Question 1 One hundred circumferential aluminum fins of rectangular profile are mounted on a 1.0-m tube having a diameter of 2.5 cm. The fins are 1 cm long and 2.0 mm thick. The base temperature is 180°C, and the convection environment is at 20°C with h=50 W/m? . °C. Calculate the total heat lost from the finned-tube arrangement over the 1.0-m length.

Q: The extent to which the tip condition affects the ther- mal performance of a fin depends on the fin…

A: There are many applications where it is needed to transfer heat from the system to the surroundings.…

Q: An aluminium tube carrying a hot liquid at 118°C has 12 integrally machined longitudinal fins on its…

A: To Find : The draw the sketch and explain the assumption. Given : The total lenght is l=281 mm. The…

Q: 3.26 A composite wall separates combustion gases at 2600°C from a liquid coolant at 100°C, with gas-…

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Q: A sphere of 80 mm diameter (k=50 W/m.K and a=1.5x106 m²/s) is initially at a uniform, elevated…

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Q: 1. Find the surface temperature of a 15 cm outside diameter pipe wrapped with 6 cm of 85% magnesia…

A: There are three mode of heat transfer : conduction, convection and radiation. heat transfer due to…

Q: Calculate the convective heat transfer rate per unit length from a 40-cm diameter horizontal pipe…

A: Given data Diameter of pipe = d = 40 cm = 0.4 mSurface Temperature = Ts = 95°CTemperature of…

Q: An overhead 25-m-long, uninsulated industrial steam pipe of 100 mm diameter is routed through a…

A:

Q: Problem 2: Consider a 1-m-high and 2-m-wide double pane window consisting of a 3-mm-thick layers of…

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Q: A horizontal pipe 1 ft (0.3048 m) in diameter is maintained at a temperature of 250°C in a room…

A: When the density of the borderline layer is heated, the fluid increases, and the colder fluid heats…

Q: The walls of a refrigerator are typically constructed by sand- wiching a layer of insulation between…

A: Given: Inside temperature (T∞,i)=4°COutside temperature…

Q: A house has a composite wall of wood, fiberglass insulation, and plaster board, as indicated in the…

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Q: A cylindrical steel tank with a diameter of 1.8m and a height of 2m, is insulated with polyurethane…

A: To find: The monthly energy cost. Given: The diameter of the tank is d=1.8 m. The height of the tank…

Q: Question 12 [5 Mark] A 10-cm-wide and 15-cm-high vertical hot surface in 25 °C air is to be cooled…

A: The objective of this question is to determine the optimum fin spacing and the rate of heat transfer…

Q: Write the expression for critical radius of insulation for a cylindrical pipe. Consider an insulated…

A: Critical radius of insulation:If the radius of insulation in sphere or cylindrical object is at…

Q: An aluminium tube carrying a hot liquid at 118°C has 12 integrally machined longitudinal fins on its…

A:

Q: An overhead 25-m-long, uninsulated industrial steam pipe of 162-mm diameter is routed through a…

A: The given data in the problem is shown in the following attached image:

Q: Question(2): The ceiling outer surface temperature of an oven is 60°C. If the oven is in an…

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Q: An egg (k = 0.6 W/m-K, r = 1100 kg/m3, cp = 3000 J/kg-K) is removed from boiling water at 95°C and…

A: Apply the energy balance equation for both conditions.

Q: صقات A coat is made of 5 layers of 0.1 mm thick synthetic fabric separated by 1.5 mm thick air…

A:

Q: A square pin fin (w=0.6 mm, L=33 mm) is attached to hot surface [87 mm * 69 mm] Ts= 176°C with…

A: Given data: w=0.6 mmL=33 mmTS=176°Ch=155 W/m2KTa=24°Cη=0.81d=1.5 mm Need to determine the overall…

Q: A horizontal pipe 1 ft (0.3048 m) in diameter is maintained at a temperature of 250°C in a room…

A: When the density of the borderline layer is heated, the fluid increases, and the colder fluid heats…

Q: Turbine blades mounted to a rotating disc in a gas turbine engine are exposed to a gas stream that…

A: Given data: Perimeter, P = 110 mm Ambient air temperature, T∞= 1300 °C length, L = 50 mm = 0.05 m…

Q: determine the heat flux that result from a 15°C temperature difference exsiting across the…

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Q: The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm…

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Q: Roof insulation: Insulation of the bare roof with 50 mm thick of polystyrene foam, roof area = 99m?,…

A: The thickness and thermal conductivity of the mediums through which heat is transmitted affect the…

Q: A horizontal 8 cm OD pipe carries steam at 150°C through a room at 17°C. The pipe is covered by a…

A: Since pipe material and thickness is not given let resistance offered by pipe is negligible i.e;…

Q: Consider two aluminum (k=180 W/mK) pin-fin heat sinks with 1 mm and 2 mm square pins both 25 mm…

A: Amount of conduction or convection or radiation in an object decides or predicts the amount of heat…

Q: Water at 25°C flows over a 30mm diameter cylinder with an embedded electrical heater. The cylinder…

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Q: steel pipe with an outside diameter of 45 mm carries a hot fluid at 539 K. The pipe is insulated…

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Q: Because you forgot to let the pipes drip during a freezing night, a section of an outdoor pipe is…

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Q: Problem 17.127: Circular fins of uniform cross section, with diameter of 10 mm and length of 50 mm,…

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Q: The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm…

A:

Q: An insulated steam pipe located where the ambient temperature is 32C, has an  inside diameter of 40…

A: Answer: The heat loss per unit length of pipe is 67.1804 Watt.

Q: theta/theta b= cosh*(m*(L-x)) / cosh*(mL)

A: L = length of the fin tipfor constant area of fin

Q: Question 12 [5 Mark] A 10-cm-wide and 15-cm-high vertical hot surface in 25 °C air is to be cooled…

A: The objective of this problem is to determine the optimum fin spacing and the rate of heat transfer…

Q: Problem 3 An annular aluminum (k = 240 W/m.K) fin of rectangular profile is attached to a circular…

A: An annular aluminum (k = 240 W/m.K) fin of rectangular profile is attached to a circular tube that…

Q: W Two-dimensional transient- Consider a 60-mm long aluminum fin (k = 186) with thickness of 1 mm…

A: The given solution is steady state analysis, WIll edit it into transient analysis form shortly

Q: A. Check whether the lumped system analysis is suitable. B. Determine the temperature of the copper…

A: For solution refer below images.

Q: Calculate the natural convection heat transfer coefficient for a vertical stainless pipe, 100 mm…

A: Given, Outside diameter of the pipe D= 100mm  Length of the pipe L= 0.75m Surface temperature of the…

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.