Cold Weather Products Catalog
Technical
Technical Information General Industrial SizingGuide
CHROMALOX General Industrial Sizing Guide Heat Loss Calculation- Indoor
Job Name: Location: Bid Number:
Date: Room:
Reference:
Voltage:
V Phase:
Room Size
Length:
ft. Width:
Ceiling Height:
ft.
ft.
Total Square Footage:
square feet
Heater Mounting Height:
ft.
Design Information
Ceiling R-Factor: Wall R-Factor:
Outside Design Temperature: Desired Inside Temperature:
F F F
Temperature Rise:
Air Changes Per Hour:
cubic foot per hour
Calculation
Item Area sq-ft
X U-Factor
= BTU/Hr/Degree F
= = = = =
Windows Doors Net Wall
sq-ft sq-ft sq-ft sq-ft
X X X X X
Roof
Floor Perimeter *
ft
TOTAL =
Item A
BTU/Hr/degree F
* For floor perimeter use U-factor of 1.2, 0.7, or 0.6 for exposed, 1" insulation, or 2" insulation respectively
Air Change Loss
Cubic foot per hour X 0.019 BTU/cubic ft. = BTU/hr/degree F
Item B
cubic ft./hr
X
0.019 BTU/cubic ft. =
TOTAL Item A + Item B =
BTU/Hr/degree F
Item C
Convert to Watts = Total / 3.412 =
Watts/Hr/degree F
TOTAL HEATING REQUIREMENT
Item C x Temperature Rise = Watts/Hr Watts/Hr/degree F X
=
degree F
Total Watts/Hr.
Heat Loss Calculation Form for General Industrial Applications
158
Made with FlippingBook Ebook Creator