Thermodynamic performance assessment of an integrated geothermal powered supercritical regenerative organic Rankine cycle and parabolic trough solar collectors
| Autor: | Can Ozgur Colpan, Duygu Melek Cakici, Anil Erdogan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Exergy
Geothermal power Engineering 020209 energy Mechanical engineering 02 engineering and technology Industrial and Manufacturing Engineering 0202 electrical engineering electronic engineering information engineering Parabolic trough 0601 history and archaeology Electrical and Electronic Engineering Process engineering Condenser (heat transfer) Civil and Structural Engineering Organic Rankine cycle 060102 archaeology business.industry Mechanical Engineering 06 humanities and the arts Building and Construction Pollution Supercritical fluid General Energy Heat transfer Working fluid business |
| Zdroj: | Energy. 120:306-319 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2016.11.083 |
| Popis: | In this study, the thermodynamic performance of an integrated geothermal powered supercritical regenerative organic Rankine cycle (ORC) and parabolic trough solar collectors (PTSC) is assessed. A thermal model based on the principles of thermodynamics (mass, energy, and exergy balances) and heat transfer is first developed for the components of this integrated system. This model gives the performance assessment parameters of the system such as the electrical and exergetic efficiencies, total exergy destruction and loss, productivity lack, fuel depletion ratio, and improvement potential rate. To validate this model, the data of an existing geothermal power plant based on a supercritical ORC and literature data for the PTSC are used. After validation, parametric studies are conducted to assess the effect of some of the important design and operating parameters on the performance of the system. As a result of these studies, it is found that the integration of ORC and PTSC systems increases the net power output but decreases the electrical and exergetic efficiencies of the integrated system. It is also shown that R134a is the most suitable working fluid type for this system; and the PTSCs and air cooled condenser are the main sources of the exergy destructions. (C) 2016 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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