Two 75 cm parallel disks are separated by 40 cm and are aligned directly on top of each other. Both disks are black surfaces with temperatures of 450 K. The backs of the disks are insulated and the surroundings may be treated as a black body at 300 K. Determine the net radiation heat transfer from the disks to the environment.

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: Determine the net radiative heat transfer in an isoscales trapezoid (meaning, a trapezoid with two…

A: Here, consider the surface temperature of the structure as follows.

Q: emissivity of 0.85. Determine the net rate of radiation heat transfers between the two surfaces, and…

A: 1. Steady operating conditions exist 2. The surfaces are opaque, diffuse, and gray 3. Convection…

Q: Two long parallel plates with diffuse black surfaces are facing each other as shown in the…

A: Here, T1=427°C=700 KT2=327°C=600 Kε1=1ε2=1 To determine, the net radiation heat flux.

Q: Consider two coaxial parallel circular disks with a 0.5 m diameter spaced 1 meter apart and two…

A:

Q: Two long parallel plates with diffuse black surfaces are facing each other as shown in the…

A: Given: T1=427 C=700 KT2=327 C=600 K To find: Net radiation heat flux

Q: Calculate the net rate of energy exchange by thermal radiation between a  gray convex body 1 and its…

A:

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

A:

Q: Two very long cylindrical rods with a diameter of 20 cm are placed in parallel at a distance of 60…

A: given : d = 20 cm x = 60 cm T1 = 425 K T2 = 275 K Ts = 300 K L = 1 m   L1 = πd2 = π×0.22 = 0.314 m…

Q: The peak wavelength of radiation emitted by a black body at a temp peak wavelength of emitted…

A: Given data⇒ Peak wavelength of radiation emitted by the blackbody  λm1=1.45 μm Temperature (T1)=2000…

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: Two square plates of equal side (10) cm are 15 cm apart. Find view factor F12.

A:

Q: A long cylindrical power cable is shielded with polyethylene insulation. The power cable is placed…

A: Given data: Here subscript m- for metal rod                           P- Power cable…

Q: Daylight may be approximated as a blackbody at the effective surface temperature of 5800 K.…

A:

Q: Two plane disks each 1.25 m in diameter are parallel and directly opposed to each other. They are…

A:

Q: The wavelength at which the Sun emits its most intense light is about 550nm. Assuming the Sun…

A:

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

A:

Q: Earth absorbs only a fraction of incident sun energy. Can we consider it as blackbody according to…

A: A blackbody is an ideal body that can emit or absorb all types of wavelength. The black body has…

Q: An oil radiator has an outside surface area of 0.18 m2 and operates at a surface temperature of 85…

A:

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: Consider a 6 in-diameter spherical ball at 366 °C suspended in air. Assuming the ball closely…

A: Basics of Radiation heat transfer are used.

Q: Consider two coaxial parallel circular disks of equal diameter D = 1.55 m spaced apart by 1.55 m,…

A:

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: 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: Two plane disks each 125 cm in diameter are parallel and directly opposite each other. They are…

A: given; diameter of disc (d)=125cm=1.25mseperate distance (l)=50cm=0.5mtemperature of disc A…

Q: A circular ceramic plate that can be modelled as a blackbody is being heated by an electrical…

A: The heat transfer to the plate due to convection,

Q: The sonic screwdriver that Dr Who is wielding detects a radiation source that is indicated to be at…

A:

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: 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: 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: wo perfectly black surfaces are constructed so that all the radiant energy leaving a surface at…

A: Given:Temperature of first surface, T1=800°CTemperature of second surface, T2=250°C

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…

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.