Exergetic and economic evaluation of the effect of HRSG configurations on the performance of combined cycle power plants

In the present research study, the effect of HRSG pressure levels on exergy efficiency of combined cycle power plants is investigated. Hence, three types of gas turbine combined cycles, with the same gas turbine as a topping cycle are evaluated. A double pressure, and two triple pressure HRSGs (with...

Full description

Saved in:
Bibliographic Details
Main Authors: Mansouri, Mohammad Tajik, Ahmadi, Pouria, Kaviri, Abdolsaeid Ganjeh, Mohd. Jaafar, Mohammad Nazri
Format: Article
Published: 2012
Subjects:
Online Access:http://eprints.utm.my/id/eprint/46951/
http://dx.doi.org/10.1016/j.enconman.2011.12.020
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Universiti Teknologi Malaysia
id my.utm.46951
record_format eprints
spelling my.utm.469512017-09-27T04:17:11Z http://eprints.utm.my/id/eprint/46951/ Exergetic and economic evaluation of the effect of HRSG configurations on the performance of combined cycle power plants Mansouri, Mohammad Tajik Ahmadi, Pouria Kaviri, Abdolsaeid Ganjeh Mohd. Jaafar, Mohammad Nazri QC Physics In the present research study, the effect of HRSG pressure levels on exergy efficiency of combined cycle power plants is investigated. Hence, three types of gas turbine combined cycles, with the same gas turbine as a topping cycle are evaluated. A double pressure, and two triple pressure HRSGs (with and without reheat) are modeled. The results show how an increase in the number of pressure levels of the HRSG affect the exergy losses due to heat transfer in the HRSG and the exhaust of flue gas to the stack. Moreover, the results show that an increase in the number of pressure levels affects the exergy destruction rate in HRSG, and as a result, it causes a tangible increase in exergy efficiency of the whole cycle. The results from thermodynamic analysis show that the losses due to heat transfer in the HRSG and the exhaust of flue gas to the stack in a triple pressure reheat combined cycle are less than the other cases. From the economic analysis, it is found that increasing the number of pressure levels of steam generation leads to an increase for the total and specific investment cost of the plant for about 6% and 4% respectively. The net present value (NPV) of the plant increases for about 7% for triple pressure reheat compared to with the double pressure CCPP. Therefore, the results of economic analysis show that it is economically justifiable to increase the number of pressure levels of steam generation in HRSG. 2012 Article PeerReviewed Mansouri, Mohammad Tajik and Ahmadi, Pouria and Kaviri, Abdolsaeid Ganjeh and Mohd. Jaafar, Mohammad Nazri (2012) Exergetic and economic evaluation of the effect of HRSG configurations on the performance of combined cycle power plants. Energy Conversion And Management, 58 . pp. 47-58. ISSN 0196-8904 http://dx.doi.org/10.1016/j.enconman.2011.12.020
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic QC Physics
spellingShingle QC Physics
Mansouri, Mohammad Tajik
Ahmadi, Pouria
Kaviri, Abdolsaeid Ganjeh
Mohd. Jaafar, Mohammad Nazri
Exergetic and economic evaluation of the effect of HRSG configurations on the performance of combined cycle power plants
description In the present research study, the effect of HRSG pressure levels on exergy efficiency of combined cycle power plants is investigated. Hence, three types of gas turbine combined cycles, with the same gas turbine as a topping cycle are evaluated. A double pressure, and two triple pressure HRSGs (with and without reheat) are modeled. The results show how an increase in the number of pressure levels of the HRSG affect the exergy losses due to heat transfer in the HRSG and the exhaust of flue gas to the stack. Moreover, the results show that an increase in the number of pressure levels affects the exergy destruction rate in HRSG, and as a result, it causes a tangible increase in exergy efficiency of the whole cycle. The results from thermodynamic analysis show that the losses due to heat transfer in the HRSG and the exhaust of flue gas to the stack in a triple pressure reheat combined cycle are less than the other cases. From the economic analysis, it is found that increasing the number of pressure levels of steam generation leads to an increase for the total and specific investment cost of the plant for about 6% and 4% respectively. The net present value (NPV) of the plant increases for about 7% for triple pressure reheat compared to with the double pressure CCPP. Therefore, the results of economic analysis show that it is economically justifiable to increase the number of pressure levels of steam generation in HRSG.
format Article
author Mansouri, Mohammad Tajik
Ahmadi, Pouria
Kaviri, Abdolsaeid Ganjeh
Mohd. Jaafar, Mohammad Nazri
author_facet Mansouri, Mohammad Tajik
Ahmadi, Pouria
Kaviri, Abdolsaeid Ganjeh
Mohd. Jaafar, Mohammad Nazri
author_sort Mansouri, Mohammad Tajik
title Exergetic and economic evaluation of the effect of HRSG configurations on the performance of combined cycle power plants
title_short Exergetic and economic evaluation of the effect of HRSG configurations on the performance of combined cycle power plants
title_full Exergetic and economic evaluation of the effect of HRSG configurations on the performance of combined cycle power plants
title_fullStr Exergetic and economic evaluation of the effect of HRSG configurations on the performance of combined cycle power plants
title_full_unstemmed Exergetic and economic evaluation of the effect of HRSG configurations on the performance of combined cycle power plants
title_sort exergetic and economic evaluation of the effect of hrsg configurations on the performance of combined cycle power plants
publishDate 2012
url http://eprints.utm.my/id/eprint/46951/
http://dx.doi.org/10.1016/j.enconman.2011.12.020
_version_ 1643652190153211904