https://bura.brunel.ac.uk/bitstream/2438/16235/3/Fulltext.pdf

Surface water filtration using granular media and membranes: A review

Heat transfers in an automotive turbocharger comprise significant energy flows, but are rarely measured or accounted for in any turbocharger performance assessment. Existing measurements suggest that the difference in turbine efficiency calculated in the conventional way, by means of the fluid temperature change, under adiabatic conditions differs considerably from the usual diabatic test conditions, particularly at low turbine pressure ratio. In the work described in this paper, three commercial turbochargers were extensively instrumented with thermocouples on all accessible external and internal surfaces in order to make comprehensive temperature surveys. The turbochargers were run at ranges of turbine inlet temperature and external ventilation. Adiabatic tests were also carried out to serve as a reference condition. Based on the temperature measurements, the internal heat fluxes from the turbine gas to the turbocharger structure and from there to the lubricating oil and the compressor, and the external heat fluxes to the environment were calculated. A one-dimensional heat transfer network model of the turbocharger was demonstrated to be able to simulate the heat fluxes to good accuracy, and the heat transfer coefficients required were ultimately found to be mostly independent of the turbochargers tested.

The Analysis of Heat Transfer in Automotive Turbochargers

https://escholarship.org/content/qt7bz829ph/qt7bz829ph.pdf?t=qsoiux

Brackish water desalination using reverse osmosis and capacitive deionization at the water-energy nexus.

Heat transfer analysis in a turbocharger turbine: An experimental and computational evaluation

We investigate the different factors affecting the performance of an OWC chamber. We carry out a comprehensive campaign of physical model tests (387 in total). The turbine damping is the main factor, taking precedence over the wave conditions. The wave period is far more important than the wave height. The tidal level plays a significant role under certain wave conditions.

Performance of OWC wave energy converters: influence of turbine damping and tidal variability

Experimental investigation and extended simulation of turbocharger non-adiabatic performance

Turbocharging is nowadays the most commonly used method of engine supercharging. One of the important factors affecting the turbocharger performance is the heat transfer inside the turbocharger and from the turbocharger to the ambient. Heat transfer takes place due to the high temperature gradient between the turbine and the other components of the turbocharger as well as between the turbine and the ambient. This heat transfer causes underestimation of the measured compressor efficiency and overestimation of the turbine efficiency. This results in an inaccurate estimation of the compressor power and the turbine power.

S. Shaaban

Papers

Experimental investigation and extended simulation of turbocharger non-adiabatic performance

Analysis of Turbocharger Non-Adiabatic Performance

Optimization of blade pitch angle of an axial turbine used for wave energy conversion

Effect of duct geometry on Wells turbine performance

Numerical investigation and optimization of the solar chimney collector performance and power density