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How much of my hot water can I get from the sun?
Posted by Gabriel Wondrausch on 13th December 2008 at 9:01 am
Have you ever wondered how much energy falls on your roof each year? Well probably not, but it is really quite interesting. The average UK house with a south facing roof of 30m² will be exposed to around 30,000KwH of the sun’s radiation every year. When you compare that to the amount of ener…
Posted in: Solar heat & hot water
Evacuated tubes: make sure you don’t get burnt
Posted by Gabriel Wondrausch on 4th February 2009 at 8:34 am
Evacuated tube collectors are the Formula One of the solar thermal world. They are more efficient than other types of collector as they are almost perfectly insulated, and heat cannot pass through a vacuum. As the tubes are cylindrical, they are always perpendicular to the sun reducing the amount of…
Posted in: Solar heat & hot water
Solar thermal for space heating
Posted by Gabriel Wondrausch on 21st May 2009 at 10:23 am
I am often asked whether a solar thermal system can be used for space heating as well as for hot water. Technically, it can. However in most cases it is neither cost effective nor energy efficient to do so. The cost of upgrading the system to work with space heating as well as hot w…
Posted in: Solar heat & hot water
Controlling solar thermal systems
Posted by Gabriel Wondrausch on 10th September 2009 at 9:43 am
The controllers used in solar thermal systems come in many different shapes and sizes and offer a variety of different options. The most basic controllers just have a differential control - this activates the solar pump when the temperature at the sensor on the collector is at a higher temperature t…
Posted in: Solar heat & hot water
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