A Comparison of Different Approaches for Assessing Energy Outputs of Combined Heat and Power Geothermal Plants
In this paper, we assess using two alternative allocation schemes, namely exergy and primary energy saving (PES) to compare products generated in different combined heat and power (CHP) geothermal systems. In particular, the adequacy and feasibility of the schemes recommended for allocation are demo...
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2021
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ftdoajarticles:oai:doaj.org/article:f5be41040dca4553ab2bad12b28fdcb0 2023-05-15T16:50:58+02:00 A Comparison of Different Approaches for Assessing Energy Outputs of Combined Heat and Power Geothermal Plants Daniele Fiaschi Giampaolo Manfrida Barbara Mendecka Lorenzo Tosti Maria Laura Parisi 2021-04-01T00:00:00Z https://doi.org/10.3390/su13084527 https://doaj.org/article/f5be41040dca4553ab2bad12b28fdcb0 EN eng MDPI AG https://www.mdpi.com/2071-1050/13/8/4527 https://doaj.org/toc/2071-1050 doi:10.3390/su13084527 2071-1050 https://doaj.org/article/f5be41040dca4553ab2bad12b28fdcb0 Sustainability, Vol 13, Iss 4527, p 4527 (2021) allocation combined heat and power (CHP) geothermal energy exergy life cycle assessment (LCA) primary energy savings (PESs) Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 article 2021 ftdoajarticles https://doi.org/10.3390/su13084527 2022-12-31T16:34:24Z In this paper, we assess using two alternative allocation schemes, namely exergy and primary energy saving (PES) to compare products generated in different combined heat and power (CHP) geothermal systems. In particular, the adequacy and feasibility of the schemes recommended for allocation are demonstrated by their application to three relevant and significantly different case studies of geothermal CHPs, i.e., (1) Chiusdino in Italy, (2) Altheim in Austria, and (3) Hellisheidi in Iceland. The results showed that, given the generally low temperature level of the cogenerated heat (80–100 °C, usually exploited in district heating), the use of exergy allocation largely marginalizes the importance of the heat byproduct, thus, becoming almost equivalent to electricity for the Chiusdino and Hellisheidi power plants. Therefore, the PES scheme is found to be the more appropriate allocation scheme. Additionally, the exergy scheme is mandatory for allocating power plants’ environmental impacts at a component level in CHP systems. The main drawback of the PES scheme is its country dependency due to the different fuels used, but reasonable and representative values can be achieved based on average EU heat and power generation efficiencies. Article in Journal/Newspaper Iceland Directory of Open Access Journals: DOAJ Articles Sustainability 13 8 4527 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
allocation combined heat and power (CHP) geothermal energy exergy life cycle assessment (LCA) primary energy savings (PESs) Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
spellingShingle |
allocation combined heat and power (CHP) geothermal energy exergy life cycle assessment (LCA) primary energy savings (PESs) Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Daniele Fiaschi Giampaolo Manfrida Barbara Mendecka Lorenzo Tosti Maria Laura Parisi A Comparison of Different Approaches for Assessing Energy Outputs of Combined Heat and Power Geothermal Plants |
topic_facet |
allocation combined heat and power (CHP) geothermal energy exergy life cycle assessment (LCA) primary energy savings (PESs) Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
description |
In this paper, we assess using two alternative allocation schemes, namely exergy and primary energy saving (PES) to compare products generated in different combined heat and power (CHP) geothermal systems. In particular, the adequacy and feasibility of the schemes recommended for allocation are demonstrated by their application to three relevant and significantly different case studies of geothermal CHPs, i.e., (1) Chiusdino in Italy, (2) Altheim in Austria, and (3) Hellisheidi in Iceland. The results showed that, given the generally low temperature level of the cogenerated heat (80–100 °C, usually exploited in district heating), the use of exergy allocation largely marginalizes the importance of the heat byproduct, thus, becoming almost equivalent to electricity for the Chiusdino and Hellisheidi power plants. Therefore, the PES scheme is found to be the more appropriate allocation scheme. Additionally, the exergy scheme is mandatory for allocating power plants’ environmental impacts at a component level in CHP systems. The main drawback of the PES scheme is its country dependency due to the different fuels used, but reasonable and representative values can be achieved based on average EU heat and power generation efficiencies. |
format |
Article in Journal/Newspaper |
author |
Daniele Fiaschi Giampaolo Manfrida Barbara Mendecka Lorenzo Tosti Maria Laura Parisi |
author_facet |
Daniele Fiaschi Giampaolo Manfrida Barbara Mendecka Lorenzo Tosti Maria Laura Parisi |
author_sort |
Daniele Fiaschi |
title |
A Comparison of Different Approaches for Assessing Energy Outputs of Combined Heat and Power Geothermal Plants |
title_short |
A Comparison of Different Approaches for Assessing Energy Outputs of Combined Heat and Power Geothermal Plants |
title_full |
A Comparison of Different Approaches for Assessing Energy Outputs of Combined Heat and Power Geothermal Plants |
title_fullStr |
A Comparison of Different Approaches for Assessing Energy Outputs of Combined Heat and Power Geothermal Plants |
title_full_unstemmed |
A Comparison of Different Approaches for Assessing Energy Outputs of Combined Heat and Power Geothermal Plants |
title_sort |
comparison of different approaches for assessing energy outputs of combined heat and power geothermal plants |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/su13084527 https://doaj.org/article/f5be41040dca4553ab2bad12b28fdcb0 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Sustainability, Vol 13, Iss 4527, p 4527 (2021) |
op_relation |
https://www.mdpi.com/2071-1050/13/8/4527 https://doaj.org/toc/2071-1050 doi:10.3390/su13084527 2071-1050 https://doaj.org/article/f5be41040dca4553ab2bad12b28fdcb0 |
op_doi |
https://doi.org/10.3390/su13084527 |
container_title |
Sustainability |
container_volume |
13 |
container_issue |
8 |
container_start_page |
4527 |
_version_ |
1766041084606021632 |