TECHNICAL
KILOWATT HOURS TO HEAT AIR
Amount of Air
Temperature Rise
°F
50
100
150
200
250
300
350
400
450
500
600
CFM
CMH
°C
10
37.8
66
93
121
149
177
204
232
260
316
100
58.85
1.7
3.3
5.0
6.7
8.3
10.0
11.7
13.3
15.0
16.7
20.0
200
117.70
3.3
6.7
10.0
13.3
16.7
20.0
23.3
26.7
30.0
33.3
40.0
300
176.55
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
60.0
400
235.40
6.7
13.3
20.0
26.7
33.3
40.0
46.7
53.3
60.0
66.7
80.0
500
294.25
8.3
16.7
25.0
33.3
41.7
50.0
58.3
66.7
75.0
83.3
100.0
600
353.10
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
120.0
700
411.95
11.7
23.3
35.0
46.7
58.3
70.0
81.7
93.3
105.0
116.7
140.0
800
470.80
13.3
26.7
40.0
53.3
66.7
80.0
93.3
106.7
120.0
133.3
160.0
900
529.65
15.0
30.0
45.0
60.0
75.0
90.0
105.0
120.0
135.0
150.0
180.0
1000
588.50
16.7
33.3
50.0
66.7
83.3
100.0
116.7
133.3
150.0
166.7
200.0
1100
647.35
18.3
36.7
55.0
73.3
91.7
110.0
128.3
146.7
165.0
183.3
220.0
1200
706.20
20.0
40.0
60.0
80.0
100.0
120.0
140.0
160.0
180.0
200.0
240.0

Use the maximum anticipated airflow. This equation assumes insulate duct (negtigible heat loss)

Equation to calculate kilowatts:

KW = Cubic Meters/Min* x Temperature Rise (°C)  
 
47
 

                                    

For Compressed Air:

KW = Cubic Meters/Min* x Temperature Rise (°C) X Density (kg/m3)**
 
 57.5
 

*Measured at normal temperature and pressure.

*Measured at heater system inlet temperature and pressure.


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