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...

Measurements on R600a refrigerators have shown electricity savings over R134a and R12 up to 20%. We propose new parameters which are functions of well known refrigerant properties. These parameters show that R600a has half the leakage, pressure loss and condenser pressure and double the heat transfer coefficient of R12 and R134a explaining the measurements. Use of R600a in small heat pumps and ...

This review paper presents the work of various researches on the performance of capillary tube ,used in air conditioners with various refrigerants. Research carried out by different authors uses different type of capillary tubes (straight, twisted, coiled) in different length and diameter. they determined various parameters like coefficient of performance (COP),cooling capacity, energy efficien...

The widespread rollout of air conditioning has resulted in massive positive impacts on human health in both developing and developed countries over the past century. A warming world will further increase demand for cooling in climates both through increased operation of existing air conditioners and the adoption of new ones. This paper provides an empirical approach to separately quantifying th...

This paper presents the detailed design and analysis of an asymmetric fin tube condenser. And the heat transfer performance of the asymmetric fin tube condenser is simulated with the fluent software. Based on the simulation results, an optimal model of the asymmetric-finned tube condenser is designed. The actual model is experimentally studied on air conditioners and contrasted with the symmetr...

Residential air conditioning is responsible for a substantial amount of peak electrical demand and energy consumption throughout most of the United States. Coil fouling, the deposition of indoor dusts and other particulate matter on evaporator heat exchangers, increases system pressure drop and, correspondingly, decreases system air flow and air conditioner performance. In this paper, we apply ...

In this paper the results of both modeling and testing a representative 3-ton air-to-air heat pump running with the baseline refrigerant (HCFC-22) and zero ODP alternative refrigerants will be presented. Alternative refrigerant simulation runs are made with two pure fluids (HFC-134a and HFC-152a) and an azeotropicmixture (60/40wt%) ofHFC-32 and HFC125 (Allied-Signal Inc. U.S. Patent 4,978,467)....

Despite the known difficulties many people with MS have with high ambient temperatures, there are no reported studies of air conditioning use and MS. This study systematically examined air conditioner use by Australians with MS. A short survey was sent to all participants in the Australian MS Longitudinal Study cohort with a response rate of 76% (n = 2,385). Questions included hours of air-cond...