Sawmill House

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The Sawmill House

Annual Heat Budget vs Ceiling Temperature.

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

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

  50    9.32     3.89     1.86    11.65     0.79     5.86   33.38   2.93    15.28    18.09     1.59   353.10
  51    9.32     3.89     2.03    11.65     0.79     6.00   33.69   2.96    15.28    18.40     1.61   359.16
  52    9.32     3.89     2.20    11.65     0.79     6.13   34.00   2.98    15.28    18.71     1.64   365.21
  53    9.32     3.89     2.38    11.65     0.79     6.27   34.31   3.01    15.28    19.02     1.67   371.27
  54    9.32     3.89     2.55    11.65     0.79     6.41   34.62   3.04    15.28    19.33     1.70   377.32
  55    9.32     3.89     2.72    11.65     0.79     6.55   34.93   3.06    15.28    19.64     1.72   383.37
  56    9.32     3.89     2.90    11.64     0.79     6.69   35.24   3.09    15.28    19.95     1.75   389.43
           *** 20 percent less auxiliary annual heating needed per year
  57    9.32     3.89     3.07    11.64     0.79     6.82   35.55   3.12    15.28    20.26     1.78   395.48
  58    9.32     3.89     3.25    11.64     0.79     6.96   35.86   3.15    15.28    20.57     1.80   401.54
  59    9.32     3.89     3.42    11.64     0.79     7.10   36.17   3.17    15.28    20.88     1.83   407.59
  60    9.32     3.89     3.59    11.64     0.79     7.24   36.48   3.20    15.28    21.20     1.86   413.65
  61    9.32     3.89     3.77    11.64     0.79     7.38   36.79   3.23    15.28    21.51     1.89   419.70
  62    9.32     3.89     3.94    11.64     0.79     7.51   37.10   3.25    15.28    21.82     1.91   425.75
  63    9.32     3.89     4.11    11.64     0.79     7.65   37.41   3.28    15.28    22.13     1.94   431.81
  64    9.32     3.89     4.29    11.63     0.79     7.79   37.72   3.31    15.28    22.44     1.97   437.86
  65    9.32     3.89     4.46    11.63     0.79     7.93   38.03   3.34    15.28    22.75     2.00   443.92
           *** 10 percent less auxiliary annual heating needed per year
  66    9.32     3.89     4.63    11.63     0.79     8.07   38.34   3.36    15.28    23.06     2.02   449.97
  67    9.32     3.89     4.81    11.63     0.79     8.21   38.65   3.39    15.28    23.37     2.05   456.03
  68    9.32     3.89     4.98    11.63     0.79     8.34   38.96   3.42    15.28    23.68     2.08   462.08
  69    9.32     3.89     5.15    11.63     0.79     8.48   39.27   3.45    15.28    23.99     2.10   468.13
  70    9.32     3.89     5.33    11.63     0.79     8.62   39.58   3.47    15.28    24.30     2.13   474.19
  71    9.32     3.89     5.50    11.63     0.79     8.76   39.89   3.50    15.28    24.61     2.16   480.24
  72    9.32     3.89     5.67    11.62     0.79     8.90   40.20   3.53    15.28    24.92     2.19   486.30
  73    9.32     3.89     5.85    11.62     0.79     9.03   40.51   3.55    15.28    25.23     2.21   492.35
  74    9.32     3.89     6.02    11.62     0.79     9.17   40.82   3.58    15.28    25.54     2.24   498.40
           *** Sawmill House
  75    9.32     3.89     6.19    11.62     0.79     9.31   41.13   3.61    15.28    25.85     2.27   504.46
  76    9.32     3.89     6.37    11.62     0.79     9.45   41.44   3.64    15.28    26.16     2.29   510.51
  77    9.32     3.89     6.54    11.62     0.79     9.59   41.75   3.66    15.28    26.47     2.32   516.57
  78    9.32     3.89     6.71    11.62     0.79     9.72   42.06   3.69    15.28    26.78     2.35   522.62
  79    9.32     3.89     6.89    11.62     0.79     9.86   42.37   3.72    15.28    27.09     2.38   528.68
  80    9.32     3.89     7.06    11.62     0.79    10.00   42.68   3.74    15.28    27.40     2.40   534.73
  81    9.32     3.89     7.23    11.61     0.79    10.14   42.99   3.77    15.28    27.71     2.43   540.78
           *** 10 percent more auxiliary annual heating needed per year
  82    9.32     3.89     7.41    11.61     0.79    10.28   43.30   3.80    15.28    28.02     2.46   546.84
  83    9.32     3.89     7.58    11.61     0.79    10.41   43.61   3.83    15.28    28.33     2.49   552.89
  84    9.32     3.89     7.75    11.61     0.79    10.55   43.92   3.85    15.28    28.64     2.51   558.95
  85    9.32     3.89     7.93    11.61     0.79    10.69   44.23   3.88    15.28    28.95     2.54   565.00
  86    9.32     3.89     8.10    11.61     0.79    10.83   44.54   3.91    15.28    29.26     2.57   571.06
  87    9.32     3.89     8.27    11.61     0.79    10.97   44.85   3.93    15.28    29.57     2.59   577.11
  88    9.32     3.89     8.45    11.61     0.79    11.10   45.16   3.96    15.28    29.88     2.62   583.16
  89    9.32     3.89     8.62    11.60     0.79    11.24   45.47   3.99    15.28    30.19     2.65   589.22
           *** 20 percent more auxiliary annual heating needed per year
  90    9.32     3.89     8.79    11.60     0.79    11.38   45.78   4.02    15.28    30.50     2.68   595.27

Column Headings -

  CeilT  Ceiling temperature value, 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 typical ceiling temperature in the Sawmill House is 75 degrees Fahrenheit.

As of August 8, 2009

Copyright ©2002, 2009 E. Stiltner.

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Updated '8-Aug-2009,11:50:38'