Calculate the total radiation of a vertical surface at 2:30 pm in Bandar Baru Bangi [please use:(BBB) Longitude = 101° 48’ E, Latitude =2 ° 56’ N ) facing N60 °W on 21st Dec. In front of the surface is the swimming pool. Assume : reflected swimming pool factor, r=0.30 and Gth= 500 Btu/hr.ft2

Q: In a biprism experiment, the slit is illuminated by the light of wavelength 5890A.the distance…

A: The given data are: λ=5890 A=5890×10-10 mD=0.8 md=0.2 cm=0.002 mx=10 cm=0.1 m Here, λ denotes the…

Q: A large capacity with a small hole and kept at temperature T is a good approximation for an ideal…

A: T = 400+ 273 = 673 K  U = 300  A = 6 mm2

Q: 3: Find the day length and the total radiation. HQ, incident on a

A:

Q: For a glass plate transmissivity and reflectivity are specified as 0.86 and 0.08 respectively, the…

A: Given Data⇒ Glass Transmissivity ζ=0.86 Reflectivity ρ=0.08

Q: The amount of energy emitted by a unit area of a black body at 300°C is approximately, a. 459 W/m?…

A: Temperature (T)  = 300°C = 573 K

Q: 2. Calculate the view factor FBA for the following shape. The radii for the hollow circle, circle A…

A: Given that, Radius of hollow circle A, rA=8 m,   and RA=10 m,Radius of circle B, RB=5 m,Vertical…

Q: One kind of optical storage medium is the Direct View Storage Tube (DVST).

A: Introduction A direct view storage tube (DVST) employs an electron gun and phosphor-coated…

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: 5. The spectral distribution of the radiation emitted by a diffuse surface is ap- proximated in the…

A: Given spectral distribution is: We have to obtain the emissive power and the total intensity

Q: A space satellite in the shape  of a sphere is traveling in outer space, where its surface…

A: Given data: TS=315.2 KT∞=2 Kε=0.15 Need to determine the heat loss per m2 by radiation.

Q: 1. A circular furnace has 2 end black surfaces and surface 1 is kept at 500 K and surface 2 is kept…

A:

Q: The sun is the only star whose size we can easily measure directly; astronomers therefore estimate…

A: LB=10,000×LS

Q: ) Define Stefan-Boltzmann Law and emissivity. b) Is there any surface whose emissivity value is…

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Q: Black body radiation: At a wavelength of 0.6 mm, the black body emissive power is equal to 108W/m³.…

A:

Q: The velocity of light in space is approximately186,000 mi/s. The velocity of light in units of…

A: Given: The velocity of light in space is V=186000 mi/s.

Q: A half cylindrical shell with a radius of 75 cm is held at 200°C and has an emissivity of 0.4. A…

A:

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

A:

Q: A solar dish has a reflector with a diameter of 100 cm and a receiver having a diamter of 10 cm. If…

A: Given     Reflector diameter, Dr = 100 cm       Receiver diameter, D = 10 cm

Q: 1. Consider an opaque horizontal plate that is well insulated on its backside. The irradiation on…

A: Given Irradiation G = 3000 wm2Reflected Gr = 500 wm2emmissivity = 0.5plate temperature Tp = 150…

Q: A solar pond, 1.5 m deep, is built in Pondicherry (11°56' N). The following values of global and…

A:

Q: Q1(b): Taking X as the lowest view point, sketch the isometric view of the part.

A: We must combine the three views to get the 3 dimensional view of the object. Dotted lines indicate…

Q: 2.a. What is the total Power emitted (in the form of electromagnetic radiation) by a solid…

A:

Q: The value of FPQ

A: Given data;  From the given figure, Three sets of parallel plates LM,NR and PQ.   View factor FU is…

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

A:

Q: The emissive power of a blackbody is P. If its absolute temperature is doubled, the emissive power…

A: Solution: Given dataEmissive power of black body (Eb)1 = P T1=TT2=2T

Q: 3. Complete the matrix of view factors below for the 4-Zone Enclosure: A: = 1.25 in?; A2 = 2.75 in?;…

A: A1 F14 = A4 F41 1.25 ×F14 = 5.72×0.07 F14 = 0.32 F11 + F12 + F13 + F14 = 1 0 + F12 + 0.25 + 0.32 = 1…

Q: 2. Find the view factors for this configuration. a. Fis b. Fia c. F12 0.25m -0.1m

A: (a) Consider the circle and write the expression for view factors. R51+R52+R53+R54+R55=1

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 monocrystalline silicon solar panel (active area: 1 m2) has an energy conversion efficiency of…

A: According to the question we have:- Active area or area of collector plate A=1 m2 maximum energy…

Q: List this type of electromagnetic radiation in order of (i) increasing frequency and (ii) decreasing…

A: i) Radio<Microwave<IR<Visible<UV<X-Ray

Q: 1. This problem concerns the difficulty of directly detecting Earth-like planets.The Bond albedo for…

A: The objective of the question is to calculate the fraction of the total emitted light from the Sun…

Q: A flat plate collector, facing due south, having two glass covers is located at (34.05° N, 74.38°…

A:

Q: 6.A 3-mm-thick window transmits 90 percent of the radiation between whole ranges of wavelength.…

A: Given data:

Q: Two parallel square plates [1.22 m by 1.22 m], 0.81 m apart, have emissivities of 0.5 (560 ⁰C) and…

A: Calculated heat exchange between two plates.

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: electrical power consumed by the hot

A: Given: Tr=297 K Tp=403 K D=250 mm= 0.25 m To determine: Power consumed

Q: what is the difference between the emissive power and irradiance

A: **As per company policy we are supposed to do only 1 question if you need the rest question repost…

Q: List this type of electromagnetic radiation in order of (i) increasing frequency and (ii) decreasing…

A: (i) increasing frequency   Frequency is directly proportional to the energy. Therefore, the order of…

Q: A 0.6m diameter sphere is suspended in an enclosure.  The ball is kept at a constant 200oC, while…

A:

Q: The behavior of two different surfaces with varying spectral emissivity are shown below. If the…

A: Given: The surface temperature, T1 = 3500 K The source temperature, T2 = 3000 K

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.