Industrial, residential and commercial noise levels are to be maintained for acoustic comfort living conditions. Sound annoyance is a sensation of discontentment linked with any driving force from machines or circumstance. It certain that, can harm human hearing capacity brain neuron cells. Novelty this study was the design window air conditioner modified heat exchanger coils phase change mater...

*1 Air-Conditioner Designing & Engineering Department, Air-Conditioning & Refrigeration Division *2 Manager, Air-Conditioner Designing & Engineering Department, Air-Conditioning & Refrigeration Division *3 Chief Staff Manager, Sales Department, Air-Conditioning & Refrigeration Division *4 Professor, Department of Electrical, Electronic and Computer Engineering, Faculty of Engineering, Gifu Univ...

In the air-conditioner’s market, the users are particularly sensitive to the vibration and noise of the machine. Thus, the enterprise not only the air-conditioner manufactures but also the compressor manufactures cast about how to develop and design more quietly machine. In this paper, we analyzed various kinds of factors that influenced the vibration and noise of air-conditioner, and we give t...

Based on reactive power-voltage characteristics analysis of air conditioners, the effects of air conditioner load on voltage stability of an urban power system are investigated in this paper. Indexes for evaluating bus voltage security are proposed, and static voltage stability analysis method is adopted. The computational analysis of a real urban power system in East China shows that air condi...

There are two kinds of dual split type air-conditioner. One is of using two compressors for two indoor units; the other has only one compressor for two indoor units. The EER and refrigerating capacity of the former kind are just the same as the single split type's. But to one compressor dual split type system, there are two working ways: 1. compressor and both two indoor units operating, and 2....

The refrigerant release technology relieves even eliminates the over-compression loss of scroll compressor by bypassing the refrigerant in the compression chamber to the suction pipe under small system pressure ratio conditions. Because the room air conditioner works in mild conditions at most of the time, its seasonal energy performance is expected to be effectively improved by the refrigerant...

In a 10-ton capacity pilot plant solar liquid desiccant air conditioner (LDAC) developed, dehumidification of the outside air is achieved through a honeycomb packed-bed heat and mass exchanger, using lithium chloride solution as the desiccant. The dry air obtained from the dehumidification process is evaporative cooled inside a cooling pad and directed into the conditioned space. The dilute sol...

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...