Comparison between Regenerative Feed Water Heating and Regenerative Fuel Drying in Biomass Power Plant

Regeneration is a widely implemented method in a thermal power plant for increasing the power plant efficiency. In a typical regenerative method, extracted steam from a steam turbine is mixed with cooling water in an open feed water heater to increase feed water temperature before feed water is heat...

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Autor principal:	Somchart Chantasiriwan
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/bdbc55603554408c8ff1857be36d2cf3
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spelling	oai:doaj.org-article:bdbc55603554408c8ff1857be36d2cf32021-11-15T21:48:24ZComparison between Regenerative Feed Water Heating and Regenerative Fuel Drying in Biomass Power Plant10.3303/CET21880692283-9216https://doaj.org/article/bdbc55603554408c8ff1857be36d2cf32021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11862https://doaj.org/toc/2283-9216Regeneration is a widely implemented method in a thermal power plant for increasing the power plant efficiency. In a typical regenerative method, extracted steam from a steam turbine is mixed with cooling water in an open feed water heater to increase feed water temperature before feed water is heated, and becomes superheated steam. An alternative method of regeneration is possible for a biomass power plant that consumes the fuel with high moisture content. In this method, extracted steam is used to decrease the fuel moisture content before the fuel is combusted. The main objective of this paper is to compare both methods of regeneration. The reference power plant consists of a biomass boiler, a steam turbine, a condenser, and an open feed water heater. The boiler consumes 5.2 kg/s of fuel with a moisture content of 52 %, and generates superheated steam with a pressure of 4.5 MPa. Steam is extracted from the steam turbine at a pressure of 1.2 MPa, and supplied to the open feed water heater. The condenser pressure is 10 kPa. Turbine isentropic efficiency is 85 %, and pump isentropic efficiency is 70 %. The power output of the reference power plant is 10.0 MW. Two methods of increasing the power output are compared. In the first method, another open feed water heater is added to the reference power plant. The pressure of extracted steam supplied to this open feed water heater is 0.2 MPa. In the second method, a steam dryer is added to the reference power plant. The pressure of extracted steam supplied to the steam dryer is also 0.2 MPa. Simulation results indicate the first method increases the power output up to 3 %, whereas the second method increases the power output up to 7 %.Somchart ChantasiriwanAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Somchart Chantasiriwan Comparison between Regenerative Feed Water Heating and Regenerative Fuel Drying in Biomass Power Plant
description	Regeneration is a widely implemented method in a thermal power plant for increasing the power plant efficiency. In a typical regenerative method, extracted steam from a steam turbine is mixed with cooling water in an open feed water heater to increase feed water temperature before feed water is heated, and becomes superheated steam. An alternative method of regeneration is possible for a biomass power plant that consumes the fuel with high moisture content. In this method, extracted steam is used to decrease the fuel moisture content before the fuel is combusted. The main objective of this paper is to compare both methods of regeneration. The reference power plant consists of a biomass boiler, a steam turbine, a condenser, and an open feed water heater. The boiler consumes 5.2 kg/s of fuel with a moisture content of 52 %, and generates superheated steam with a pressure of 4.5 MPa. Steam is extracted from the steam turbine at a pressure of 1.2 MPa, and supplied to the open feed water heater. The condenser pressure is 10 kPa. Turbine isentropic efficiency is 85 %, and pump isentropic efficiency is 70 %. The power output of the reference power plant is 10.0 MW. Two methods of increasing the power output are compared. In the first method, another open feed water heater is added to the reference power plant. The pressure of extracted steam supplied to this open feed water heater is 0.2 MPa. In the second method, a steam dryer is added to the reference power plant. The pressure of extracted steam supplied to the steam dryer is also 0.2 MPa. Simulation results indicate the first method increases the power output up to 3 %, whereas the second method increases the power output up to 7 %.
format	article
author	Somchart Chantasiriwan
author_facet	Somchart Chantasiriwan
author_sort	Somchart Chantasiriwan
title	Comparison between Regenerative Feed Water Heating and Regenerative Fuel Drying in Biomass Power Plant
title_short	Comparison between Regenerative Feed Water Heating and Regenerative Fuel Drying in Biomass Power Plant
title_full	Comparison between Regenerative Feed Water Heating and Regenerative Fuel Drying in Biomass Power Plant
title_fullStr	Comparison between Regenerative Feed Water Heating and Regenerative Fuel Drying in Biomass Power Plant
title_full_unstemmed	Comparison between Regenerative Feed Water Heating and Regenerative Fuel Drying in Biomass Power Plant
title_sort	comparison between regenerative feed water heating and regenerative fuel drying in biomass power plant
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/bdbc55603554408c8ff1857be36d2cf3
work_keys_str_mv	AT somchartchantasiriwan comparisonbetweenregenerativefeedwaterheatingandregenerativefueldryinginbiomasspowerplant
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Comparison between Regenerative Feed Water Heating and Regenerative Fuel Drying in Biomass Power Plant

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