Solar water heater with copper coil

Thermo siphon solar collectors provides mains pressure pre-heating via a high efficiency copper coil heat exchanger located within the solar collector tank. The way in which the Mains Pressure solar collector heats water is the same as the Non pressure solar collector. Rather than using the water in the tank directly, as the Non pressure does, the type uses a 45óª60 copper coil heat exchanger inside the tank which provides more than 1.2m2 of heat transfer area. When water flows though the coil it absorbs heat from the water inside the solar collector tank. The solar collector tank is therefore a thermal store. One advantage of this system is that almost no water is introduced into the tank apart from occasional topping up), so corrosion and scale buildup are almost totally eliminated. Tanks are designed for low to medium pressure applications using a gravity feed tank or pressure reduction valve. Direct connection to mains pressure water supply is not permitted. MODEL Lighting (m¬˜) Vacuum Tube Cubage (L) GW (kg) Qty.per20úº/40úº Container diameter Length No. LQ470-1800/58-20 2.99 ¼¦58mm 1800mm 20 165 120 37/74 LQ470-1800/58-30 4.42 ¼¦58mm 1800mm 30 250 160 25/51. MODEL Lighting (m¬˜) Vacuum Tube Cubage (L) GW (kg) Qty.per20úº/40úº Container diameter Length No. LQ470-H1800/58-20 2.99 ¼¦58mm 1800mm 20 165 120 36/73 LQ470-H1800/58-30 4.42 ¼¦58mm 1800mm 30 250 160 24/49.