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How efficient is you MHRV

  • 11-11-2013 8:14am
    #1
    fclauson
    Registered Users, Registered Users 2 Posts: 1,691 ✭✭✭


    Thought I would share this with you from my facebook page (which is at http://on.fb.me/HIDt5K )

    1458688_177658312439281_1086933824_n.jpg

    It shows my MRHV being energy positive !! - that is the air coming in is warmer than the air going out - all be it by just 0.06 degrees

    But on a more important point the numbers do show how important it is to monitor the performance of the system all the time to ensure peak performance


Comments

  • #2
    Outkast_IRE
    Registered Users, Registered Users 2 Posts: 7,516 ✭✭✭Outkast_IRE


    How accurate are the thermometers your using for this? just asking cause they are fairly notorious in industry for costing a lot for extreme accuracy and then needing relatively frequent calibration to maintain it.

    In industry it wouldn't be uncommon to see thermometers out by a full 1 degree or more.


  • #3
    fclauson
    Registered Users, Registered Users 2 Posts: 1,691 ✭✭✭fclauson


    Outkast_IRE wrote: »
    How accurate are the thermometers your using for this? just asking cause they are fairly notorious in industry for costing a lot for extreme accuracy and then needing relatively frequent calibration to maintain it.

    In industry it wouldn't be uncommon to see thermometers out by a full 1 degree or more.

    I am using Dallas DS1820 chips suspended into the airflow and connected to a Arduino microprocessor -


  • #4
    ShowAndGo
    Registered Users, Registered Users 2 Posts: 68 ✭✭ShowAndGo


    This might be of interest to some people.
    Raising the Standards of MVHR


  • #5
    Outkast_IRE
    Registered Users, Registered Users 2 Posts: 7,516 ✭✭✭Outkast_IRE


    fclauson wrote: »
    I am using Dallas DS1820 chips suspended into the airflow and connected to a Arduino microprocessor -

    These are good thermometers you are using, accuracy to +/- 0.5 degrees comes at a high cost price usually.
    Sounds like a nice set up you have there.


  • #6
    Eoghan Barra
    Closed Accounts Posts: 286 ✭✭Eoghan Barra


    fclauson wrote: »
    It shows my MRHV being energy positive !! - that is the air coming in is warmer than the air going out - all be it by just 0.06 degree

    Interesting results. Where do you think that extra energy could be coming from?


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  • #7
    fclauson
    Registered Users, Registered Users 2 Posts: 1,691 ✭✭✭fclauson


    Good question - even if there was 0.06 in the other direction it would show very a effective system.

    I know little about "entropy" but was wondering if its the damp air in the house giving up its heat ?

    Or are the fans in the unit running warm and thus adding to the heat


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