Stoves and furnaces – Hot-air furnaces – Compressed air
Patent
1993-04-02
1993-12-21
Price, Carl D.
Stoves and furnaces
Hot-air furnaces
Compressed air
126116R, 29890049, 2989005, 1651091, 165177, F24H 310
Patent
active
052713768
ABSTRACT:
A fuel-fired condensing furnace is provided with a specially designed heat exchanger structure having a metal primary section and a plastic secondary or recuperative section. The primary section is defined by a horizontally spaced series of identically sized, vertically serpentined metal combustor tubes adapted to receive a throughflow of a burning fuel-air mixture discharged from the furnace burner section. Each tube has an essentially straight inlet combustion section sized to permit essentially complete combustion therein of the burning fuel-air mixture received by the tube, and a plurality of vertically spaced horizontal heat transfer sections that are horizontally flattened and narrowed to enhance their combustion heat transfer to supply air being forced upwardly through the furnace housing. The heat transfer efficiency of the flattened tube sections is further enhanced by forming spaced series of indentations in their flattened opposite side walls to create combustion gas flow turbulence within their interiors, and air flow turbulence along their exterior surfaces.
REFERENCES:
patent: 2017201 (1935-10-01), Bossart et al.
patent: 2096272 (1937-10-01), Young
patent: 2190349 (1940-02-01), Beam
patent: 2324707 (1943-07-01), Johnson
patent: 2347957 (1944-05-01), McCullough
patent: 2525400 (1950-10-01), Crawford
patent: 2682867 (1954-07-01), Cartter
patent: 2733908 (1956-02-01), Graham
patent: 3294082 (1966-12-01), Norris
patent: 3306353 (1967-02-01), Burne
patent: 3592029 (1971-07-01), Ritter
patent: 3779312 (1973-12-01), Withers, Jr. et al.
patent: 3800868 (1974-04-01), Berkowitz et al.
patent: 3826304 (1974-07-01), Withers, Jr. et al.
patent: 4175419 (1979-11-01), Mabery
patent: 4470452 (1984-09-01), Rhodes
patent: 4561421 (1985-12-01), Hwang et al.
patent: 4589481 (1986-05-01), Manssom
patent: 4641705 (1987-02-01), Gorman
patent: 4708197 (1987-11-01), Robbins
patent: 4732713 (1988-03-01), Korsel
patent: 4781248 (1988-11-01), Pfeiffer
patent: 4794983 (1989-01-01), Yoshida et al.
patent: 4807588 (1989-01-01), Bentley et al.
patent: 4848314 (1989-07-01), Bentley
patent: 4907648 (1990-03-01), Emmerict et al.
patent: 4923045 (1990-05-01), Fletcher et al.
patent: 4955435 (1990-01-01), Shuster et al.
patent: 4974579 (1990-12-01), Shellenberger
patent: 5094224 (1992-03-01), Diesch
patent: 5099576 (1992-03-01), Shinmura
Kays & London, "Compact Heat Exchangers" (1984) pp. 173, 179.
J. Redman, Non-Metallic Heat Exchanger The Chemical Engineer, No. 17, pp. 17-26, Apr. 1989.
D. M. Bigg, Stickford & Talbert-Application of Polymeric Materials for Condensing Heat Exchangers, Polymer Eng. & Sciences, vol. 29, No. 16, pp. 1111-1116, Aug. '89.
B. S. Mora & S. R. Plucinsky-High Temperature Engineering Plastics for Use in Condensing Heat Exchangers Proceedings of the 1987 Intl. Symposium on Condensing Heat Exchangers BNL-52068, CRT-87-00912, pp. 235-252, Apr., 1987.
F. Preto et al.-Development & Performance of a High Efficiency Gas-Fired Furnace Equipped with a Plastic Condensing Heat Exchanger Proceedings of the '87 Intl. Symposium on Condensing Heat Exchangers-BNL-52068, CRT-87-0091.2, pp. 183-198 Apr. '87.
Jakobs Diane M.
Lu Lin-Tao
Shenasa Ali
Stokes Gallen W.
Price Carl D.
Rheem Manufacturing Company
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