Multi-pass helical coil thermal fluid heater

Details Multi-pass helical coil thermal fluid heater Multi-pass helical coil thermal fluid heater

1980-11-28

1982-11-09

Favors, Edward G.

Liquid heaters and vaporizers

Water tube

Coil

165163, F22B 3710

Patent

active

043579108

ABSTRACT:
This invention relates to a multi-pass helical coil thermal fluid heater of improved thermal efficiency. The thermal fluid is heated while being circulated within concentric helical coils of the heater which are arranged in such a manner to improve overall thermal efficiency and simplify construction. Provision is also made for preheating of the thermal fluid and the heater combustion air to further improve thermal efficiency.

REFERENCES:
patent: 373783 (1887-11-01), Musil
patent: 529204 (1894-11-01), Simpson
patent: 737346 (1903-08-01), Chenhalls
patent: 1266281 (1918-05-01), Lapp
patent: 2158735 (1939-05-01), Vigneault
patent: 2566627 (1951-09-01), Paulsen
patent: 2645210 (1953-07-01), Harris et al.
patent: 3359949 (1967-12-01), Bjarnason et al.
patent: 3529579 (1970-09-01), Wanson
patent: 3753423 (1973-08-01), Olson et al.
patent: 3841273 (1974-10-01), Finger et al.
patent: 4044727 (1977-08-01), Rychen et al.

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