4 A solar panel is mounted on the roof of a house. Fig. 4.1 shows a section through part of the. solar, panel. sunlight trapped air - copper pipe, painted black water glass sheet insulating - metal backing sheet, painted black material Fig. 4.1 A pump makes water flow through the copper pipes. The water is heated by passing through the solar panel. (a) Select and explain three features of the solar panel that maximise, the final temperature of the water.
4 A solar panel is mounted on the roof of a house. Fig. 4.1 shows a section through part of the. solar, panel. sunlight trapped air - copper pipe, painted black water glass sheet insulating - metal backing sheet, painted black material Fig. 4.1 A pump makes water flow through the copper pipes. The water is heated by passing through the solar panel. (a) Select and explain three features of the solar panel that maximise, the final temperature of the water.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
Transcribed Image Text:A solar panel is mounted on the roof of a house. Fig. 4.1 shows a section through part of the
solar, panel.
4
sunlight
trapped
air
copper pipe,
painted black
water
glass sheet
insulating
metal backing sheet,
painted black
material
Fig. 4.1
A pump makes water flow through the copper pipes. The water is heated by passing through the
solar panel.
(a) Select and explain three features of the solar panel that maximise, the final temperature of
the water.
Transcribed Image Text:(b) During one day, 250 kg of water is pumped through the solar panel. The temperature of this
water rises from 16 °C to 38 °C.
The water absorbs 25 % of the energy incident on the solar panel. The specific heat capacity
of water is 4200 J/ (kg °C).
Calculate the energy incident on the solar panel during that day.
(c) The solar panel in Fig. 4.1 is designed to heat water.
A person is deciding whether to install solar panels on her house.
List and explain three pieces of information she needs to consider in order to make her
decision.
(d) The Sun releases energy as a result of nuclear fusion.
State the meaning of nuclear fusion.
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