Renewable Energy Systems from Solar Essence: solar photovoltaic pv, air & ground source heat pump, solar thermal heating, domestic wind turbine, rainwater harvesting, underfloor heating uk
E - electric coil vented systems
Identical to the twin coil system except that here you have only one heating coil
as there is no boiler backup. comes complete with one or two immersions depending
on your original configuration, e-1 and e-2 providing heat backup.
An additional benefit of installing a solaressence® cylinder that each cylinder is
custom-made for your home so can be manufactured to fit snugly into the correct space.
These cylinders are also much more highly insulated so you lose less energy with
the heat escaping. They also have two temperature ports built into them so the digital
solar controller can more accurately monitor the temperature within the cylinder.
Substantial savings on your hot water costs can be made because the energy you receive
from the solar system displaces the energy your electric immersion heaters would
otherwise have had to produce. Plus you have the ability to upgrade at any time in
the future to a dual system should you install a new boiler with wet radiators.
The system is available in either a vented (gravity fed water) or un vented format
providing mains pressure hot water.
how it works
The solar collectors u begin to rise in temperature. The temperature differential controller SE3 v monitors the difference between the collector and your cylinder with highly accurate temperature sensors y . When the temperature of the collectors rises more then 6-8 degrees above that of the water cylinder the controller turns the solar pump w on. This creates circulation within the sealed solar circuit z which is made of pre-insulated stainless steel duo-flex pipe containing tyfocor (solar grade anti-freeze) heat transfer fluid. Your immersion heaters x should still be on similar settings as before & will still monitor the temperature in your cylinder, which according to your timing settings will boost the cylinder temperature if required. The need for your immersion heaters to boost the cylinder temperature will depend on the time of the year, the amount of solar availability, and your hot water needs. Sometimes it will need to boost, sometimes it will not. Again it must be remembered that if your immersion heaters do need to boost the temperature, it is just that, a boost. The energy you receive from the solar system displaces the energy your immersion heaters would otherwise have had to produce whether your immersion heaters still have to boost or not. Please also note if you currently have one immersion heater then your new cylinder will have one immersion heater, if you currently have two immersion heaters then your new cylinder will have two immersion heaters.
This transfer of heat from the solar circuit to the cylinder has the effect of taking the heat out of the collectors u and their temperature drops again. When their temperature has dropped to only 2 degrees above the water cylinder the temperature differential controller SE3 v turns off your solar pump w. The whole process then simply starts again. So in essence the system transfers the heat from the collectors to your cylinder in many short bursts throughout the day.
