BUOYANCY VORTEX POWER FROM LOW-TEMPERATURE HEAT
- Key words
- Power generation, waste heat, low temperature, buoyancy vortices, vortex
- Conference
- New Zealand Geothermal Workshop
- Year
- 2018
- Session
- Session 1.3 The Future of Geothermal
- Language
- English
- Paper number
- 31
Full text
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Abstract
A modification of the heat-engine theory of Renno and Bluestein (2001) is proposed for an improved prediction of vortex height, thermodynamic efficiency and tangential velocity in atmospheric buoyancy vortices, through a reconsideration of the cold reservoir of the heat engine, as occurring in a turbulent plume above the vortex core. Preliminary modeling suggests a carbon-neutral method of converting energy from waste heat at temperatures below 60? to electricity with an efficiency of the order of 5% by exploiting saturated convection.
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