Determine the amount of acres of land necessary to generate 50 MW of solarpower at noon in Philadelphia with an array of panels positioned horizontally. Assumethat the panels are 21 % efficient and that the solar irradiation at noon is 900 W/m².

Answered: Determine the amount of acres of land…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.44P

See similar textbooks

Similar questions

Determine the amount of acres of land necessary to generate 50 MW of solar power at noon in Philadelphia with an array of panels positioned horizontally. Assume that the panels are 21 % efficient and that the solar irradiation at noon is 900 W/m?
The room is 20 ft by 20 ft wide and 9 ft high. The floor is at 100°F, the walls are at 60°F, and the ceiling is at 40°F. All surfaces are assumed black. Calculate the net radiation heat transfer (a) from floor to walls and (b) from floor to ceiling.
20. PLEASE ANSWER ASAP
A plate-type solar energy collectorr with an absorbing surface covered by a glass is to receive an incident radiation of 800 W/m2. The glass plate has a reflectivity of 0.12 and a transmissivity of 0.80. The absorbing surface has an absorptivity of 0.90. The area of the collector is 5 m2. How much solar energy in watts is absorbed by the collector? ANSWER: 3060 WATTS
Two circular plates of radii r1= 4 cm and r2 = 2 cm are (9) cm apart. Find view factorF21.
A black body absorbs radiant energy at the rate of 5 kW/m2 . Calculate the temperature at which the rate of radiant heat transfer will be zero.
You can neglect radiation at the bottom of the plate; the bottom side of the plate has water flowing underneath it. Often, when dealing with liquids (rather than gases), one can neglect radiation because heat transfer due to convection is so much larger (liquids tend to have higher convection coefficient values than gases).
Irradiation on a semi-transparent medium is at a rate of 640 W/m². If 160 W/m² of the irradiation is reflected from the medium and 130 W/m² is transmitted through the medium, 1) Determine the absorptivity of the medium. 2) Determine the reflectivity of the medium. 3) Determine the transmissivity of the medium.
A black hole is a blackbody if ever there was one, so it should emit blackbody radiation, called Hawking radiation. A black hole of mass M has a total energy of MC2, a surface area of 16πG2M2 / c4 and a temperature of hc3 /16π2kGM. Estimate the typical wavelength of the Hawking radiation emitted by a one-solar-mass (2 x 1030 kg) black hole. Compare your answer to the size of the black hole
An enclosure has an inside area of 50 m2, and its inside surface is black. The enclosure is maintained at a constant temperature. A small opening in the enclosure has an area of 0.01 m2.The radiant power emitted from this opening is 52 W. A. Determine 1) the temperature of the enclosure surface, Ts, in K, 2) total emissive power and 3) total intensity. Hint: the radiant power measured is through the opening area (Ao).B. What is the wavelength l1 below which 10% of the emission is concentrated? What is the wavelength l2 above which 10% of the emission is concentrated?
How does radiosity for a surface differ from the emitted energy? For what kind of surfaces are these two quantities identical?
9. Consider a circular grill whose diameter is 0.30 m. The bottom grill is covered with hot coal bricks at 1 100 K, while the wire mesh on top of the grill is covered with steaks initially at 5 °C. The distance between the coal bricks and the steaks is 0.20 m. Treating both the steaks and the coal bricks as blackbodies, determine the initial rate of radiation heat transfer from the coal bricks to the steaks. Also, determine the initial rate of radiation heat transfer to the steaks if the side opening of the grill is covered by aluminum foil, which can be approximated as a reradiating surface.

SEE MORE QUESTIONS

Recommended textbooks for you

Principles of Heat Transfer (Activate Learning wi…

Mechanical Engineering

ISBN:

9781305387102

Author:

Kreith, Frank; Manglik, Raj M.

Publisher:

Cengage Learning