Energy efficiency and CO2 emission assessment of Bio-SNG production - A methodology comparison

T. Kohl, T. Laukkanen, M. Tuomaala, T. Niskanen, S. Siitonen, M. P. Järvinen, P. Ahtila

    Research output: Contribution to conferencePaperScientificpeer-review

    Abstract

    Fossil fuels applied in energy generation-, transport- and refinery processes can be replaced by biofuels. This offers plenty processing options for biomass resources such as thermo-chemical. For process evaluation different criteria is applied, usually including costs, energy efficiency and CO2 emission. However, comparative evaluation of the energy efficiency is difficult since no general standard method exists. The objective of this paper is to compare different methods of energy efficiency and CO2 emission assessment in order to systematically analyse their differences qualitatively and quantitatively. The methods include a general engineering approach, CO2 assessment according to the EU's Renewable Energy Sources Directive, primary energy efficiency analysis (incl. CO2 assessment) and exergy analysis. In this paper the methods are compared, based on a case study of Bio-SNG generation from woody biomass (simulated with Aspen+). The work shows the differences of the methods when applied to the same process allowing critical discussions of the methods applicability and providing a starting point for the future work on developing novel energy efficiency and CO2 emission assessment methods.

    Original languageEnglish
    Publication statusPublished - 1 Jan 2013
    MoE publication typeNot Eligible
    EventInternational Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems - Guilin, China
    Duration: 16 Jul 201319 Jul 2013
    Conference number: 26

    Conference

    ConferenceInternational Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
    Abbreviated titleECOS
    CountryChina
    CityGuilin
    Period16/07/201319/07/2013

    Keywords

    • Bio-SNG (synthetic natural gas)
    • Energy efficiency
    • Methodology assessment

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