Open access
Datum
2020-04-11Typ
- Journal Article
Abstract
Decentralized power generation by combined heat and power plants becomes increasingly popular as a measure to advance the energy transition. In this context, a substantial advantage of small combined heat and power plants is based on the relatively low pollutant emissions. However, a large proportion of the pollutant emissions is produced during a cold-start. This fact is not reflected in governmental and institutional emission guidelines, as these strongly focus on the emission levels under steady-state conditions. This study analyzes the spark advance, the reference air/fuel ratio and an electrically heated catalyst in terms of their potential to reduce the cold-start emissions of a micro combined heat and power plant which uses a natural gas fueled reciprocating internal combustion engine as prime mover and a three-way catalytic converter as aftertreatment system. Based on these measures, control approaches were developed that account for the specific operating conditions of the class of small combined heat and power plants, e.g., full-load operation and flexible, demand-driven runtimes. The experimental data demonstrates that even solutions with marginal adaptation/integration effort can reduce cold-start emissions to a great extent. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000409606Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
EnergiesBand
Seiten / Artikelnummer
Verlag
MDPIThema
micro combined heat and power; cold-start emissions; natural gas; internal combustion engine; spark advance; air/fuel ratio; electrically heated catalystOrganisationseinheit
08840 - Onder, Christopher (Tit.-Prof.)
03611 - Boulouchos, Konstantinos (emeritus) / Boulouchos, Konstantinos (emeritus)