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Subject: How many BTUs

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Island Mike    Posted 12-26-2017 at 13:46:28 [URL] [DELETE]        [Reply] [Email]  
  • How many BTUs
  • My 2 month electricity bill, is 5 times higher than the previous one. Propane is also up. Got me thinking. We hover around freezing here, but some of you guys are around zero F. The amount of BTUs being consumed must be staggering for some.
    Was thinking also about Dave#1. These rolling condos are not very well insulated. My similar sized shed stays warm for a fraction of the heat.

    Island Mike

    steveVa    Posted 12-28-2017 at 01:31:38 [URL] [DELETE]        [Reply] [No Email]  
  • Re: How many BTUs
  • BTU's flow based on Delta T, which is temperature differential from inside to outside. The higher the differential the higher the flow. You loose twice as many BTU's when your Delta T doubles...
    But I have also found that rolling condos have a lot of what is called infiltration. That is Air leaking around doors and windows and badly sealed floors, ceilings, and walls. Infiltration is warm air going out and cold air coming in. You have to heat the cold air coming in. Most old houses and rolling condos have as much heat loss from infiltration as they do from conduction (heat flow through walls and ceilings and floors). Insulation is also a key factor, and in a rolling condo you are limited to the thickness of the walls. Your shed must be sealed up better then the condo. Also has less windows and doors. Windows are another big loss of heat through the glass. Single pane glass has a real lousy (as in next to none) insulation factor.

    Island Mike    Posted 12-28-2017 at 01:55:54 [URL] [DELETE]        [Reply] [Email]  
  • Re: How many BTUs
  • Thank you for that Steve. It was a bit like reading an article in Scientific America. If the conclusion is, these things are darn cold in the winter, then I agree. I have been whining when it gets to around 32F. And I have systems to stay warm. Dave#1 must be running his propane furnace fairly steady.
    Another Dave here on my Island, froze his water pipes the other night, right when his missus was taking a shower. We are back in the mid 30s at the moment.
    My new cottage will be 24 X 18 and two floors, with lots of insulation everywhere.
    We can not rely on electricity as it goes off fairly often. I will install a propane heater in the new place.I have a couple of windows cracked a teensy bit to get some fresh air in. The mattress warmer is the greatest thing since pockets.

    Island Mike

    Farmer Dan    Posted 12-27-2017 at 10:40:10 [URL] [DELETE]        [Reply] [Email]  
  • Re: How many BTUs
  • -6 when I woke up this morning. Sure am glad I have a 96% efficient furnace and natural gas.

    K.LaRue-VA    Posted 12-28-2017 at 20:46:23 [URL] [DELETE]        [Reply] [Email]  
  • Re: How many BTUs
  • Makes me even happier we have a heat pump that can be nearly 300% efficient. It's a lot more efficient to pump heat than to create it, unless the fuel is free. We also run a couple of wood stoves. The standing deadwood on our property only costs the fuel to cut it, and time to split it. The free exercise is better than paying dues at the Y like the city folks do.

    Tim Daley(MI)    Posted 12-27-2017 at 09:01:37 [URL] [DELETE]        [Reply] [No Email]  
  • Re: How many BTUs
  • It was my understanding there'd be no math this week... ; > ) Stay Safe & Warm...

    Tim Daley(MI)

    dave#1    Posted 12-27-2017 at 00:07:45 [URL] [DELETE]        [Reply] [No Email]  
  • Re: How many BTUs
  • You got that right !
    We have 2 30 lbs propane tanks on our old 86 camper. Cost about $55.00 to fill both tanks and they last maybe 2 to 3 weeks we also use a 1500 watt space heater
    All in all its pretty comfortable !

    Now the next 6 days they are calling for low temps 2 to -4
    It's 9 degrees right now !

    jimmyjack    Posted 12-26-2017 at 22:53:47 [URL] [DELETE]        [Reply] [No Email]  
  • Re: How many BTUs
  • Its minus 18 here now and its so cold the meter is stiff and wont turn very fast!

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