Question7: Calculate the ratio of the two heating times (for a single board versus whenthey are stacked), and explain the ratio.Note1: Don’t use Heissler charts to answer this question.Note2: You’re free to make assumptions regarding any value you think you need in order to solve the problem. Just explain your reasoning behind your assumption in a logical manner.please explain step by step for better understanding, thanks Heat sterilization of lumber, timbers, and pallets is used to kill insects toprevent their transfer between countries in international trade. This is analogous tofood sterilization by heat. A typical requirement here is that the slowest heating pointof any wood configuration be held at 56 °C for 30 minutes. Consider hot air heating ofwooden boards that maintains their surface temperature at 70 °C. The boards arestacked outside and in the winter time they can be considered to be at 0 °C when theyare brought in for heating. The thermal diffusivity of the wood is 9*10-8 m?/s.

Given: Surface temperature to be maintained is 70°C Thermal diffusivity of the wood is 9×10-8m2/s…

Answered: Question7: Calculate the ratio of the…

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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Question7: Calculate the ratio of the two heating times (for a single board versus when
they are stacked), and explain the ratio.

Note1: Don’t use Heissler charts to answer this question.
Note2: You’re free to make assumptions regarding any value you think you need in order to solve the problem. Just explain your reasoning behind your assumption in a logical manner.

please explain step by step for better understanding, thanks