Air at 85°F, 1 atm, and 10% relative humidity enter an evaporative cooler operating at a steady state. The volumetric flow rate of the incoming air is 895 ft³/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. Determine the mass flow rate of the dry air, ma, in lb(dry air)/min. ma = 66.051 Determine the mass flow rate at which liquid enters, m, in lb(water)/min. mw = Ib(dry air)/min 0.2079 Ф2 = i Ib(water)/min. Determine the relative humidity at the exit. % just need the relative humidity thank you!

Air at 85°F, 1 atm, and 10% relative humidity enter an evaporative cooler operating at a steady state. The volumetric flow rate of the incoming air is 895 ft³/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. Determine the mass flow rate of the dry air, ma, in lb(dry air)/min. ma = 66.051 Determine the mass flow rate at which liquid enters, m, in lb(water)/min. mw = Ib(dry air)/min 0.2079 Ф2 = i Ib(water)/min. Determine the relative humidity at the exit. % just need the relative humidity thank you!

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter35: Comfort And Psychrometrics

Section: Chapter Questions

Problem 3RQ: Lower room temperatures can be offset in winter by A. lowering the relative humidity. B. being very...

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