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7- Illustrates a composite wall. The wall is composed of two materials (A with kA = 1 W/m-K and B with kB = 5 W/m-K), each has thickness L = 1.0 cm. The surface of the wall at x = 0 is perfectly insulated. A very thin heater is placed between the insulation and material A; the heating element provides q" = 5000 W/m2 of heat. The surface of the wall at x = 2L is exposed to fluid at Tf, = 300 K with heat transfer coefficient in h = 100 W/m2-K. Draw a resistance network to represent this problem; and calculate the value of each resistance.

7- Illustrates a composite wall. The wall is composed of two materials (A with kA = 1 W/m-K and B with kB = 5 W/m-K), each has thickness L = 1.0 cm. The surface of the wall at x = 0 is perfectly insulated. A very thin heater is placed between the insulation and material A; the heating element provides q" = 5000 W/m2 of heat. The surface of the wall at x = 2L is exposed to fluid at Tf, = 300 K with heat transfer coefficient in h = 100 W/m2-K. Draw a resistance network to represent this problem; and calculate the value of each resistance.

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7- Illustrates a composite wall. The wall is composed of two materials (A with kA = 1 W/m-K and B with kB = 5 W/m-K), each has thickness L = 1.0 cm. The surface of the wall at x = 0 is perfectly insulated. A very thin heater is placed between the insulation and material A; the heating element provides q" = 5000 W/m2 of heat. The surface of the wall at x = 2L is exposed to fluid at Tf, = 300 K with heat transfer coefficient in h = 100 W/m2-K. Draw a resistance network to represent this problem; and calculate the value of each resistance.
Transcribed Image Text:7- Illustrates a composite wall. The wall is composed of two materials (A with kA = 1 W/m-K and B with kB = 5 W/m-K), each has thickness L = 1.0 cm. The surface of the wall at x = 0 is perfectly insulated. A very thin heater is placed between the insulation and material A; the heating element provides q" = 5000 W/m2 of heat. The surface of the wall at x = 2L is exposed to fluid at Tf, = 300 K with heat transfer coefficient in h = 100 W/m2-K. Draw a resistance network to represent this problem; and calculate the value of each resistance.
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