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The measurement of transient temperatures downstream of a 9.8 ft (3 m) poorly insulated duct, using a thermocouple having a finite time constant, can lead to measurable differences from temperatures measured immediately behind a cooling coil (and blower) under idealized conditions. In the example analyzed, a 90 difference in cooling during a six-minute blower on-time is computed, primarily due to transient effects.

Citation: ASHRAE Transactions, 1984, vol. 90, pt. 1A, Atlanta, GA

Product Details

Published:
1984
Number of Pages:
17
File Size:
1 file , 1000 KB
Product Code(s):
D-AT-2818