To solve the problem of fault prediction and diagnosis household air conditioning, an improved Bayesian network (BN) model is proposed. Firstly, orthogonal defect classification (ODC) used to make statistics analysis conditioning data, structure BN built based on results. Then, genetic algorithm (GA) optimize conditional probability nodes determine parameters. Finally, cooling heating failure d...

In this study, the indoor air quality and thermal environment of a university facility were analyzed when an conditioner was operated natural ventilation provided; most effective method also evaluated. The research conditions established by adjusting temperature conditioner, frequency window openings every hour. area around windows that is open for easily affected outdoor humidity. However, sin...

Fred Keller Split Systems Director The National Appliance Energy Conservation Act has established a minimum efficiency of 10 SEER for residential split system air conditioners and heat pumps. Approximately 50% of residential split system air conditioners are sold as replacements for units having much lower SEER levels, typically 5-9 Btu/W·h. This investigation assessed the detrimental affects t...

Visualization of heat flow often uses complex and challenging programs such as Matlab Ansys Fluent with expensive licenses, the operation is also difficult. This study aims to demonstrate phenomenon convection transfer in a simple way. The fairly difficult, process can cause misconceptions students. An appropriate easy-to-use method needed preparing for classroom learning. was conducted review ...

The performance of air conditioner and the reliability of compressor could be reduced, if the refrigerant gas is discharged from compressor with excessive lubricating oil. Thus, the study of the reduction of the oil circulation rate in the compressor is required to resolve the problem. In this paper, five feasible approaches to decrease the oil circulation rate were confirmed by experiment. the...

Technology advances allow us to design smart home system for the purpose to achieve high demand on occupants’ comfort. In this research, we focus on the temperature control to build a thermal comfort controller for the existing hybrid temperature control (HTC) system, which is based on the cyber-physical system (CPS) approach. By using air-conditioner, window and curtain, our proposed controlle...