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Evacuated tube solar collectors
If you analyze carefully then you will realize that the electric water heaters are the ones that consume maximum electricity compared to the other appliances used in your house. The amount that is required to provide you with sufficient water to do your dishes and clothes and your bathing needs is quite high which means higher electricity costs.Due to the need for reducing your costs and taking initiative steps towards a greener planet many have turned to the solar water heating systems to deal with their problems. The solar water heater captures the heat generated by the sun with the help of the solar panels fitted onto the roof of your house and transfers this heat in the form of a fluid which again transfers to a hot water cylinder for storing the heated water.
How does the solar heater function?
The functions of a solar water heater is to collect the solar energy with the help of a solar collector, transfer the collected energy to a storage tank either naturally with the help of thermo-siphon system or by using a circulator like a low-head pump and finally store the heated water till it is required for some purpose.
The collectors that are used normally in residences are the flat plate collectors, the integral collector storage system and the evacuated tube solar collectors. The evacuated tube solar collectors are the most expensive amongst the solar collectors available.
Evacuated tube solar collectors
The evacuated tube solar collectors consist of transparent tubes made of glass that are placed parallel in 2 rows. Each tube has an outer glass tube with a metal absorbing tube attached to the fin. This fin is coated with a substance that helps absorb the solar energy and simultaneously prevents any heat loss due to radiation.
Useful in cold temperatures
The designing of these collector tubes are so unique that they are very efficient for the purpose of collecting and transferring the energy to your home. And for the design precisely the evacuated tube solar collectors can be used in winters when the days are shorter or when the sun does not shine brightly. Thus evacuated tube solar collectors are ideal for such locations and climes where there is not adequate sunlight to be stored.
Highly efficient solar collectors
Considering that the evacuated tube solar collectors are more efficient than the flat plate collectors does not state that they can produce more hot water. It only means that the panel area that is in use is less. The evacuated tube solar collectors use a lesser collector area in comparison to the flat plate collectors for heating the same amount of water. However, the evacuated tube solar collectors have been found to be the ideal system in conditions with low temperatures.
Why are evacuated tube solar collectors the ideal choice?
Before you buy any solar heating system you need to ensure the suitability of your property for the installation of this system. You need to have two to five square meters of roof space facing southwards with minimal or no shading, You also need space for the hot water cylinder. The solar heating water systems work very well with condensing boilers but not with combination boilers.
So your installation cost could go higher. The installation costs depend on factors like the type of roof you have, the size of your solar panels, the location of your house and the hot water system that you have. Installing the evacuated tube solar collectors you do not have to think about so many things as this system uses less roof space to heat the same amount of water.
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Related information
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