Power plants – Combustion products used as motive fluid – With exhaust treatment
Patent
1980-06-25
1982-10-26
Hart, Douglas
Power plants
Combustion products used as motive fluid
With exhaust treatment
60264, 110157, 181262, 2391273, 23926517, F02K 304, F23L 1300, B64D 3304
Patent
active
043555071
ABSTRACT:
Film cooling apparatus adapted to be connected into a conduit carrying a hot exhaust gas. The apparatus comprises single walled contoured duct means connectible to said conduit and a center-body aerodynamically shaped and supported within said duct means so as to form therewith an annular channel of zero pressure gradient. Slot means are provided in the single walled contoured duct means and in the center-body to enable a flow of cooling air over exterior surfaces thereof to maintain said surfaces at an acceptably low temperature. A network of ducting carries the cooling air to the contoured duct means and interior of the center-body. The duct means and center-body are preferably of circular cross-section taken orthogonally of the overall flow direction. The center-body is an axisymmetric bulb having annular slots for directing the cooling air over the exterior of said bulb. The center-body connects with a plenum chamber formed by said single walled duct means and an exterior section of the network of ducting. The plenum chamber is also connected to a source of cooling air. An entraining diffuser is connected to said contoured duct means downstream of the center-body. Slots in the center-body, duct means and entraining diffuser are preferably from about 0.25" to about 0.750" in width.
REFERENCES:
patent: 2988302 (1961-06-01), Smith
patent: 3970252 (1976-07-01), Smale
patent: 3981448 (1976-09-01), Demogenes
patent: 4004416 (1977-01-01), Amelio
patent: 4018046 (1977-04-01), Hurley
patent: 4044555 (1977-08-01), McLoughlin
patent: 4136518 (1979-01-01), Hurley
patent: 4215537 (1980-08-01), Hurley
patent: 4295332 (1981-10-01), Steyer
Bayly Donald L.
Coffey Clayton G.
Murray Stephen B.
Hart Douglas
Her Majesty the Queen in right of Canada as represented by the
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