Real-time cold load determination method of air-conditioner room

Abstract

The invention relates to a real-time cold load determination method of an air-conditioner room. The method is as follows: on the basis of the heat balance process of a room system, determining a cold load model structure, measuring the actual conditions of real-time cold supply amount input of an air conditioner and room temperature response, identifying model parameters, establishing a real-time cold load model, and calculating real-time cold load in the air-conditioner room. By utilizing the real-time cold load determination method, precise and reliable real-time cold load requirement data can be provided for operation and control of the air conditioner, the problems that the heat-transfer mechanism modeling method and the prediction method need a large amount of priori knowledge and historical data and is difficult to cover dynamic influence factors of the load and the like are avoided, and the real-time cold load requirement of the air-conditioner room can be reflected in real time. The real-time cold load determination method is wide in application range and strong in real-time property, and can be widely applicable to the aspects of energy conservation control at the operating stage of the air conditioners and energy conservation modification of the air conditioners of old buildings and the like.

Description

technical field [0001] The invention relates to a method and system for centralized cooling of HVAC in civil buildings, in particular to a method for determining the real-time cooling load of an air-conditioning room required for energy-saving optimization control of air-conditioning operation. Background technique [0002] At present, the power consumption of civil buildings alone accounts for 22-24% of the country's total power generation, of which HVAC energy consumption accounts for about 50-60%, and this proportion is even higher in some megacities. According to Chongqing and Shanghai According to statistics, the electricity consumption of central air-conditioning has accounted for 23% and 31.1% of the city's total electricity consumption respectively. As a large power consumer, air conditioners should become the key targets of energy conservation and emission reduction. According to industry experts' prediction, central air conditioners still have at least 30% energy s...

AI Technical Summary

Problems solved by technology

This method needs to predict a large amount of historical data, and it is difficult to reflect random dynamic factors, which affects its accuracy and practicability

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