Consider steady-state conditions for one-dimensional conduction in a plane wall having a thermal conductivity k = 50 W/m-K and a thickness L = 0.35 m, with no internal heat generation.
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- What are the important modes of heat transfer for a person sitting quietly in a room? What if the person is sitting near a roaring fireplace?2.34 Show that the temperature distribution in a sphere of radius . made of a homogeneous material in which energy is released at a uniform rate per unit volume , isConsider steady-state conditions for one-dimensional conduction in a plane wall having a thermal conductivity k = 60 W/m-K and a thickness L = 0.4 m, with no internal heat generation. T1- -T2 L Determine the heat flux, in kW/m?, and the unknown quantity for each case. Case T1(°C) T2 (°C) dT/dx(K/m) qf (kW/m²) 1 50 -20 -30 -10 70 i 160 40 -80 5 30 200 4-
- Consider steady-state conditions for one-dimensional conduction in a plane wall having a thermal conductivity k = 40 W/m-K and a thickness L = 0.3 m, with no internal heat generation. T1 -T2 L Determine the heat flux, in kW/m?, and the unknown quantity for each case. Case T1(°C) T2(°C) dT/dx(K/m) q (kW/m?) 1 50 -20 -233.333 9333.32 2 -30 -10 66.667 75466.67 3 70 117.85 160 6400 4 63.85 40 -80 3200 5 -30.15 30 200 8000Consider steady-state conditions for one-dimensional conduction in a plane wall having a thermal conductivity k = 40 W/m-K and a thickness L = 0.3 m, with no internal heat generation. -T2 L Determine the heat flux, in kW/m², and the unknown quantity for each case. Case T1(°C) T2(°C) dT/dx(K/m) q (kW/m?) 1 50 -20 i i 2 -30 -10 i i 3 70 i 160 i 4 i 40 -80 i 5 i 30 200 iConsider steady-state conditions for one-dimensional conduction in a plane wall having a thermal conductivity k = W/m-K and a thickness L = 0.4 m, with no internal heat generation. 60 T1 -T2 L Determine the heat flux, in kW/m?, and the unknown quantity for each case. Case T1 (°C) T2 (°C) dT/dx(K/m) 9 (kW/m²) 1 50 -20 i i 2 -30 -10 i i 3 70 i 160 i 4 i 40 -80 i i 30 200 i
- Consider steady-state conditions for one-dimensional conduction in a plane wall having a thermal conductivity k = 40 W/m-K and a thickness L = 0.4 m, with no internal heat generation. -T2 L Determine the heat flux, in kW/m2, and the unknown quantity for each case. Case T1(°C) T2(°C) dT/dx(K/m) 9% (kW/m²) 1 50 -20 i i -30 -10 i i 3 70 i 160 i 4 i 40 -80 i i 30 200 i LOConsider steady-state conditions for one-dimensional conduction in a plane wall having a thermal conductivity k = 40 W/m-K and a thickness L = 0.3 m, with no internal heat generation. T2 L Determine the heat flux, in kW/m?, and the unknown quantity for each case. T1 (°C) T2(°C) dT/dx(K/m) 9 (kW/m?) Case 1 50 -20 i i 2 -30 -10 i 70 i 160 i 40 -80 i 5 i 30 200 iConsider steady-state conditions for one-dimensional conduction in a plane wall having a thermal conductivity k = 40 W/m•K and a thickness L = 0.3 m, with no internal heat generation. L Determine the heat flux, in kW/m2, and the unknown quantity for each case. Case T1(°C) T2(°C) dT/dx(K/m) (kW/m²) 1 50 -20 i i 2 -30 -10 i 3 70 i 160 i 4 i 40 -80 i i 30 200 i
- 0/1 The thermal conductivity of Aluminum material at127°Cand 527 C are 240 and 218 W/m. K, respectively. Determine ko and B, constants for the used material. k=ko (1 + BT) is assumed with T in °C. 0/2 Heat is generated in a slab of 120 mm thickness with a conductivity of 200 W/m K at a rate of 106W/m. Determine the temperature at the mid and quarter planes if the surface of the solid on both sides are exposed to convection at 30°C with a convection coefficient of 500 W/m K. Also find the heat flow rate at these planes and the temperature gradients at these planes. 0/3 1. Determine the heat flow for (i) rectangular fins and (ii) triangular fin of 20 mm length and 3 mm base thickness. Thermal conductivity = 45 W/m K. Conwection coefficient h= 100 W/m K, base temperature = 120°C surrounding fluid temperature = 35°C. Determine also the fin effectiveness. 2. A circumferential fin on a pipe of 50 mm OD is 3 mm thick and 20 mm long. Using the property values and other parameters in 1,…Q: A large plane wall of thickness (L= 0.3 m), thermal conductivity (k = 40 W/m-°C), and surface area 0.4 m2. The left side of the wall is maintained at a constant temperature of 70°C while the right side loses heat to the surrounding air with heat flux q' expressed by: 1200k q = k+20L A- Find a relation to determine the variation of temperature in the wall. B- Determine the rate of heat transfer through the wall. C- Determine the temperature at the right side of the wall. wall T1= 70 °C L= 0.3m1- Consider steady- state conduction for one-dimensional conduction in a plane wall having a thermal conductivity k=50 W/m.K and a thickness L-0.25 m, with no internal heat generation. Determine the heat flux and the unknown quantity (blanks) for each case and sketch the temperature distribution, indicating the direction of heat flux. Case TI(°C) 50 T2(°C) -20 dT/dx(K/m) 1 -30 -10 70 160 40 -80 5 30 200 234n