Assessing Future Energy and Transport Systems: The Case of Fuel Cells

摘要: Preamble. This series of two papers which is based on a PhD thesis (Pehnt 2002a) discusses the assessment fuel cells as future energy and transport systems from perspectives. Part 1 presents methodological issues associated with character need forecasting process steps uses production an SOFC stack illustration. 2 results LCAs in stationary mobile applications methodology discussed before. ergy carrier for (renewable or fossil) dominates impact reduction. With increasing efficiency improving emission performance conventional systems, compe- tition regarding all categories both sta- tionary getting even stronger. The cell system low overall signifi- cance applications, whereas automotive appli- cations, power train required materials leads to increased impacts compared internal com- bustion engines thus reduces achievable environmental Recommendations Perspectives. rapid technological economic development will bring further advances converters. Therefore, at such early stage market can only be con- sidered preliminary. It essential requirement accompany ongoing research iterative LCAs, stantly pointing hot spots bottlenecks. Abstract Goal, Scope Background. Assessing trans- port major importance providing timely infor- mation decision makers. In discussion technology op- tions, are often portrayed attractive options plants applications. However, when analysing these LCA analyst confronted methodologi- cal problems, particularly data gaps anticipation developments. aims framework assessing fu- ture (Part 1) applies this application areas 2). Methods. To allow sys- tems tools like, amongst others, cost estimation methods simulation investigated respect applicability 1). manufacturing used illus- tration procedure. 2, detailed trains carried out in- cluding (hydrogen, methanol, gasoline, diesel natural gas) converter production. compare it peting technologies, combustion (automotive applications) reciprocating engines, gas turbines bined cycle (stationary analysed well. Results Discussion. Principally, suitable assessment. selection best method depends different factors ressources, quality flexibility. particular, time horizon investigation determines tool may applied. Environmentally relevant proc- ess exhibiting significant dependency shall always using independent ensure stability results. 2) underline that principally, offer advantages typi- cally dominated by pollutant emissions, acidification eutrophication, global warming primary demand, situation set parameters driving economy ratio applica- tions thermal/total efficiencies For latter categories, choice en-