A review of grooved dynamic gas bearings
This paper offers an extensive review of publications dealing with the modeling, the design,
and the experimental investigation of grooved dynamic gas-lubricated bearings. Recent …
and the experimental investigation of grooved dynamic gas-lubricated bearings. Recent …
Multi-objective, multi-period optimization of district energy systems: IV–A case study
A multi-objective, multi-period model for optimizing the design and operating strategy of
district energy systems is proposed by authors [1]. In the developed model the process and …
district energy systems is proposed by authors [1]. In the developed model the process and …
Design, experimental investigation and multi-objective optimization of a small-scale radial compressor for heat pump applications
J Schiffmann, D Favrat - Energy, 2010 - Elsevier
The main driver for small scale turbomachinery in domestic heat pumps is the potential for
reaching higher efficiencies than volumetric compressors currently used and the potential for …
reaching higher efficiencies than volumetric compressors currently used and the potential for …
Experimental investigation of a direct driven radial compressor for domestic heat pumps
J Schiffmann, D Favrat - International Journal of Refrigeration, 2009 - Elsevier
The presence of oil in domestic heat pumps is an obstacle toward higher efficiency,
particularly for enhanced surface evaporators and for advanced concepts based on two …
particularly for enhanced surface evaporators and for advanced concepts based on two …
A miniature 500 000-r/min electrically driven turbocompressor
D Krähenbühl, C Zwyssig, H Weser… - IEEE Transactions on …, 2010 - ieeexplore.ieee.org
The trend in compressors for fuel cells, heat pumps, aerospace, and automotive heating,
ventilation, and air-conditioning systems is toward ultracompact size and high efficiency …
ventilation, and air-conditioning systems is toward ultracompact size and high efficiency …
Multi-objective optimization of grooved gas journal bearings for robustness in manufacturing tolerances
A tolerancing method highlighting trade-offs against key design variables of mechanical
systems is proposed and applied to herringbone-grooved gas journal bearings. Gas …
systems is proposed and applied to herringbone-grooved gas journal bearings. Gas …
Thermal management for gas lubricated, high-speed turbomachinery
LE Olmedo, W Liu, K Gjika, J Schiffmann - Applied Thermal Engineering, 2023 - Elsevier
High-speed turbomachinery is commonly designed to achieve high power densities. Limited
space for active cooling results in a challenging thermal management. A thermal modeling …
space for active cooling results in a challenging thermal management. A thermal modeling …
Novel high-speed turbo compressor with integrated inverter for fuel cell air supply
M Antivachis, F Dietz, C Zwyssig, D Bortis… - Frontiers in Mechanical …, 2021 - frontiersin.org
Fuel cell technology is continuously gaining ground in E-mobility applications. Fuel cells
require a constant supply of pressurized air, for which high-speed turbo compressors with air …
require a constant supply of pressurized air, for which high-speed turbo compressors with air …
Experimental investigation of a Thermally Driven Heat Pump based on a double Organic Rankine Cycle and an oil-free Compressor-Turbine Unit
J Demierre, D Favrat, J Schiffmann, J Wegele - International journal of …, 2014 - Elsevier
This paper presents the experimental investigation of a concept of Thermally Driven Heat
Pump (TDHP), based on the coupling of a vapor compression heat pump cycle and an …
Pump (TDHP), based on the coupling of a vapor compression heat pump cycle and an …
Performance potential of gas foil thrust bearings enhanced with spiral grooves
The upscaling of turbomachinery using gas foil thrust bearings is limited because of their
limited load capacity and the thermal issues linked with very thin film thickness. The …
limited load capacity and the thermal issues linked with very thin film thickness. The …