Determine the view factors F21, F12, F11, and F22 of a sphere (1) of diameter D (6.93 in) inside a cubical box (2) of length L = D. If the temperature at surfaces 1 and 2 are 600°R and 2000°R, respectively, calculate the net rate of radiation from surface 2 to surface 1. Use the geometric factor calculated from A

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: What do you call the phenomenon where all of an applied magnetic field is excluded from the body of…

A: Meissner–Ochsenfeld effect or Meissner effect can be defined as the exclusion of a magnetic field…

Q: be black-anodized and thus to have an effective emissivity of 0.90. Note that in radiation…

A: I already do that question so I know question 6.9. this is given below

Q: Two plates are separated by two radiation shields with emissivities of 0.10 and 0.15 for both sides.…

A: Emissivity of a radiation shield = 0.1 Emissivity of another radiation shield = 0.15 Temperature of…

Q: With the respect to incident radiation , transmissivity varies with?

A: It is to be mentioned with which quantity transmissivity varies in incident radiation.

Q: In a heat transfer problem, U is a function of? temperature and time length and time O width and…

A: U represent in heat transfer function is overall heat transfer coefficient which is time dependent…

Q: rates of radiation heat transfer

A: In thermal radiation heat transfers from higher temperature  to lower temperature  without the…

Q: What is potential energy surface (PES)? Draw PES to represent the variation of energy during…

A:

Q: If you are in an open place where the wind is blowing at 38 km/h and 12 °C, considering that at the…

A: Given Wind speed,U=38km/h T1=12 °C Skin temperature T2=28 °C Arm dimensions=122 cm long and 7600 mm…

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: If the gas pressure inside the rigid tank given in the figure increases, the work done by the gas…

A: Given Statement: If the gas pressure inside the rigid tank given in the figure increases, the work…

Q: Calculate the view factor of F,2 of a sphere (1) of diameter D inside a cubical box (2) of L=D.

A: Given: Sphere diameter = D Cubical box L = D Calculate the view factor F12.

Q: In order for a fixed mass of helium atoms to maintain constant pressure while the temperature…

A: A fixed mass of helium atoms are kept in a cylinder.

Q: 1-128 A thin metal plate is insulated on the back and ex- posed to solar radiation on the front…

A: Given  Solar radiation incident on plate = 700 w/m2 Absorptivity of plate = 0.7 Temperature of…

Q: At atmospheric pressure, liquid water expands upon freezing. Explain what this means for the…

A: The phase boundary of liquid and solid water is a line that defines the difference in the two states…

Q: An opaque horizontal plate is well insulated on the edges and the lower surface. The irradiation on…

A:

Q: B-Compare between Kerosene and Lube oil according to the following(Put > or <) 1- Kerosene 0 Lube…

A: Crude oil is formed down below the Earth's crust. This oil is consists of many hydrocarbons which…

Q: A petrochemical storage tank is cylindrical in shape with a diameter of 6 m and a height of 10 m.…

A: Calculate the characteristic length of the cylinder as shown below:

Q: Fourier's Law represents conduction. Which of the following DOES NOT represent a form of Fourier's…

A: Hello Subscriber! There are multiple questions posted. As per our policy, we have solved the first…

Q: For a certain experiment, Freon-12 vapor is contained in a special glass tube at 30 C. It is desired…

A:

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: Air is located between two flat surfaces placed a distance 2b = 20 cm apart. The heated plate at y =…

A: To find:The general temperature and velocity distribution equations for the system and the…

Q: Density of fluids vary with temperature. *

A: given that is  density of fluid  depend on temperature ?

Q: radiation

A:

Q: An opaque horizontal plate is well insulated on the edges and the lower surface. The irradiation on…

A:

Q: The diffraction angle is (1) time(s) the incident angle of x-ray beam. (1) = 2. (1) = 0.5. (1) = 4.…

A: Draw the incident ray and diffracted ray on a sample as follows:

Q: 3. The region inside the inversion curve has and the region outside the inversion curve has…

A: joule thompson coefficient =(∂T∂P)H=μj   joule thompson coefficient(μj) is just the slope in T and P…

Q: In boiling point experiment the open :side of capillary tube set .Up- inside test tube .Down -…

A: In heat transfer, The boiling point of a liquid may be defined as the temperature at which the vapor…

Q: 2. According to the wettability picture, answer the following questions: a) The wettability for…

A: With the help of wettability picture, Find a)Wettability for both figures b)Factors that affect…

Q: Define the temperature of liquid nitrogen exposed to the atmosphere remains constant.

A: Liquid Nitrogen - Temperature -195.79 oC( 77K , -320 oF ). This the boiling point of liquid…

Q: 1. A black body at 3000 K emits radiation. Calculate the following: i. Monochromatic emissive power…

A: T = 3000 K wavelength = 7 cm =0.07 m we have to find the  monochromatic emissive power and the…

Q: Consider a cube with side A of 1.0 m. Assuming that the same mass of cube is converted to cubes with…

A: Given that    Cube with side A = 1.0 m  this is converted into many cubes with side = 1 micrometer…

Q: Example:. Consider a cylindrical body 30 cm in length and 15 cm in diameter at 327°C suspended in…

A: (a) To determine the rate at which the cylinder emits radiation energy, we can use the…

Q: Calculate the view factor F12 of a sphere (1) of diameter D inside a cubical box (2) of L=D

A: Given: Sphere diameter = D Cubical box L = D Calculate the view factor F12.

Q: Approximately what fraction of sea level O2 pressure is present at an altitude of 42 km if the…

A:

Q: The surface of a blackbody is at 500 K temperature. The wavelength of the maximum monochromatic…

A:

Q: 1.B.) - A person is in a room with an air temperature of 20°C. The exposed surface area and the skin…

A: From body to air there is radiation and from air to surface of the room there is convection, so will…

Q: The rear window of an automobile is defogged by pass- ing warm air over its inner surface. (a) If…

A:

Q: A metallic sphere of radius R is heated in an oven to a temperature of 600 ° F throughout, and then…

A: Given that the hot metal ball is allowed to cool in ambient air. We need to find the differential…

Q: A circular grill of diameter 0.25 m and emissivity 0.9 is maintained at a constant surface…

A: Given  Diameter of grill = 0.25 m                              = 0.125 m Emissivity (e) = 0.9…

Q: A block iron Plate (k=25 ₁) at 300c is exPasodl to the surrounding air. at 30c. It con vects onel…

A: Given,

Q: 1) Consider the infinitely tall, annular mixing tank. The fluid to be mixed is between the inner…

A: Given: Fluid is mixing in an annulus between inner cylinder and outer wall Inner cylinder angular…

Q: Evaluate the statement whether it is true or false: In the experiment on the determination of…

A: