By opening and using this Manual the user agrees to the following restrictions, and if the recipient does not agree to these restrictions, the Manual should be promptly returned unopened to McGraw-Hill: This Manual is being provided only to authorized professors and instructors for use in preparing for the classes using the affiliated textbook. No other use or distribution of this Manual is permitted. This Manual may not be sold and may not be distributed to or used by any student or other third party. No part of this Manual may be reproduced, displayed or distributed in any form or by any means, electronic or otherwise, without the prior written permission of McGraw-Hill. Therefore, we must specify both direction and magnitude in order to describe heat transfer completely at a point. Temperature, on the other hand, is a scalar quantity.

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Limited distribution permitted only to teachers and educators for course preparation. If you are a student using this Manual, you are using it without permission. The amount of heat rate to be removed from the steel strip is to be determined. Assumptions 1 Steady operating conditions exist. Since slowing the conveyance speed allows more time for the steel strip to cool. The heating time is to be determined. Assumptions 1 Heat loss from the teapot is negligible.

Properties The average specific heats are given to be 0. Analysis We take the teapot and the water in it as the system, which is a closed system fixed mass. Therefore, the time needed for this heater to supply The power rating of the heater is to be determined.

Analysis We take the room as the system. The air is moved by a fan, and heat is lost through the walls of the duct. The power rating of the electric resistance heater is to be determined.

This assumption results in negligible error in heating and air-conditioning applications. Analysis We take the heating duct as the system. This is a control volume since mass crosses the system boundary during the process. The power rating of the electric heater and the temperature rise of air in the duct are to be determined.

K Table A Analysis a We first take the air in the room as the system. This is a constant volume closed system since no mass crosses the system boundary.


Heat and Mass Transfer 4th Edition Cengel Solution Manual




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