A horizontal, high-pressure steam pipe of 0.1 m outside diameter passes through a large room whose wall and air temperatures are at 23°C. The pipe has an outside surface temperature of 165°C and an emissivity of 0.85. Estimate the heat loss from the pipe per unit length (W/m) by radiation.

A horizontal, high-pressure steam pipe of 0.1 m outside diameter passes through a large room whose wall and air temperatures are at 23°C. The pipe has an outside surface temperature of 165°C and an emissivity of 0.85. Estimate the heat loss from the pipe per unit length (W/m) by radiation.

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.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.4P: An electrical transmission line of 1.2-cm diameter carries a current of 200 amps and has a...

See similar textbooks

Related questions

Q: The block C is moving downwards at the speed shown. Find the speed of B and the angular velocity of…

Q: 3.40. Referring to Fig. 3-32, determine (a) the force exerted by water on bottom plate AB of the…

Q: In case of emergency, the gas actuator is used to move a 50-kg block B by exploding a charge C near…

Q: Car A is traveling at a location where the speed limit is 100 km/h. The police officer in car P…

Q: Find the external reactions of the Fixed Support at A.

Q: A single-stage rocket is launched vertically from rest, and its thrust is programmed to give the…

Q: 7- Illustrates a composite wall. The wall is composed of two materials (A with kA = 1 W/m-K and B…

A: Introduction Using the Fourier rule of heat transport, we will determine the total thermal…

Q: Determine the moment about the origin O of the force F= -21-33 +5k that acts at point A. Assume that…

Q: Energy transfer by conduction is primarily restricted to liquids fluids gases solids Which…

A: Introduction Conduction energy transfer happens through the direct contact of molecules that…

Q: When force P is apliced to the rigid arm BC, point B moves downward 0.2mm. Determine the normal…

Q: The square-threaded worm gear shown has a mean radius of 1.5 in. and a lead of 0.375 in. The large…

Q: 3. a) With a neat diagram briefly explain the working of Water jet machining Process? b) Write any…

Q: One metal sample is hot worked 40%; a second sample is hot worked 50%; a third sample is cold worked…

A: Given data:- One metal sample is hot worked 40% a second sample is hot worked 50% third sample is…

Q: of

Q: The 8-kg collar has a velocity of 8 m/s to the right when it is at A. It then travels down along the…

Q: A manufacturer conducted an experiment for an evaporator capacity 507 kW cooling and designed for…

Q: A solid steel shaft, whose Sy= 300 MPa and Su= 400 MPa, is used to transmit 3000 kW at 800 rpm.…

Q: Two particles with massess of 12 lbm are 1.2 ft apart. Find the gravitational force that acts on…

A: Mass of the two particles is given as 12 lbm. Distance between the two particles is 1.2 ft. It is…

Q: Water is the working fluid in an ideal Rankine cycle. Steam enters the turbine at 1400 lbf/in² and…

Q: A placekicker is attempting to make a 59-yard field goal. If the launch angle of the football is…

Q: Water is the working fluid in an ideal regenerative Rankine cycle with one open feedwater heater.…

Q: 700 150 500 A-50 mm² E-83 GPa 600- E -400- F A-100 mm² E = 200 GPa C 30° to B A -600 P₂ A-150 mm²…

A: For solution refer below images.

Q: Under an applied axial load, a rod elongates by 0.49 in. If the rod is 11 ft long, and has a 2.0…

Q: At time t = 12 s, the velocity of a particle moving in the x-y plane is v = 0.12i+2.52j m/s. By time…

Q: Da entrance x=0 Mentrance FIGURE P4-21 u(x) lexit x=L Dexit 4-22 For the velocity field of Prob.…

A: For L = 1.56 m. uentrance= 22.6 m/s, uexit=17.5 m/s, calculate the acceleration at x=0 and x = 1.0…

Q: A 50-L electrical radiator containing heating oil is placed in a 50-m3 room. Both the room and the…

Q: 6-73. The wind turbine has an efficiency of 48% in an 8 m/s wind. If the air is at a standard…

A: Givenη=48%V=8m/sair at standard atmospheric pressure and a temperature 20oCd=35m

Q: Water is the working fluid in a regenerative Rankine cycle with one closed feedwater heater and one…

