Sawmill House

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The Sawmill House

Annual Heat Budget vs Floor Temperature.

The following table presents estimates of the annual heat budget for various floor temperature values -

 FloorT Walls   Wndws    Ceilng   Floor    Doors   Inflt    Sum 1  HIndx1   SGain    Sum 2   HIndx2   NGals

  51    9.32     3.89     6.19     3.72     0.79     9.31   33.23   2.92    15.28    17.95     1.57   350.33
  51    9.32     3.89     6.19     3.72     0.79     9.31   33.23   2.92    15.28    17.95     1.57   350.33
  52    9.32     3.89     6.19     4.16     0.79     9.31   33.67   2.95    15.28    18.39     1.61   358.89
  53    9.32     3.89     6.19     4.60     0.79     9.31   34.11   2.99    15.28    18.83     1.65   367.45
  54    9.32     3.89     6.19     5.04     0.79     9.31   34.55   3.03    15.28    19.27     1.69   376.02
  55    9.32     3.89     6.19     5.48     0.79     9.31   34.99   3.07    15.28    19.71     1.73   384.58
  56    9.32     3.89     6.19     5.92     0.79     9.31   35.43   3.11    15.28    20.14     1.77   393.14
          *** 20 percent less auxiliary annual heating needed per year
  57    9.32     3.89     6.19     6.36     0.79     9.31   35.87   3.15    15.28    20.58     1.81   401.70
  58    9.32     3.89     6.19     6.79     0.79     9.31   36.30   3.18    15.28    21.02     1.84   410.27
  59    9.32     3.89     6.19     7.23     0.79     9.31   36.74   3.22    15.28    21.46     1.88   418.83
  60    9.32     3.89     6.19     7.67     0.79     9.31   37.18   3.26    15.28    21.90     1.92   427.39
  61    9.32     3.89     6.19     8.11     0.79     9.31   37.62   3.30    15.28    22.34     1.96   435.96
  62    9.32     3.89     6.19     8.55     0.79     9.31   38.06   3.34    15.28    22.78     2.00   444.52
          *** 10 percent less auxiliary annual heating needed per year
  63    9.32     3.89     6.19     8.99     0.79     9.31   38.50   3.38    15.28    23.22     2.04   453.08
  64    9.32     3.89     6.19     9.43     0.79     9.31   38.94   3.42    15.28    23.65     2.08   461.64
  65    9.32     3.89     6.19     9.87     0.79     9.31   39.38   3.45    15.28    24.09     2.11   470.21
  66    9.32     3.89     6.19    10.30     0.79     9.31   39.81   3.49    15.28    24.53     2.15   478.77
  67    9.32     3.89     6.19    10.74     0.79     9.31   40.25   3.53    15.28    24.97     2.19   487.33
  68    9.32     3.89     6.19    11.18     0.79     9.31   40.69   3.57    15.28    25.41     2.23   495.90
          *** Sawmill House
  69    9.32     3.89     6.19    11.62     0.79     9.31   41.13   3.61    15.28    25.85     2.27   504.46
  70    9.32     3.89     6.19    12.06     0.79     9.31   41.57   3.65    15.28    26.29     2.31   513.02
  71    9.32     3.89     6.19    12.50     0.79     9.31   42.01   3.69    15.28    26.73     2.34   521.58
  72    9.32     3.89     6.19    12.94     0.79     9.31   42.45   3.72    15.28    27.16     2.38   530.15
  73    9.32     3.89     6.19    13.38     0.79     9.31   42.89   3.76    15.28    27.60     2.42   538.71
  74    9.32     3.89     6.19    13.82     0.79     9.31   43.32   3.80    15.28    28.04     2.46   547.27
  75    9.32     3.89     6.19    14.25     0.79     9.31   43.76   3.84    15.28    28.48     2.50   555.84
          *** 10 percent more auxiliary annual heating needed per year
  76    9.32     3.89     6.19    14.69     0.79     9.31   44.20   3.88    15.28    28.92     2.54   564.40
  77    9.32     3.89     6.19    15.13     0.79     9.31   44.64   3.92    15.28    29.36     2.58   572.96
  78    9.32     3.89     6.19    15.57     0.79     9.31   45.08   3.95    15.28    29.80     2.61   581.52
  79    9.32     3.89     6.19    16.01     0.79     9.31   45.52   3.99    15.28    30.24     2.65   590.09
          *** 20 percent more auxiliary annual heating needed per year
  80    9.32     3.89     6.19    16.45     0.79     9.31   45.96   4.03    15.28    30.67     2.69   598.65

Column Headings -

  FloorT Floor temperature, degrees Fahrenheit
  Walls  Walls annual heat loss, MBTU/year
  Wndws  Windows annual heat loss, MBTU/year
  Clng   Ceiling annual heat loss, MBTU/year
  Floor  Floor annual heat loss, MBTU/year
  Doors  Doors annual heat loss, MBTU/year
  Iflt   Infiltration annual heat loss, MBTU/year
  Sum 1  Sum of annual (walls ... infiltration losses), no solar Gain
  HIndx1 Heating Index, BTU/DD/Ft**2, No solar gain
  SGain  Annual solar gain, MBTU/year
  Sum 2  Net sum of Heat Losses, including solar gain, MBTU/year
  HIndx1 Heating Index, BTU/DD/Ft**2, with solar gain
  NGals  Estimated Annual propane need, gallons/year, exclusive of domestic hot water

Notes - The floor ceiling temperature in the Sawmill House is 69 degrees Fahrenheit.

Copyright ©2005, 2009 E. Stiltner.

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Updated '8-Aug-2009,11:50:40'