THE EFFECT OF H-2 PURITY ON THE COMBUSTION, PERFORMANCE, EMISSIONS, AND ENERGY COSTS IN AN SPARK IGNITION ENGINE

Gürbüz H.

THERMAL SCIENCE, vol.24, pp.37-49, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 24
  • Publication Date: 2020
  • Doi Number: 10.2298/tsci180705315g
  • Journal Name: THERMAL SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Directory of Open Access Journals
  • Page Numbers: pp.37-49
  • Keywords: spark ignition engine, H-2 purity, combustion, engine performance, NOx emission, energy costs, HYDROGEN-PRODUCTION
  • Süleyman Demirel University Affiliated: Yes

Abstract

This paper aims to examine the effect of hydrogen purity on the combustion, performance, NOx emissions and energy costs in a spark ignition engine. In accordance with this purpose, two commercial hydrogen gases of different purity (i.e. 99.998% and 99.995%), were used as fuel in an spark ignition engine. The engine was operated under a lean mixture (phi = 0.6) and wide-open throttle conditions at 1400, 1600, and 1800 rpm engine speeds. It was found that high purity hydrogen improves engine performance parameters (i. e. indicated power, torque, thermal efficiency, and specific fuel consumption) in the range of 2.4-1.9% depending on engine speed. The combustion duration and the cyclic variations were also decrease when the engine is operated with high purity hydrogen. However, NOx emissions increase depending on engine speed in the range of 3.4-2.9% when high purity hydrogen is used as a fuel. In addition, energy costs with high purity H-2 increase in the range of 5.9-6.5% depending on engine speed.