A control method and device for linkage between internal and external units of a precision air conditioner

Abstract

The present invention provides a control method for the linkage of internal and external units of a precision air conditioner, which is characterized in that it includes: obtaining the target cooling capacity Q of the compressor n , The target power of the compressor W 1 , The target power of the condenser W 2 , The target power of the evaporator W 3 , according to the energy efficiency ratio function COP of the air conditioner, in Q n (±a%+1), respectively, for the target operating frequency f n , the condensation temperature T cn and the evaporation temperature T en Optimizing within a specific range to obtain the target operating frequency f under the condition that the COP value is the maximum value n d. Target condensation temperature T cn d and the target evaporation temperature T en d, said a is a preset natural number; adjust the speed N of the evaporator according to the target temperature difference between the inlet and outlet of the evaporator, and control the compressor to operate at the target operating frequency f n d operation, and according to the target condensation temperature T of the condenser cn d Adjust the speed M of the condenser, and the target temperature difference between the inlet and outlet of the evaporator is Δt 2 -(T en d‑T en ).

Description

technical field [0001] The invention relates to the technical field of electronic communication, in particular to a control method and device for the linkage of internal and external units of a precision air conditioner. Background technique [0002] IT equipment in the data center has high power density, high heat load, and high requirements on temperature and humidity. A dedicated computer room precision air-conditioning system is required to ensure the stable operation of the data center. According to the energy consumption analysis of the data center, the precision air-conditioning system is the largest energy-consuming system in the data center except IT equipment, and its power consumption accounts for 35%-40% of the total power consumption of the data center. Improving the COP of the precision air conditioning system is the key to energy saving in the data center. COP is defined as the ratio of heating capacity (W) to input power (W), that is, the energy efficiency ra...

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a precision air-conditioning internal and external unit linkage control method and device, which can solve the problem that the control strategy of the existing precision air-conditioning system lacks the COP of the precision air-conditioning system due to the independent control of the evaporator and the condenser. Consider and optimize, and there are technical problems of slow regulation speed and high delay

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