Q1) A brick 1m high, 3m long, and 0.5m thick leaves an oven, where it has been heated to a uniform temperature of 300-C. The brick is allowed to cool in a room at 35-C with an air-convection coefficient of 15 W/m2.C. The bottom surface of the brick is on an insulated stand. Thermal diffusivity = 1.16x10-6 m²/s, thermal conductivity = 2.2 W/m.K. (a) How much heat will have been lost when the bricks cool to room temperature? (b) How long will it take to lose half this amount? (c) What will the temperature at the geometric center of the stack be at this time?

Q: Calculate the heat transfer rate per unit area of a concrete wall with a thickness of 250 mm at a…

A: Given: concrete wall with a thickness = 250 mm           Surface temperatures T1 = 25 °C…

Q: piece of beef steak 7 cm thick will be frozen in the freezer room -35 ° C. This product has a…

A:

Q: 2. Two wooden panels of a building's wall are separated by a layer of insulation (Layer B). The…

A:

Q: A certain material has a thickness of 4 cm and its thermal conductivity is 0.04 W / m.oC. At a…

A: The heat flow rate at the given distances from the material is to be calculated.

Q: with the

A:

Q: Q1/A steel pipe of outside diameter of (5.1 cm) is insulated with a (0.64 cm) thickness of asbestos…

A: A steel pipe with insulation layers of asbestos and fiber glass are given with following…

Q: The temperature on one side of a 6-in. thick solid wall is 200°F and the temperature on the other…

A: Given that, Thickness of the solid wall x = 6 in × 1 ft12 in = 0.5 ft Temperature on one side of the…

Q: 3- Calculate heat transfer flux of a wall with two layers of insulations. The inner wall is at…

A: The heat transfer flux for the given insulation system is to be determined.

Q: Material Density Specific Latent Heat Latent Heat Thermal of Fusion, of Нeat kgK. Conductivity W…

A: Considered a heater blanket of 2000 W having a negligible thickness and the heat is the transfer…