A rectangular fin with k=43 W/m.C , thickness t=2 cm , length L=14 cm and width W=1 m. The base of the fin is maintained at a temperature of 200 C while the fin is exposed to a convection environment at T∞= 15 C and h∞ = 20 W/m2 .C .Using the chart , calculate the heat lost from the fin .

Q: The temperature of a cylindrical tank containing liquid nitrogen is -10°C. Tank diameter is 16 cm.…

A: Given data: Here, Ts represents the liquid temperature, d represents the diameter, Q̇ represents…

Q: 7. A 5-m-internal-diameter spherical tank made of 1.5-cm-thick stainless steel (k =15 W/m - °C) is…

A: The area of sphere at inner and outer surface is - Ai=4πri2=4π×2.52=78.54 m2,…

Q: 1. A residential building has height of 50 m and floor area (25 m x 30 m) as shown in figure below.…

A: Given data,Tout=0°CTin =22°CAir required=36m3/hrRoof area=25×30=750m2

Q: Two heat reservoirs with respective temperatures of 325 and 275 K are brought into contact by an…

A: Given data: T1=325 KT2=275 KL=200 cmA=24 cm2k=79.5 W/m.K Need to determine the heat flux between the…

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Q: a hot fluid of 200 °C.  How long does it take the rod temperature to reach 70% of the fluid…

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Q: Consider an apartment in a tower block as a cube of side L = 7.26 m. Since this apartment is…

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Q: The temperature distribution across a wall 0.25 m thick at a certain instant of time is T(x) = a +…

A:

Q: 2- A rectangular cross section fin (k-45 W/m °C) with L= 20 mm, W= 1 m, t = 3 mm thick and T-120 °C…

A: Given Data Thermal conductivity, K=45 W/mKLength of the fin, L=20mmwidth of the fin, W=1mthe…

Q: A pipe has inside diameter of 4 cm and wall thickness of 10 mm. At the inside surface of the pipe,…

A:

Q: A rectangular fin with k=43 W/m.C, thickness t=2 cm, length L=14 cm and width W=1 m. The base of the…

A:

Q: Ponder upon a 5-m-high, 8-m-long, and 0.22-m-thick wall whose representative cross section is as…

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Q: Calculate the heat flux in the middle of the wall

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Q: Consider a fin having 10-3 m perimeter and 10-6 m cross-sectional area is exposed to h = 30 W/m2K…

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Q: An annular fin of rectangular profile is attached to a 3.0 cm diameter tube maintained at 100°C. The…

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Q: A steam pipe, made of copper, has an inside diameter of 5 cm and an outside diameter of 6.2 cm. To…

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Q: A plane wall of nuclear fuel with thickness L = 0.1 m, is insulated on one side at x = 0 and covered…

A:

Q: wo heat reservoirs with respective temperatures of 325 and 275 K are brought into contact by an iron…

A: Given   Thermal conductivity, k = 79.5 W/m K              Temperature, T1 = 325 K…

Q: B/ An aluminum rod 3.5 cm in diameter and 25 cm long k = 204 W/m. C protrudes from a wall which is…

A: Given data  Diameter = 3.5 cm  Length = 25cm  k = 204 W/m ° C

Q: See the composite wall in the image below. The width and height of the wall are both 0.12 meters.…

A:

Q: A hollow spherical steel has an inner diameter of 30cm and outer diameter of 37cm. It is covered…

A: Given:Inner diameter of sphere, di=30 cmOuter diameter of sphere, do=37 cmThickness of insulation,…

Q: Electrical current flows through a cylindrical cable with a diameter of d = 4 mm generating thermal…

A:

Q: A hollow spherical steel has an inner diameter of 30cm and outer diameter of 37cm. It is covered…

A: Given:Inner diameter of sphere, di=30 cmOuter diameter of sphere, do=37 cmThickness of insulation,…

Q: A 90-amp electric current is flowing through a 6-mm diameter lead wire. The thermal conductivity of…

A:

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…

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Q: There is a 1.20-cm-thick stagnant air pocket. A) What thickness of cork would have the same…

A: Given data, (1) Stagnate air pocket t1 = 1.2 cm  K1 = 0.023 W/m.k Cork K2 = 0.046 W/m.k t2 =…

Q: A pin fin (L= 38 mm , d = 3.0 mm) attached to a hot surface, Ts = 159°C with a convection heat…

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Q: Determine the temperature variation inside the iron plate with a thickness 21 of 2 mm,…

A: A steady state is a state which remains the same over given time period. In heat transfer problems…

Q: A straight fin of rectangular profile ( k = 14 W/m . oC ) , thickness of t= 2 mm and L= 23 mm . The…

A: Given Data: The thermal conductivity of the fin is, k=14 W/m·°C. The thickness of the fin is, t=2…

Q: steel rod (k = 30 W/m degree) 1 cm in diameter and 7 cm long protrudes from a wall which is…

A: Given:K=30 W/mCd=1 cmL=7 cmTb=100°Ch=50 W/m2KT∞=30°C

Q: Consider one-dimensional, steady-state conditions for the plane composite wall shown be- low. The…

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Q: The rear window of a car is defrosted by the passage of warm air on the internal surface. If the…

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Q: 2- A rectangular cross section fin (k-45 W/m °C) with L-20 mm, W= 1 m, t = 3 mm L= thick and T,= 120…

A:

Q: Exercise 5 the bobul 3-75 Consider a 5-m-high 8-m-long, and 0.22-m-thick wall whose representative…

A: Given: The height of the wall, h = 5 m The total length of the wall, L = 8 m The total thickness of…

Q: 165mm W/m?-K ulated with several materials, and convection on the inside and outside of the pipe is…

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Q: Q3: A composite wall consists of an iron plate of thickness L1=3 cm and thermal conductivity of kl…

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Q: Pressurized steam flows through a pipe of 0.6 m diameter. The pipe is embedded in a concrete block…

A: Given: Surface Temperature of the concrete square block (T2)=301KSurface Temperature of the pipe…

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.