Problem 5 Space, at sea level, is to be maintained at 75°f db and -50%. 100% fresh air at 110°F db and o-20% is supplied to the heat recovery unit which uses the return air to cool the fresh air before draw off this air as shown in the figure. The heat recovery unit will reduce the fresh air by 20°F. The surface temperature of the cooling coil is 50 °F and delivers air to the space at 60°F db. d. Draw the process on the psychrometric chart. e. What is the off coil (point 3) relative humidity. What is the wet bulb temperature of the fresh air leaving the heat recovery unit (point 2)? f. How much heat was removed by the cooling coil per unit mass of dry air. g. How much energy was saved by using the heat recovery unit per unit mass of dry air?

Problem 5 Space, at sea level, is to be maintained at 75°f db and -50%. 100% fresh air at 110°F db and o-20% is supplied to the heat recovery unit which uses the return air to cool the fresh air before draw off this air as shown in the figure. The heat recovery unit will reduce the fresh air by 20°F. The surface temperature of the cooling coil is 50 °F and delivers air to the space at 60°F db. d. Draw the process on the psychrometric chart. e. What is the off coil (point 3) relative humidity. What is the wet bulb temperature of the fresh air leaving the heat recovery unit (point 2)? f. How much heat was removed by the cooling coil per unit mass of dry air. g. How much energy was saved by using the heat recovery unit per unit mass of dry air?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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