A: Given: P1=1000 lbf/in2, T1=900oFP2=400 lbf/in2P3=140 lbf/in2Pcond=P4=1.5…

Q: The following data were obtained from space cooling load survey of an Air-Conditioning (AC) system…

Q: Create the missing view given the two completed views. The frontvis missing for A, Top for B, and…

A: According to the two orthographic views of a projection, the third projection view is drawn with the…

Q: A toboggan having a mass of 12 kg starts from rest at A and carries a girl and boy having a mass of…

A: Given Data: Mass of tobbogan Mt=12 kg Mass of boy Mb=45 kg Mass of girl Mg=40 kg Height of Point A…

Q: Composit wall K1=10.K2=30,K3=40 W/mC at sieries repectivelly.Thickness for al three layer are…

Q: Car A is traveling at a location where the speed limit is 100 km/h. The police officer in car P…

Q: (P7.15) A pipe with closed ends has an outer diameter of 80mm and a wall thickness of 3.0 mm. It is…

Q: Water is the working fluid in an ideal regenerative Rankine cycle with one closed feedwater heater.…

Q: Design a rocket nozzle, knowing that you have a chamber pressure of 6.28 MPa, mass flow rate of…

Q: Calculate the applied force (by taking moments,

Q: A F 12° В с 10° -

Q: Com Posit Wall K₁=20₂ K₂=30₂ K3=40 w/mc at Steries repectively Thickness for at three layer are…

Q: In an artery of an animal with an internal diameter of 1 cm and wall thickness of 0.75 mm at an end…

A: Given Data: The internal diameter of the artery di=1 cm=10 mm The thickness of the artery t=0.75 mm…

Q: A roofer tosses a small tool to the ground. What minimum magnitude vo of horizontal velocity is…

Q: A jet of velocity Vjet, cross-sectional area Ajet, and density Pjet impinges on a reversing vane and…

A: Given data:- Reversing vane nozzle jet water system To be found out :- Force exerted on the vane…

Q: Member AB has the angular motions shown. Suppose that w = 4.5 rad/s and a = 6.7 rad/s². (Figure 1)…

Q: steam power plant work between boiler pressure (42 bar) and condenser pressure (0.034 bar).…

Q: Water is the working fluid in a reheat-regenerative Rankine cycle with one closed feedwater heater…

A: Given data: For a reheat regenerative rankine cycle P1=P10=P111400 lbf/in2, T1=1000oFP2=P4=500…

Q: In a tensile test for an aluminum alloy, the sample is 2 inches long and 0.5 inches in diameter. The…

A: Given data:- Length of the sample (l) = 2 in diameter of the sample (d)=0.5 in Applied tensile load…

Q: A manufacturer conducted an experiment for an evaporator capacity 500 kW cooling and designed for…

A: Given Data The evaporator capacity is: Q=500 kW The coefficient of performance is: COP=2 The…

Q: We wish to produce an 0.3 inch plate of oxygen-free, high-conductivity (OFHC) copper that has a…

A: Solution: Given Data:

Q: A compound tube consists of a steel tube 120 mm internal diameter and 140 mm external diameter and…

Q: The displacement of a particle is given by s= 2t³-42t² + 117t-49 where s is in feet and t is in…

A: Given-Information:- s = 2t3 -42t2+117t-49 To-Determine:- At t = 4.9 sec, 9.4 sec, 14.2 sec find…

Question

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 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

