Low-Leakage Modular Regenerators for Gas-Turbine Engines-Reference-Cited by-同舟云学术

Low-Leakage Modular Regenerators for Gas-Turbine Engines

Published:1998-04-01 Issue:2 Volume:120 Page:358-362
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Kluka J. A.¹,Wilson D. G.²

Affiliation:

1. Pratt & Whitney, Middletown, CT

2. Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Mass. Ave, Rm. 3-455, Cambridge, MA 02139

Abstract

One of the significant problems plaguing regenerator designs is seal leakage resulting in a reduction of thermal efficiency. This paper describes the preliminary design and analysis of a new regenerative heat-exchanger concept, called a modular regenerator, that promises to provide improved seal-leakage performance. The modular regenerator concept consists of a ceramic-honeycomb matrix discretized into rectangular blocks, called modules. Separating the matrix into modules substantially reduces the transverse sealing lengths and substantially increases the longitudinal sealing lengths as compared with typical rotary designs. Potential applications can range from small gas-turbine engines for automotive applications to large stationary gas turbines for industrial power generation. Descriptions of two types of modular regenerators are presented including sealing concepts. Results of seal leakage analysis for typical modular regenerators sized for a small gas-turbine engine (120 kW) predict leakage rates under one percent for most seal-clearance heights.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/120/2/358/5697836/358_1.pdf

Reference6 articles.

1. Harper, D. B., 1957, “Seal Leakage in the Rotary Regenerator and its Effect on Rotary Regenerator Design for Gas Turbines,” Transactions of the ASME, February, pp. 233–245.

2. Kluka, J. A., 1995, “The Design of Low-Leakage Modular Regenerators for Gas-Turbine Engines,” Master of Science in Aeronautics and Astronautics thesis, Massachusetts Institute of Technology, Cambridge, MA, June.

3. Wilson, D. G., 1993a, United States Patent, Patent Number 5,259,444, November 9.

4. Wilson D. G. , 1993b, “Low-Leakage and High-Flow Regenerators for Gas Turbine Engines,” Proc. Instn. Mech. Engrs., Vol. 207, pp. 195–202.

5. Wilson D. G. , 1993c, “The Supplementary-Fired Exhaust-Heated Cycle for Coal, Wood and Refuse-Derived Fuel,” Proc. Instn. Mech. Engrs., Vol. 207, pp. 203–208.

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