E-Solar range of split solar water heaters are divided into two different models -SPOL (direct, open loop) and SPCL (indirect, closed loop) systems. Each model can be installed with active (pumped) or passive  (thermosiphon) water circulations.

SPCL SERIES

     Split, pressurized  open loop  (direct)  active solar water heating systems  with main pressure 4-8 bar

     Split, pressurized closed loop ( indirect) active solar water heating systems with main pressure 4-8 bar

Features/Specifications SPCL

Water tanks:

• Water tank capacity: 100 -600L

• Inner tank material: 1,2 - 1,8 mm  food grade SUS304  stainless steel welded by automatic argon machine.

• Outer tank material: 0,6 mm thick s/steel  or galvanized & powder coated steel plate.

• Superior heat preservation ensured by 60mm insulation layer (high density polyurethane foam).

• No copper coil (heat exchanger) inside the tank.

• Back up electric element and safety valve includes.

Collectors:

• Copper heat pipes for rapid heat transfer.

• Corrosion resistant silver brazed copper header.

• Reliable and efficient with twin-glass solar tubes.

• Absorption rate: =94%, thermal radiation rate: 6% (100⁰C).

•  Hail resistant vacuum tubes. (up to 40mm hail stones)

• Vacuum tube with heat pipe: 58 x 1800mm, 

• Collectors may be connected in series to increase water heating capacity.

• No water inside the evacuated tubes:  the  solar  system can still be in service even with several tubes broken or operate as normal geyser.

Systems:

• Easy plug-in installation.

• Free maintenance.

• Suitable for mains pressure water (up to 8 bar).

• Stable solar conversion during the day.

• The ideal  solar water heating system  for commercial  and domestic use.

• Frame & stand material: 1.2mm thick  s/steel or aluminium.

• Life expectation 25 years.

• Intelligent system control  for full  automatic operation.

• For areas where there is no risk of freezing. ( >-10⁰C )Recirculation freeze protection can be provided by the recirculation feature of the  intelligent controller.

In  Open Loop (direct) Water Heating System, cold  water   flows  from the  bottom of the water tank  through  collector, absorbs the heat from the manifold (heat exchanger)  and  hot water returns into the tank, where it's stored in upper side of the tank. That process repeats itself  hundreds of times during the day and the water temperature  inside the tank will rise from 20C⁰ up to 80C⁰  in a single day.   

An Open Loop system  provides many advantages. It is the simplest and typically the least expensive active system to install. There is no heat exchanger inside the tank, which allows efficient heat transfer directly to the water. The system operates at standard line pressure. It is simple to add capacity to the system if demand changes. The system integrates easily with existing hot water systems.

SPOL systems are suitable only for an single  heating applications  such:

• hot water supply  for domestic or commercial use  or

• hot water supply  for central heating system or

• hot water supply  for under floor heating or

• hot water supply  for swimming pool heating.

Water tanks:

• Water tank capacity: 100 -600L

• Inner tank material: 1,2 - 1,8 mm  food grade SUS304  stainless steel welded by automatic argon machine.

• Outer tank material: 0,6 mm thick s/steel  or galvanized & powder coated steel plate.

• Superior heat preservation ensured by 60mm insulation layer (high density polyurethane foam).

• Copper coil (heat exchanger) inside the tank.

• Back up electric element and safety valve includes.

Collectors:

• Copper heat pipes for rapid heat transfer.

• Corrosion resistant silver brazed copper header.

• Reliable and efficient with twin-glass solar tubes.

• Absorption rate: =94%, thermal radiation rate: 6% (100⁰C).

•  Hail resistant vacuum tubes. (up to 40mm hail stones)

• Vacuum tube with heat pipe: 58 x 1800mm, 

• Collectors may be connected in series to increase water heating capacity.

• No water inside the evacuated tubes:  the  solar  system can still be in service even with several tubes broken or operate as normal geyser.

Systems:

• Easy plug-in installation.

• Free maintenance.

• Suitable for mains pressure water (up to 8 bar).

• Stable solar conversion during the day.

• The ideal  solar water heating system  for commercial  and domestic use.

• Frame & stand material: 1.2mm thick  s/steel or aluminium.

• Life expectation 25 years.

• Intelligent system control  for full  automatic operation.

• Freeze protection  provided by the antifreeze and if needed the recirculation feature of the controller.

• Freezing is the minimal concern for these series.

In  Closed Loop (indirect) Water Heating System,  antifreeze trapped in closed   copper pipeline  flows  through  collector and a heat exchanger installed inside the water tank absorbs the heat from the  collector manifold (heat exchanger). When hot antifreeze reaches the heat exchanger inside the tank,  water absorbs the heat from the heat exchanger and  it will be stored in the tank. Cold antifreeze again will flow through collector to absorb the heat. That process repeats itself  hundred of times during the day and the water temperature inside the tank  will rise from 20C⁰ up to 80C⁰  in a single day.   

The Closed Loop systems are more complicated to compare with Open Loop systems due to implementation of few additional components such copper coil (heat exchanger) inside the tank, expansion vessel, special valves and ect. SPCL systems are suitable for areas with questionable water quality and all climate conditions and are the most preferred option for extremely cold areas.

SPCL systems are suitable for a single and multiple solar heating applications such:

• hot water supply  for domestic or commercial use  or

• hot water supply  for central heating system or

• hot water supply  for under floor heating or

• hot water supply  for swimming pool heating.