Sustainable Energy, SI Edition
2nd Edition
ISBN: 9781337672092
Author: DUNLAP, Richard A.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 9, Problem 5P
To determine
Find the diameter of a mirror array associated with a solar power tower that would replace a
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A 2 x 2 m flat plate solar collector for domestic hot water heating is shown in the figure. The incident solar radiation on the glass cover, which transmits 90% of the incident flux, is 750 W/m2. Water flows through the tubes soldered to the backside of the absorber plate, entering at a temperature of 25°C. The temperature of the glass cover is 27°C, and it radiates heat with an emissivity of 0.92 to the sky at –50°C. Additionally, the glass cover losses heat by convection to air at 20°C flowing over its surface at 30 km/h. Assume that the radiation heat transfer between the absorber plate and glass cover and the heat transfer through the back and sides of the collector is negligible.
In a parallel electrical circuit, the total current is the sum of the individualcurrents. An air conditioner has a blower and a compressor that are wired ina parallel circuit. The blower draws 1.042 amperes and the compressor draws11.95 amperes of current. When both are operating, what is the total currentdrawn?
A beam of light passes from glass with refractive index 1.58 into water with a refractive index 1.33. The
angle of the refracted ray in water is 58.0°.
a) Draw a sketch of the situation showing the interface between the media, the normal line, the incident
ray, the reflected ray, the refracted ray, and the angles of these rays relative to the normal line.
b) Calculate the angle of incidence in the glass.
Chapter 9 Solutions
Sustainable Energy, SI Edition
Knowledge Booster
Similar questions
- 4. An incandescent lamp has a tungsten filament whose resistance is 96 ohm at its operating temperature of 2900°C. Calculate the filament resistance when the lamp is disconnected from the electric source under which conditions the temperature is 24°C.arrow_forwardThe beam AB in the Figure supports a load which varies an intensity of 220 N/m to 890 N/m. Calculate the magnitude of the resultant load.arrow_forwardQ1: What is the primary process of converting solar energy into other form of energy, explain and give an example of each one of them? Q2: Determine the Sun's altitude angle , azimuth angle, and zenith angle at 5.00 P.M on December 15, 2017 for a location at 24.85° N latitude. Q3: Compare the power generated by the two shown systems 1 and 2, if each turbine have air velocity in that area was V= 5 m/sec and the air density p=1.19 kg/m³m while in system 2 to increase the air velocity we uses a truncated cone of area ration A1/A2=4. blades 5 m length, while thearrow_forward
- A poorly designed electronic device has two bolts attached to different parts of the device that almost touch each other in its interior as in the figure. The steel and brass bolts are at different electric potentials, and if they touch, a short circuit will develop, damaging the device. The initial gap between the ends of the bolts is d = 5.0 mm at 27°C. At what temperature will the bolts touch? Assume the distance between the walls of the device is not affected by the temperature change. Steel 0000000 0.010 m 0.030 m Brass 5.0 μmarrow_forwardA dual-pane window in a house is composed of two parallel panes of glass, each with an area of 2.23 m². Each pane of glass is 3.10 mm thick and the space between the panes is 12.5 mm thick and is filled with argon. (a) Calculate the heat flow through the window if the indoor temperature is 18.3°C and the outdoor temperature is -20.6°C (this is about -5°F). (b) Determine the temperature on the inside of the pane (this is in the argon-dilled region) closest to the outside of the house.arrow_forwardCalculate the change in 5 m long copper wire when its temperature changes by 60∘C. State your assumptions if there are any.arrow_forward
- PROBLEM 10: CHARGES Two charges Q, = -2 C and Q2 = -2 C are at the two vertices of an equilateral triangle, having a side length of 0.5 meters. What amount of electric field intensity is at the third vertex of the triangle if a positive test charge is placed?arrow_forwardLABORATORY ACTIVITY APPLICATION OF BERNOULLI'S THEOREM QUESTIONS: 1. What method does the apparatus use to capture energy loss? You could use mathematical equations to explain your point.arrow_forwardPolarizing windows, filters, etc. are often used to reduce the amount of light that enters the lens of a camera or into a room or a car. A library atrium has an overhead skylight that lets in too much light during the day which heats up the interior of the library far too much. The building engineer installs new double paned polarizing sky lights to reduce the intensity. If sunlight, which is unpolarized, has an average intensity of 1364 W/m2 what angle should the polarizing axis of the second pane of the window make with the polarizing axis of the first pane of the window in order to reduce the intensity of the sunlight to 35% of the original value?arrow_forward
- A certain parallel-plate capacitor is filled with a dielectric for which K = 6.50. The area of each plate is 0.0524 m², and the plates are separated by 2.97 mm. The capacitor will fail (short out and burn up) if the electric field between the plates exceeds 179 KN/C. What is the maximum energy that can be stored in the capacitor? Number i ! Units Jarrow_forwardS 3) A 60-kW radio transmitter on Earth sends its signal to a satellite 100 km away (below). At what distance in the same direction would the signal have the same maximum field strength if the transmitter's output power were increased to 90 kW? 1/10/2022 Dr AQEEL SAUM Raluarrow_forwardCurrent Attempt in Progress A violin string 17.4 cm long and fixed at both ends oscillates in its n = 1 mode. The speed of waves on the string is 238 m/s, and the speed of sound in air is 348 m/s. What are (a) the frequency and (b) the wavelength of the emitted sound wave? (a) Number i Units (b) Number i Units eTextbook and Mediaarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Engineering Fundamentals: An Introduction to Engi...Civil EngineeringISBN:9781305084766Author:Saeed MoaveniPublisher:Cengage Learning
Engineering Fundamentals: An Introduction to Engi...
Civil Engineering
ISBN:9781305084766
Author:Saeed Moaveni
Publisher:Cengage Learning