[dropcaps_dark] S [/dropcaps_dark] olar Thermal Systems use the sun’s warmth to heat your hot water. Fluid inside solar collectors (panels) on your roof absorbs irradiance from the sun. It’s then pumped through pipes to your hot water cylinder, heating up the water to a temperature we set. Your boiler or immersion heater then tops up the heat as needed, if needed. Why not upgrade your heating system so you make your own heat.
Solar thermal prices start from £3500.00 for a residential system and can dramatically cut your energy bills.
A solar thermal system will work best in the summer months, when it can heat up to 90% of the hot water you use. It will save money all year round and thanks to the government there are some financial incentives too. The Renewable Heat Incentive is very much like the tariff for solar PV and pays you for energy production, with a pre-payment scheme to help you purchase the system.
How solar thermal works:
- Cold water enters the hot water cylinder from the mains
- Inside a closed loop, fluid is pumped up to a solar panel on the roof
- Fluid passes through metal pipes inside the panel and is warmed by the sun
- The fluid then passes into a coil inside your hot water cylinder, heating up the water
- A second coil inside the cylinder is connected to your boiler, this is a back-up for the system
Solar thermal systems are made up of a solar panel (solar collector), a cylinder to store hot water and a pump with a controller. A boiler or immersion heater will be there to back up the system and if you don’t have one we can look at this for you, but most of you will.
There are two types of solar thermal panel: evacuated-tube collectors and flat-plate collectors.
Evacuated-tube collectors are known for being slightly more efficient of the two, as they can produce slightly higher yields in autumn and spring. However, over a year the amount of hot water both types of solar thermal collector produce is very similar, so always look at the pros and cons of each before making a decision.
Flat-plate thermal collectors are good value, last a long time and need very little maintenance. They’re a good option for new builds or if you are having a new roof, as they can be integrated with the roof itself (Can be fitted to any roof though). This is a very neat look similar to s Velux window and saves money on other roofing materials.
Evacuated-tube collectors have a slightly higher efficiency than flat-plate thermal collectors, so they may be a good option if you only have a small area of space. They can be mounted in almost any orientation, from walls to flat roofs. Even if you already have solar PV panels covering your roof, you may still be able to fix a solar thermal collector to a south-facing wall.
The hot water cylinder will have a twin coil, with the lower coil heated by the solar panel and the upper coil by a conventional boiler. The pump and its speed is managed by the controller. It reacts to the temperature of the fluid in the solar collector and the water in the cylinder to determine the rate at which the fluid is pumped around the system.
[underline_header] Sizing Solar Thermal [/underline_header]
To get the sizing of the solar system you need or want we will have to come to your property and give you a free survey. The systems go from a single panel with a smaller 180L cylinder upwards and quite a bit depends on the size of the property and how many occupants there are. Do you have one bathroom or any en-suites, this all comes into play when we size up your system. Click the picture to the right to get an idea of sizes.
We offer solar thermal installations and design over the midlands including Leicester, Loughborough, Market Hardborough, Nottingham, Derby and Birmingham.
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[underline_header] Examples [/underline_header]
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