Find: a. Heat transfer per unit area b. Temperature at the right most part of material E c. Overall heat transfer coefficient
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Q: Determine the thermal conductivity.
A: M1 => K = 15Q42.3-32.8=15Q9.5 M2 => K = 25Q41.9-32.7=25Q9.2 M3 => K = 35Q39-32.7=35Q6.3 M4…
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Q: Q4) Define Fourier's law of heat conduction with units?
A: Define fourier's law of heat conduction.
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Q: Name an example from daily life (different from the text) for each mechanism of heat transfer.
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Q: For steady state heat conduction in a composite wall (As = 5 m², LA=1 cm and LB =2 cm) as shown in…
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Q: Q1) Find the heat transfer rate through a plane wall 20cm thick and 0.1m heat transfer area. The…
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- One end of a 0.3-m-long steel rod is connected to a wall at 204C. The other end is connected to a wall that is maintained at 93C. Air is blown across the rod so that a heat transfer coefficient of 17W/m2 K is maintained over the entire surface. If the diameter of the rod is 5 cm and the temperature of the air is 38C, what is the net rate of heat loss to the air?(a) The temperature at the surface of the heating rod, T1. (b) If the salt solution temperature is 300 degree Celcius, what is the value of convection heat transfer coefficient, h of the salt solution ? (c) If the heating rod is not covered by metallic cylinder and corresponds to the result of part (a) and (b), how much the rate of energy transfer to the salt solution ? (d) Compare and discuss the difference of heat transfer with and without the matallic cylinder.(a) What is the rate of heat transfer through a wall that is 2 m high by 2.5 m wide?(b) Sketch the temperature distribution.
- Create two problem solving about steady-state heat flow (Heat convection in fluids) and show your solutions. Thank you!A furnace wall is to consist in series of 7 in of kaolin firebrick, 6 in of kaolin insulating brick, and sufficientfireclay brick to reduce the heat loss to 100 Btu/ hr ft2 when the face temperatures are 1500 and 100°F,respectively.a) Show the figure of the systemb) What thickness of fireclay brick should be used?c) If an effective air gap of 1/8 in can be incorporated between the fireclay and insulating brick whenerecting the wall without impairing its structural support, what thickness of insulating brick will berequired?Derive an expression for heat conduction through a composite plane wall of n- layers.
- The wall of a box furnace is made of a composite material. Layer A is directly in contact with the combustion gases inside the furnace and it has a thickness of 0.023 m, a thermal conductivity of 132 W/m-K, and a cross-sectional area of 0.42 m2. On the other hand, Layer C corresponds to the outermost layer that is in direct contact with the ambient air. It has a thickness of 0.036 m, a thermal conductivity of 2 W/m-K, and has the same cross-sectional area as Layer A. In between Layer A and Layer C are two parallel layers: LayerB and Layer D. Layer B has the same cross-sectional area as Layer D. The thickness of Layer B and Layer D is 0.066 m. Layer B has a thermal conductivity of 13 W/m-K; while, Layer D has a thermal conductivity of 23 W/m-K. The combustion gases inside the furnace has a temperature of 373 ; while, the ambient air has a temperature of 30 . Finally, the convection heat transfer coefficients at the inside and outside of the wall are 111 W/m2-K and 22 W/m2-K…Provide two sample question regarding Heat transfer between two fluids separated by walls of a composite tube of solid materialsTwo inches of urethane foam will reduce heat loss close to 1000% when applied to a 2-inch diameter uninsulated steel pipe. Assume the pipe wall thickness is 0.25-inches, the pipe interior convective heat loss (hi) is 500 BTU/hr-ft2-oF, and the pipe outside convective heat loss ho 20 BTU/hr-ft2-oF, k steel is 25 BTU/hr-ft-oF, and k insulaton is 0.023 BTU/hr-ft-oF. (hint - calculate heat loss with and without insulation.
- A hot plate 1.2m wide, 0.35m high and at 1 is · Calculate the following Local heat transfer coefficient at 180 mm and average heat transfer coefficientYou are designing a small heatsink to cool a high-powered IC on a control unit PCB. The IC puts out 40,000 W/m2 and has a size of 40mm x 20mm. A fan blows 40 degrees C air across the IC at a speed of 4 m/s. The IC is well insulated on its back face. If the convection coefficient is 62 W/m2K, what is the surface temperature of the IC?Q2: A: The exterior wall of a single-story office building near Chicago is 3 m high and 15 m long. The wall consists of 100-mm face brick, 40-mm polystyrene insulating board. 150-mm lightweight concrete block, and an interior 16-mm gypsum. The wall contains three single-glass of 3 mm thickness windows 1.5 m high by 2 m long. Calculate the heat loss through the wall at design conditions if the inside temperature is (20 °C). The outside temperature is (-18 "C).