ETG Solar Water Heater (Stainless Steel Coil)

Eurotech Solar Water Heater (Stainless Steel Coil)

Thermal tank

• pressurized cylindrical water tank made of galvanized sheet and insulated with anti-rust and corrosion substance.

• The tank is equipped with a 316L stainless coi (heat exchanger) with a length of 25 meters inside the tank.

• The tank is insulated with a thick thermal insulation layer of environmentally friendly polyurethane (40 kg / m3) to maintain the water temperature inside the tank.

• The outer shell of the tank is made of galvanized iron sheet coated with an electrostatic layer that is resistant to sun radiation.

• All tank and collectors holes are screw threads 4/3 inch.

• The Conduits are thermally insulated.

• The tank is equipped with an electric heating element and a thermostat to work in the absence of the sun.

• The solar heater contains a safety valve and a vent to exit the excess pressure and also contains a water non-return.

• The tank does not need a magnesium electrode.

Solar heater holder

• Manufactured from steel sectors coated with an electrostatic protection layer.

Solar collectors

• Flat Plate Collector cells

• The solar collector contains parallel lifting pipes of red copper 10-15 mm wear-resistant and high thermal conductivity connected to each other by horizontal copper header pipes.

• Endothermic surface – red copper or aluminum strips and tubes coated in the blue Selective-Coating with a high absorption coefficient of 93-97% (blue cells).

• The outer frame of the extruded aluminum sections.

• Thermal insulation 50 mm thick glass wool.

• The outer surface of the cell is 4 mm thick low iron oxide glass (for blue cells)

• Covered with winding thermal glass, not smooth to get the highest level of solar radiation.

• The solar radiation transmittance coefficient of glass is 95%.

• All welds are laser or ultrasonic.

• The solar heater holds the certificate of solar keymark.

Pipes for connection between the tank and the cell

Flexible stainless steel tubes, diameter 25 mm, insulated with rubber foam, thickness 9 mm with protection of aluminum adhesive tape against weather conditions.

Heater accessories

• Brass relief and safety valve at the hot water outlet.

• Non-return and safety brass valve at cold water inlet with a diameter of ¾ inch.

• Ball valve ¾ inch below the tank for washing the system from dust and dirt.

• Electric heating element and thermostat to work in the absence of the sun.

  

Operating instructions

The hot water used by the customer is the water that passes inside the heat exchanger (stainless steel coil), so the water used is healthy (potable) water suitable for drinking and other uses. The thermal liquid in the tank is a heating medium to heat the heat exchanger and in turn it heats the water that goes through inside as the length of the heat exchanger is 25 meters, then the thermal liquid is heated inside the solar cells and collected inside the tank, where the tank is filled with a hot thermal liquid surrounding the heat exchanger, which in turn heats the water that passes through.

Advantages of Stainless Steel Coil:

• The solar heater does not need a magnesium column.

• The solar heater maintains temperatures for more than 72 hours.

• Provides general spare parts with cheap licenses.

• Highly trained maintenance crews provide.

• Stainless steel coil which the water passes through is healthy, so that the water is valid to drink.

• The stainless steel coil is resistant to rust, TDS and corrosion by nature so the tank is not in any need to a magnesium anode, that how you can save the costs of maintenance .While the other tanks depending on the magnesium anode need to replace it every 8-12 months.

• This type of solar Heaters work on electric energy-saving technology.