A method for calculating the power consumption of cold storage equipment in central air-conditioning system

Abstract

The invention discloses a method for calculating the electricity consumption of a cold storage device of a central air-conditioning system. The method is characterized in that according to the method,independent electricity meters are installed on a compressor and a chilled water pump of the central air-conditioning system, a main controller of the central air-conditioning system is connected with a server of a local weather bureau, the weather temperature change situations of the Nth day (the current day) to the (N+4)th day of the server of the local weather bureau are read and calculated, the optimal electricity consumption of the cold storage device on the (N+1)th day is finally calculated through the combination with the electricity consumption of the compressor and the chilled waterpump of the central air-conditioning system, and therefore the cooling capacity of the cold storage device is controlled, calculation is easy, and the electricity consumption of the cold storage device of a central air conditioner can be effectively lowered.

Description

Technical field [0001] The invention relates to a central air-conditioning system, in particular to a method for calculating the power consumption of cold storage equipment of the central air-conditioning system. Background technique [0002] According to my country's peak and valley electricity price policy (peak high price, low valley price), the compressors and chilled water pumps of current central air conditioners often start to produce cold storage capacity during the night (lowest price) of the day until the cold storage device is full The cold storage capacity is then released during the daytime (peak high price) of the next day to provide part or all of the cooling demand, which can stagger the peak power consumption and save electricity. If the weather and temperature change of the next day is not much different from the temperature change of the day, all the cold storage capacity can be used for cooling. If the weather temperature of the next day changes significantly w...

AI Technical Summary

Problems solved by technology

If the weather temperature change of the next day is not much different from the temperature change of the day, all the cold storage capacity can be used for cooling. A small amount of cold storage capacity is needed for cooling, but because the central air conditioner will always store the cold storage capacity of the cold storage device to full capacity, this will cause excess cold storage capacity in the cold storage device when the temperature drops the next day, resulting in unnecessary waste, which also leads to an increase in electricity consumption