自動車のエクセルギー解析

摘要

世界の温室効果ガス排出量が増加し続ける中で，日本rn政府は1990年比25%の排出量削減を2020年頃までのrn中期目標として表明した．そのための計画は見えてこなrnいが，地球温暖化防止と環境保全のための化石燃料起源rnのCO_2削減には自動車も貢献しなければならない．%This paper presents an exergy analysis based on the second law of thermodynamics to evaluate its usefulness in design, analysis and performance improvement for power systems of vehicles. The exergy analysis can be used to know how improving the performance of the process through exergy efficiencies affects the environmental impact and sustainable development. Both exergy and energy efficiencies for various power systems such as a compression ignition engine using biofuels, naturally aspirated gasoline and hydrogen fuelled spark ignition internal combustion engines and PEM fuel cells, are also illustrated for comparison purposes, based on some literature data.