the compressor suction pressure, the heater is started; performing return difference adjustment on the heating power of the heater; when the pressure of the heated liquid storage tank is higher than the suction pressure of the compressor, starting the machine room air conditioner, continuously starting the heater, and keeping the pressure of the liquid storage tank higher than the suction pressure of the compressor; dynamically controlling the opening degree of the electronic expansion valve based on the set suction superheat degree; when the pressure of the condenser is higher than that of the liquid storage tank, the heater is closed, and the machine room air conditioner enters a normal operation mode. Normal starting and operation of the machine room air conditioner in the low-temperature environment can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of air-conditioning and refrigeration, in particular to a method, device, equipment and storage medium for controlling low-temperature start-up of an air-conditioner in a computer room. Background technique [0002] The heat dissipation problem of multiple servers needs to be solved in the data center computer room. The standard stipulates that the indoor temperature of the data center computer room should be between 18 and 27°C. If the temperature of the computer room is high, it will seriously affect the reliable operation of the server, which will cause the server to go down and cause huge economic losses to the operator. [0003] The air conditioner in the computer room is required to be able to cool and run 24 hours a day throughout the year, and the coldest temperature in some areas is around -45°C. The computer room air conditioner with the standard configuration will fail to start when the applicati...

AI Technical Summary

Problems solved by technology

[0005] At present, the low-temperature components are mostly placed in the indoor unit of the air conditioner in the computer room, and its floor area is about 1 / 8 of the indoor unit, which not only increases the overall volume of the air conditioner indoor unit, but also affects the airflow organization inside the indoor unit and weakens the evaporator replacement. heat capacity

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