For a stated sensible-heat exercise, use heat gain = 1.08 × airflow × temperature rise. At 1,000 cfm and 10,800 Btu/h of duct heat gain, what is the temperature rise?

Texas ACR A exam practice question · HVAC Systems

For a stated sensible-heat exercise, use heat gain = 1.08 × airflow × temperature rise. At 1,000 cfm and 10,800 Btu/h of duct heat gain, what is the temperature rise?

A1°F
B20°F
10°F
D100°F

Where to look it up

Explicit exercise assumptions; not a universal code requirement.

Why C is correct

Temperature rise = 10,800 / (1.08 × 1,000) = 10°F. The supplied approximation is for this exercise, not a universal limit for a particular insulation thickness or duct length.

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For a stated sensible-heat exercise, use heat gain = 1.08 × airflow × temperature rise. At 1,000 cfm and 10,800 Btu/h of duct heat gain, what is the temperature rise?

For a stated sensible-heat exercise, use heat gain = 1.08 × airflow × temperature rise. At 1,000 cfm and 10,800 Btu/h of duct heat gain, what is the temperature rise?

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