2. A person is standing in a room with an ambient temperature of 25.3°C. Determine the total rate of heat transfer from this person if the exposed surface area and the average outer surface temperature of the person are 1.8 m2 and 25.4°C, respectively, and the convection heat transfer coefficient is 3.5 W/m2 with emissivity factor of 0.95.

Q: 6) Problem 4.7-6 (Page 350): Natural Convection Heat Loss in Double Window. 4.7-6. Natural…

A: Given that T1 =25 CT2 =10 Ch=2 mw=1.2 m Ra

Q: Steel pipe 1 cm thick, 1.0 m long and 5 cm deep, covered with 2 cm thick insulation. The wall…

A:

Q: Estimate the natural convection heat transfer coefficient of the horizontal pipe. The temperature of…

A: Given, Diameter of pipe, D = 15 cm×1 m100 cm    = 0.15 m temperature on outside surface of pipe, T0…

Q: rates of radiation heat transfer

A: In thermal radiation heat transfers from higher temperature  to lower temperature  without the…

Q: 6. In a long rectangle fin, its material has thermal conductivity of 200 w/ m.K and is subjected to…

A:

Q: a) Identify whether the following statements are true or false. Justify your answer with a proof or…

A:

Q: 2) Three materials are connected as the following figure. The heat conductivity coefficient of…

A:

Q: The inner and outer surfaces of a 0.5-cm-thick 2 m x 3 m window glass in summer are 48°C and 18°C,…

A: As per our guidelines, we are supposed to answer only 3 sub parts.

Q: A loaf of bread having a surface temperature of 373 K is being baked in an oven whose walls and the…

A: Given:  Tb=373 K Ts=477.4 K Emissivity, ε=0.85 height, h = 114.3 mm width, w =114.3 mm length, l…

Q: Heat Transfer in a Solid Using Equation of Energy Change. A solid of thickness L is at a uniform…

A:

Q: Consider a 1.2-m-high and 2-m-wide glass window whose thickness is 6 mm and thermal conductivity is…

A:

Q: An uninsulated pipe passes through a room in which the air and walls are at 30°C. The outside…

A:

Q: The heat loss to the gas if the length of the pipe is 5.0 ? b. The temperature drop due to the…

A:

Q: The inner and outer surfaces of a pane of plain glass, which is 0.4 cm thick and has an area of 2 m…

A: Given, The area of the glass, A = 2 m×2 m = 4 m2 The thickness of the glass, ∆x = 0.4 cm The…

Q: The inner and outer surfaces of a 0.5-cm-thick 2 m x 3 m window glass in summer are 48°C and 18°C,…

A: GIVEN THAT  INSIDE TEMPERATURE T1 = 18oC Out side temperature T2 = 48oC Heat trasfer area A = 2×3…

Q: 1-128 A thin metal plate is insulated on the back and ex- posed to solar radiation on the front…

A: Given  Solar radiation incident on plate = 700 w/m2 Absorptivity of plate = 0.7 Temperature of…

Q: An opaque horizontal plate is well insulated on the edges and the lower surface. The irradiation on…

A:

Q: Estimate the natural convection heat transfer coefficient of the horizontal pipe. The outer surface…

A:

Q: Air at 20°C blows over a 50 x 75 cm hot plate made of carbon steel (AISI 1010) with 2 cm thickness.…

A:

Q: Problem 5: The energy lost from a 10 cm thick slab of steel is 50 W. Assuming the temperature…

A: Thick Ness of slab t = 10 cm                                  = 0.1 mThermal conductivity k = 45 W/…

Q: A loaf of bread having a surface temperature of 373 K is being baked in an oven whose walls and the…

A: given Temperature of body Tb=373 K Temperature of the surrounding Ts=477.4 K Emissivity e=0.85…

Q: The wall of a house is constructed from uninsulated 6-inch-thick common brick. Measurements made…

A: Given: The wall of the house is constructed from an L  = 6-inch thick common brick, The inner and…

Q: Problem 1 A concrete wall (plane wall) of 20-cm-thick, is subjected to convection on both sides. In…

A:

Q: For the plane wall shown, solve the conduction equation, deriving an algebraic expression for the…

A: Conduction is a simple heat transfer process in which heat transfers from one end to another end of…

Q: b) A heated sphere of radius R is placed in a large amount of stagnant fluid. Consider the heat…

A: Given:The temperature at the share is constant,So, at r=R, T=TR, and throughout the liquid it…

Q: = 1-D heat transfer.

A:

Q: An opaque horizontal plate is well insulated on the edges and the lower surface. The irradiation on…

A:

Q: A 5 cm thick steel pipe, 1.0 m long, with an internal diameter of 8 cm is covered with 4 cm thick…

A:

Q: Steel pipe 3 cm thick, 1.0 m long and 10 cm deep, covered with 6 cm thick insulation. The wall…

A: Given data: Thickness of steel pipe = 3 cm Length of pipe = 1 m Depth of pipe= 10 cm Thickness of…