Heat exchange – Spur tube projects into enclosure
Patent
1981-12-07
1984-10-30
Cline, William R.
Heat exchange
Spur tube projects into enclosure
165DIG6, 165DIG8, F28D 712
Patent
active
044795343
ABSTRACT:
A concentric tube type recuperative heat exchanger that includes an outer transparent tube 22 and an inner metallic tube 24 connected to suitable headers 12 and 14. The outer tube 24 is closed at the bottom end and open at the top end in order that cool air may be directed down through the open ended inner tube and up through the annular space therebetween where it may accept radiant energy transmitted through transparent tube 22. A tubular heat shield 36 of apertured metal lying in the annular space between tubes absorbs radiant heat passing directly through transparent tube 22 and that which is reflected from inner tube 24. Shield 36 serves simultaneously as a means for increasing the turbulence of fluid flowing through the annular space between tubes and as a heat sink that absorbs heat radiated between tube walls.
REFERENCES:
patent: 2670945 (1954-03-01), Hazen
patent: 2937855 (1960-05-01), Hazen
patent: 3586098 (1971-06-01), Wellensiek
patent: 4048983 (1977-09-01), Pei
patent: 4106556 (1978-08-01), Heyn et al.
patent: 4304222 (1981-12-01), Novinger
Cline William R.
Habelt William W.
McNally John F.
The Air Preheater Company, Inc.
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