Full Load Correction Factors - Heat Controller HEV Series Engineering Design Manual

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Full Load Correction Factors

Air Flow Correction Table
Air ow
% of
Rated Capacity
80%
85%
90%
95%
100%
105%
110%
Entering Air Correction Table
Entering Heating
Air DB°F Capacity
50
1.030
55
1.026
60
1.020
65
1.011
70
1.000
75
0.989
80
0.978
Entering
Total
Air
Capacity
WB°F
45 0.638
50 0.720
55 0.803
60 0.885
65 0.967
67 1.000
70 1.049
75 1.132
Cooling
Total Sensible
S/T
Capacity
0.976 0.919 0.941
0.984 0.941 0.957
0.990 0.962 0.972
0.996 0.982 0.986
1.000 1.000 1.000
1.003 1.017 1.014
1.005 1.032 1.027
Heating
Heat of
Power
Extraction
0.808 1.092
0.858 1.073
0.905 1.052
0.951 1.027
1.000 1.000
1.054 0.971
1.114 0.940
Sensible Cooling Capacity Multiplier -
65 70 75
* * *
* * *
1.044 * *
0.751 0.927 1.114
0.693 0.886
0.607 0.798
0.669
HEV-HEH SEriES
HEV/H SERIES
Heat of Heating
Power
Rejection Capacity
0.939 0.969
0.953 0.977
0.968 0.986
0.983 0.993
1.000 1.000
1.018 1.006
1.036 1.012
* = Sensible capacity equals total capacity
AHRI/ISO/ASHRAE 13256-1 uses entering air conditions of Cooling - 80.6°F
DB/66.2°F WB,
and Heating - 68°F DB/59°F WB entering air temperature
Cooling
Entering DB °F
80 85 90
* * *
* * *
* * *
* * *
1.089 1.300 *
1.000 1.211 1.432
0.866 1.076 1.299
0.644 0.848 1.077
21
Heating
Heat of
Power
Extraction
0.983 1.040 0.967
0.987 1.018 0.978
0.991 1.004 0.988
0.996 0.998 0.995
1.000 1.000 1.000
1.005 1.010 1.003
1.009 1.028 1.004
Heat of
Power
Rejection
95 100
* * 0.914 0.694
* * 0.934 0.763
* * 0.953 0.833
* * 0.973 0.903
* * 0.992 0.972
* * 1.000 1.000
* * 1.012 1.042
1.329 1.605 1.031 1.111
Design Guide
Engineering Design G