By heating your water using the sun's
radiation, thermal collectors can provide almost all your hot water
during the summer and an average of 50 - 70% annually. Put simply,
a solar fluid circulates through the panels and into a twin coil
solar cylinder, which in turn heats the water in the central
A twin coil cylinder comprises one coil which receives the heat
from the collector on the roof, and another that is used to supply
heat from the main household heat source/boiler when solar energy
is insufficient. Some are also fitted with an immersion heater.
A typical family of four will use between 200 and 300 litres of
water per day.
There are two types of collectors - a flat plate or an evacuated
tube. Price and efficiency need to be evaluated. An evacuated
system is generally more expensive but more efficient.
You'll need to ensure that energy saving measures have been
taken around the home (i.e. roof insulation/cavity wall insulation,
Design and location considerations...
Although typically used domestically, there are solar thermal
systems on the market to cater for any size of building. Ideally
they will need to be mounted on a south facing surface, which
receives south/south-east sunlight for most of the day. Since twin
coil cylinders are usually quite large, space and location need to
The sizing of the total system needs to be calculated.
- Solar thermal systems carry points for the Code for Sustainable
- Becoming an MCS approved installer could open new business
- Quick and easy to install. They come in kits and are great for
new build or existing properties.
- Take advantage of the Renewable Heat Incentive - check out page
41 for more details.
- Easily integrated with other and existing heating systems.
- Almost ma intenance free and can add value to the
Jewson has everything you'll need...
- Products; Jewson understands the importance of being able to
supply our customers the very latest renewable technologies. We
have links to many suppliers and are able to offer a wide choice of
options. In addition we are able to connect you with a local MCS
installer. Jewson supply sizes and formats from various
- Greenworks; Jewson have a network of regional sales centres
across the UK with Greenworks trained specialists who can help and
advise on this technology.