PROBLEM 2: A circular hot plate D=0.25 m in diameter with both surfaces are maintained at a uniform temparature of100 C is suspended in horizontal position in atmospheric air at 27 C. Determine the heat transfer rate by free convection from the plate into the atmosphere.

PROBLEM 2: A circular hot plate D=0.25 m in diameter with both surfaces are maintained at a uniform temparature of100 C is suspended in horizontal position in atmospheric air at 27 C. Determine the heat transfer rate by free convection from the plate into the atmosphere.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.42P

See similar textbooks

Related questions

Q: 2. A vertical square plate, 30cm on a side, is maintained at 50degC and exposed to room air at…

A: As per our guidelines we are supposed to solve only one question if multiple questions are asked .…

Q: ال جان ورق Q: A paint baking oven consists of a long, triangular duct in which a heated surface is…

Q: As far as diathermy concern, we use microwaves to deposit its energy in the surface of fatty layers…

A: Diathermy is the use of microwaves aur ultrasound to penetrate energy into the body so as to eat it…

Q: 7. A 1.5-cm diameter, electrically heated sphere is placed in a quiescent air at 20°C. Calculate the…

A: GIVEN :- diameter :d=1.5 cm or 1.5×10-2 m surrounding temperature : T∞=20°C or 293 K surface…

Q: A thin, horizontal metal plate is maintained at a temperature of 400°C. The plate is surrounded…

Q: A 4-mm-diameter sphere at 50°C is covered by a 1-mm-thick plastic insulation (k=0.13 W/m°C). The…

A: Given data as per the question Diameter of sphere =4 mm The thickness of insulation =1 mm k=0.13…

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

Q: An industrial spherical oven has 2.8 m diameter. It is placed in a factory floor where the air…

A: Given: D = 2.8 m, Therefore R = 1.4 m Ta = 25 oC = 25 +273 = 298 K Qpeak load = 905 kW Ts,…

Q: (B) A vertical cylinder 1.5m height and 18 cm in diameter is maintained at 100°C in an atmosphere…

A: Answer: The heat loss by free convection: 1173.22 W

Q: A very long semicylindrical furnace has a radius of 2 m. The curved top surface, whose emissivity is…

A: Given data as per questionr=2mFor Top surfaceε1=0.75Q1A1=8000W/m2For Bottom…

Q: , electrical power consumed by the hot plate will be?

A: Given: Tr=297 K Tp=403 K D=250 mm emmisivity=0.8 To determine: The electrical power consumed

Q: A plate (0.5 m * 0.5 m) is inclined at an angle of 30°. The top surface of the plate is well…

A: Given data Area of the plate A = 0.25 m2 Inclination angle of the plate = 300 Surrounding…

Q: Calculate the decrease in heat loss in kilowatt-hours per day when a 1.2 m × 2.1 m uncoated…

Q: The composite plate as shown in the figure consists of a foam insulation squeezed between two…

A: Heat transfer due to conduction depends upon the thermal conductivity of the material through which…

Q: A horizontal steam pipe with an outside diameter of 60.0 mm passes through a large room whose walls…

Q: sider a shed with an 8-ftx12-ft base and 4-ft height. The temperature of the outer surface of th and…

Q: Driving force for the free convection is Shear stress forces Buoyancy forces None of the above…

A: This question is from heat transfer.

Q: 8-40 Two parallel 30-cm-diameter disks are separated by a distance of 10 cm and enclosed in a large…

A: Given Diameter, d = 30 cm Temperature, T1 = 1200 K…

Q: A cooking pot which is cylindrical in shape with dimensions of 0.9 m in diameter and 1.2 m nigh with…

Q: An aluminum alloy (2024) plate, heated to a uniform temperature of Ti = 230°C, is allowed to cool…

A: Given that, Temperature of aluminum, Ti=230 °C,Ambient air, Tair=T∞=29 °C,Thickness of plate, t=16…

Q: Consider two black coaxial parallel circular disks of equal diameter D that are spaced apart by a…

A: It is required to determine the transfer of heat between the disks. It is required to determine…

Q: . Natural Convection Heat Loss in Double Window. A vertical double plate-glass window has an…

A: Given data:Temperature of one side of window T1 = 25°CTemperature of other side of window T2 = 10°C

Q: Two parallel discs of 1m diameter are situated 2m apart in surroundings at a temperature of 20 oC.…

A: Write the given data with suitable variables. T∞=20 °C=20+273 (K)=293 Kd=2 mT1=500 °C=773 Kε=0.5

Q: Question 2: The temperature of the inside surface of a wall of 3-m height and 5-m width is 32°C.…

A: To Find : The heat transfer rate by the free convection to the room ambient air at 22°C Given :…

Q: At the start of the following situation, determine the heat transfer contributions of each heat…

A: Given Temperature, T1 = 100oC T2 = 20oC Thickness, L = 1 cm…

Q: Estimate the natural convection and radiation heat transfer from a person with average surface…

Q: A steel plate is 0.3 m long, 0.1 m wide and 0.012 m thick. The plate is placed on a heating plate of…

Q: The production line of a special biscuit at 30 ̊C and 1 atm has a 0.8 X 0.8 (m) square plate. One…

Q: An 5-m·internal-diameter spherical tank made of 1.5-cm-thick stainless steel (k = 15 W/m·C) is used…

