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info on solar panel performance during dull June

  • 04-07-2012 8:09am
    #1
    wazzoraybelle
    Registered Users, Registered Users 2 Posts: 659 ✭✭✭


    Ireland has had the dullest June on record, with less than 50% average sunshine in some areas. I'm curious as to how people's solar panels have performed over the month. Has there been a need to use supplementary heating? or have panels been able to supply all the households hot water needs?
    Thanks Wazzo.


Comments

  • #2
    Mothman
    Closed Accounts Posts: 6,498 ✭✭✭Mothman


    Almost managed.
    Family of 5 with daily bath and showers washing up etc.
    6sqm flat plate feeding 500l store.

    June sunshine here was 124hrs.
    You can view my sunshine data

    Broken down into 7 day periods
    1-7 20hrs
    8-14 29
    9-21 34
    22-28 28

    With no sunshine on last day of May there were a few kettles boiled for bath on 2 evenings during first week, but we managed without supplementing during rest of month.

    I actually raised temp of water in top half by 5C this morning with immersion, but its been mainly sunny! this morning and I think we would have been fine without.

    Sunday morn is the next day where I may have to consider immersion.


  • #3
    quentingargan
    Registered Users, Registered Users 2 Posts: 1,627 ✭✭✭quentingargan


    Similar to Mothman. Mostly scraped through...

    We have 80 small tubes and 300L cylinder. Over-sized a bit, but 500L stores weren't available when we were building so we normally expect to be using the heat dump a bit in June. But although it was particularly wet and miserable in West Cork, most days had a few hours where it brightened up a bit, not sunshine necessarily, and having the smaller cylinder meant we got up to a useful temperature quite quickly.

    That said, sometimes had to take a shower rather than a bath, and a couple of times had to put on a kettle for greasy dishes. Not quite Armageddon.


  • #4
    Mothman
    Closed Accounts Posts: 6,498 ✭✭✭Mothman


    Yesterday after using immersion to raise temperature in top half from 47 to 52C, the sunshine had the top to 62C by end of day!

    It was sunny most of day here! in contrast to some areas


  • #5
    sas
    Registered Users, Registered Users 2 Posts: 1,282 ✭✭✭sas


    We have 90 HP200 tubes and a 1000 litre tank.
    No immersion.
    No backup installed up to 2 weeks ago. We've gone ahead and plumbed in an oil backup anyway until we can afford the boiler stove that we actually wanted. This was used for 20 mins 2 nights ago to test it.

    We moved in on 4th May.
    2 adults and 2 young kids in the house.

    We didn't use a bath, we've got fairly thirsty showers though.

    Never ran out of hot water. Came close on 2 occasions but the sun came out and sorted it out.


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