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In which absorber matrix material is arranged and the back absorber plate is eliminated?

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in Energy Engineering by (91.0k points)
In which absorber matrix material is arranged and the back absorber plate is eliminated?

(a) Porous absorber plate

(b) Non-porous absorber plate

(c) Over lapped glass absorber

(d) Finned absorber

I had been asked this question during a job interview.

My question comes from Flat Plate Collectors in portion Solar Energy of Energy Engineering

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The correct choice is (a) Porous absorber plate

For explanation I would say: In the porous bed air heater, the matrix material is arranged and the back absorber plate is eliminated. A single glazed porous bed collector with a reflecting honey comb, extending above the porous to just under the glass cover have theoretically examined.

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