Copper coil pre-heating solar water heater system

Copper coil pre-heating solar water heater system Materials of water heater A)Innertank:SUS304foodgradestainlesssteel B)Outertank:coatedsteelsheet C)Bracket:thickness:1.5mmcolorsteelwithelectrostaticplasticcoating D)Copper coil inside the water tank *Solarvacuumtube A)Size:58mmx1800mm B)Qty:15/20/25/30pcs C)Hailresistance:Diameter25mm *Insulationlayer: A)Material:Importedpolyurethane B)Thickness:50mm(formaximum72hoursofconservation) C)Density:42kgs/m3 *Capacity:150,200,250,300liters *Tankdiameter:460mm *Max.Pressurebearing:0.3MPa *Certificate:ISO9001/CEcertificate *3yearsinternationalqualityguarantee *Packaging:Vacuumtube/carton,watertank/carton,bracket/carton Advantages: 1.Acoppercoilisinstalledinsidethetankastheheatexchanger; 2.Whenwaterflowsintothecoppercoil,itabsorbsheatfromthewaterinthetank,therefore;thewatertankisjustaheatstorage; Features: 1.Canbeusedatanytimetowarmthecoldwater.Itcanovercometheshortcomingoftraditionalsolarwaterheater, suchasslowheatingrate,longwaitingtime. 2.Highefficiency:Aspecialheatexchangingmodeisadoptedtoavoidmixedeffect,socoldwatercanbeheatedatanymoment. 3.Waterpressureissameastapwater;itcanbeconnecteddirectlytocitytapwatersystem. 4.Greenandeconomical.Nopollutioninworking,nocostforhotwater. 5.Easyoperation.Automaticwatersupply,youcantakeiteasyandenjoygoodtime. 6.Fashionable.Theappearanceisniceandattractiveandcanfitintothesurroundingsproperly. Relevant data of pre-heating solar water heater system: Model Area(m2) Vacuumtube Volume(L) Grossweight(kg) 20GP/40GP/40HC loadingQty(sets) Ø(mm) Length(mm) Qty(pcs) WB-PH-58/1800-15 1.97 58 1800 15 150 46 48/100/116 WB-PH-58/1800-20 3.70 58 1800 20 200 71 32/68/72 WB-PH-58/1800-25 4.75 58 1800 25 250 81 25/52/62 WB-PH-58/1800-30 5.60 58 1800 30 300 98 22/46/52