Julien Melis

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Waste heat recovery (WHR) in exhaust gas flow of automotive engines has proved to be a useful path to increase the overall efficiency of internal combustion engines (ICE). Recovery potentials of up to 7% are shown in several works in the literature. However, most of them are theoretical estimations. Some present results from prototypes fed by steady flows(More)
  • J. Melis
  • Conference Record of the 1992 IEEE Industry…
  • 1992
The author presents a simple method for designing ballast curves for high pressure sodium (HPS) lamps operating at a frequency >20 kHz. Since the HPS lamp is a complicated plasma device, an approximation can be useful. An approximate model based on a resistive substitution of HPS lamps operating at a high frequency is introduced and used to transform the(More)
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