A composite wall is made up of an external thickness of brickwork 110 mm thick inside which is a layer of fiber glass 75 mm thick. The fiberglass is faced internally by an insulating board 25 mm thick. The coefficient of thermal conductivity for the three is as follows: Brickwork 5 W/m-K, Fiberglass 0.04 W/m-K and Insulating board 0.06 W/m-K. The surface transfer coefficients of the inside wall is 3.1 W/m2-K while that of the outside wall is 2.5 W/m2-K. take the internal ambient temperature as 10°C and the external temperature is 27°C. Determine the heat loss (Watts) through such wall 6 m high and 10 m long.

Q: Thermal treatment of a steel cube, of 10 cm side length, L, requires a two step cooling process. In…

A: Given that, Length of cube, L=10 cm,Temperature of cube, Ti=500 °C,Cooling temperature of cube,…

Q: A house has a composite wall of wood, fiberglass insulation and plaster board. On a cold winter day,…

A:

Q: two 5 cm diameter, 15 cm long aluminum bars (k=176W/m(degrees Celsius)) with ground surfaces are…

A:

Q: An isothermal sphere 3 cm in diameter at 80°C is embedded in a large clay region. The temperature of…

A: Disclaimer: “Since you have asked multiple questions, we will solve the first question for you i.e…

Q: To increase the rate of heat transfer from a device, which has 0.1 m² of exposed surface, you added…

A:

Q: Consider a rectangular warehouse with the dimensions of 40m long x 20m widex10m height. The overall…

A: As per BARTLEBY rules i answer only first three sub parts. so i hope you understand.

Q: A box full of electronics with the dimensions shown in the diagram is buried deep in soil. The…

A: Heat transfer, in general, defines the movement of heat (thermal energy) caused by temperature…

Q: Explain and write legibly

A: It has been two choices to choose the fin. We have to decide which is suitable for quick heat…

Q: Consider a 0.6 m X 0.6 m epoxy laminate (k = 0.2 W/m-k) whose thickness is 5 mm. In order  to reduce…

A: Solution: Given Data: ke=0.2 W/m-Kt=5 mmkc=380 W/m-K∆T=20oCs=6 mmd=2 mm   To Find: (a) Thermal…

Q: An industrial cold room has four 200 mm thick walls made of concrete. The walls are insulated on the…

A: The objective of the question is to determine the heat energy gained per hour through all 4 walls of…

Q: Calculate the heat transfer per hour though a solid brick wall 6.9m long, 1.5m high and 216mm thick,…

A: Solution:

Q: Calculate the heat transfer per hour through a solid brick wall 6 m long, 3 m high, and 240 mm…

A: find the heat transfer per hour.

Q: Consider a multi-layered walls of a storage building (no windows) that is made of three layers as…

A: a) The thermal resistance diagram is given below- T1 = Inside temperature of the wallT2 =Temperature…

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.