Solar Water Heating

Pre-Heated Vacuum Tube Solar Water Heater With Copper Coil

Working Principle:

Vacuum tubes absorb the solar radiation, and convert it into thermal energy, and then the thermo energy heats up the water in vacuum tubes. The heated water floats up to top of tank, and the cold water in tank goes down to fill the vacuum tube. The water in vacuum tube and water tank is finally completely heated by this circulation. The copper coil is heated by the water in tank, and then it heats up the water flows through it.

Basic Structure of Complete Set: Basic Structure of Water Tank: Photos and Specifications:

Pre-Heated Vacuum Tube Solar Water Heater With Copper Coil

Models Vacuum Tube Aperture Area (EN) Copper Coil Tank / Total Volume Dia. of Inner / Outer Tank
Size Number Distance Inner Surface Volume
RPA 58-1800-20 Dia.: 58 mm
L: 1800 mm
20 pcs 80 mm 1.89 m2 0.653 m2 1.698 L 170 / 230 L 360 mm
/
470 mm
RPA 58-1800-24 24 pcs 2.26 m2 0.784 m2 2.038 L 200 / 275 L
RPA 58-1800-30 30 pcs 2.83 m2 0.905 m2 3.256 L 250 / 345 L
RPA 58-1800-36 36 pcs 3.39 m2 1.086 m2 3.907 L 300 / 410 L
Optional Accessories:>
Electric Heater, Magnesium Rod, Assistant Tank, Solar Controller.
Tube number and tank volume can be adjusted according to customers’ requirements.

Materials
RPA
Outer Tank Aluminum-Zinc Steel, 0.4 mm.
Inner Tank Stainless Steel 304/2B, 0.5 mm.
Insulation Polyurethane Foam, 55 mm
Vacuum Tube AL-N-AL or SS-CU-ALN/ALN 58-1800
Copper Coil RPA 58-1800-20: Dia. 12mm, thickness 0.8mm, length 20m.
RPA 58-1800-24: Dia. 12mm, thickness 0.8mm, length 24m.
RPA 58-1800-30: Dia. 16mm, thickness 0.8mm, length 20m.
RPA 58-1800-36: Dia. 16mm, thickness 0.8mm, length 24m.
Frame & Stand parts Galvanized Steel with Powder Coating, 1.5 mm thick.
Materials and sizes can be adjusted according to customers’ requirements.