An AISI 304 stainless steel sheet is going through an annealing process inside an electrically heated oven. The ambient air inside the oven is 600°C, while the surrounding surfaces of the oven are at a uniform temperature of 750°C. If the emissivity of the stainless steel sheet is 0.40 and the average convection heat transfer coefficient is 10 W/m2·K, determine the temperature of the stainless steel sheet.

Q: A 10 cm diameter aluminum ball is to be heated from 94°C to an average temperature of 140°C in 30…

A: Given that ,  Diameter D=10cm Radius r=5cm T1=94°CT2=140°Ct=30min=30×60s=1800sCp=0.91kJ/kgK

Q: The wall of a furnace has a thickness of 5 cm and thermal conductivity of 0.7 W/m-°C. The inside…

A:

Q: A person stands in front of a fire at 650 C in a room where air is at 5°C. Assuming the body…

A: Given data T = 650° C  Temperature of air = 5°C Body temperature = 37°C Coefficient of conduction =…

Q: A 3.50 kg of ice at 0°C was placed inside a cylindrical container (k=0.300 W/m-°C), which has a…

A: To solve this problem we have used fouriers law of heat conduction, we multiplied with factor 2 in…

Q: Heat is conducted through a material with a temperature gradient of – 9000 K/m. The conductivity of…

A: Given Temperature gradient  dTdx = -9000 km Conductivity of the material  k = 25 Wm.k Convective…

Q: A person stands in a breezy room whose temperature is 20 C. The emissivity of the person is 0.35.…

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Q: A steel plate having a thickness of 100 mm is suddenly exposed to a hot gas at 1000 oC in a furnace.…

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Q: What is the heat power lost from the cup to the air due to convection? Take the external surface of…

A: Given :  The convection heat transfer coefficient h=7.10 Wm2K Cup and liquid radius  r=4 cm =0.04 m…

Q: A 2-m-long, 4-cm-diameter electrical wire extends across a room at 20°C, as Shown in Fig. below.…

A: The length of the rod is .The diameter of the rod is .The surrounding temperature is The surface…

Q: A person stands in front of a fire at 650°C in a room where air is at 5°C. Assuming the body…

A: Answer: The net heat flow from the body is 291.1 W.

Q: Estimate the rate of heat transfer (J/s) from a 50.6°C sphere which has an emissivity of 0.2 if it…

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Q: Under conditions for which the same room temperature is maintained by a heating or cooling system,…

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Q: Q3: Consider a (15cm x 20cm) printed circuit board (PCB) that has electronic components on one side…

A: Given data: Calculate the average temperature of the surrounding.

Q: Does any of the energy of the sun reach the earth by conduction or convection?

A: Since there is no atmosphere in space between the Sun and the earth, the significant portion of the…

Q: The top of a large industrial hot water heater has been left uninsulated. The top may be modeled as…

A: To calculate the heat transfer rate from the top of the hot water heater, we need to consider both…

Q: Consider a person whose exposed surface area is 1.5 m2, emissivity is 0.5, and surface temperature…

A:

Q: A 50-cm x 50-cm circuit board that contains 121 square chips on one side is to be cooled by combined…

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Q: Consider a person standing in a roomn at 20°C with an exposed surface area of 1.5 m2. The deep body…

A: Given Data: Deep body temperature, T1=37 C The thickness of the skin, x=0.5 cm Thermal conductivity…

Q: Consider a person standing in a room. The inner surfaces of the walls, floors, and ceiling of the…

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Q: The wall of a furnace consists of 200 mm thick refractory brick (k = 3 Btu / hr-ft2-0F), 100 mm…

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Q: Determine the average temperature of the hot surface of the board, assuming the board is horizontal…

A: Given: PCB of 23 cm x 28 cm Board is horizontal, and hot surface facing up T∞=20°CHeat dissipated,…

Q: Answer shows Qtotal and Temperature at inner surface of window. 496W, 0.4°C Ob, 542W, 1.2°C O. 572W,…

A: Solution : Given data : Height (h)= 1.0 m                     Width (b)= 1.75 m…

Q: With a pressure of approximately 2 MPa, the two 6-cm-diameter, 18-cm-long aluminum bars (k = 176 W/m…

A:

Q: A 2-m-diameter thin-walled stainless steel spherical tank is filled with chemicals undergoing a…

A: Given data as per question Diameter =2 m Surface temperature = 500 c Air temperature  = 200 c…

Q: A cylindrical rod with a diameter of 20 mm and a length of 300 mm is heated to a temperature of…

A: Write the given data. Diameter, d=20 mm=0.02 mLenght, l=300 mm=0.3 mInitial temperature of rod,…

Q: Iron with a power rating of 1200 watts is left on the ironing board. The convective heat transfer…

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Q: Consider a person standing in a room kept at 22°C at all times. It was observed that the interior…

A: According to the information we know have to Take an individual in a room always kept at 295°K. The…

Q: A thin metal plate is insulated on the back and exposed to solar radiation on the front surface. The…

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Q: A 4.74 -m-internal-diameter spherical tank made of 1.5- cm-thick stainless steel (k = 15 W/m.°C) is…

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Q: A long 20 cm diameter shaft made of stainless steel 304 comes out of an oven at a uniform…

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Q: Consider a 1.5-m-high and 2.4-m-wide double-pane window consisting of two 3-mm-thick layers of glass…

A: In this problem, we will calculate the steady rate of heat transfer and the inner surface…

Q: The top surface of the passenger car of a train moving at a velocity of 115 km/h is 2.8 m wide and 8…

A: To find : The equilibrium temperature of the top surface of the car . Given: The velocity of train…

Q: Ice water of 0°C is stored in a spherical container made of steel with an inner diameter of 3 m and…

A:

Q: A heater plate measures 40 cm x 40 cm in the tank and is kept at a constant temperature of 70…

A: Given data: A = 40 cm x 40 cm Tp = 70o C Toil = 30o C ν=0.00026 m2 / s k=0.15 W / mK Pr=2900 Need to…

Q: Consider a 150 W incandescent lamp in a room at 25 °C. The filament of the lamp is 5 cm long and has…

A: (a) To find: The heat flux on the surface of the filament. Given: The length of the filament is L=5…

Q: A pipe 30 m long with an outer diameter of 75 mm is used to deliver steam at a rate of 1500 kg /…

A: Pipe Length, L=30m Pipe diameter, d=75mm=0.075m Steam mass flow rate, m˙=1500 kg/hr=15003600…

Q: Consider a furnace (as a plane wall) which has a thickness of 15 cm and a surface area of 1 m?. The…

A: Given: The thickness of the wall, L = 15 cm = 0.15 m The surface area of the wall, A = 1 m^2 The…

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.