Specific volume 7.40 m3 of air per minute at 31˚C DBT and 18.5˚C WBT is passed over the cooling
coil whose surface temperature is 4.4˚C. The coil cooling capacity is 3.56 tons of refrigeration
under the given condition of air. Determine DBT and WBT of the air leaving the cooling coil.
Mass flow rate = 7.40 m3 /min = 1.23 *7.40 =9.102 kg/min = 0.1517 kg/s
Heat observed by the coil from air
The negative sign shows heat is absorbed.
The negative sign shows heat is absorbed.
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