On the exergetic capacity factor of a wind – Solar power generation system

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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On the exergetic capacity factor of a wind – Solar power generation system. / Xydis, George.

In: Journal of Cleaner Production, Vol. 47, 2013, p. 437–445.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Author

Xydis, George / On the exergetic capacity factor of a wind – Solar power generation system.

In: Journal of Cleaner Production, Vol. 47, 2013, p. 437–445.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{623d4bd94f4b4dc4a2ca59a5df735b5a,
title = "On the exergetic capacity factor of a wind – Solar power generation system",
keywords = "Exergetic Capacity Factor, Wind, Solar systems, System losses",
publisher = "Elsevier BV",
author = "George Xydis",
year = "2013",
doi = "10.1016/j.jclepro.2012.07.014",
volume = "47",
pages = "437–445",
journal = "Journal of Cleaner Production",
issn = "0959-6526",

}

RIS

TY - JOUR

T1 - On the exergetic capacity factor of a wind – Solar power generation system

A1 - Xydis,George

AU - Xydis,George

PB - Elsevier BV

PY - 2013

Y1 - 2013

N2 - In the recent years, exergy analysis has become a very important tool in the evaluation of systems’ efficiency. It aims on minimizing the energy related-system losses and therefore maximizing energy savings and helps society substantially to move towards sustainable development and cleaner production. In this paper, a detailed exergetic analysis aiming to identify the overall Exergetic Capacity Factor (ExCF) for a wind – solar power generation system was done. ExCF, as a new parameter, can be used for better classification and evaluation of renewable energy sources (RES). All the energy and exergy characteristics of wind and solar energy were examined in order to identify the variables that affect the power output of the hybrid system. A validated open source PV optimization tool was also included in the analysis, It was shown that parameters as e.g. air density or tracking losses, low irradiation losses play a crucial role in identifying the real and net wind and solar power output while planning new renewable energy projects and in fact do play a significant role on the wind – solar plant’s overall exergetic efficiency. In specific, it was found that air density varies from site to site influencing productivity. A difference of 6.2% on the productivity because of the air density was calculated. The wind and solar potential around a mountainous area were studied and presented based on field measurements and simulations. Since the number and the size of RES projects, over the last few years, are continually increasing, and new areas are required, the basic idea behind this research, was not only to introduce ExCF, as a new evaluation index for RES, but also to investigate the combined use of wind and solar energy under the same area and the benefits coming out of this combination.

AB - In the recent years, exergy analysis has become a very important tool in the evaluation of systems’ efficiency. It aims on minimizing the energy related-system losses and therefore maximizing energy savings and helps society substantially to move towards sustainable development and cleaner production. In this paper, a detailed exergetic analysis aiming to identify the overall Exergetic Capacity Factor (ExCF) for a wind – solar power generation system was done. ExCF, as a new parameter, can be used for better classification and evaluation of renewable energy sources (RES). All the energy and exergy characteristics of wind and solar energy were examined in order to identify the variables that affect the power output of the hybrid system. A validated open source PV optimization tool was also included in the analysis, It was shown that parameters as e.g. air density or tracking losses, low irradiation losses play a crucial role in identifying the real and net wind and solar power output while planning new renewable energy projects and in fact do play a significant role on the wind – solar plant’s overall exergetic efficiency. In specific, it was found that air density varies from site to site influencing productivity. A difference of 6.2% on the productivity because of the air density was calculated. The wind and solar potential around a mountainous area were studied and presented based on field measurements and simulations. Since the number and the size of RES projects, over the last few years, are continually increasing, and new areas are required, the basic idea behind this research, was not only to introduce ExCF, as a new evaluation index for RES, but also to investigate the combined use of wind and solar energy under the same area and the benefits coming out of this combination.

KW - Exergetic Capacity Factor

KW - Wind

KW - Solar systems

KW - System losses

U2 - 10.1016/j.jclepro.2012.07.014

DO - 10.1016/j.jclepro.2012.07.014

JO - Journal of Cleaner Production

JF - Journal of Cleaner Production

SN - 0959-6526

VL - 47

SP - 437

EP - 445

ER -