Method for adjusting air-conditioner refrigerating capacity through dry-wet bulb temperature allowance grading

Abstract

The invention discloses a method for adjusting the air-conditioner refrigerating capacity through dry-wet bulb temperature allowance grading. The method is used for performing fitting on the refrigerating capacity and energy efficiency ratio data of a room air conditioner under multiple groups of specific testing conditions, adopts an akaike information criterion (AIC) to respectively screen an optimal curved surface equation, solve an extreme value interval of two gradients and confirm a core interval (union of dry-wet bulb temperature allowance ranges in the extreme value intervals of the refrigerating capacity and energy efficiency ratio gradients ), performs three-level nonlinear division on the dry-wet bulb temperature allowance and further adjusts the air-conditioner energy efficiency ratio. The method can accurately control the performance of the room air conditioner, narrow a dry-wet bulb temperature allowance changing range and reduce the change rates of the refrigerating capacity and energy efficiency ratio.

Description

technical field [0001] The invention belongs to the field of building environment and energy application engineering, and relates to a method for adjusting the cooling capacity of an air conditioner through the grade division of dry and wet bulb temperature tolerances. Background technique [0002] The energy efficiency standard for room air conditioners is the earliest energy efficiency standard for electrical equipment formulated in my country. It has undergone three revisions. The formulation and revision of energy efficiency standards have followed the relevant norms of the United States, the European Union and Japan. The two revisions of the energy efficiency standards in 2000 and 2004 are mainly reflected in the increase of the allowable value of energy efficiency, while the current energy efficiency standards for room air conditioners, their energy efficiency grades are revised from the five-level energy efficiency of the original national standard GB12021.3-2004 to th...

AI Technical Summary

Problems solved by technology

However, the cooling capacity and energy efficiency ratio of room air conditioners within the allowable range of dry and wet bulb temperature, due to the difference in actual operating conditions, the measurement results of energy efficiency ratio have a certain probability of distortion, which may further lead to errors in the energy efficiency level of room air conditioners Division, further may lead to wrong actions to adjust the cooling capacity of the air conditioner, such as unnecessarily improving the frequency of the compressor and the speed of the fan, etc.

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