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

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