12. A flat-plate solar thermal collector ofarea 2 m² has water inflow temperatureof 12°C and outflow of 52.5°C while theincident radiation is constant at 900W/m². The empirical efficiency equationof the collector is given by:(T. —Т.)-a73D0.68-7.3G,1. How would the plot of efficiency versusT-T/G, look like?IL What are the performance characteristics ofthis collector?III Calculate the approximate thermal efficiencyof this collector (assume T = 25).IV What efficiency is indicated if T =T, and whyis this efficiency indication wrong?%3D

Solution: Given Data: A=2 m2Tc=12oCGt=900 W/m2

1. How would the plot of efficiency versus To-T/G, look like? Il What are the performance characteristics of this collector? III Calculate the approximate thermal efficiency of this collector (assume T = 25). IV What efficiency is indicated if T =T, and why is this efficiency indication wrong? %3D

1. How would the plot of efficiency versus To-T/G, look like? Il What are the performance characteristics of this collector? III Calculate the approximate thermal efficiency of this collector (assume T = 25). IV What efficiency is indicated if T =T, and why is this efficiency indication wrong? %3D

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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Concept explainers

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.

Question

12. A flat-plate solar thermal collector of
area 2 m² has water inflow temperature
of 12°C and outflow of 52.5°C while the
incident radiation is constant at 900
W/m². The empirical efficiency equation
of the collector is given by:
(T. —Т.)
-
a
73D0.68-7.3
G,
1. How would the plot of efficiency versus
T-T/G, look like?
IL What are the performance characteristics of
this collector?
III Calculate the approximate thermal efficiency
of this collector (assume T = 25).
IV What efficiency is indicated if T =T, and why
is this efficiency indication wrong?
%3D

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