| Issue |
MATEC Web Conf.
Volume 141, 2017
The Fifth International Youth Forum “Smart Grids 2017”
|
|
|---|---|---|
| Article Number | 01025 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/matecconf/201714101025 | |
| Published online | 12 December 2017 | |
Decision working medium for lower cycle CCGT trinary type
National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
* Corresponding author: s.tzibulsky@yandex.ru
The object of the study are low-boiling substances, which can be used as working fluid in the Organic Rankine cycle (ORC) combine cycle gas turbine (CCGT) trinary type. Purpose of research is search for substances with the best thermodynamic, thermophysical and ecological properties. The calculation algorithm represents a mathematical calculation of CCGT in which the lower cycle, operating on low-boiling fluid and utilizes low-potential heat, as an air-cooling device On the basis of available scientific and practical facts on the use of working fluids the organic Rankine cycle for analysis were selected ozone-safe refrigerant: butane, pentane, R236ea, R236fa, R123, R245ca, R245fa, R365mfc, RC318. For these substances were found and tabulated critical pressure and temperature, condensation pressure, density and dynamic viscosity at a given condensation temperature. Studies have shown that the highest thermal net efficiency is achieved when using natural Freon pentane and synthetic R365mfc. Net efficiency CCGT strongly depends on the condensation temperature of the substance. For example, when using pentane when the condensation temperature decreases on 10 °C. net efficiency increases about 0.71 %.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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