Air at 20°C blows over a 50 x 75 cm hot plate made of carbon steel (AISI 1010) with 2 cm thickness. The outer surface temperature of the plate is maintained at 300°C. The convection heat transfer coefficient is 25 W/m2⋅K. 300 W is lost from the plate surface by radiation, calculate the inside plate temperature.

Q: Consider two concentric horizontal cylinders of diameters 55 cm and 65 cm, and length 125 cm. The…

A: Given Data Length of the horizontal cylinder, L=125cm=1.25m The diameter of the inner cylinder,…

Q: A pure copper 10 mm diameter sphere initially at 227°C is hanging in a furnace where air at 827 C…

A: Given: The diameter of the pure copper, d = 10 mm The initial temperature of the sphere, T1 = 227o…

Q: Q3 a) A person extends his uncovered arms into the windy air outside at 10°C and 50 km/h (Figure 3).…

A:

Q: 10-cm-diameter, 30-cm-high cylindrical bottle contains cold water at 38°C. The bottle is placed in…

A: External forced convection: The convection heat transfer occurs due to the bulk motion of the…

Q: A black 20-by-20-cm plate has air forced over it at a velocity of 2 m/s and a temperature of 0◦C.…

A: Given: The area of plate, A = 20x20 cm The velocity of air, v = 2 m/s The temperature of air, Ta =…

Q: A cylindrical bottle with a diameter of 10 cm and a height of 30 cm contains cold water at 3 °C. The…

A: Given data: d=10 cmh=30 cmTc=3°CT∞=27°CTf=11°C Need to determine the average wind speed.

Q: Steel balls (diameter = 21 mm, p = 7833 kg/m, k = 54 W/m:°C, Cp = 0.465 kJ/kg-°C, and a = 1.474x10 m…

A:

Q: Air at 20°C with a convection heat transfer coefficient of 25 W/m2 K blows over a horizontal steel…

A: Find outthe inside plate temperature isgiven dataAmbient temperature, Convection heat transfer…

Q: Determine the total heat transfer rate to the ice water.

A: Given:   To determine:the total heat transfer rate to the ice water

Q: |A 3 m internal diameter spherical tank made of 1 cm thick stainless steel (k = 15 W/mK) is used to…

A:

Q: Write the importance of dimensional analysis in convection heat transfer

A: Dimensional analysis could be a strategy of diminishing the number of factors required to depict…

Q: 2 m/s flows in parallel with a stationary thin 1x 1m^2 flat plate over the top and bottom surfaces.…

A: For the solution refer below images.

Q: Hailstones are formed in high altitude clouds at 253 K. Consider a with convection heat transfer…

A: The biot number is-

Q: A plate heated with a heat flux of 5 kW/m^2 and has an emissivity of 0.3. the air is over the plate…

A:

Q: A 25-cm circular grill has an emissivity of 0.9. The temperature of the air and surrounding surfaces…

A: To determine the heat transfer from the grill, first of all we need to determine the Reynold number…

Q: An 8-m long square duct with thin metal walls is hanging in a room where the temperature is 10 °C.…

A: Length of the duct, L=8 mRoom temperature, T∞=10oCAir inlet temperature, Ti=75oCoSpecific heat of…

Q: Assuming that adding 5-cm of insulation drops the U-value of a building from 1.36 to 0.556 W/m2- °C,…

A:

Q: The shooter holds a leather-covered baseball for a certain period of time, bringing the outer…

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: A straight cylindrical fin 0.6 cm in diameter and 6 cm long protrudes from a magnesium block at…

A: Given:d=6 mmL=60 mmTb=300°CT∞=35°Ch=130 W/mKK=180W/m.k

Q: A 1-cm diameter, 1 % carbon steel sphere, initially at 200 ⁰C, is cooled by natural convection, with…

A: d=1cm

Q: A spherical ball of 5.5-cm diameter whose properties are roughly = 0.6 W/m2.°C and a = 0.14x10-6…

A:

Q: Air at 20°C blows over a hot plate 50 by 75 cm maintained at 250°C. The convection heat-transfer…

A: Givenair temperature To=20oCarea of plate A=50 cm ×75 cm =0.50m×0.75mplate temperature T=250oCheat…

Q: A 4.74 -m-internal-diameter spherical tank made of 1.5- cm-thick stainless steel (k = 15 W/m.°C) is…

A:

Q: A hot plate of length 0.75 m, width 0.5 m, and thickness 2 cm is placed in an air stream at 20°C. It…

A: The solution is in the following stpes

Q: A 2-m2 window has a surface temperature of 15°C, and the outside wind is blowing air at 2° C across…

A: Data given-  A = 2 m2  Tsurface = 15°C  Tair = 2°C  h = 125 W/m2 K

Q: A long copper plate (k= 374 W/m °C, a temperature of 250 °C. Both outer surfaces are suddenly…

A: thickness of the plate, L= 20cm = 0.2m K = 374W/mc. α = 11123x10-5 m/s Initial temperature, Ti =…

Q: Design a solar chimney to cover 80% of total heating losses in February, where U value for the…

A: Given, Overall heat transfer coefficient, U=0.4w/m2KTotal wall area,A=60m2Average inside…

Q: A large vertical plate 4 m high is maintained at 60°C and exposed to atmospheric air at 10°C.…

A:

Q: A straight cylindrical fin 0.6 cm in diameter and 6 cm long protrudes from a magnesium block held…

A: