A method for the primary design and matching of aerial and non-aerial recuperated micro-turbines

Articles in Press

Document Type : Research Paper

Authors

1 Propulsion Institute- Mechanical Faculty- Malk e Ashtar University

2 Mechanical Faculty - Malek Ashtar University

3 Sepehr Turbine Industry Co.

Abstract

The multiplicity of performance parameters and their interactions, as well as the matching issue of the
heat exchanger and the engine, are the most challenging issues in the first phase of designing a
recuperated microturbine. Here, using the experimental considerations and the thermodynamic, various
performance charts will be produced and the relationship between the variables and their intervals will
be determined. It was shown that, the optimum thermal performance can be achieved for compression
ratios between 3.5-5.0, and 2.75-4.0 for the aerial and non-aerial recuperated engines, respectively. For
the aerial types, the desired turbine-inlet-temperature varies in the range of 1100-1250, while the range
950-1250 is optimal for the non-aerial engines. In the aerial types, the thermal efficiency is more affected
by the pressure drop, therefore the use of laminar flow recuperators is inevitable for such applications.
For the non-aerial types, the thermal performance and PSFC drastically reduces for pressure ratios less
than 3.5.

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Main Subjects

Aerospace Knowledge and Technology Journal

Articles in Press, Accepted Manuscript
Available Online from 02 December 2023

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