Dwiel House Heat Loss
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NameincludefactorR-ValuedT (C)Area (ft^2)hrs/
day
BTU/daywatt hours/dayArea m^2suns angle in winter40.00
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Losses15.0loss of afternoon sun0.80
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Solid Brick Vertical (current)1.256.08.372006.69% of solar radiation through window0.61
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Roof112.78.340053,33315,63037.16SGHC0.70
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Windows (simple)112.78.32002426,6677,81518.58angle of sun mult1.19
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Windows (day)13.21.3200140018.58indoor temp65.00indoor K291.48
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Windows (night) half wall insulation121.217.0200100018.58average outdoor temp for 1 day50.00outdoor K283.15
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Windows (night) 3" thick indoor shutters16.317.0200100018.58dt15.00
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Foundation Leak (current)12.48.378007.25
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Foundation Leak (air entrained?)1.552.28.31530014.21thickness of wall24.00
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Foundation Leak (simple fix)1.50.88.339003.62thickness of inner wall12.00
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Foundation Leak (double fix wall)112.88.339003.62thickness of insulation6.00
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Foundation Leak (double fix floor)1118.28.31142,25566110.59thickness of outer wall6.00
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Walls (all but South)1126.18.31,11215,3384,495103.311
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Walls (South)1121.68.31462,43371313.561
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Vertical Pillars (concrete)115.48.3643,3841,2505.951
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Vertical Pillars (concrete).2118.48.3641,8608045.951
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Vertical Pillars (concrete).31111.48.3641,1385925.951
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Vertical Pillars (concrete).41114.48.3647174695.951cubic feet of rice hulls walls1,258.00
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Vertical Pillars (concrete).51117.48.3644413885.951cubic feet of rice hulls ceiling800.00
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Vertical Pillars (concrete).61120.48.3642473315.951cubic feet of rice hulls total2,058.00
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Vertical Pillars (concrete).71123.48.3641022895.951cost of rice hulls per cubic foot0.16
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Vertical Pillars (concrete).81126.48.364-102565.951329.28
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Vertical Pillars (concrete).9129.48.364005.951
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Vertical Pillars (concrete) -1126.18.3648832595.951
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Bond Beam (concrete)124.08.31,15200107.02
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Vertical Pillars (wood)129.48.3100009.29
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Bond Beam (wood)132.68.3102009.48days1.00
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Glass Door Threshold11.48.36000.56
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Kitchen Door Threshold11.48.36000.56southern glass m^214.86
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Glass Door Threshold (6in wood)119.88.36220650.56average kwh/m^2/day2,500.00
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Kitchen Door Threshold (6in wood)119.88.36220650.56
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2nd Story Bond Beam?000.00southern glass
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Walls One Layer119.58.31,25800116.871st floor70.25
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Floor1121.05.64004,5711,34037.16btu/hourover greenhouse29.17
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Floor110.04000037.160bedroom31.50
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Door West112.88.3162,0806101.51
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Door South12.88.31440013.38
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Concrete Pillars113.08.31440013.38
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Concrete Pillars118.01.31440013.38
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11.511.14000037.160
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16.070.0100009.29square feet of south glass160.00
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140.020.01000.09square meters14.86
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Radiantincludefactoremissivity-Area (ft^2)non-south glass40.00
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South Glass110.1120031392square feet all house200.00
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total115,31133,794
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Gains
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1 Human Body17,200
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1 hour cooking15,000
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200W average electric load116,000
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Sun64,82518,9980.00
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total93,02527,263-17.79
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Necessary size of secondary heater---->22,2856,531-4.26
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Sources of External Energy
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Radiant Floor288,00000.00
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Extra Capacitytotal265,715
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thermal masses (btu | 15 dT)
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gallonscubic feetliterskg/Lheat capacity J/kgJ/LJoules / degreeBTU / degreeBTU / 15 FBTU / 126 F (70 C)BTU / 110 F(storage at 180F indoor at 70F)
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50 gallon water tank507189.314,1864186792,2017516,25745,886
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500 gallon water tank500671,892.514,18641867,922,0057,50962,572458,860
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5000 gallon water tank5,00066818,925.014,186418679,220,05075,086625,7184,588,596
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floor2,99240011,320.01.91,2002306.6587226,111,37724,749206,240
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inside wall9,4101,25835,601.41.91,2002306.6587282,120,28077,835648,625
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outside wall10,2181,36638,657.81.91,2002306.6587289,170,35184,517704,310
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floor2,99240011,320.01.92,0003844.431243,518,96141,248343,733
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inside wall9,4101,25835,601.41.92,0003844.4312136,867,133129,7251,081,042
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outside wall10,2181,36638,657.81.92,0003844.4312148,617,252140,8621,173,850
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deep deep floor8,977120033,960.01.92,0003844.4312130,556,884123,7441,031,200
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wood floor28137.51,061.30.42,000854906,3088597,158
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annual heat storage4000113,200.01.92,0003844.4312435,189,612412,4803,437,33528,873,612
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floor1,4962005,660.01.92,0003844.431221,759,48120,624171,867
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rice hulls0.12,000288
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rhvolsurface sidesurface topsurface areafoorprint
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cylinder8.617.23,996929.44651,394232.35
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lwhvolsurface areafootprintnumber of CEBShours of pressinginsulation top/bottominsulation sidestotal insulationcost
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box151515.03,3751350225.001350022.54509001,350.002025
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radiant heat transfer through windows
98
0.11 * 5.6703*10^-8 (W/m^2) * ((294)^4 - (255)^4)) * 160 square feet * hour in btu
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