Heat recovery device for use in return air duct of forced air fu

Heat exchange – Tubular structure – Projecting internal and external heat transfer means

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

138 38, 165DIG2, 181264, F28F 140

Patent

active

042678846

ABSTRACT:
An especially compact, highly efficient heat recovery device for use in the cool air return duct of a heating system may be easily installed in existing flue pipes and transfers the ordinarily wasted heat in the exhaust gases flowing through the flue pipe to the cool return air thereby preheating the latter and increasing the efficiency of the heating system. The device includes a three stage heat transfer structure housed within a heat conductive tubular member which cooperate to transfer heat away from the gases into the cool return air by means of conduction, convection and radiation processes. A first stage deflects a portion of the gases toward and into heat exchanging contact with the sidewalls of the tubular member and directs the remaining portion into a gas pervious heat storage trap which comprises the second stage. The third stage includes a perforated, heat deflecting and radiating cone structure which cooperates with the first and second stages to produce temperature stratification within the tubular member to further increase heat transfer to the cool return air.

REFERENCES:
patent: 373564 (1887-11-01), Meeze
patent: 1233558 (1917-07-01), Curtis
patent: 1377970 (1921-05-01), Parent
patent: 1922848 (1933-08-01), Harley
patent: 2608968 (1952-09-01), Moseley
patent: 3232341 (1966-02-01), Woodworth
patent: 3381746 (1968-05-01), Wiegmann et al.
patent: 3770081 (1973-11-01), Martin

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Heat recovery device for use in return air duct of forced air fu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heat recovery device for use in return air duct of forced air fu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat recovery device for use in return air duct of forced air fu will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1484469

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.