flat solar collector: 1.high hot water produced 2.use heat tube for ... no blasting etc.4. Free of charge in using the solar energy to get the hot water, very economy.5. Operated ... supplying.9. You can even use the heat of the Solar Water Heater to cook, make hot water drink, wash ... dishes etc, to save much more electric and fuel.1.Flat collectorModelSize(mm)Material of coreLoading 20"/40" pcsMXE-2000/ ...