Method for measuring refrigeration capacity of air conditioner based on BP neural network fitting model

Abstract

The invention belongs to the technical field and discloses a method for measuring a refrigeration capacity of an air conditioner based on a BP neural network fitting method. The method comprises the steps that data at an air return hole and an air feeding hole of an indoor unit of the air conditioner is collected and integrated; indexes such as air enthalpy values at the air return hole and the air feeding hole of the indoor unit of the air conditioner are computed; the actual refrigeration capacity of the air conditioner is computed based on an air enthalpy value method; and steps such as detection of the actual refrigeration capacity based on the BP neural network fitting model are carried out. The method disclosed by the invention has the beneficial effects that the refrigeration capacity of the air conditioner can be detected without any dismounting of the air conditioner and without use of an expensive enthalpy difference lab; in addition, in comparison with other modeling algorithms, experimental devices needed are simple, and more accurate and controllable detection results can be obtained; and the method and results are reliable.

Description

technical field [0001] The invention belongs to the related technical field of air conditioner refrigerator test, more specifically, relate to a kind of air conditioner cooling capacity detection method based on BP neural network fitting model. Background technique [0002] One of the important indicators of various air conditioners is the cooling capacity. The so-called cooling capacity refers to the total amount of heat removed from a closed space, room or area per unit time when the air conditioner is in cooling operation. The cooling capacity marked on the nameplate of each factory-made air conditioner is in accordance with national standards, and the actual cooling capacity of the air conditioner changes with the actual use environment and working conditions, and is not equal to the value on the nameplate in actual work. Rated cooling capacity. [0003] The traditional air enthalpy method is commonly used in this field to measure the refrigerating capacity of an air c...

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Problems solved by technology

[0005] However, further studies have shown that the above-mentioned existing technologies still have the following defects or deficiencies: First, these cooling capacity detection methods using model algorithms only provide theoretical feasibility, but do not provide specific information on practical applications. The measurement process, especially the key indicators, gives in-depth research and analysis; secondly, they are more focused on the control of the refrigeration process, but there are deficiencies in the accuracy of real-time testing of actual cooling capacity data, and the models of the prior art Low robustness, not well adapted to the actual environment

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