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1、IIIPartTHERMALCOMFORT15ChapterPrinciplesofThermalComfortThroughouthistory,peoplehavecopedwithcoldingsystemcomponentsontheinteriordesign,andonweatherbyputtingonmoreclothes,findingawarmthecomfortoftheclient.place,andheatingtheirimmediatesurroundingswithOurbodiesarealwaysgivingoffheat.Wev
2、aryin-whateverenergysourceswereavailable.Overtime,ourdividuallyintheamountofheatweproduceandretaintoleranceforarangeofindoortemperaturesthatinourbodies.Thecomplexphysicalandchemicalpro-changeswiththeseasonshasbecomemorelimited.Un-cessesinvolvedinthemaintenanceoflifearecalledourtilthe19
3、20s,mostpeoplepreferredindoortempera-metabolism.Therateatwhichwegenerateheatiscalledturesaround20°C(68°F)inwinter,andtoleratedhigherourmetabolicrate.Somepeopleperspiremorethantemperaturesduringthesummer.Peoplewouldsavetheothers,andperspirationhelpscarryheatawayfromthecostofexpensiveene
4、rgyinwinterbywearingwarmerbody.Theamountofinsulatingfatunderourskin,andclothes.Between1920and1970,energyforheatingandtheratioofskinsurfaceareatobodyvolumealsomakecoolingbecamelessexpensive,andpeopledevelopedaadifference;thinnerpeoplestaycoolerthanfatterpeo-preferenceforyear-roundindoor
5、temperaturesintheple.Certainareasofourbodiesaremoresensitivetorangeof22°Cto25.5°C(72°F–78°F).heatandcoldthanothers.Ourfingertips,nose,andel-Eachofushasourownpreferredtemperaturethatbowshavethemostheatreceptors.Ourupperlip,nose,weconsidercomfortable.Mostpeople’scomfortzonechin,chest,and
6、fingersaretheareasmostsensitivetotendstobenarrow,rangingfrom18°Cto24°C(65°Fcold.Thetemperatureinthefingertipsisusuallyintheto76°F)duringthewinter.Ourbody’sinternalheatinghightwentiesindegreesCelsius(higheightiesinde-systemslowsdownwhenwearelessactive,andweex-greesFahrenheit).pectthebui
7、lding’sheatingsystemtomakeupthedif-Whenweareabletogiveoffheatandmoistureatference.Thedesignoftheheatingsystemandthequal-aratethatmaintainsastable,normalbodytemperature,ityoftheheatingequipmentaremajorelementsinweachieveastateofthermalcomfort.Thermalcomfortkeepingthebuildingcomfortabl
