Solar Thermal or Solar Hot Water systems have been used widely and the simple but
efficient process of turning daylight to heat is well tried and tested, the principle
behind the operation of the solar hot water system relies on:
Light - The Solar Thermal
panel is able to efficiently use both direct and diffuse light. Hot water can be
produced even on a cool Autumnal day even the sky is overcast or cloudy.
Collector - The Solar Thermal collector is designed to absorb as much heat and light
from the sun possible, the heat from the collectors is used to heat the hot water
Controller & Pump - The controller monitors the temperature of the collector and
the hot water cylinder. Once the collectors are hot enough the controller activates
a circulation pump transferring heat from the collectors to heat the hot water cylinder.
Once the cylinder is up to temperature the pump is stopped again.
Cylinder - A solar cylinder has two coils; one connected to the boiler and one connected
to the collectors. This enables hot water to be generated by the Solar panels late
Spring to late Summer and a combination of heating from the boiler and Solar panels
in the cooler months.