This experiment is conducted to determine the emissivity of a certain material. A lone cylindrical rod of diameter D1 = 0.01 m is coated with this new material and is placed in an evacuated lone cylindrical enclosure of diameter D2 = 0.1 m and emissivity E2 = 0.95, which is cooled externally and maintained at a temperature of 200 K at all times. The rod is heated by passing electric current through it. When steady Operating conditions are reached, it Is observed that the rod Is dissipating electric power at a rate of 8 W per unit or its leneth and its surface temperature is 500 k, Based on these measurements, determine the emissivity of the coatine on the rod

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: A vertical 2-m-high and 5-m-wide double-pane window consists of two sheets of glass separated by a…

A: The given information in the problem is shown in the following attached image:

Q: EFFECT OF EMISSIVITY ON TEMPERATURE MEASUREMENT. The energy emit- ted from a piece of metal is…

A:

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: What is the average or total emissivity of the given radiation shields? Note: the radiation shield…

A: GIVEN THAT : E1 = 0.02 E2 = 0.03 According to the details provided in the question, we need to…

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

A:

Q: Ratio of the temperature?

A: Given; Total emmisive power of a surface is; ∈1=500 W/m2At a given temperature=T1∈1=1200 W/m2At a…

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: s of the wafer are e = 0.65 an

A: Tsur,h = 1150 KTsur,c  = 330 KEmmisivity, e = 0.65d = 0.78 mmT∞ = 700 Khu = 8 W/m2Khl = 4 W/m2K

Q: A long, thin-walled horizontal tube 10.0cm in diameter with an emissivity of 0.80 is maintained at…

A: Step 1:Step 2: Step 3: Step 4:

Q: Two large parallel plates having a gap of 10 mm in between them are maintained at temperatures 1000…

A:

Q: Consider a black spherical ball, with a diameter of 25 cm, is being suspended in air. Determine the…

A:

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

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: A sphere has a radius of 0.100 m. Its surface can be treated as a grey surface with emissivity 0.20…

A:

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

A: GIVEN DATA - λ1=1.45μm T1=2000K WE HAVE TO CALCULATE TEMPRATURE CORRESPONDING TO 2.90 WAVELENGTH

Q: Consider a silicon wafer positioned in a furnace that is zone-heated on the top section and cooled…

A:

Q: Liquefied natural gas (LNG) is transported around the globe using ships similar to that shown in…

A: Radius (r) = 20 m polyurethane foam thickness (t) = 30 cm = 0.3 m  Tsi = -162 ºC = -162 +273 = 111 K…

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

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

A: Given data:

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: 2. A 2-meter section of a 2-cm diameter metal pipe passes through an enclosed furnace. The…

A:

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

A:

Q: 12-37 Two concentric spheres of diameters D₁ = 0.3 m and D₂ = 0.8 m are maintained at uniform…

A:

Q: An opaque, horizontal plate has a thickness of L = 21 mm and thermal conductivity k = 25 W/m-K.…

A:

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

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: Calculate the "steady state” numerical values of the earth’s ground temperature Ts and the…

A:

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

A:

Q: - A furnace can be considered like a long semicylindrical duct of diameter D = 5 m. The base (1) and…

A: Radiation Radiation is the emission of energy in the form of waves or particles through space or…

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

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.