Abstract: The performance of indoor unit of air conditioner is the comprehensive influence result of multiple design parameters. This paper selects multiple parameters that affect the performance of the indoor unit of the air conditioner, and using orthogonal analysis for experimental design. After designing multiple parameters levels, the orthogonal table obtained from the experimental design was used to determine the experimental protocol and to conduct experimental tests. Finally, by analyzing the influence of each parameter and the interaction between each parameter to the performance of the indoor unit of air conditioner, the influence of each parameter and the interaction to the air conditioner is obtained, as well as the optimal combination of parameters.

Key words: Indoor unit of air-conditioner, Orthogonal analysis, Experimental design, Parameter combination, Performance parameter