Question

Air at a pressure of 1 atm and a temperature of 15C is in parallel flow...

Air at a pressure of 1 atm and a temperature of 15C is in parallel flow at a velocity of 10
m/s over a 3-m long flat plate that is heated to a uniform temperature of 140 C.
(a) What is the average heat transfer coefficient and heat transfer rate for the plate?
(b) What is the local heat transfer coefficient and heat flux at the midpoint of the plate?
(c) Plot the variation of the heat flux with distance along the length of the plate.
Ans: (a) 19.9 W/m2K, (b) 25.4 W/m2K

Do help in detailing the rationale behind each steps

Homework Answers

Answer #1

it is properties table..thanks any doubt feel free to comment..

Thank you very much.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A square plate of 0.5 m length is heated to temperature of 383 K. Air at...
A square plate of 0.5 m length is heated to temperature of 383 K. Air at 293 K and 1 atm flows over the plate at 15 m/s. Calculate the total heat transferred. Determine the convection heat transfer coefficient, thermal boundary layer, and the velocity boundary layer at the trailing edge of the plate.
Liquid water at velocity of 2 m/s and temperature of 15 °C flows over a flat...
Liquid water at velocity of 2 m/s and temperature of 15 °C flows over a flat plate. The plate has a width of 1 m, length of 0.4 m and surface temperature of 37 °C. Determine: (a) the average heat transfer coefficient. (b) the convection heat transfer rate from the top surfacc of the platc.
A hot plate with a temperature of 60 ° C will be cooled by adding 50...
A hot plate with a temperature of 60 ° C will be cooled by adding 50 triangular profile needle blades (k = 243 W / mK) with a length of 93 mm and 10 mm. According to the ambient temperature 20 C and the heat transfer coefficient on the surface 20 W / m ^ 2 K; a-) Wing efficiency, b-) Total heat transfer rate (W) from the wings, c-) Calculate the effectiveness of a wing.
What is the heat flux (W/m2) to an object when subjected to convection heat transfer environment...
What is the heat flux (W/m2) to an object when subjected to convection heat transfer environment given: 24 °C = the surface temperature of the object, 82 °C = the bulk temperature of the fluid adjacent to the object, and the convection heat transfer coefficient = 49 W/(m^2 K)? Question 1: a. 3201 b. 2842 c. 1234 d. 2531
A slab of meat 25.4 mm thick originally at a uniform temperature of 10°C is to...
A slab of meat 25.4 mm thick originally at a uniform temperature of 10°C is to be cooked from both sides until the center reach 121°C in an oven at 177°C. The convection coefficient can be assumed constant at 25.6 W/m2.K. Neglect any latent heat changes and calculate the time required. The thermal conductivity is 0.69 W/m².K and the thermal diffusivity is 5.85x10-4 m²/h.
A boiler made from a polished brass plate, operate at a surface temperature of 135˚C, is...
A boiler made from a polished brass plate, operate at a surface temperature of 135˚C, is used to boil saturated water at 2.455 bars (2.04229 atm.): Estimate the operating heat flux for this boiler. Calculate the heat transfer coefficient. Show that the boiling is nucleate. If the boiler material is changed to polished copper (other conditions are the same), what will be the required operating flux for this new boiler?
A long cylinder 11 cm in diameter is initially at a uniform temperature of 427 C...
A long cylinder 11 cm in diameter is initially at a uniform temperature of 427 C and has a density of 7250 kg/m3, thermal conductivity of  16.7 W/m-K, and a specific heat of 540 J/kg-K. The cylinder is suddenly plunged into water with a temperature of 27 C, giving a convective heat transfer coefficient of 380 W/m2-K. a) Determine the surface and centerline temperatures of the cylinder 12 minutes after immersion. b) Calculate the heat transferred from the cylinder during this...
A hot black painted pipe(2.54-cmO.D.and50-mlong)passesthrougha 20°C room to heat it. The temperature of the pipe surface...
A hot black painted pipe(2.54-cmO.D.and50-mlong)passesthrougha 20°C room to heat it. The temperature of the pipe surface is 150°C. If the heat transfer coefficient by convection to the air is 10 W/m2-K : a) What is the total heat rate loss? b) What is the radiation heat transfer coefficient? c) At what temperature of the pipe, the heat rate by convection equals the heat rate by radiation.
A house has a composite wall of wood (exterior) (k = 0.12 W m-1 K -1...
A house has a composite wall of wood (exterior) (k = 0.12 W m-1 K -1 , 20 mm thick), fibreglass insulation (k = 0.045 W m-1 K -1 , 70 mm thick) and plasterboard (interior) (k = 0.25 W m-1 K -1 , 10 mm thick). Determine the total heat loss through the wall when the inside temperature is 20 °C, the outside temperature is -10 °C, the inside heat transfer coefficient is 15 W m-2 K -1 ,...
Dry air at a temperature of 300 K, total pressure of 1 atm, and velocity of...
Dry air at a temperature of 300 K, total pressure of 1 atm, and velocity of 0.5 m/s blows parallel to the length of a pool of liquid water maintained at 278 K. The length of the pool is 10 m and the width is 4 m. At 278 K, the vapor pressure of water is 1620 Pa. What is the evaporation rate of water from the pool?