Consider a long horizontal pipe with a diameter of 90 mm and emissivity of 0.8 transfers steam at 227°C. Outside of the pipe is air at 27°C and the surroundings of the pipe are also at 27°C. You may assume the temperature of the pipe wall is the same as the temperature of the steam. 1. Find the heat loss per unit length (W/m) for the pipe when the air outside is still. 2. Find the heat loss per unit length (W/m) for the pipe when the wind outside is 8 m/s and blows perpendicularly across the pipe.
An 8-m long square duct with thin metal walls is hanging in a room where the temperature is 10 °C. Air enters the duct at 75 °C. The air has a specific heat of 1000 J/kg K and is flowing at 0.015 kg/s. The internal convection coefficient is 25 W/m2 K, and the external convection coefficient is 15 W/m2 K. The perimeter length of the duct is 18 cm. Neglecting radiation, what is the temperature of the air at the duct exit? (a) 10.2'C (b) 16.2°C (c) 25.0°C (d) 36.4°C (e) 42.5'C (f) 61.1'C (g) 74.8'C
The rectangular wall of a furnace consists of 3in. fire clay brick surrounded by 0.25in. of steel on the outside. There are six 0.25in.diameter mild steel bolts per square foot connecting the steel and the brick. The furnace is surrounded by 70°F air (with a film coefficient of 1.65 Btu/hr-ft²-°F), while the inner surface of the brick is maintained at a constant 1000°F. Determine the heat flux per square foot through this wall?
The temperature of a cylindrical tank containing liquid nitrogen is -10 ° C. Tank diameter is 16 cm. The amount of heat lost by convection and radiation from the tank to the environment is 65.5 W / m. Calculate the temperature of the environment where the tank is located: h = 4.35 W / m2K, ∈ = 1.
An electronic component with dimension of 5 cm wide, 6 cm high, and 9 cm long is cooled by aluminum heat sink (9 cm × 5 cm wide and emissivity of 0.9) to its top surface as shown in Figure 2. The aluminum heat sink was designed with seven fins, which are 6 mm high, 3 mm thick, and 9 cm long. A fan blows air at 30 °C parallel to the passages between the fins. The heat sink is to dissipate 10 W of heat. The fins and the base plate to be nearly isothermal. Suggest the minimum free-stream velocity the fan needs to supply if the base temperature of the heat sink is not to exceed 50 °C to avoid overheating. Please consider your analysis for both laminar and turbulent flow conditions. Air 30 °C 50 °C Fins 0.6 cm 9 cm 10 W 6 cm - 5 cm Figure 2
Estimate the rate of heat transfer (J/s) from a 50.6°C sphere which has an emissivity of 0.2 if it is suspended in a cold volume maintained at -10.7°C. The sphere has a diameter of 0.2m. Reduce your answer in to two decimal point.
Consider steady heat transfer between two large parallel plates at constant temperatures of T1 = 500 K and T2 = 300 K that are L = 2.5 cm apart. The emissivity of the surfaces, ɛ = 0.95. Calculate the total rate of heat transfer and the percentage by thermal radiation between the plates per unit surface area assuming the gap between the plates is (a) filled with atmospheric air (k = 0.02 W/m.°C), (b) evacuated. %3D %3D %3D O = 5.67 x 10-8 W/m².K4
A large spherical storage tank, 2 m in diameter, is buried in the earth at a location where the thermal conductivity is 1.5 W/m.°C. The tank is used for the storage of an ice mixture at 0°C, and the ambient temperature of the earth is 20°C. Calculate the heat loss from the tank.
In a new residential project, you strongly believethat double-paned windows are ‘better’ than singlepaned windows. Compare the rate of heat loss betweensingle and double-paned windows (1.5 m x 1 m) if thethickness of each pane is (th = 0.4 cm) and (k = 0.9W/m.K). The indoor and outdoor temperatures are 18°C and 2 °C, respectively. Thickness of the air gapbetween the double-paned windows is (th = 1 cm), and(k = 0.022 W/m.K). Image credit: Windowwhirl
A mercury-in-glass thermometer having a diameter of 6 mm is placed in a verti- cal position to measure the air temperature in a metal warehouse in the summer. The walls of the warehouse are at 50°C. The convection coefficient is 7 W/m² - °C, and the emissivity of the thermometer may be taken as € = 0.9. Calculate the temperature indicated by the thermometer if the air temperature is 32°C.
In a new residential project, you strongly believe that double-paned windows are ‘better’ than single-paned windows. Compare the rate of heat loss between single and double-paned windows (1.5 m x 1 m) if the thickness of each pane is (th = 0.4 cm) and (k = 0.9 W/m.K). The indoor and outdoor temperatures are 18 °C and 2 °C, respectively. Thickness of the air gap between the double-paned windows is (th = 1 cm), and (k = 0.022 W/m.K).
A cylindrical storage tank with diameter of 4m and a length of 10 m will hold a fluid whose temperature must be maintained at 347k. in order to size the heater required for the tank the following worst-case scenario is considered: Ambient temperature=-20 wind speed=20m/s tank wall temperature=347k what size (kW) heater will be needed?