2 A solar collector wth an area of 1.5 m is installed on the rooftop of a heuse. Assume that the radiative energy amiving from the sun is 1000 Wm. The callector reflects 10% of the energy arriving on its surface. Also, the collector is not perfectly inaulated, and losses occur. The collector has a heat transfer caefficient h of 2 WmK. The side areas of the collector are assumed to be negligible. The ambien temperature is 20 °C and the collector is assumed to be at a temperature of 50 C. Consider that this temperaure is constant throughout the whole collector. The collector is assamed so behave like a black body. a What is the power output of the collector? bi What percentage of the tetal losses is caused by radiation?

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

A:

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

A: The outer diameter of the tubeThe inner diameter of the shieldThe outer surface temperature of the…

Q: Q.4 Determine radiation heat loss from a steel tube of outside diameter 60 mm and 5m long at a…

A: Data given-  D = 60 mm = 0.06 m  L = 5 m  T1 = 327+273 = 600 K  T2 = 25 +273 = 298 K  ε1 = 0.8  ε2 =…

Q: Consider a small surface of area A₁ = 7 x 10m², which emits diffusely with a total, hemispherical…

A: Given-***** Note-- I am assuming second data in part a as A2 beacuse A2 is not given*****To find-At…

Q: Heat transfer problem.The internal surface area is an enclosure is 50 meter square. The surface is…

A:

Q: A vessel for producing steam contains water at 100°C and is mounted on insulated walls above a…

A: As per the question, I'm going to calculate the radiative heat transfer and also the temperature.

Q: 40% of incident radiant energy on the surface of thermally transparent body is reflected back, if…

A: Let us represent, Reflectivity = ρ Transmissivity = τ  Emissivity = α   From the data given in…

Q: Using a polynomial equation solver, determine the steady-state surface temperature (Ts) of the…

A: Given Data: h=40 W/m2KT∞=25oCTsur=10oC   To Find: Steady-state surface temperature.

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.