In a new high-efficiency furnace, natural gas, assumed to be 90% methane and 10% ethane (by volume)

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In a new high-efficiency furnace, natural gas, assumed to be 90% methane and 10% ethane (by volume) and 110% theoretical air each enter at 77 F, 14.7 lbf/in 2, and the products (assumed to be 100% gaseous) exit the furnace at 100 F,14.7 lbf/in 2 . What is the heat transfer for this process? Compare this to an older furnace where the products exit at 450 F, 14.7 lbf/in 2.


In a new high-efficiency furnace, natural gas, assumed to be 90%
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Fundamentals of Thermodynamics

ISBN: 978-0471152323

6th edition

Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen

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