2.44 As shown in Fig. P2.44, the 6-in.-thick exterior wall of a building has an average thermal conductivity of 0.32 Btu/h ft R. At steady state, the temperature of the wall decreases linearly from T to T on the outer surface. The outside ambient air temperature is To coefficient is 5.1 Btu/h ft R. Determine (a) the temperature T in °F, and (b) the rate of heat transfer through the wall, in Btu/h per ft of surface area. 70°F on the inner surface 25°F and the convective heat transfer

2.44 As shown in Fig. P2.44, the 6-in.-thick exterior wall of a building has an average thermal conductivity of 0.32 Btu/h ft R. At steady state, the temperature of the wall decreases linearly from T to T on the outer surface. The outside ambient air temperature is To coefficient is 5.1 Btu/h ft R. Determine (a) the temperature T in °F, and (b) the rate of heat transfer through the wall, in Btu/h per ft of surface area. 70°F on the inner surface 25°F and the convective heat transfer

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

2.44 As shown in Fig. P2.44, the 6-in.-thick exterior wall
of a building has an average thermal conductivity of
0.32 Btu/h ft °R. At steady state, the temperature of the
wall decreases linearly from T
to T, on the outer surface. The outside ambient air
temperature is To
coefficient is 5.1 Btu/h ft °R. Determine (a) the temperature
T in °F, and (b) the rate of heat transfer through the wall,
in Btu/h per ft of surface area.
70°F on the inner surface
25°F and the convective heat transfer

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