A stream of air at 37C and 50% relative humidity flowing at a rate of 1250kg / h is to be cooled to 15C and dehumidified in a spray tower. The air is saturated as it emerges from the tower. Liquid water leaves the tower at 12C ; some is withdrawn, and the rest is cooled and recirculated. No heat is transferred between the tower and its surroundings . Calculate the rate (kg / h) at which water must be withdrawn from the recirculation loop and the heat duty on the cooler (kW). (Suggestion Use an overall energy balance for the latter calculation)
A stream of air at 37C and 50% relative humidity flowing at a rate of 1250kg / h is to be cooled to 15C and dehumidified in a spray tower. The air is saturated as it emerges from the tower. Liquid water leaves the tower at 12C ; some is withdrawn, and the rest is cooled and recirculated. No heat is transferred between the tower and its surroundings . Calculate the rate (kg / h) at which water must be withdrawn from the recirculation loop and the heat duty on the cooler (kW). (Suggestion Use an overall energy balance for the latter calculation)
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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A stream of air at 37C and 50% relative humidity flowing at a rate of 1250kg / h is to be cooled to 15C and dehumidified in a spray tower. The air is saturated as it emerges from the tower. Liquid water leaves the tower at 12C ; some is withdrawn, and the rest is cooled and recirculated. No heat is transferred between the tower and its surroundings . Calculate the rate (kg / h) at which water must be withdrawn from the recirculation loop and the heat duty on the cooler (kW). (Suggestion Use an overall energy balance for the latter calculation)
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