建筑环境与能源应用工程专业英语7教程文件.ppt

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1、建筑环境与能源应用工程专业英语7RefrigerationandheatpumpHightemperatureLowtemperatureRefrigerationEnergyTHTLQHQLHightemperatureLowtemperatureHeatpumpEnergyTHTLQHQLSummerindooroutdoorWinteroutdoorindoorTopicone:Refrigerationtheoryandevaluate2vaporcompressionsystem34Indoo

2、rheatexchangerCompressorExpansionvalve四通换向阀Four-wayReversingValveOutdoorheatexchanger5EntropyAbsolutetemperature1234TheoreticalVaporCompressionRefrigerationCycle1-2Thecoldsaturatedvaporatstate1iscompressedisentropicallytothehightemperatureinthecycleatsta

3、te2.2-3Thecycleiscompletedbyanisothermalandisobaricheatrejectionorcondensingprocessfromstate2tostate3.3-4Saturatedliquidatstate3expandsisenthalpicalytothelowtemperatureandpressureofthecycleatstate4.4-1Heatisaddedisothermallyandisobaricallybyevaporatingth

4、eliquidphaserefrigerantfromstate4tostate1.EnthalpyPressure12346COP:CoefficientofPerformanceEER:EnergyEfficiencyRatioHSPF:HeatingSeasonalPerformanceFactorSEER:SeasonalEnergyEfficiencyRatio7absorptionsystemwaterlithiumbromideammoniawater89OzoneDepletion!反应

5、输入物反应产物反应催化剂Topictwo:AirpollutionbyRefrigerants10decreaseincreasetemperatureincreaseatmosphereearthGlobalWarming!Greenhousegases11121.RefrigerationandRefrigerationSystemsdefinition&classificationofRefrigerationSystems2.Refrigerants,CoolingMediums,andAbso

6、rbentsdefinition&standardrefrigerantdesignations3.ClassificationofRefrigerantsclassificationofrefrigerantsbasedonozonedepletion4.PhaseoutofCFCs,BFCs,HCFCs,andTheirBlendshistoryofthephaseoutsomealternativesTopicFour:Textlearningandkeywords13refrigeration制

7、冷refrigerationsystem制冷系统refrigerant制冷剂coolingmedium冷却介质vaporcompressionsystem蒸气压缩式系统absorptionsystem吸收式系统gasexpansionsystem气体膨胀式系统ozonedepletionpotential(ODP)臭氧消耗潜能globalwarmingpotential(GWP)全球变暖潜能absorbent吸收剂brine盐水hydrocarbon碳氢化合物halocarbon卤代烃phaseout逐

8、步停用或淘汰alternative替代物Hydrofluorocarbons(HFCs)氢氟烃Hydrochlorofluorocarbons(HCFCs)氢氯氟烃Chlorofluorocarbons(CFCs)氯氟烃Bromofluorocarbons(BFCs)Halons溴氟烃HC（Hydrocarbon）碳氢FC（Fluorocarbon）氟烃azeotropic共沸的nonazeotropic非共沸的TopicFive:Text