water pumps with water cylinder for sale
1.Material of out shell: Galvanized-steel with painting, stainless steel, PU soft coat, aluminum-alloy.
2.Material of inner tank: Duplex stainless steel 2304/2205, SUS304, SUS316L are available.
3.Insulation: polyurethane resin foaming / PU soft coat.
4.Material of inner coils: Copper / stainless steel / wave stainless steel.
1. The solar collector absorbs solar energy and transit the heat to the tank through heating-liquid.
2. When the temperature of collector and tank bottom temperature difference reach to 8 degree, the circulating pump start running to take the solar heat to tank.
3. The tank heat exchanger coil will transfer the heat with outside cold water to reach customer's hot water using.
4. If there is no sunshine or not enough sunshine, it can start E-heater, heat pump unit or other auxiliary heating sources ensure enough hot water for users.