1
Which of the following are air heat plate collectors based on absorbing surface?
(A) . flat plate absorber
(B) . sandwich type absorber
(C) . corrugated plate absorber
(D) . overlapped transparent plate absorber
(©). transpiration absorber
Choose the correct answer from the options given below:
EXPLANATION
Convective Heat Transfer & Psychrometrics
- Classification of Solar Air Collectors by Absorber Plate:
- Solar flat-plate air heaters are classified by their absorber surface geometry:
- Flat plate absorber: Classic smooth planar metallic sheet.
- Corrugated plate absorber: V-corrugated or sinusoidal sheet increasing heat transfer area and turbulence.
- Overlapped transparent plate absorber: Slanted staggered glass slats facilitating solar radiation penetration.
- Transpiration absorber: Porous matrix or perforated mesh through which air bleeds directly to maximize convection.
- (B) Sandwich type is a mechanical panel construction, not a standard air collector absorber surface category.
- Conclusion: (A), (C), (D) and (E) only (Option 4).
Correct option: (4) (A), (C), (D) and (E) only.
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