The R22 alternatives R32/125/152a and R290 and their mixtures have been analyzed and evaluated in a room air conditioner. The cooling capacities, energy efficiencies, compressor-discharge temperatures, and pressures of alternatives have been compared with R22. R32/125/152a mixtures were found to...

Energy shortage is exacerbated by energy wastage and low efficiency, so energy efficiency has become a popular research topic. However, in most studies, the inputs and outputs of energy efficiency are selected through qualitative analysis and literature review, the rationality is not convincing....