A completely solid object with k = 3.46 W / (m-K) and circular cross section to transfer heat by conduction, only. The temperature of any cross section of the object it is uniform. Determine the heat flux present.

Q: Determine the heat transfer rate through a spherical copper shell of thermal conductivity 386 W/m-K,…

A: The answer is given below

Q: 1) Hot water at an average temperature of 60°C is flowing through a 10-m section of a cast iron pipe…

A: Temperataure of water inside the pipe, T1=60 °C,Length of the pipe, L=10 m,Thermal conductivity of…

Q: A furnace wall comprises three layers of thickness 250 mm, 100 mm, and 150 mm with thermal…

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Q: t(x) Plane wall w2 →X L wn above is a wall with uniform heat generation. What could be the cause why…

A: The given figure shows a plane wall with uniform heat generation actually there are two cases occur…

Q: 20 mm diameter copper pipe is used to carry heated water, the external surface of the pipe is…

A: Given data: Diameter of copper pipe, d = 20 mm. Convective heat transfer coefficient of the…

Q: Determine the heat flux for a furnace wall made of fire clay if the furnace wall thickness is 6’’…

A: Given Data⇒ Wall thickness∆t=6'' Since we know that : 1 inch=0.0254 m ∆t=6×0.0254∆t=0.1524 m Thermal…

Q: 2. Show how to derive the thermal resistance of the spherical layer against heat conduction as…

A: Heat conduction equation for steady state condition is written and further integrated to get the…

Q: A hollow sphere is constructed of aluminium (k = 204 W/m K) with an inner diameter of 4 cm and an…

A: Given:Inner diameter,d=4cm=0.04mSo,inner radius=r=0.04m2=0.02mOuter diamter,D=8cm=0.08mSo,outer…

Q: An aluminum fin is attached to a transistor that generates heat at the rate of 300 W. The fin has a…

A: Given, Heat, Q=300WTotal surface area, A=9.0cm2Surronding temperature, To=27°C=300KContact area,…

Q: Heat Trarnsier & Applications ISTe Q1. The heat flux through a wood slab 50 mm thick, whose inner…

A: We have to find thermal conductivity of wood

Q: A 6.35 m of gylindrical tube whose inner surface is maintained at a temperature of T = 5°C is…

A: given data;lenth of the tube(l)=6.35minner radius(ri)=25mm=0.025mouter radius(ro)=75mm=0.075mthermal…

Q: calculate the reduction in the heat transfer rate if a 5-cm-insulation battwith thermal conductivity…

A: As heat transfer is given by, Q=-KAdTdxQA=-0.05*dT0.05=-dT

Q: Steam at 200 oC flows in a cast iron pipe (k = 70 W/m.K) whose inner and outer %3D diameters are D1…

A:

Q: Q3/ Circular fin of rectangular profile is attached to a 3.0-cm-diameter tube maintained at 100°C.…

A:

Q: An aluminum fin is attached to a transistor that generates heat at the rate of 300 W. The fin has a…

A: Write the given values along with the suitable variables. Note: The value of heat generation is way…

Q: A metal plate 10 mm thick at 30°C is suddenly expose heat flux of 3000 W/m2 and the other side is…

A: Thickness t=10mmt=30°CHeat flux=3000W/m2Heat transfer coefficient =50W/m2kDensity=8933kg/m3Specific…

Q: A plane wall (0.8 m x 0.6 m) at 10 oC is to be heated by attaching 7-cm-long, 3-mm-diameter pin fins…

A: Given data as per question Dimension of plate =0.8 m x 0.6 m Length of fin = 7 cm Diameter of fin =…

Q: Calculate the thermal conductivity (in W/m-K) of a material having a heat loss of 1028 watts, inside…

A: Given: The heat loss is Q=1028 W. The inside diameter is d1=59.4 cm. The thickness is t=118.4 mm.…

Q: 3. Hot water flows inside a 2.5 cm inner diameter tube, the tube has a wall thickness of 0.8 mm…

