Enhancing the Efficiency of the Turbogenerator Cooling System Through the Use of Finned Tubes in the Gas Cooler

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Abstract

The reliability of a high-power turbogenerator largely depends on its cooling system. The trouble-free and efficient operation of this system, in particular the gas cooler, is a problem that has not been fully resolved as of now. A modernized design of a gas cooler for a 325 MW turbogenerator, featuring high-finned bimetallic tubes, is proposed in the paper. To substantiate the efficiency of such a design and determine the heat transfer reserve of the gas cooler, its thermal state was calculated. The obtained results showed that the water overheating in the gas cooler is 5 °C. At the same time, one section of the gas cooler provides heat loss removal of 1266 kW at a hydrogen flow rate of 6.66 m3/s and a cooling water flow rate of 200 m3/s, which meets the requirements for this gas cooler.

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Published

2025-10-20

Issue

Vol. 28 No. 3 (2025)

Section

Aerohydrodynamics and heat-mass transfer

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Copyright (c) 2025 Б. К. Шестак

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