These conclusions are confirmed by field tests with a slightly
modified Capstone C30 conducted by Prussi et al. [31]. In this
micro gas turbine, straight vegetable oil was injected by air-assist
atomizers at three different temperatures. CO emissions decreased
with higher preheating temperatures, especially at low load conditions,
and were nearly the same as for diesel in case of maximum
load. Considering the strong influence on the engine performance,
viscosity was identified as the most important parameter to be
controlled. Comparison of the data obtained by Prussi et al. with
other studies will only be possible to a limited extent, however,
because the fuel temperatures are not reported explicitly