家庭用エアコンにおける省電力サイクル加熱除湿運転時の冷媒流動音低減に関する研究

概要

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In this study we investigated ways to reduce the noise caused by refrigerant flow during the cycleheating dehumidification operation. In this operation, the indoor heat exchanger is divided into a condensing part and an evaporating part by a dehumidification valve which is located between these two heat exchangers. The noise source is from the two phase flow passing through this valve. To reduce electric power consumption it is effective to reduce the compressor input power, that is lower the rotational speed of the compressor. At first, we examined the relationship between the kinetic energy of refrigerant flow and noise, and found a linear relationship between these values. It means that reducing the flow rate is important for reducing the noise. Then, we developed a new valve that has a smaller opening with a notch type throttle. We achieved electric power and noise reduction for the dehumidification operation by using this new vaelve under a reduced flow rate.
一般社団法人日本機械学会の論文
2000-01-25