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Radiator Positioning with HRV

  • 20-05-2010 7:40pm
    #1
    timmer3
    Registered Users, Registered Users 2 Posts: 187 ✭✭


    hi.
    my central heating installer wants to put radiators opposite the windows, to create better circulation (some would say draught) around the room.

    the thing is i'm installing a HRV system and i know this will totally change the air-flow of the room, and affect the optimal rad position. can anyone advise, or has anyone got experience of radiators with a HRV house?

    my uneducated guess is that it doesn't really matter where the radiators go because there will be constant airflow throughout each room in the house because of the supply/extract paths and ~90% of the heat will get recycled anyway.

    thanks!
    Tagged:


Comments

  • #2
    heinbloed
    Registered Users, Registered Users 2 Posts: 1,632 ✭✭✭heinbloed


    The external walls are the coldest spot in the room. Why do you not like to warm them up?
    All heat emitting sources of energy designed for efficiency should be placed at the coldest spot. To keep it warm.
    You central heating system installer seems not to know how to make a heating system efficient. Or is taking you for a ride.
    Get a heating engineer to look at the entire project.
    Positioning of air moving devices and radiators should be done according to the laws of physics. The interaction of the two should be designed on paper before building work starts - and signed by the (heating-) engineer.


  • #3
    timmer3
    Registered Users, Registered Users 2 Posts: 187 ✭✭timmer3


    hi heinbloed. thanks for the reply. i forgot to mention that the walls are all externally insulated, but i expect they still are the coldest spot (there is an uninsulated wall adjoining the next house in the terrace). it's a DIY rennovation on a tight budget and i'm trying to save on professional fees where possible. i'll take your advice and site the rads on the external walls. many thanks.


  • #4
    imitation
    Registered Users, Registered Users 2 Posts: 1,815 ✭✭✭imitation


    heinbloed wrote: »
    The external walls are the coldest spot in the room. Why do you not like to warm them up?
    All heat emitting sources of energy designed for efficiency should be placed at the coldest spot. To keep it warm.
    You central heating system installer seems not to know how to make a heating system efficient. Or is taking you for a ride.
    Get a heating engineer to look at the entire project.
    Positioning of air moving devices and radiators should be done according to the laws of physics. The interaction of the two should be designed on paper before building work starts - and signed by the (heating-) engineer.

    I wouldnt consider the external wall the best spot for a radiator soley on the basis that its the coldest spot. If you place that rad on an internal wall your keeping the heat within a house on the whole. I think its a moot point either way as the objective of a rad is to heat the air itself with convection.

    I`m not sure how much merit the under the window layout has in an air tight house either, if your getting strong draughts of cold air through your window then something is wrong !

    In my own unprofessional opinion, your probably better off concerning yourself with how the rads are positioned for ergonomics rather that maximizing the heat output. I found in my own modern style house that rads were a real pain to place due to the lack of wall space in some of the more open plan rooms. you have to remember rads need space so you cant put a sofa or tv cabinent up against it. Stuff like vertical rads can be a real help in these cases.


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