A spherical tank of diameter, D = 2 m that is filled with liquid nitrogen at 100 K is kept in an evacuated cubic enclosure whose sides are 3 m long. The emissivities of the spherical tank and the enclosure are 0.1 and 0.8, respectively. If the temperature of the cubic enclosure is measured to be 240 K, determine the net radiation of heat transfer to the liquid nitrogen, assuming the enclosure to be a real surface (as described earlier).

Q: The peak wavelength of radiation emitted by a black body at a temperature of 2000 K is 1.45 pm. If…

A: Given, Temperature T1 = 2000 K Peak wavelength of radiation emitted by body at T1 = λ1 = 1.45 μm…

Q: Calculate the ratio of the radiant energy emitted from a surface at 37ºC and an adjacent surface of…

A: Given: The surface temperature, T1 = 37 C The adjacent surface temperature, T2 = 35 C

Q: A furnace is located next to a dense array of cryogenic fluid piping.  The ice-covered piping…

A:

Q: In a cylinderical furnace of 1.5 m dia and 2 m length the curved surface is maintained at 1400 K,its…

A: Solution is given below.

Q: ed at 1400 K,its emis 7. The two ends are ed at 800 K and 600 ies are 0.65 and 0.55

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Q: A 39-cm diameter sphere at a constant uniform temperature of 84°C is inside a room at a room…

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Q: Required information Two coaxial cylinders of diameters D₁ = 0.10 m and D2 = 0.50 m and emissivities…

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Q: , electrical power consumed by the hot plate will be?

A: Given: Tr=297 K Tp=403 K D=250 mm emmisivity=0.8 To determine: The electrical power consumed

Q: = 20 mm. The A tube carries hot water across a factory in a tube with outer diameter Do tube surface…

A: Given data:Tube outer diameter (Do) = 20 mm= 0.02 mTube temperature (T1) = 450°C = 723 K…

Q: Consider a vertical 3-m-diameter cylindrical furnace whose surfaces closely approximate black…

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Q: A thin aluminum sheet with an emissivity of 0.18 on both sides is placed between two very large…

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Q: 2. Two large plates parallel plates having emissivities of 0.4 and 0.6 are maintained at…

A: Given data  Emissivities are 0.4 and 0.6 and emissivity of shield is 0.06 Temperature T1= 900K and…

Q: A thin-walled tube has its inner surface coated with polypropylene lining. The ASME Code for Process…

A: Given Data

Q: An enclosure has an inside area of 50 m2, and its inside surface is black. The enclosure is…

A: Given Data: As=50 m2Ao=0.01 m2qrad=52 W   To Find: A. Determine 1) the temperature of the enclosure…

Q: Two parallel plates (1mx0.5m) are maintained at uniform temperatures of T₁ = 1000K and T₂ = 500K and…

A: Area of both the plates, A1=A2=1 m* 0.5 m =0.5 m2Temperature of one plate, T1=1000 KTemperature…

Q: A directionally emitting surface has an emissivity of 0.7 for angles up to 45° from vertical and 0.2…

A: Solution: Emissivity = 0.7 for angles upto 45 degrees Emissivity =0.2 for rest of the angles

Q: Assuming the sun to be a black body emitting radiation with maximum intensity at 1 = 0.48u m,…

A:

Q: Two long parallel 20-cm-diameter cylinders are located 30 cm apart from each other. Both cylinders…

A: Given        Diameter, d = 20 cm            Length, L = 30 cm Temperature, T1 = 425 K…

Q: Two very large parallel plates are maintained at uniform temperatures T1 = 901 K and T2 = 426 K and…

A: Given data:

Q: In radiative calculations, what is the view factor of the surface of the outside of a pipe with…

A: View factor The fraction of diffusely distributed radiation that leaves a surface and reaches to…

Q: at 800°C and 300°C exchange heat by radiation. Calculat

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Q: A circular disk (ignore its thickness) of D = 1 m diameter is placed over a barbecue pit…

A: Step 1:  Step 2:Additional Information:You might need to look up the value of the Stefan-Boltzmann…

Q: A circular disk (ignore its thickness) of D = 1 m diameter is placed over a barbecue pit maintained…

A: B) To plot \( q_{\text{net,d}} \) as a function of \( T_{\text{disk}} \) for \( 300 \, \text{K} <…

Q: Two parallel disks of diameter D=0.8 m seperated by L=0.4 m are located directly on top of each…

A: As per given question Determine the net rate of radiation heat transfer from the disks to the…

Q: A flat-plate collector with one glass cover is placed in horizontal. The absorber plate temperature…

A:

Q: Two large walls are required to be maintained at constant temperatures of 800°F and 1200°F .Assuming…

A: Given:  T1 = 1200 F = 922.04 K T2 = 800 F = 699.82 K

Q: This experiment is conducted to determine the emissivity of a certain material. A lone cylindrical…

A:

Q: 2. (a) Consider a 25-cm-diameter spherical ball at 700 K suspended in air and assume the…

A: Note - As per our guidelines we are supposed to answeronly one question. Kindly repost other…

Q: Cylindrical heaters are spaced equally at 5 cm apart in a row, and the heaters are positioned…

A: The space between cylinder heaters=5 CmAnd the daimeter of the each cylinder=19 Cm

Q: temperature of the black body?

A: Given; Peak wavelength of a black body emitted is;  λ1=1.75 μmBlack body emitted at a temperature;…

Q: 2000 degrees * C The temperature of the filament of an incandescent light bulb is . Assuming the…

A: Heat transfer is the form of energy transfer which transfers from one system to another system by…

Q: Consider a 25-cm-diameter spherical ball at 700 K suspended in air and assume the emissivity of the…

A:

Q: Define Emissivity of some materials at 300 K.

A: Thermal emissivity(ɛ) coefficient gives the heat or radiation absorbing and emission  capacity of a…

Q: Consider a circular grill whose diameter is 0.30 m. The bottom grill is covered with hot coal bricks…

A: given; diameter(d)=0.30mcoal brick temperature(T1)=1100ksteaks initial temperature(T2)=50c…

Q: An enclosure has an inside area of 50 m², and its inside surface is black and is maintained at a…

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Q: Two 75 cm parallel disks are separated by 40 cm and are aligned directly on top of each other. Both…

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Q: A cylindrical shape is with diameter of 1.2m and length of 1.2m. The top surface has an emissivity…

A:

Radiation

Radiation can be described as the energy in the form of a particular matter or electromagnetic waves traveling in the air and can be in the form of light, sound, and heat. Radiation can be detected through special instruments like X-rays. The radiation from a cooler object is less intense as compared to the radiation from hot objects.