Fluid friction heater

Details Fluid friction heater Fluid friction heater

1979-04-30

1981-07-07

Yuen, Henry C.

Heating systems

Miscellaneous

Special liquid

126247, 122 26, 237 59, 237 56, F24C 900

Patent

active

042770203

ABSTRACT:
A fluid friction heater is disclosed. The heater includes a housing having a cylindrical inner surface. At least nearly circumferential, closely spaced grooves are formed in the inner surface of the housing, the depth of the grooves being small relative to the diameter of the surface itself. A drum is mounted within the housing and has a cylindrical outer surface in close proximity to the inner surface of the housing. The outer surface of the drum has at least nearly circumferential, closely spaced grooves formed in it as well. The pitch of the grooves in the respective surfaces are different from one another. A liquid is injected into the space between the inner surface of the housing and the outer surface of the drum. The housing and the drum rotate relative to one another so that the liquid passing between their respective surfaces is sheared and agitated by the respective grooves in the surfaces.

REFERENCES:
patent: 1149938 (1915-08-01), Nagelvoort
patent: 3720372 (1973-03-01), Jacobs
patent: 4143639 (1979-03-01), Frenette

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