sunshine flat panel solar water heater
原价: 1,00 USD
Echo lu
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基本信息
sunshine flat panel solar water heater Flatplatecollectorsarethemostcommonsolarthermalcollectors.Theyaremostappropriateforlowtemperatureapplications(under140°F;60°C),suchasdomestichotwaterandspaceheating. Aflatplatesolarthermalcollectorusuallyconsistsofcoppertubesfittedtoaflatabsorberplate.Themostcommonconfigurationisaseriesofparalleltubesconnectedateachendbytwopipes,theinletandoutletmanifolds.Theflatplateassemblyiscontainedwithinaninsulatedbox,andcoveredwithlow-iron,temperedglass.(Seethediagramonpage45.) Themostefficientcollectordesignmaximizessolarheatgain,minimizesheatlosses,andprovidesforthemostefficientheattransferfromabsorberplatetotube.Operatingtemperaturesupto250°F(121°C)areobtainable,althoughneithercommonnordesirable.Remember,youwanthotwater,notsteam. SelectiveSurface Aselectivesurface,oftenreferredtoas"blackchrome"isfarmoreefficientthanablackpaintedabsorbersurface.Althoughablacksurfaceismostefficientatabsorbingsolarradiationandconvertingittoheat,itisalsohighlyefficientatre-radiatinglongwaveinfraredheatbackout.Theselossesreducecollectorefficiency. Ahighlypolishedchromesurfacewouldre-radiatetheleastinfraredheatenergy,butofcoursenotbeingblack,itwouldabsorbverylittle.Aselectivesurfacecombinesthebestofbothworlds;highabsorptancewithlowemittance.Soundhigh-tech?It'sbeenaroundsincethe1950s,andisusedonmostcommerciallyavailableflatplatecollectors.Itsperformanceisworththemarginaladditionalcost,particularlyincoldclimateswhereradiantheatlossisgreatest.
交货条款及包装
Packaging Detail: International standard carton packaging Delivery Detail: 15 day
端口: shanghai
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