Paper presented at the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.
Water injection into gas turbines is subject of investigations
since decades, due to a high power and efficiency augmentation
potential compared to the simple gas turbine cycle. Based on
former research at ambient conditions, some technologies have
already been realized, e.g. inlet fogging. Further applications of
water injection at higher temperature and pressure levels are
limited, because of few experimental data. In order to gain
fundamental understanding at these boundary conditions, a
novel test facility for droplet evaporation investigations has
been built up at the University of Duisburg-Essen. The
resulting spray patterns are recorded by a laser based measuring
technology, Phase Doppler Particle Analyzer (PDPA).
Part I of the paper treats the experimental setup of the test
facility; in particular the laser based measuring technology, as
well as the measurement results of the spray pattern produced
from a nozzle at high pressure and temperature levels. The
focus of the investigations is on the droplet evaporation process
in dependence on parameter variation of the environmental
conditions.
