Modeling the emissions of a dual fuel engine coupled with a biomass gasifier—supplementing the Wiebe function

Abstract

There is a growing market demand for small-scale biomass gasifiers that is driven by the economic incentives and the legislative framework. Small-scale gasifiers produce a gaseous fuel, commonly referred to as producer gas, with relatively low heating value. Thus, the most common energy conversion systems that are coupled with small-scale gasifiers are internal combustion engines. In order to increase the electrical efficiency, the operators choose dual fuel engines and mix the producer gas with diesel. The Wiebe function has been a valuable tool for assessing the efficiency of dual fuel internal combustion engines. This study introduces a thermodynamic model that works in parallel with the Wiebe function and calculates the emissions of the engines. This “vis-à-vis” approach takes into consideration the actual conditions inside the cylinders—as they are returned by the Wiebe function—and calculates the final thermodynamic equilibrium of the flue gases mixture. This approach aims to enhance the operation of the dual fuel internal combustion engines by identifying the optimal operating conditions and—at the same time—advance pollution control and minimize the environmental impact.

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Correspondence to Stergios Vakalis.

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Vakalis, S., Caligiuri, C., Moustakas, K. et al. Modeling the emissions of a dual fuel engine coupled with a biomass gasifier—supplementing the Wiebe function. Environ Sci Pollut Res 25, 35866–35873 (2018). https://doi.org/10.1007/s11356-018-1647-5

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Keywords

  • Gasification
  • Thermodynamics
  • Internal combustion engine
  • Sabathé
  • Nitrogen oxides