Which heating Fuel?

Unknown
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edited December 2016 in Caravan & Motorhome Chat #1
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  • johnathome
    johnathome Forum Participant Posts: 101
    edited December 2016 #2

    One problem the outside temp would be constantly changing.

    so therefore the use of power/gas consumption would vary greatly.

     

  • Unknown
    Unknown
    edited December 2016 #3
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    Unknown
    edited December 2016 #4
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  • ChemicalJasper
    ChemicalJasper Forum Participant Posts: 437
    edited December 2016 #5

    Propane contains around 50 MJ/kg.

    LPG Propane has a density of 0.54 kg/l

    So a litre of LPG propane contains 50 x 0.54 = 27 MJ of energy.

    1 Joule is 1 watt of power per second, so 1 MJ = 0.2777777777778 kWh.

    Therefore there are 27 x 0.28 = 7.49 kWh in 1 litre of LPG propane.

    so 8p / kWh - 24p / 3kWh.

    Now for electricity as nearly all the energy is converted to heat, the efficiency can be assumed as 100%.

    However for gas, efficiency drops to typically 60-85%, so if we are comparing apple with apples - i.e. kWh or heat into the MH with 3kWh of heat into the MH. 

    So, between 24 / 0.85 = 28p / 3kWh and 24 / 0.60 =  40p / 3kWh.

    So for LPG propane between 28-40p / 3kWh (subject to how efficient your heater is)

    vs (as BB states) for electricity 36p / kWh.

    I would say that there is really not much in it!smile

     

      

  • Vicmallows
    Vicmallows Forum Participant Posts: 580
    500 Comments
    edited December 2016 #6

    Yep. Agree totally with Chemical Jasper.

  • ScreenNameAE9BED9AB4
    ScreenNameAE9BED9AB4 Forum Participant Posts: 68
    edited December 2016 #7

    My reply is get a life 

  • KeefySher
    KeefySher Forum Participant Posts: 1,128
    1000 Comments
    edited December 2016 #8

    and the compliments of the season to you and yours tongue-out

    Bah humbug smile

  • Wildwood
    Wildwood Club Member Posts: 3,702
    500 Likes 1000 Comments Name Dropper Photogenic
    edited December 2016 #9

    One other point is that except in the initial warm up period the heater will only work intermittently to maintain the temperature so the actual heating costs are then entirely dependent on other factors mostly the insulation efficiency of the caravan.

    If you are on an electric hook up though that is the cheapest for you.

  • Unknown
    Unknown
    edited December 2016 #10
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    Unknown
    edited December 2016 #11
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