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H.W 1. A plant wishes to dry a certain type of fiberboard. To determine drying characteristics, a sample of 0.3 × 0.3 m with edges sealed was suspended from a balance and exposed to a current of hot dry air. The initial moisture content was 75%. The sheet lost weight at the rate of 1 104 Kg/s unit the moisture content fell to 60%. It was established that the equilibrium moisture content was 10 %. The dry mass of the sample was 0.90 Kg. All moisture contents were on a wet basis. Determine the time for drying the sheets from 75% to 20% moisture under the same drying conditions?

H.W 1. A plant wishes to dry a certain type of fiberboard. To determine drying characteristics, a sample of 0.3 × 0.3 m with edges sealed was suspended from a balance and exposed to a current of hot dry air. The initial moisture content was 75%. The sheet lost weight at the rate of 1 104 Kg/s unit the moisture content fell to 60%. It was established that the equilibrium moisture content was 10 %. The dry mass of the sample was 0.90 Kg. All moisture contents were on a wet basis. Determine the time for drying the sheets from 75% to 20% moisture under the same drying conditions?

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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H.W 1. A plant wishes to dry a certain type of fiberboard. To determine drying characteristics, a sample of 0.3 × 0.3 m with edges sealed was suspended from a balance and exposed to a current of hot dry air. The initial moisture content was 75%. The sheet lost weight at the rate of 1 104 Kg/s unit the moisture content fell to 60%. It was established that the equilibrium moisture content was 10 %. The dry mass of the sample was 0.90 Kg. All moisture contents were on a wet basis. Determine the time for drying the sheets from 75% to 20% moisture under the same drying conditions?
Transcribed Image Text:H.W 1. A plant wishes to dry a certain type of fiberboard. To determine drying characteristics, a sample of 0.3 × 0.3 m with edges sealed was suspended from a balance and exposed to a current of hot dry air. The initial moisture content was 75%. The sheet lost weight at the rate of 1 104 Kg/s unit the moisture content fell to 60%. It was established that the equilibrium moisture content was 10 %. The dry mass of the sample was 0.90 Kg. All moisture contents were on a wet basis. Determine the time for drying the sheets from 75% to 20% moisture under the same drying conditions?
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