Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent
1991-12-17
1997-12-09
Carone, Michael J.
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
416 96A, 415115, F01D 518
Patent
active
056953216
ABSTRACT:
A turbine blade includes an airfoil having opposite first and second sides and an internal passage extending longitudinally therebetween. A plurality of turbulator ribs extend from the first side into the passage and have substantially identical configurations including first and second ends having a span axis extending therebetween, first and second sides having a width therebetween, and a base and a tip having a height e measured therebetween. The passage includes a height H for defining a rib-to-passage height ratio e/H. Adjacent ribs are spaced apart at a longitudinal spacing S for defining a rib spacing-to-height ratio S/e. The rib configuration varies along the span axis between the rib first and second ends for correspondingly varying at least one of the ratios e/H and S/e to effect a varying convective heat transfer enhancement along the rib span axis for increasing enhancement and reducing cooling airflow.
REFERENCES:
patent: 3628885 (1971-12-01), Sidenstick et al.
patent: 4180373 (1979-12-01), Moore et al.
patent: 4236870 (1980-12-01), Hucul, Jr. et al.
patent: 4257737 (1981-03-01), Andress et al.
patent: 4278400 (1981-07-01), Yamarik et al.
patent: 4416585 (1983-11-01), Abdel-Messeh
patent: 4474532 (1984-10-01), Pazder
patent: 4514144 (1985-04-01), Lee
patent: 4515526 (1985-05-01), Levengood
patent: 4775296 (1988-10-01), Schwarzmann et al.
patent: 4992026 (1991-02-01), Ohtomo et al.
patent: 5052889 (1991-10-01), Abdel-Messeh
J.C. Han et al, "Augmented Heat Transfer in Square Channels With Parallel, Crossed, and V-Shaped Angled Ribs," submitted to ASME Journal of Heat Transfer, Jun. 1990, pp. 1-23 and Figures 1-13.
S.D. Spring, "Improved Methods For Determining Heat Transfer," The Leading Edge, Winter 1987/1988, Contents page and pp. 4-9.
Metzger-Vedula-Breen,"The Effect of Rib Angle and Length on Convectio Heat Transfer in Rib-Roughened Triangular Ducts," ASME-JSME Thermal Engineering Conference vol. 3, 1987,pp.:327-333.
Metzger-Fan-Yu, "Effects of Rib Angle and Orientation on Local Heat Transfer in Square Channels with Angled Roughness Ribs", Compact Heat Exchangers, copyright 1989, pp.: Title and 151-167.
Carone Michael J.
General Electric Company
Hess Andrew C.
Traynham Wayne O.
Wesson Theresa M.
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