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  • quality systems
  • indemnified design
  • expert support

Solar Thermal Systems

Overview of Solar Thermal Systems

Thousands of homes throughout the UK benefit from using Solar Panels to produce domestic hot water (Solar Thermal). Homeowners can save as much as 50% on the cost of heating water used for baths, showers and taps. Even with the unpredictable British weather, people are enjoying hot showers heated from solar panel renewable energy technology.  Two panels on a typical house roof could be enough to give an average family ample baths/showers for a day even on a mild-moderately cloudy day.

How Solar Thermal Systems work

There are two types of solar thermal panels used for heating hot water, flat plate or evacuated tube. In principle both panels collect the heat from the sun, the way they transfer the heat is different. An evacuated tube heats a heat transfer fluid that rapidly absorbs heat. This fluid changes from a liquid to a gas and moves from the bottom to the top of the panel. The heat transfers to a circuit between the panel and a solar coil in the cylinder. The coil heats the hot water.

A flat plate solar panel works by heating water as it circulates around the panel. Cold water from a solar coil in the cylinder is pumped through the panel, the temperature of the water increases as it passes heat-absorbing fins. This circuit then returns through a solar coil (now hot) within the domestic hot water cylinder. The heat from the coil transfers into the tank and the process begin again.

System Design & Expert Support

An essential part of our initial design process is to calculate the suitability of a solar thermal panel installation, this is both from a technical point of view and a cost versus return basis.  We carefully calculated the Hot water volume and demand using industry standards and regulations (Building regulations approved document G, BS EN 6700, BS EN 12975 and the HSE Approved code of practice for legionella) coupled with our own product and system knowledge. We also need to correctly integrate other heat sources and implement a correct, compliant, control strategy.

Considering the solar production volume, demand prediction, and the heat source; we then consider the most suitable storage and plumbing method for the project. This may be via a solar cylinder or by using a pre-heat system. We provide a range of wiring diagrams and plumbing schematics for the installation team to follow. This applies to both residential and commercial project.

Downloads Manuals and Installation Guides

Downloads Manuals and Installation Guides