An experimental work on the effect of using new technique of thermal energy storage of phase change material on the performance of air conditioning unit

•A technique uses cold energy storage of PCM at night to raise AC efficiency at day.•Intially, air temperature exit from vertical PCM plates is smaller than horizontal.•The COP of the AC unit with PCM plates is greater than that without PCM plates.•Using PCMs decrease the condenser pressure and rais...

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