General layering diagnosis method targeted at problems in air-conditioning system of public building

Abstract

The invention relates to a general layering diagnosis method targeted at problems in an air-conditioning system of a public building. Detection and diagnosis are carried out layer by layer in terms ofan air-conditioning water system, an air-conditioning ventilation and water heat exchange system and an air-conditioning ventilation system to find out possible failure of the air-conditioning systemand provide a basis for subsequent adjustment and optimization of the air-conditioning system. Without being confined to separate diagnosis of a certain subsystem, the method focuses on overall analysis of air-conditioning failure. An important reference is offered to achieve all-round diagnosis of the problems in the air-conditioning system of the public building in practical engineering, wherein water system detection is regarded as the core step of this method. The diagnosis starting point and diagnosis steps of the invention are very clear, which can provide a general and effective reference for the diagnosis of air-conditioning systems of similar public buildings.

Description

technical field [0001] The invention relates to a fault diagnosis technology of an air-conditioning system, in particular to a hierarchical general diagnosis method for problems of an air-conditioning system of a public building. Background technique [0002] In the actual operation of the central air-conditioning system of public buildings, there are often problems of poor comfort in the thermal environment such as overheating in summer or overcooling in winter in the end rooms. How to quickly diagnose the causes of these problems in air conditioning systems has always been an engineering problem. Most of the existing related research focuses on the individual diagnosis of a certain subsystem in the air conditioning system, such as the water system, or the wind system, or the air and water heat exchange system. Zhao Fang of the China Academy of Space Technology proposed a water system dynamic balance diagnosis method to judge whether the water system is out of balance and ...

AI Technical Summary

Problems solved by technology

However, in the air conditioning system, the water system, the wind system and the terminal thermal environment are closely related to each other. It is difficult to give an overall analysis of the air conditioning system failure only from a single subsystem to diagnose the problem of the air conditioning system of a public building.

Images