Energetic and Exergetic Performances of a Retrofitted, Large-Scale, Biomass-Fired CHP Coupled to a Steam-Explosion Biomass Upgrading Plant, a Biorefinery Process and a High-Temperature Heat Network

This paper aims at assessing the impact of retrofitting an existing, 730 MW<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mi>e</mi></msub></semantics><...

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Autores principales:	Roeland De Meulenaere, Tim Maertens, Ale Sikkema, Rune Brusletto, Tanja Barth, Julien Blondeau
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	biomass CHP retrofit exergy steam-explosion Technology T
Acceso en línea:	https://doaj.org/article/f321b3669de94d33bbb14dee0a1110aa
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id	oai:doaj.org-article:f321b3669de94d33bbb14dee0a1110aa
record_format	dspace
institution	DOAJ
collection	DOAJ
language	EN
topic	biomass CHP retrofit exergy steam-explosion Technology T
spellingShingle	biomass CHP retrofit exergy steam-explosion Technology T Roeland De Meulenaere Tim Maertens Ale Sikkema Rune Brusletto Tanja Barth Julien Blondeau Energetic and Exergetic Performances of a Retrofitted, Large-Scale, Biomass-Fired CHP Coupled to a Steam-Explosion Biomass Upgrading Plant, a Biorefinery Process and a High-Temperature Heat Network
description	This paper aims at assessing the impact of retrofitting an existing, 730 MW<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mi>e</mi></msub></semantics></math></inline-formula>, coal-fired power plant into a biomass-fired combined heat and power (CHP) plant on its energetic and exergetic performances. A comprehensive thermodynamic model of the power plant was developed and validated against field data, resulting in less than <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>1</mn><mo>%</mo></mrow></semantics></math></inline-formula> deviation between the model and the measurements for the main process parameters. The validated model was then used to predict the behaviour of the biomass CHP after retrofitting. The modelled CHP unit is coupled to a steam-explosion biomass upgrading plant, a biorefinery process, and a high-temperature heat network. 13 scenarios were studied. At constant boiler load, delivering heat to the considered heat clients can increase the total energy efficiency of the plant from <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>44</mn><mo>%</mo></mrow></semantics></math></inline-formula> (electricity only) to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>64</mn><mo>%</mo></mrow></semantics></math></inline-formula>, while the total exergy efficiency decreases from <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>39</mn><mo>%</mo></mrow></semantics></math></inline-formula> to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>35</mn><mo>%</mo></mrow></semantics></math></inline-formula>. A total energy efficiency of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>67</mn><mo>%</mo></mrow></semantics></math></inline-formula> could be reached by lowering the network temperature from <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>120</mn><msup><mspace width="3.33333pt"></mspace><mo>∘</mo></msup></mrow></semantics></math></inline-formula>C to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>70</mn><msup><mspace width="3.33333pt"></mspace><mo>∘</mo></msup></mrow></semantics></math></inline-formula>C. Identifying the needed heat clients could, however, represent a limiting factor to reach such high efficiencies. For a constant power demand, increasing the boiler load from 80 to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>100</mn><mo>%</mo></mrow></semantics></math></inline-formula> in order to provide additional heat makes the total energy efficiency increase from <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>43</mn><mo>%</mo></mrow></semantics></math></inline-formula> to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>55</mn><mo>%</mo></mrow></semantics></math></inline-formula>, while the total exergy efficiency decreases from <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>39</mn><mo>%</mo></mrow></semantics></math></inline-formula> to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>36</mn><mo>%</mo></mrow></semantics></math></inline-formula>.
format	article
author	Roeland De Meulenaere Tim Maertens Ale Sikkema Rune Brusletto Tanja Barth Julien Blondeau
author_facet	Roeland De Meulenaere Tim Maertens Ale Sikkema Rune Brusletto Tanja Barth Julien Blondeau
author_sort	Roeland De Meulenaere
title	Energetic and Exergetic Performances of a Retrofitted, Large-Scale, Biomass-Fired CHP Coupled to a Steam-Explosion Biomass Upgrading Plant, a Biorefinery Process and a High-Temperature Heat Network
title_short	Energetic and Exergetic Performances of a Retrofitted, Large-Scale, Biomass-Fired CHP Coupled to a Steam-Explosion Biomass Upgrading Plant, a Biorefinery Process and a High-Temperature Heat Network
