Determine the heat transfer rate per unit width for a 1.1-m long plate with a surface...

Determine the heat transfer rate per unit width for a 1.1-m long plate with a surface temperature of 125°C for critical Reynolds numbers corresponding to (A) 105, (B) 5 x 105, and (C) 106. Air flows over the plate at 25°C with a velocity of 21 m/s.

Expert Solution

samet mamat answered 2 years ago

Determine the heat transfer rate per unit width for a 0.9-m long plate with a surface...

Determine the heat transfer rate per unit width for a 0.9-m long plate with a surface temperature of 125°C for critical Reynolds numbers corresponding to (A) 105, (B) 5 x 105, and (C) 106. Air flows over the plate at 25°C with a velocity of 25m/s. Calculate the Reynolds number. R ⁢ e =

Heat Q5 A vertical flat plate (1.5 m) height and (1 m) width ,with uniform temperature...

Heat Q5 A vertical flat plate (1.5 m) height and (1 m) width ,with uniform temperature (120 oC) one face of this plate expressed to the air with the velocity (6 m/s) to the up direction, the second face expressed to the static air ,the temperature of the air with two side (30oC) . Calculate the heat losses from the plate. The properties of the air at (75 oC),[ ρ=0.998 kg/m3 .Cp=1.009 kJ/kg.oC, υ =2.076 *10-5 m 2 /s ,...

heat transfer The double-glazed window with a height of 1.2m and a width of 2m has...

heat transfer The double-glazed window with a height of 1.2m and a width of 2m has a gap of stagnant air (k = 0.026W / m ° C) with a width of 12mm between the glass of 3mm (k = 0.78W / m ° C). On a day when the outside temperature is kept at 24 ° C, find the continuous heat transfer rate and inner surface temperature in this glass window. (Take the heat transfer coefficients h1 = 10W...

Heat & Mass Transfer Consider the flow of water over a flat plate at a film...

Heat & Mass Transfer Consider the flow of water over a flat plate at a film temperature of 25 °C. The plate is 10m long, and the Reynolds number at the end of the plate is 106. Determine: The free stream velocity Is the flow laminar or turbulent at the end of the plate? Is the flow laminar or turbulent at the mid-length? What is the average Nusselt number? What is the average heat transfer coefficient? What is the Nusselt...

What is the width of an "egress unit" as distinct from the width required per individual?...

What is the width of an "egress unit" as distinct from the width required per individual? What are the three basic requirements for a fire? What is the recommended minimum width of a public corridor?

HEAT TRANSFER: HEAT EXCHANGER Oil flows in a heat exchanger with a mass flow rate of...

HEAT TRANSFER: HEAT EXCHANGER Oil flows in a heat exchanger with a mass flow rate of 20 kg/s and is to be cooled from 175 to 65°C with water as a coolant flowing at a rate of 30 kg/s and an inlet temperature of 12°C. The overall heat transfer coefficient is U = 1250 W/m2⋅K. a) Sketch the temperature profile and calculate the mean temperature for parallel flow, counter flow, and cross flow heat exchangers.. b) Determine the area required...

a heat transfer experiment consist of a stream of air blowing over a heated horizontal plate....

a heat transfer experiment consist of a stream of air blowing over a heated horizontal plate. what causes the formation of both velocity and thermal boundary layers? what causes a difference in thickness between them?

Exercise Estimate the requirements of steam and heat transfer surface, and the evaporating temperatures in each...

Exercise Estimate the requirements of steam and heat transfer surface, and the evaporating temperatures in each effect, for a triple effect evaporator evaporating 500 kg h-1 of a 10% solution up to a 30% solution. Steam is available at 200 kPa gauge and the pressure in the evaporation space in the final effect is 60 kPa absolute. Assume that the overall heat transfer coefficients are 2270, 2000 and 1420 J m-2 s-1 °C-1 in the first, second and third effects...

Determine the overall heat transfer coefficient (U) in a heat exchanger that uses steam to heat water to the point of vaporization (in vacuum.)

Determine the overall heat transfer coefficient (U) in a heat exchanger that uses steam to heat water to the point of vaporization (in vacuum.) The system is non-insulated, so the heat lost to the surroundings must be taken into consideration. While I know that the heat Q = mCdT and the heat transfer rate q = UAdT(Log-mean), I am struggling to equate the two due to the heat lost to the surroundings. How do I go about determining the overall...

A strip wall footing 1.5 m wide is located 1.1 m below the ground surface. Supporting...

A strip wall footing 1.5 m wide is located 1.1 m below the ground surface. Supporting soil has a unit weight of 19.60 kN/m3 . The results of laboratory tests on the soil samples indicated that the supporting soil has the following properties: c’ = 57.5 kN/m2 and I’ = 25°Groundwater surface was not encountered during the subsurface exploration. Determine the allowable bearing capacity of the soil using a factor of safety of 2.5.

Question