Question A4 Two long, silver rods (k = 400 W/mK, diameter = 10 mm) are solderedtogether end to end, with the solder having a melting point of 520°C.The rods are in air at 20°C with a convection coefficient of 10 W/m?K.Ignoring radiation, what is the minimum power input needed to completethe soldering? Comment on how including radiation would haveaffected your calculated estimate of power needed for the soldering.

When an amount of heat is supplied from the one solid body to the another solid body due to…

Two long, silver rods (k = 400 W/mK, diameter = 10 mm) are soldered together end to end, with the solder having a melting point of 520°C. The rods are in air at 20°C with a convection coefficient of 10 W/m2K. Ignoring radiation, what is the minimum power input needed to complete the soldering? Comment on how including radiation would have affected your calculated estimate of power needed for the soldering.

Two long, silver rods (k = 400 W/mK, diameter = 10 mm) are soldered together end to end, with the solder having a melting point of 520°C. The rods are in air at 20°C with a convection coefficient of 10 W/m2K. Ignoring radiation, what is the minimum power input needed to complete the soldering? Comment on how including radiation would have affected your calculated estimate of power needed for the soldering.

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

Similar questions

Solve this with diagram: An engine cover is made from 1 cm thick stainless steel plate (k = 14 W/m K). Air on the inside of the engine cover is heated to 340°C with a heat transfer coefficient of 7 W/m2K. Outside of the engine coverthe ambient air has a temperature of 70°C. If oil was spilled on the outside of the engine cover (ambient side), it could ignite if the surface temperature were to exceed 200°C. In this configuration, would spilled oil ignite? Use calculations to justify your answer. If a 4 mm thermal coating (k = 1.1 W/m K) was applied tothe outside of the engine, what would the outside temperature of the engine cover be reduced to? Solve it with resistors method
Solve this with diagram: An engine cover is made from 1 cm thick stainless steel plate (k = 14 W/m K). Air on the inside of the engine cover is heated to 340°C with a heat transfer coefficient of 7 W/m2K. Outside of the engine coverthe ambient air has a temperature of 70°C. If oil was spilled on the outside of the engine cover (ambient side), it could ignite if the surface temperature were to exceed 200°C. In this configuration, would spilled oil ignite? Use calculations to justify your answer. If a 4 mm thermal coating (k = 1.1 W/m K) was applied tothe outside of the engine, what would the outside temperature of the engine cover be reduced to?
How does a thermal printer work, and what are some industries that commonly use thermal printing technology?
Example 7.9: A one meter long metal rod is thermally insulated in its circumference. The terminal temperatures of the rod are measured to be 100C and 20C as illustrated in the figure below. Determine the heat fluxes in the rod. The rod is made of two different materials of copper and aluminum.
A furnace wall is to consist in series of 7 in of kaolin firebrick, 6 in of kaolin insulating brick, and sufficientfireclay brick to reduce the heat loss to 100 Btu/ hr ft2 when the face temperatures are 1500 and 100°F,respectively.a) Show the figure of the systemb) What thickness of fireclay brick should be used?c) If an effective air gap of 1/8 in can be incorporated between the fireclay and insulating brick whenerecting the wall without impairing its structural support, what thickness of insulating brick will berequired?
Solve for this : An engine cover is made from 1 cm thick stainless steel plate (k = 14 W/m K). Air on the inside of the engine cover is heated to 340°C with a heat transfer coefficient of 7 W/m2K. Outside of the engine coverthe ambient air has a temperature of 70°C. If oil was spilled on the outside of the engine cover (ambient side), it could ignite if the surface temperature were to exceed 200°C. In this configuration, would spilled oil ignite? Use calculations to justify your answer. If a 4 mm thermal coating (k = 1.1 W/m K) was applied tothe outside of the engine, what would the outside temperature of the engine cover be reduced to?
Solving Thermal Properties Related Problems Estimate the thermal diffusivity of butter at 20°C.
Example 6: Calculate the critical radius of insulation for asbestos [k = 0.17 W/m · ◦C] surrounding a pipe and exposed to room air at 20◦C with h = 3.0 W/m2 · ◦C. Calculate the heat loss from a 200◦C, .5cm-diameter pipe when covered with the critical radius of insulation and without insulation.
Which material is the best for thermal conductor but also an effective insulator to attach the elctronic circuitry to a subtrate material. With the consideration that due to the heat generated by other components, the substrate material has a working environment of 800 - 1000 K.In your opinion which material is the best to substrate?Provide three materials and its comparison.
Need answer in detail please ! What is constant heat flux and Constant Surface Temperature?
Calculate the overall heat loss and the temperature profile for each interface if the length of the cylinder is 50 m.Please write your answers legibly.
Solve for this: A transparent film is to be bonded to a plate. For the bond to cure properly, a temperature of 65°C is to be maintained between the film and the plate. The transparent film is 3 mm thick and has a thermal conductivity of 0.05 W/m·K. The solid plate is 10 mm thick and has a thermal conductivity of 1.2 W/m·K. The convection heat transfer coefficient is 75 W/m2·K off of the film surface. If the bottom of the plateis maintained at 45°C, determine the ambient temperature and the surface temperature of the film.