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In an air drier, part of the effluent air stream is to be recycled in an effort to control the inlet water content (i.e., humidity). The figure shown is an schematic representation of the process. The solids contain 20% water and 1,000 kg/hr are to be handled. The dried solids are to contain a maximum of 5% water. The partial pressure of water vapor in the fresh air is 10 mm Hg and in the outlet must be limited to 200 mm Hg. The recycle stream is to be regulated so that the partial pressure of water input in air to the drier shall be 50 mm Hg. Calculate the rates of fresh air, recylce air, and the total air to the drier. Assume that the process operates at a constant pressure of one standard atmosphere.

In an air drier, part of the effluent air stream is to be recycled in an effort to control the inlet water content (i.e., humidity). The figure shown is an schematic representation of the process. The solids contain 20% water and 1,000 kg/hr are to be handled. The dried solids are to contain a maximum of 5% water. The partial pressure of water vapor in the fresh air is 10 mm Hg and in the outlet must be limited to 200 mm Hg. The recycle stream is to be regulated so that the partial pressure of water input in air to the drier shall be 50 mm Hg. Calculate the rates of fresh air, recylce air, and the total air to the drier. Assume that the process operates at a constant pressure of one standard atmosphere.

Introduction to Chemical Engineering Thermodynamics
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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In an air drier, part of the effluent air stream is to be recycled in an effort to control the inlet water content (i.e., humidity). The figure shown is an schematic representation of the process. The solids contain 20% water and 1,000 kg/hr are to be handled. The dried solids are to contain a maximum of 5% water. The partial pressure of water vapor in the fresh air is 10 mm Hg and in the outlet must be limited to 200 mm Hg. The recycle stream is to be regulated so that the partial pressure of water input in air to the drier shall be 50 mm Hg. Calculate the rates of fresh air, recylce air, and the total air to the drier. Assume that the process operates at a constant pressure of one standard atmosphere.

Recycle Air DRIER Fresh air Wet solids Dried solids 20% H,0 5% H,0 1,000 kg/hr
Transcribed Image Text:Recycle Air DRIER Fresh air Wet solids Dried solids 20% H,0 5% H,0 1,000 kg/hr
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