Q1 Passage of an electric current through a long conducting rod of radius r, and thermal conductivity k, results in uniform volumetric heating at a rate of 4. The conduct- ing rod is wrapped in an electrically nonconducting cladding material of outer radius r, and thermal conduc- tivity ke, and convection cooling is provided by an adjoining fluid. Conducting rod, ġ, k, Th Cladding, ke For steady-state conditions, write appropriate forms of the heat equations for the rod and cladding. Express ap- propriate boundary conditions for the solution of these equations.

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Hello sir Can you solve this problem because i did'nt understand about subject (heat transfer)
Q1
Q2
Passage of an electric current through a long conducting Consider a composite wall that includes an 8-mm-thick
rod of radius r, and thermal conductivity k, results in
uniform volumetric heating at a rate of ģ. The conduct-
ing rod is wrapped in an electrically nonconducting faced, 28 kg/m'), and a 12-mm layer of gypsum (vermi-
cladding material of outer radius r, and thermal conduc- culite) wall board.
tivity ke, and convection cooling is provided by an
adjoining fluid.
hardwood siding, 40-mm by 130-mm hardwood studs
on 0.65-m centers with glass fiber insulation (paper
Wood sidin
Stud
130 mm
Insulation
Conducting
rod, ġ, k,
Wall board
40 mm
What is the thermal resistance associated with a wall
111
that is 2.5 m high by 6.5 m wide
Th
PROPERTIES: Table A-3 (T= 300K): Hardwood siding. ka = 0.094 W/m K; Hardwood,
Cladding, ke
kg =0.16 W/m K; Gypsum, kç = 0.17 W/m K; Insulation (glass fiber paper faced, 28 kg/m').
kp = 0.038 W/m K.
For steady-state conditions, write appropriate forms of
the heat equations for the rod and cladding. Express ap-
propriate boundary conditions for the solution of these
equations.
Transcribed Image Text:Q1 Q2 Passage of an electric current through a long conducting Consider a composite wall that includes an 8-mm-thick rod of radius r, and thermal conductivity k, results in uniform volumetric heating at a rate of ģ. The conduct- ing rod is wrapped in an electrically nonconducting faced, 28 kg/m'), and a 12-mm layer of gypsum (vermi- cladding material of outer radius r, and thermal conduc- culite) wall board. tivity ke, and convection cooling is provided by an adjoining fluid. hardwood siding, 40-mm by 130-mm hardwood studs on 0.65-m centers with glass fiber insulation (paper Wood sidin Stud 130 mm Insulation Conducting rod, ġ, k, Wall board 40 mm What is the thermal resistance associated with a wall 111 that is 2.5 m high by 6.5 m wide Th PROPERTIES: Table A-3 (T= 300K): Hardwood siding. ka = 0.094 W/m K; Hardwood, Cladding, ke kg =0.16 W/m K; Gypsum, kç = 0.17 W/m K; Insulation (glass fiber paper faced, 28 kg/m'). kp = 0.038 W/m K. For steady-state conditions, write appropriate forms of the heat equations for the rod and cladding. Express ap- propriate boundary conditions for the solution of these equations.
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