9. A large warehouse located at an altitude of 1500 m has to be maintained at aDBT of 270C and a relative humidity of 50% using a direct evaporative coolingsystem. The outdoor conditions are 330C (DBT) and 150C (WBT). The coolingload on the warehouse is 352 kW. A supply fan located in the downstream of theevaporative cooler adds 15 kW of heat. Find the required mass flow rate of air.Assume the process in evaporative cooler to follow a constant WBT.10. A winter air conditioning system maintains a building at 210C and 40% RH.The outdoor conditions are OoC (DBT) and 100% RH. The sensible load load onthe building is 100 kW, while the latent heating load is 25 kW. In the airconditioning system, 50% of the outdoor air (by mass) is mixed with 50% of theroom air. The mixed air is heated in a pre-heater to 250C and then requiredamount of dry saturated steam at 1 atm. pressure is added to the pre-heated airin a humidifier. The humidified air is then heated to supply temperature of 450Cand is then supplied to the room. Find a) The required mass flow rate of supplyair, b) Required amount of steam to be added, and c) Required heat input inpre-heater and re-heater. Barometric pressure = 1atm..%3D

The barometric pressure at 1500 meters is 84.436 kPa. The outside conditions are the evaporative…

9. A large warehouse located at an altitude of 1500 m has to be maintained at a DBT of 270C and a relative humidity of 50% using a direct evaporative cooling system. The outdoor conditions are 330C (DBT) and 150C (WBT). The cooling load on the warehouse is 352 kW. A supply fan located in the downstream of the evaporative cooler adds 15 kW of heat. Find the required mass flow rate of air. Assume the process in evaporative cooler to follow a constant WBT.

9. A large warehouse located at an altitude of 1500 m has to be maintained at a DBT of 270C and a relative humidity of 50% using a direct evaporative cooling system. The outdoor conditions are 330C (DBT) and 150C (WBT). The cooling load on the warehouse is 352 kW. A supply fan located in the downstream of the evaporative cooler adds 15 kW of heat. Find the required mass flow rate of air. Assume the process in evaporative cooler to follow a constant WBT.

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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your A bank of 120-employees is maintained at 24°C db and 50% RH. The heat gain due to heat transfer through walls, roof, ..etc is 10 kW. The outside air temperature is 35°C and its relative humidity is 60%. Calculate the followings: (a) Ventilation air required. (b) Sensible and latent heat gains due to occupants. (CLF = 0.86) (c) Volumetric flow rate of supply air if the supply temperature is 18°C. (d) Volumetric flow rate of moisture removed. (e) Sensible heat ratio of the theater. (f) Relative humidity of the supply air
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