Immersion Water Heater Solar PV Relay Switch

Discussion in 'UK DIY' started by george [dicegeorge], Apr 13, 2012.

  1. george [dicegeorge], Apr 13, 2012
    #1
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  2. "george [dicegeorge]" <> wrote in message
    news:jm9is6$2f5o$...
    > Immersion Water Heater Solar PV Relay Switch
    > to use electric immersion heater when the sun shines
    > and save on FIT electricity bills, is this a good idea?
    > and can anyone spot a difference between
    > £190 http://www.chrisrudge.co.uk/immersion.htm
    > and £31 http://www.reuk.co.uk/Water-Heating-with-Surplus-Solar-PV.htm
    > ?



    The cheap one doesn't monitor the incoming electricity - it just guesses
    from the sunlight level if your system is generating enough power. Cheap but
    it does work the immersion at full power. Sounds an interesting idea.

    The expensive one monitors the power level from the PV array but will only
    work with an 800W -> 1Kw immesrion heater so doesn't heat the water very
    quickly.

    Wait six months for a better one to come along :)

    --
    No plan survives contact with the enemy.
    [Not even bunny]

    Helmuth von Moltke the Elder

    (\__/)
    (='.'=)
    (")_(")
     
    David WE Roberts, Apr 13, 2012
    #2
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  3. george [dicegeorge]

    harry Guest

    On Apr 13, 5:05 pm, "george [dicegeorge]" <>
    wrote:
    > Immersion Water Heater Solar PV Relay Switch
    > to use electric immersion heater when the sun shines
    > and save on FIT electricity bills, is this a good idea?
    > and can anyone spot a difference between
    > £190http://www.chrisrudge.co.uk/immersion.htm
    > and £31http://www.reuk.co.uk/Water-Heating-with-Surplus-Solar-PV.htm
    > ?
    >
    > [george]



    That's far too much money though it's a good idea. I posted about a
    similar thing myself a week ago-ish.
    How long would it take you to recover? Probably never would.
    As per above,wait for the price to come down.
    Meantime look at the weather forecast & just use an ordinary plug type
    timer.
     
    harry, Apr 13, 2012
    #3
  4. On 13/04/12 18:14, harry wrote:
    > On Apr 13, 5:05 pm, "george [dicegeorge]"<>
    > wrote:
    >> Immersion Water Heater Solar PV Relay Switch
    >> to use electric immersion heater when the sun shines
    >> and save on FIT electricity bills, is this a good idea?
    >> and can anyone spot a difference between
    >> £190 http://www.chrisrudge.co.uk/immersion.htm
    >> and £31 http://www.reuk.co.uk/Water-Heating-with-Surplus-Solar-PV.htm
    >> ?
    >>
    >> [george]

    >
    >
    > That's far too much money though it's a good idea. I posted about a
    > similar thing myself a week ago-ish.
    > How long would it take you to recover? Probably never would.
    > As per above,wait for the price to come down.
    > Meantime look at the weather forecast& just use an ordinary plug type
    > timer.


    £31, if heating a bath costs 50p
    then that's 5 years payback,
    assuming free copper wire!
    [g]
     
    george [dicegeorge], Apr 13, 2012
    #4
  5. On 13/04/12 18:14, harry wrote:
    > On Apr 13, 5:05 pm, "george [dicegeorge]"<>
    > wrote:
    >> Immersion Water Heater Solar PV Relay Switch
    >> to use electric immersion heater when the sun shines
    >> and save on FIT electricity bills, is this a good idea?
    >> and can anyone spot a difference between
    >> £190 http://www.chrisrudge.co.uk/immersion.htm
    >> and £31 http://www.reuk.co.uk/Water-Heating-with-Surplus-Solar-PV.htm
    >> ?
    >>
    >> [george]

    >
    >
    > That's far too much money though it's a good idea. I posted about a
    > similar thing myself a week ago-ish.
    > How long would it take you to recover? Probably never would.
    > As per above,wait for the price to come down.
    > Meantime look at the weather forecast& just use an ordinary plug type
    > timer.

    The £190 one cant tell if you're exporting or importing electricity,
    so there's no great advantage of this one over the £31 one,
    neither can tell if washing machines, kettles, heaters etc are on.

    More expensive is a 1kw immersion element.

    [g]
     
    george [dicegeorge], Apr 13, 2012
    #5
  6. george [dicegeorge]

    harry Guest

    On Apr 13, 6:32 pm, "george [dicegeorge]" <>
    wrote:
    > On 13/04/12 18:14, harry wrote:
    >
    >
    >
    >
    >
    > > On Apr 13, 5:05 pm, "george [dicegeorge]"<>
    > > wrote:
    > >> Immersion Water Heater Solar PV Relay Switch
    > >> to use electric immersion heater when the sun shines
    > >> and save on FIT electricity bills, is this a good idea?
    > >> and can anyone spot a difference between
    > >> £190http://www.chrisrudge.co.uk/immersion.htm
    > >> and £31http://www.reuk.co.uk/Water-Heating-with-Surplus-Solar-PV.htm
    > >> ?

    >
    > >> [george]

    >
    > > That's far too much money though it's a good idea.  I posted about a
    > > similar thing myself a week ago-ish.
    > > How long would it take you to recover? Probably never would.
    > > As per above,wait for the price to come down.
    > > Meantime look at the weather forecast&  just use an ordinary plug type
    > > timer.

    >
    > £31, if heating a bath costs 50p
    > then that's 5 years payback,
    > assuming free copper wire!
    > [g]- Hide quoted text -
    >
    > - Show quoted text -


    So you have 62 baths in five years? Hmmm. That's one a month. :)
     
    harry, Apr 14, 2012
    #6
  7. george [dicegeorge]

    Bob Martin Guest

    in 1123646 20120414 065446 harry <> wrote:
    >On Apr 13, 6:32=A0pm, "george [dicegeorge]" <>
    >wrote:
    >> On 13/04/12 18:14, harry wrote:
    >>
    >>
    >>
    >>
    >>
    >> > On Apr 13, 5:05 pm, "george [dicegeorge]"<>
    >> > wrote:
    >> >> Immersion Water Heater Solar PV Relay Switch
    >> >> to use electric immersion heater when the sun shines
    >> >> and save on FIT electricity bills, is this a good idea?
    >> >> and can anyone spot a difference between
    >> >> =A3190http://www.chrisrudge.co.uk/immersion.htm
    >> >> and =A331http://www.reuk.co.uk/Water-Heating-with-Surplus-Solar-PV.htm
    >> >> ?

    >>
    >> >> [george]

    >>
    >> > That's far too much money though it's a good idea. =A0I posted about a
    >> > similar thing myself a week ago-ish.
    >> > How long would it take you to recover? Probably never would.
    >> > As per above,wait for the price to come down.
    >> > Meantime look at the weather forecast& =A0just use an ordinary plug typ=

    >e
    >> > timer.

    >>
    >> =A331, if heating a bath costs 50p
    >> then that's 5 years payback,
    >> assuming free copper wire!
    >> [g]- Hide quoted text -
    >>
    >> - Show quoted text -

    >
    >So you have 62 baths in five years? Hmmm. That's one a month. :)


    So what? I haven't had a bath in over 40 years.
     
    Bob Martin, Apr 15, 2012
    #7
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