THERMAL SCIENCE

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Sergey V. Alekseenko

,

Lev A. Ogurechnikov

online first only

The use of natural heat of dry hot rocks of the earth with a gas coolant

ABSTRACT
The energy options for utilizing the deep heat of the Earth using n-pentane as a working fluid for generating electricity in the organic Rankine cycle (ORC) are analyzed. The relationships between the initial and final parameters of the cycle are determined. The ratio of the average diameters of turbine stages to the working blades height along the flow part is estimated. A satisfactory profile of the flow part of an axial single-flow multistage jet turbine with subsonic flow rates of the working gas has been obtained.
KEYWORDS
Rankine cycle, axial-type turbine, thermodynamics, diverging angle of the turbine stage
PAPER SUBMITTED: 2023-07-14
PAPER REVISED: 2023-09-15
PAPER ACCEPTED: 2023-09-26
PUBLISHED ONLINE: 2023-11-11
DOI REFERENCE: https://doi.org/10.2298/TSCI230714233A
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The use of natural heat of dry hot rocks of the earth with a gas coolant