title_full	Energetic and Exergetic Performances of a Retrofitted, Large-Scale, Biomass-Fired CHP Coupled to a Steam-Explosion Biomass Upgrading Plant, a Biorefinery Process and a High-Temperature Heat Network
title_fullStr	Energetic and Exergetic Performances of a Retrofitted, Large-Scale, Biomass-Fired CHP Coupled to a Steam-Explosion Biomass Upgrading Plant, a Biorefinery Process and a High-Temperature Heat Network
title_full_unstemmed	Energetic and Exergetic Performances of a Retrofitted, Large-Scale, Biomass-Fired CHP Coupled to a Steam-Explosion Biomass Upgrading Plant, a Biorefinery Process and a High-Temperature Heat Network
title_sort	energetic and exergetic performances of a retrofitted, large-scale, biomass-fired chp coupled to a steam-explosion biomass upgrading plant, a biorefinery process and a high-temperature heat network
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f321b3669de94d33bbb14dee0a1110aa
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spelling	oai:doaj.org-article:f321b3669de94d33bbb14dee0a1110aa2021-11-25T17:28:15ZEnergetic and Exergetic Performances of a Retrofitted, Large-Scale, Biomass-Fired CHP Coupled to a Steam-Explosion Biomass Upgrading Plant, a Biorefinery Process and a High-Temperature Heat Network10.3390/en142277201996-1073https://doaj.org/article/f321b3669de94d33bbb14dee0a1110aa2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7720https://doaj.org/toc/1996-1073This paper aims at assessing the impact of retrofitting an existing, 730 MW<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mi>e</mi></msub></semantics></math></inline-formula>, coal-fired power plant into a biomass-fired combined heat and power (CHP) plant on its energetic and exergetic performances. A comprehensive thermodynamic model of the power plant was developed and validated against field data, resulting in less than <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>1</mn><mo>%</mo></mrow></semantics></math></inline-formula> deviation between the model and the measurements for the main process parameters. The validated model was then used to predict the behaviour of the biomass CHP after retrofitting. The modelled CHP unit is coupled to a steam-explosion biomass upgrading plant, a biorefinery process, and a high-temperature heat network. 13 scenarios were studied. At constant boiler load, delivering heat to the considered heat clients can increase the total energy efficiency of the plant from <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>44</mn><mo>%</mo></mrow></semantics></math></inline-formula> (electricity only) to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>64</mn><mo>%</mo></mrow></semantics></math></inline-formula>, while the total exergy efficiency decreases from <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>39</mn><mo>%</mo></mrow></semantics></math></inline-formula> to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>35</mn><mo>%</mo></mrow></semantics></math></inline-formula>. A total energy efficiency of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>67</mn><mo>%</mo></mrow></semantics></math></inline-formula> could be reached by lowering the network temperature from <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>120</mn><msup><mspace width="3.33333pt"></mspace><mo>∘</mo></msup></mrow></semantics></math></inline-formula>C to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>70</mn><msup><mspace width="3.33333pt"></mspace><mo>∘</mo></msup></mrow></semantics></math></inline-formula>C. Identifying the needed heat clients could, however, represent a limiting factor to reach such high efficiencies. For a constant power demand, increasing the boiler load from 80 to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>100</mn><mo>%</mo></mrow></semantics></math></inline-formula> in order to provide additional heat makes the total energy efficiency increase from <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>43</mn><mo>%</mo></mrow></semantics></math></inline-formula> to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>55</mn><mo>%</mo></mrow></semantics></math></inline-formula>, while the total exergy efficiency decreases from <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>39</mn><mo>%</mo></mrow></semantics></math></inline-formula> to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>36</mn><mo>%</mo></mrow></semantics></math></inline-formula>.Roeland De MeulenaereTim MaertensAle SikkemaRune BruslettoTanja BarthJulien BlondeauMDPI AGarticlebiomassCHPretrofitexergysteam-explosionTechnologyTENEnergies, Vol 14, Iss 7720, p 7720 (2021)

Energetic and Exergetic Performances of a Retrofitted, Large-Scale, Biomass-Fired CHP Coupled to a Steam-Explosion Biomass Upgrading Plant, a Biorefinery Process and a High-Temperature Heat Network

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