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Solar ; what's the big idear?

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  • 25-04-2015 4:10pm
    #1
    gabbo is coming
    Registered Users Posts: 960 ✭✭✭


    Hi

    I replaced our hw tank a couple of years ago

    We have a south facing roof

    Is there any solution that doesn't require a new tank?


Comments

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    #2
    homer911
    Registered Users Posts: 5,113 ✭✭✭homer911


    If you want to heat the cistern in your airing cupboard, you will need a new tank. The tank will need three inputs - the heating system (gas, oil), the immersion, and the solar feeds. It also needs to be sized for your needs, and be connected to a heat spill in case it gets too hot and stagnates


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    #3
    PeteFalk78
    Closed Accounts Posts: 762 ✭✭✭PeteFalk78


    Don't do it. If you are frugal with your oil burner and it can heat hot water in isolation it should only cost you <100euro for summer months.
    It will takes you decades to get back the cost of a solar system.


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    #4
    gabbo is coming
    Registered Users Posts: 960 ✭✭✭gabbo is coming


    homer911 wrote: »
    If you want to heat the cistern in your airing cupboard, you will need a new tank. The tank will need three inputs - the heating system (gas, oil), the immersion, and the solar feeds. It also needs to be sized for your needs, and be connected to a heat spill in case it gets too hot and stagnates

    Ok thanks

    But do I need to replace the tank in the airing cupboard that is already heated by gas burner and immersion or do I need an additional tank in the attic

    My concern is space, no space for a bigger tank than the one in the airing cupboard


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    #5
    slimjimmc
    Registered Users Posts: 7,787 ✭✭✭slimjimmc


    homer911 wrote: »
    If you want to heat the cistern in your airing cupboard, you will need a new tank. The tank will need three inputs - the heating system (gas, oil), the immersion, and the solar feeds. It also needs to be sized for your needs, and be connected to a heat spill in case it gets too hot and stagnates
    Surely only 2 inputs (i.e. dual coils) are required, top coil for the boiler and bottom coil for the solar? An immersion heater doesn't require a coil.


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    #6
    dathi
    Registered Users Posts: 1,386 ✭✭✭dathi


    http://www.willis-renewables.com/how-it-works.htm have a look at this site their solar syphon is added to the outside of an existing cylinder can be used o vented and non vented cylinders


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    #7
    homer911
    Registered Users Posts: 5,113 ✭✭✭homer911


    slimjimmc wrote: »
    Surely only 2 inputs (i.e. dual coils) are required, top coil for the boiler and bottom coil for the solar? An immersion heater doesn't require a coil.

    Yep, I said input, not coil, both correct


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