Heat Loss Calculations:
     
 
Walls  
Material R Value
Outside air film 0.170
3/4 plywood 0.93
air vapor 0.68
drywall 0.32
   
   
Total R=2.1
U=1/ R Total U=0.476
   
times fudge factor x1.025
  U=0.488 Btu/hr ft 2 F
Floor  
Material R Value
6" concrete 1.20
   
Total R=1.20
U=1/ R Total U=0.833 Btu/hr ft 2 F
Ceiling  
Material R Value
Outside air film 0.170
3/4 plywood 0.93
air vapor 0.68
accoustical tile 1.25
asphalt roll roofing 0.15
   
Total R=3.18
U=1/ R Total U=0.314
   
times fudge factor x1.025
  U=0.322 Btu/hr ft 2 F
Glazing  
Material R Value
Single Pane N/A
   
Total N/A
U=1/ R Total U=1.11 Btu/hr ft 2 F
      Heat Loss = (U) (Area) (70 Fo - 22Fo)  
   
Element U Btu/hr ft 2 F Area Ft2 Temp Diff. Heat Loss Btu/ h
Walls 0.488 418.5 48 Fo 9800
Ceiling 0.322 180 48 Fo 2780
Floor 0.833 180 48 Fo 7200
Glazing 1.11 58.5 48 Fo 3116
         
      Total Loss 22900 Btu/h
     
     
 
     
   
 
Introduction Methodology Data
Analysis Conclusions References & Acknowledgements