Method for detecting refrigerating energy efficiency ratio of air conditioner online and method for detecting refrigerating capacity of air conditioner online

Abstract

The present invention discloses a method for detecting the refrigerating energy efficiency ratio of an air conditioner online and a method for detecting the refrigerating capacity of the air conditioner online. The method for detecting the refrigerating energy efficiency ratio of the air conditioner online includes the following steps that: in the operation process of the air conditioner, real-time compressor frequency, real-time indoor temperature, real-time outdoor temperature, real-time internal unit rotation speed and real-time external unit rotation speed are obtained; a real-time core energy efficiency ratio corresponding to the real-time compressor frequency and the real-time outdoor temperature is determined according to a typical compressor frequency, a typical outdoor temperature, a typical core energy efficiency ratio and a typical relation expression; a real-time indoor temperature energy efficiency ratio correction factor is determined according to the real-time indoor temperature and rated indoor temperature, a real-time internal unit rotation speed energy efficiency ratio correction factor is determined according to real-time internal unit rotation speed and rated internal unit rotation speed, and a real-time external unit rotation speed energy efficiency correction factor is determined according to the real-time external unit rotation speed and rated external unit rotation speed; and a real-time refrigerating energy efficiency ratio is determined according to the real-time core energy efficiency ratio and the energy efficiency correction factors. With the methods of the invention adopted, the refrigerating energy efficiency ratio and refrigerating capacity of the air conditioner under different working conditions can be detected in real time.

Description

Technical field [0001] The invention belongs to the technical field of air conditioning performance parameter detection, and specifically relates to a method for on-line detection of air conditioning refrigeration energy efficiency ratio and cooling capacity. Background technique [0002] The air-conditioning refrigeration energy efficiency ratio is the ratio of the air-conditioning refrigeration capacity to the operating power. It is a parameter to measure the quality of the air-conditioning refrigeration performance. The higher the refrigeration energy efficiency ratio, the less the air-conditioning power consumption. [0003] In the prior art, the air conditioner refrigeration energy efficiency ratio is the nominal value marked on the nameplate of the air conditioner, which is the ratio calculated based on the rated cooling capacity and the rated power consumption in the rated state. However, in actual use, the air conditioner is affected by the use environment, and it is diffic...

AI Technical Summary

Problems solved by technology

However, in the actual use of the air conditioner, it is difficult to reach the rated working condition due to the influence of the use environment.

Therefore, the cooling energy efficiency ratio declared on the nameplate of the air conditioner can only serve as a reference in the actual use process, and cannot present the actual cooling performance in real time.

Since the real-time cooling energy efficiency ratio of the air conditioner cannot be obtained, the actual cooling capacity during the operation of the air conditioner cannot be obtained

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