BOOK - Principles of heating ventilating and air conditioning 17.12 A heat pipe air-to-air energy recovery device isbeing considered for a system requiring 9000 SCFM ofoutside air. Initially, a separate preheater was planned forbringing the outside air from its -2°F design ambientoutdoor temperature to 40°F. Determine:(a) the rating (Btu/h) and(b) the sensible effectiveness (%) to specify for the heatpipe unit if it is to eliminate the need for the air preheater.

Data we have v=9000 = cfm 9000 ft ³/min 9000(12 *0.0254)³/60 V = 4.2475 m³/sec W.K.T Density of…

Answered: arate preheater was p from its –2°F…

Engineering

Mechanical Engineering

arate preheater was p from its –2°F design

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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BOOK - Principles of heating ventilating and air conditioning

17.12 A heat pipe air-to-air energy recovery device is
being considered for a system requiring 9000 SCFM of
outside air. Initially, a separate preheater was planned for
bringing the outside air from its -2°F design ambient
outdoor temperature to 40°F. Determine:
(a) the rating (Btu/h) and
(b) the sensible effectiveness (%) to specify for the heat
pipe unit if it is to eliminate the need for the air preheater.

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