Method for online detection of air-conditioning refrigeration energy efficiency ratio and cooling capacity

Abstract

An online detection method for a refrigeration energy efficiency ratio and a refrigeration capacity of an air conditioner. The online detection method for a refrigeration energy efficiency ratio comprises: during the operational process of an air conditioner, acquiring a real-time compressor frequency, a real-time indoor temperature, a real-time outdoor temperature, a real-time inner machine rotation speed and a real-time outer machine rotation speed; determining a real-time core energy efficiency ratio corresponding to the real-time compressor frequency and the real-time indoor temperature according to a typical compressor frequency, a typical outdoor temperature, a typical core energy efficiency ratio and a typical relational expression; determining a real-time indoor temperature energy efficiency ratio correction factor according to the real-time indoor temperature and a rated indoor temperature, determining a real-time inner machine rotation speed energy efficiency ratio correction factor according to the real-time inner machine rotation speed and a rated inner machine rotation speed, and determining a real-time outer machine rotation speed energy efficiency ratio correction factor according to the real-time outer machine rotation speed and a rated outer machine rotation speed; and determining a real-time refrigeration energy efficiency ratio according to the real-time core energy efficiency ratio and each energy efficiency ratio correction factor. Thus, the real-time detection of a refrigeration energy efficiency ratio and a refrigeration capacity under different operational working conditions of an air conditioner can be achieved.

Description

technical field [0001] The invention belongs to the technical field of air conditioner performance parameter detection, and in particular relates to a method for online detection of air conditioner refrigeration energy efficiency ratio and cooling capacity. Background technique [0002] The energy efficiency ratio of the air conditioner is the ratio of the cooling capacity of the air conditioner to the operating power. It is a parameter to measure the cooling performance of the air conditioner. [0003] In the prior art, the cooling energy efficiency ratio of the air conditioner is the nominal value marked on the nameplate of the air conditioner, which is the ratio calculated according to the rated cooling capacity and the rated power consumption under rated conditions. 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...

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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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