Q: An aluminum alloy (2024) plate, heated to a uniform temperature of Ti = 231°C, is allowed to cool…

Q: int-baking consi long, triangular iS at 1200 K and another surface is insulated. Painted panels,…

A: In order to proceed with the problem following assumptions need to be taken into consideration. The…

Q: - (5 points) A surface of area 0.5 m², emissivity 0.8, and temperature 150 C 1s placed in a large…

Q: A vertical cylinder 1.5m height and 18 cm in diameter is maintained at 100° C in an atmosphere…

A: Natural convection, also known as free convection, is a mass and heat transport method in which…

Q: A 5-m-internal-diameter spherical tank made of 1.5-cm-thick stainless steel (k = 15 W/m-°C) is used…

Q: A manufacturing factory located at 30° N latitude has a window area 35 m2 that consists of double-…

Q: A long electrical conductor of 10 mm diameter is concentric with a refrigerated cylindrical tube of…

A: Givendiameter of conductor d=10mm=0.01mElectrical conductor has a surface emissivity ε1= 0.6…

Q: A spherical instrumentation device with a diameter of 102.16 mm has an emissivity of 0.32. It is…

A: Given data Diameter of sphere = 102.16 mm = 0.10216 mEmissivity = ∈ = 0.32Temperature of chamber =…

Q: A dryer is shaped like a long semicylindrical duct of diameter 1.5 m. The base of the dryer is…

A: Consider the diagram shown below for the semi-cylinder. The view factor from 2 to 1 is

Question

can you solve the question

PROBLEM 2: A circular hot plate D=0.25 m in diameter with both surfaces are maintained at
a uniform temparature of100 C is suspended in horizontal position in atmospheric air at 27
C. Determine the heat transfer rate by free convection from the plate into the atmosphere.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

1.13 If the outer air temperature in Problem is –2°C, calculate the convection heat transfer coefficient between the outer surface of the window and the air, assuming radiation is negligible.
Determine the power requirement of a soldering iron in which the tip is maintained at 400C. The tip is a cylinder 3 mm in diameter and 10 mm long. The surrounding air temperature is 20C, and the average convection heat transfer coefficient over the tip is 20W/m2K. The tip is highly polished initially, giving it a very low emittance.
Calculate the free convection heat transfer coefficient for a plate 6 ft high and 8 ft wide at 120 °F that is exposed to nitrogen at 60 °F. (see attached)
A plate (0.5 m * 0.5 m) is inclined at an angle of 30°. The top surface of the plate is well insulated. Estimate the rate of heat loss from the plate when the bottom surface is maintained at 60°C and the surrounding atmospheric quiescent air is at 0°C.
A circular grill of diameter 0.35 m and emissivity 0.7 is maintained at a constant surface temperature of 130 °C in a horizontal position. What electrical power is required when the room air and surroundings are at 24 °C?
A geodesic dome constructed with an aluminum frameworkis a nearly perfect hemisphere; its diameter measures 55.0 m on a winterday at a temperature of -15°C. How much more interior space does thedome have in the summer, when the temperature is 35°C?
A thin plate with a length of 0.5m is cooled by vertical suspension in a very large box filled with quiescent carbon monoxide at a temperature of 44°C. If the plate surface temperature is 80°C, please answer the following: 1. What is the thickness of the free convection boundary layer at the upper edge of the plate? 2. What is the velocity in the x-direction at half the plate length? 3. Calculate the average Nusselt number for the plate. Justify your choice of correlation
A 0.2 m x 0.2 m vertical plate has a surface temperature that is maintained at 40°C. Air at 20°C is flowing in parallel over the plate with a velocity of 0.4 m/s. a) Do we need to consider both the forced convection and free convection? b) Calculate the increase in heat transfer rate if the forced flow assists the free convection rather than opposes it.
A spherical interplanetary probe of 0.5-m diameter contains electronics that dissipate 150 W. If the probe surface has an emissivity of 0.8 and the probe does not receive radiation from other surfaces, as, for example, from the sun, what is its surface temperature?
The production line of a special biscuit at 30 ̊C and 1 atm has a 0.8 X 0.8 (m) square plate. One side of the plate is maintained at a temperature of 100 ̊C, while the other side is insulated. Determine the rate of heat transfer from the plate by natural convection if the plate (i) Is horizontal with the hot surface facing down; (ii) Is horizontal with the hot surface facing up; Data: The properties of air at the film temperature are: thermal conductivity, k= 0.0279 W/m.k); kinematic viscosity= 1.815 x 10-5 m2/s; Pr = 0.709
A loaf of bread having a surface temperature of 373 K is being baked in an oven whose walls and the air are at 477.4 K. The bread moves continuously through the large oven on an open chain belt conveyor. The emissivity of the bread is estimated to be 0.85, and the loaf can be assumed to be a rectangular solid 114.3 mm high × 114.3 mm wide × 330 mm long. Calculate the radiation heat-transfer rate (in SI and AES units) to the bread, assuming that it is small compared to the oven and neglecting natural convection heat transfer.
A horizontal steam pipe with an outside diameter of 60.0 mm passes through a large room whose walls are at a temperature of 298 K. The outer surface of the pipe wall has a surface temperature of 443 K and an emissivity of 0.8. The air temperature in the room is 303 K. Calculate the rate of heat loss per unit length of the pipe by radiation and natural convection.