Load & DesignQuestion 6 of 110
Using the sensible heat formula, how much sensible heat is removed when 1,200 CFM of air is cooled through a 20 degree F temperature drop?
a.12,960 BTU/hr
b.18,000 BTU/hr
c.25,920 BTU/hr
d.32,400 BTU/hr
Explanation
Sensible heat = 1.08 x 1,200 CFM x 20 F = 25,920 BTU/hr. This calculation lets a technician confirm the coil is delivering close to its rated capacity. A result far below expected suggests low airflow or an undercharged system.
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