1A psychrometric chart shows properties of:ARefrigerantsBMoist airCFuelsDSteamView AnswerDiscussWorkspaceReportSaveEasy
2The compressor in a refrigeration cycle:ACondenses the liquidBLowers pressureCAbsorbs heat from the spaceDRaises the pressure and temperature of refrigerant vapourView AnswerDiscussWorkspaceReportSaveEasy
3The coefficient of performance (COP) of a refrigerator is:ARefrigerating effect / work inputBAlways less than 1CWork input / refrigerating effectDHeat rejected / workView AnswerDiscussWorkspaceReportSaveEasy
4Which component of a vapour-compression system lowers pressure?ACondenserBCompressorCExpansion valveDEvaporatorView AnswerDiscussWorkspaceReportSaveEasy
5COP of a heat pump is:AHeat delivered ÷ work inputBHeat absorbed ÷ heat rejectedCWork input ÷ heatDAlways less than 1View AnswerDiscussWorkspaceReportSaveEasy