A: Given: Inner radius = 2.5 cm Thickness = 0.8 mm And 3 thermal resistances Correct answer: A 9.94…

Q: Two long cylinders 9.0 cm and 3.7 cm in diameter are completely surrounded by a medium with k -0.9…

A:

Q: Steam in a heating system flows through tubes whose outer diameter is 10 cm and whose walls are…

A:

Q: Steam in a heating system flows through tubes whose outer diameter is 3 cm and whose walls are…

A:

Q: An electrical cable is insulated with a material with k of 10W/mK. The convection heat transfer…

A:

Q: Q.4.A. A 3 cm-diameter aluminum cylinder is maintained at a temperature of 62 C in a large room…

A: Heat transfer  Heat transfer is the process in which heat is transfer from high temperature…

Q: Consider a pipe with an inner radius of 15 cm, an outer radius of 20 cm, and k = 15 W / m ∙ oC. The…

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Q: Q4- Along hollow copper cylinder has its inner surface maintained at 150-C and is buried in material…

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Q: A wall (0.5 m x 1.2 m), having thermal conductivity of 1.7 W/m.K. The temperatures at the inner and…

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Q: Water flows at 67 C inside a 2.5 cm inside diameter tube such that hi = 3500 W/m² .C. The tube has a…

A:

Q: Consider two-dimensional, steady-state conduction in a square cross section with prescribed surface…

A: Heat conduction is a parabolic partial differential equation. It is used to define the temperature…

Q: A wall with a thickness of 2 cm will be constructed from a material with a heat conduction…

A:

Q: A room is well insulated apart from a single-glazed window measuring 1 m2 and 4 mm thick. The…

A: To find: The convective heat transfer coefficient for outside hout. Given :  The Area is A=1 m2.…

Q: A 1 m long, 5 cm diameter, cylinder placed in an atmosphere of 40°C is provided with 12 longitudinal…

A: Given data as per question length of fin =2.5 cm Diameter of cylinder=5 cm The heat transfer…

Q: how is a three-dimensional heat equation reduced if heat transfer occurs in an insulated long, thin…

A: The 3 dimensional heat equation can be written as :   ∂2t∂x2+∂2t∂y2+∂2t∂z2+qgen =ρ ck ∂t∂τx,y,z are…

Q: a. Consider a 5-m-high, 8-m-long, and 0.20-m-thick wall whose representative cross section is as…

A: Answer: The total thermal resistance of the wall is 0.2 K/W.

Q: Calculate the heat transfer rate from a single-pane glass window with aninside surface temperature…

A: The law which describes the rate of heat transfer in conduction is known as Fourier's Law. According…

Q: 1. The resistance wire of a 1000 Watt iron is 40 cm long and has a diameter of D= 0.2cm. Determine…

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Q: Q2// Consider two-dimensional, steady- state conduction in a square cross section with prescribed…

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Q: The cylinder of an engine is I m long and has an outside diameter of 6 cm. The outside surface…

A: Given data as per question Length of cylinder =1 m Outside diameter =6cm Outer surface temperature…

Q: A very long fin ( k= 372 W/m .o C ) 2.5 cm diameter has one end maintained at 90 oC . The rod is…

A: As given fin is of infinite length so heat transfer is given as Q=kmθ0Ac Where k is thermal…

Q: (B) A furnace wall is composed of three layers, 10 cm of fire brick (k= 1.56 W/m. K), followed by 23…

A:

Q: A current of 200 A is passed through a stainless steel wire (k = 19 W/m.K) 3 mm in diameter. The…

A: Given data: The current in the wire is I=200 A The thermal conductivity of the wire is k=19 WmK The…

Q: Q3. A wall has straight fins of triangular profike. The fins are constructed of aluminium and are…

A: Given: Assuming thermal conductivity of aluminium (k)=210W/mK Thickness of the fin (t)=0.005mm…

Q: A pipe carrying hot gasses is insulated with a material having a thermal conductivity of 0.15 W/mK.…

A:

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.