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solar panels with out the tank

  • 07-10-2010 10:44am
    Registered Users Posts: 573 ✭✭✭

    Just browsing as I have nearly saved enough money to get some solar panels in...

    HAs any one every used a system like this before

    or can any one offer me any advice on it. It seems to me you get your normal solar panel but with out the huge tank, which would be good if you lived in a small house. Or are you better just gettin the whole complete system

    Mod edit: Do not link to a specific company on thread, it is a breach of the charter.

    thanks paddy


  • Registered Users Posts: 1,111 ✭✭✭freddyuk

    The point of solar is to maximise the the available energy give off by the sun during the day. So you want to collect as much heat as possible and store it for as long as possible at the highest temperature possible.
    By using a small DHW cylinder you will heat this very fast on a good day.
    One bath and it is all gone.
    The reason for the big cylinders with solar is to store all the hot water so you have a supply left for your shower/bath in the morning.
    The kit you are looking at does not provide a decent storage solution. It does not provide a heat dump for the excess heat that the panel will generate when the cylinder reaches temperature. It can do that quite fast although i do not know how good the retrofit solar elements are but for sure they are a massive compromise.
    I would suggest you work out your hot water needs on an average day then design a system that suits those needs. Buying the separate components allows you to do this without compromising.
    For that money you can have a complete kit more suited to solar input.
    If you have no room for a proper solar storage cylinder then maybe you need to reconsider but a twin coil solar store is a much better option.(IMHO)