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Engineering Design Guide HBH/V SERIES Heat Controller, Inc.
Air Flow Correction Table
Air Flow Correction Table
Cooling Corrections
Ent Air
WB
º
F
Total Clg
Cap
Sens Clg Cap Multipliers - Entering DB
º
F
Power Heat of Rej
65 70 75 80 80.6 85 90 95
50 0.7800 0.9778 * * * * * * * 0.9972 0.8243
55 0.8327 0.8966 1.0556 * * * * * * 0.9980 0.8667
60 0.8954 0.7505 0.9184 1.1056 * * * * * 0.9988 0.9169
65 0.9681 0.6778 0.8992 1.1213 1.1480 1.3439 * * 0.9996 0.9747
66.2 0.9871 0.6103 0.8420 1.0698 1.0969 1.2938 * * 0.9999 0.9897
67 1.0000 0.5507 0.7782 1.0000 1.0262 1.2161 1.4266 * 1.0000 1.0000
70 1.0508 0.6408 0.8856 0.9135 1.1082 1.3087 1.4869 1.0005 1.0403
75 1.1435 0.6085 0.6403 0.8566 1.0663 1.2376 1.0014 1.1135
* Sensible capacity equals total capacity.
ARI/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.
Heating Corrections
Ent Air
DB
º
F
Htg Cap Power
Heat of
Ext
45 1.0507 0.7802 1.1314
50 1.0327 0.8227 1.0953
55 1.0195 0.8683 1.0646
60 1.0102 0.9168 1.0380
65 1.0033 0.9680 1.0139
68 1.0000 1.0000 1.0000
70 0.9979 1.0218 0.9908
75 0.9928 1.0781 0.9673
80 0.9866 1.1367 0.9419
Airow Cooling Heating
% of
Rated
Total
Capacity
Sensible
Capacity
Sens/Tot
Ratio
Power
Heat of
Rejection
Heating
Capacity
Power
Heat of
Extraction
75 0.9764 1.1134 0.9368 0.9605 0.8837 0.9200 0.9606 0.9605
81.25 0.9829 1.0789 0.9551 0.9730 0.9130 0.9384 0.9691 0.9722
87.5 0.9889 1.0484 0.9717 0.9837 0.9393 0.9548 0.9784 0.9826
93.75 0.9947 1.0222 0.9867 0.9927 0.9668 0.9739 0.9887 0.9919
100 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000
106.25 1.0050 0.9820 1.0116 1.0055 1.0434 1.0377 1.0122 1.0069
112.5 1.0096 0.9681 1.0216 1.0093 1.1016 1.0915 1.0253 1.0126
118.75 1.0138 0.9583 1.0299 1.0113 1.1790 1.1658 1.0394 1.0171
125 1.0177 0.9527 1.0365 1.0116 1.2798 1.2652 1.0544 1.0204
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