Life Cycle Assessment of Miscanthus as a Fuel Alternative in District Heat Production

Ranjan Parajuli, Tommy Dalgaard, Thu Lan Thi Nguyen, Karl Sperling

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearch

Abstract

This study assesses the environmental performance of district heat production based on Miscanthus as a fuel input and compares it with Natural Gas (NG). As a baseline scenario, we assume that the process of energy conversion from Miscanthus to heat takes place in a Combined Heat and Power (CHP) plant. Alternatively, we have simulated the combustion process of Miscanthus in a boiler, where only heat is produced. For NG similar scenarios are examined. Life Cycle Assessment (LCA) in relation to 1 MJ of heat production with Miscanthus fired in a CHP would lead to a Global Warming Potential (GWP) of -0.071 kgCO2-eq, a Non-Renewable Energy (NRE) use of -0.767 MJ primary, and 0.09 m2Land Use (LU). In contrast, production of 1 MJ of heat with Miscanthus fired in a boiler would lead to a GWP of 0.005 kg CO2-eq, NRE use 0.172 MJ primary, and land use 0.063 m2-a. Miscanthus fired in a CHP performs better than in the boilerfrom the stand point of GWP and savings in fossil fuels, but leads to a higher LU.A comparison between Miscanthus and NG shows that the former in spite of possessing advantage in reducing GWP and NRE use,additional land required for it could be seen as a disadvantage. Key words: LCA, Miscanthus, Natural gas, District heat, CHP, Boiler, Global Warming Potential, Non-Renewable Energy Use, Land Use.
Original languageEnglish
Title of host publicationEuropean Biomass Conference and Exhibition Proceedings
Number of pages13
PublisherETA-Renewable Energies
Publication date2013
Pages388 - 400
ISBN (Electronic)978-88-89407-53-0
DOIs
Publication statusPublished - 2013
Event21st European Biomass Conference and Exhibition - Copenhagen, Denmark
Duration: 3 Jun 20137 Jun 2013

Conference

Conference21st European Biomass Conference and Exhibition
Country/TerritoryDenmark
CityCopenhagen
Period03/06/201307/06/2013
SeriesEuropean Biomass Conference and Exhibition Proceedings
ISSN2282-5819

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