This preview shows page 1. Sign up to view the full content.
Unformatted text preview: k = 0.26 Btu/h ft F and =1.4 106 ft 2 /s. Air 23 F Meat 50 F Analysis The average heat transfer coefficient during this cooling process is determined from the transient temperature charts for a flat plate as follows: ) 13a 4 (Fig. 7 . 1 481 . 23 50 23 36 968 . ft) (3/12 s) 3600 ft/s)(12 10 (1.4 6 = = = = = = Bi T T T T L t i o Therefore, F Btu/h.ft. 1.5 = = = ft (3/12) F)(1/0.7) Btu/h.ft. (0.26 L kBi h Discussion We could avoid the uncertainty associated with the reading of the charts and obtain a more accurate result by using the oneterm solution relation for an infinite plane wall, but it would require a trial and error approach since the Bi number is not known. 446...
View
Full
Document
This note was uploaded on 01/19/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.
 Fall '10
 Dr.DanielArenas
 Thermodynamics, Mass, Heat

Click to edit the document details