Utility requirements for power recovery in the cryogenic and chemical industry using variable frequency drives in the regenerative mode

LeGoy, P.R.

doi:10.1109/pess.1999.784408

Cited by 5 publications

(1 citation statement)

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“…The three components compressor, cooler and valve could be replaced with a single generator and thereby produce electricity. Hence, the efficiency of such plants could be increased [4]. Since the turbo expander and the brake cooler are located near each other, the temperature gradient between the cool expander and the warm compressor is extremely high.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental results of a mesoscale electric power generation system from pressurized gas flow

Krähenbühl

Zwyssig²,

Weser³

et al. 2009

J. Micromech. Microeng.

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In many process applications where throttling is used to reduce pressure, the potential to obtain net work output is sacrificed to the throttling process. Examples are throttling valves of gas pipelines and conventional throttles in automotive applications or turbo expanders as used in cryogenic plants. With a new pressure reduction system that produces electricity while expanding the gas, the lost potential to obtain work output can be recovered. To achieve a high power density, this energy generation system requires an increased operating speed of the electrical machine and the turbomachinery. This paper presents a miniature compressed-air-to-electric-power system, based on a radial turbine with a rated rotational speed of 490 000 rpm and a rated electric power output of 150 W. A comprehensive description including turbine, diffuser and permanent magnet (PM) generator is given. Finally, measurements of the compressed-air-to-electric-power system with a maximum rotational speed of over 600 000 rpm, a maximum electric output power of 170 W, a maximum torque of 5.2 mN m and a turbine efficiency of 52% are presented.

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Section: Introductionmentioning

confidence: 99%

Theoretical and experimental results of a mesoscale electric power generation system from pressurized gas flow

Krähenbühl

Zwyssig²,

Weser³

et al. 2009

J. Micromech. Microeng.

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Development of a submerged winding induction generator for cryogenic applications

Shively¹,

Miller²

Conference Record of the 2000 IEEE International Symposium on Electrical Insulation (Cat. No.00CH37075)

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Design Considerations and Experimental Results of a 60 W Compressed-Air-to-Electric-Power System

Krähenbühl

Zwyssig

Hörler

et al. 2008

2008 IEEE/ASME International Conference on Mechtronic and Embedded Systems and Applications

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In many process applications, where a pressure n n reduction is required the energy ends up being dissipated as heat.nozzle nozzle guide air Examples are throttling valves of gas pipelines and automotive guide vane vane casing outlet engines or turbo expanders as used in cryogenic plants. With a new pressure reduction system that produces electricity while expanding the gas, this lost energy can be recovered. To achieve a high power density this energy generation system requires an increased operating speed of the electrical machine and the prsuieabaigsting turbomachinery. This paper proposes a miniature compressedpr d beag stator bearin air-to-electric-power system, based on a single-stage axial bearig impulse turbine with a rated rotational speed of 350 000 rpm and shield 2 a rated electric power output of 60 W. A comprehensive lcm description including turbine and permanent magnet (PM) Fig. 1. Picture of the ultra compact (22 mm x 60 mm) air-to-power generator is given and measurements like maximum electric demonstrator. output power of 124 W and maximum system efficiency of 24 % Power density in both turbomachinery and electrical machines are presented.increases with increasing rotational speed [5], [6]. Therefore, for highest power density, these systems are operating at

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Utility requirements for power recovery in the cryogenic and chemical industry using variable frequency drives in the regenerative mode

Cited by 5 publications

References 0 publications

Theoretical and experimental results of a mesoscale electric power generation system from pressurized gas flow

Theoretical and experimental results of a mesoscale electric power generation system from pressurized gas flow

Development of a submerged winding induction generator for cryogenic applications

Design Considerations and Experimental Results of a 60 W Compressed-Air-to-Electric-Power System

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