Specification data of solar flat plate collector: Gross area: 2.25m2 Efficiency area: 1.91m2 Dimensions: 2,080 x 1,080 x 100mm Gross weight: 53±3kg Transparent cover: Number of cover: 1 piece Cover material: common glass, tempered and low iron tempered glass Cover thickness: 4mm Cover transmission: 89 to 91.4% Dimensions: 1,980 x 980mm Absorber: Material: red copper Surface treatment: galvanized chromium coating Construction type: fin and tube (ultrasonic welding) Dimensions: 1,840 x 956mm Header material: copper TP2 Header tube size: 25 x 1,060 x 0.6mm/2 pieces Rise material: copper TP2 Rise tube size: 12 x 1,886 x 0.5mm/7 pieces Fill capacity: 1.8L Including header pipe Operating principle of solar central hot water system project: Chill water goes into hot water storage tank via chill water supply
system When set water level is reached, chill water supply system stops
operating Chill water in hot water storage tank is reinforced into heat
collector array via circulation-forcing water pump, where it is
heated under solar radiation and increases in temperature When the difference between water temperature in upper circulator
of heat collectors and that at the bottom of hot water storage tank
reaches set value, circulation-forcing pump is started and brings
chill water from the tank to heat collector array while taking hot
water in heat collector array back to hot water storage tank When said difference equals or drops below set value,
circulation-forcing pump stops operating Chill water in heat collectors continues to be heated under solar
radiation Circulation in this way causes water temperature in hot water
storage tank to rise time and again