A food product with 73% moisture content in a 7 cm diameter can wants to be frozen. The density of the product is 970 kg / m³, the thermal conductivity is 1.2 W / (m K), and the initial freezing temperature is -1.75 ° C. After 8 hours in the freezing medium -25 ° C, the product temperature becomes -10 ° C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinder. h = W / (m² K)

Q: Air cools the top and bottom of an electronic chip that uniformly generates heat. At steady-state,…

A: It is given that air cools the top and bottom of the electronic chip. The chip is subjected to…

Q: Steel pipe (outer diameter 100 mm) is covered with two layers of insulation. The inner layer, 40 mm…

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Q: 6) Problem 4.7-6 (Page 350): Natural Convection Heat Loss in Double Window. 4.7-6. Natural…

A: Given that T1 =25 CT2 =10 Ch=2 mw=1.2 m Ra

Q: The inner and outer surfaces of a 0.5-cm-thick 2 m x 3 m window glass in summer are 48°C and 18°C,…

A: Given  Temperature inside wall T1 = 18 oC Temperature outside of wall T2 =48 oC Conductivity of wall…

Q: Steel pipe 1 cm thick, 1.0 m long and 5 cm deep, covered with 2 cm thick insulation. The wall…

A:

Q: A food product with 80% moisture content in a 7 cm diameter can wants to be frozen. The density of…

A: Given: Diameter of the food product, a = 7 cm = 0.07 m Freezer room temperature, Ta = -25°C = 248 K…

Q: For a stream of water (at 32 °C) flowing over a plate at a constant surface temperature of (90 °C)…

A: Given:  T∞ = Twater = 32 oC            Thermal conductivity of water at 32 oC = 0.6 W/m.k…

Q: 2. Heat is transferred steadily in one direction in a composite plane wall that is made of two…

A: The objective of this question is to determine the rate of heat transfer in the system and the…

Q: The inner and outer surfaces of a 0.5-cm-thick 2 m x 3 m window glass in summer are 48°C and 18°C,…

A: As per our guidelines, we are supposed to answer only 3 sub parts.

Q: Question 3 A pipeline is constructed by a proposed material M with thermal conductivity of 0.0015…

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Q: Heat Transfer in a Solid Using Equation of Energy Change. A solid of thickness L is at a uniform…

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Q: An uninsulated pipe passes through a room in which the air and walls are at 30°C. The outside…

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Q: The heat loss to the gas if the length of the pipe is 5.0 ? b. The temperature drop due to the…

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Q: An aluminum bar has a diameter of 11 cm and is initially uniform in temperatureat 300◦C. If it is…

A: Lumped system analysis assumes a uniform temperature distribution throughout the body, which implies…

Q: A circumferential fin of rectangular profile has a thickness of 0.7 mm and is installed on a tube…

A: Assumptions- Thickness = y Convective heat transfer coefficient = h Thermal conductivity of fin…

Q: Steam at 140 ° C flows in a pipe having an inner radius of 45 mm and an outer radius of 55 mm. The…

A: The rate of heat transfer through a pipe is calculated as, Q=Ti-To1Aihi+ln(ro/ri)2πkwL+1Aoho Where,…

Q: Calculate the heat flow every 1.7 hours through the outside fluid film from a 16.2 m² flat vertical…

A: Given data are as follows: Area of wall = 16.2 m2. Convective heat transfer coefficient h = 7W/m2-K…

Q: The inner and outer surfaces of a 0.5-cm-thick 2 m x 3 m window glass in summer are 48°C and 18°C,…

A: GIVEN THAT  INSIDE TEMPERATURE T1 = 18oC Out side temperature T2 = 48oC Heat trasfer area A = 2×3…

Q: A steam pipe with 80 mm diameter passes through a room at 25°C (both air and walls). The pipe is…

A:

Q: A 16-m x 8.5-m section of wall of an industrial furnace burning natural gas is not insulated. outer…

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Q: The gas at an average temperature of 180 oC is transported through a steel (steel-46 W/m2.K) pipe…

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Q: Air at 20°C blows over a 50 x 75 cm hot plate made of carbon steel (AISI 1010) with 2 cm thickness.…

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Q: Through a laboratory experiment it was determined that the heat flow through a wall of an unknown…

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Q: Problem 5: The energy lost from a 10 cm thick slab of steel is 50 W. Assuming the temperature…

A: Thick Ness of slab t = 10 cm                                  = 0.1 mThermal conductivity k = 45 W/…

Q: The gas at an average temperature of 180 oC is transported through a steel (steel-46 W/m2.K) pipe…

A: Heat transfer takes place from a steel pipe through conduction and convection.

Q: A certain matenial 2.5 em thick, with a cross-sectional area of 0.1 m, has one side maintained at…

A: Given, T3=95oC,T2=62oC,T1=35oC,∆x=0.025 m Assume Linear variation of thermal conductivity,…

Q: For the plane wall shown, solve the conduction equation, deriving an algebraic expression for the…

A: Conduction is a simple heat transfer process in which heat transfers from one end to another end of…

Q: A round tube (ID = 60mm, OD = 80mm) carrying liquid ammonia has a constant surface temperature of…

A: Given, Density of air, ρ = 1.225 kg/m3 Inner diameter of the insulation, D = 80 mm +2×8 mm= 96×1…

Q: b) A heated sphere of radius R is placed in a large amount of stagnant fluid. Consider the heat…

A: Given:The temperature at the share is constant,So, at r=R, T=TR, and throughout the liquid it…

Q: Q4) Consider a 20-cm-thick large concrete plane wall (k = 27°C and h1 = 5 W/m². 12 W/m² °C on the…

A: Given Data The thickness of concrete = 20 cm = 0.2 m Thermal Conductivity of concrete (k) = 0.77…

Q: A 3-inch Sched 40 steel pipe has a thermal conductivity of k = 15 W/m ° C covered with a 2.5 cm…

A: Given data: Dimension of pipe = 3 in schedule 40 kpipe = 15 W/m.0C Thickness of insulating material…

Q: Calculate the heat loss from a double-pane glass window consisting of two pieces af glass, each…

A: Given: The window is made up of a glass of thickness i.e. L1 = L2 = 10 mm or 0.01 m each and in the…

Q: Steel pipe 3 cm thick, 1.0 m long and 10 cm deep, covered with 6 cm thick insulation. The wall…

A: Given data: Thickness of steel pipe = 3 cm Length of pipe = 1 m Depth of pipe= 10 cm Thickness of…

Q: The circular base, 4 mm thick, of a pan with a diameter of 150 mm can be made of materials with…

A: The thickness of the base of the circular pan=4mm=0.004m Diameter of the base=150mm=0.15m The amount…