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Information for Prospective Licensees

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PLEASE NOTE

 

Statements made herein conform to current knowledge of the evaporation engines and their applications, but do not represent warranties.  Prospective licensees should make an independent evaluation of the technology. 

 

Key parts of the technology described below are the subject of patent applications.  Other aspects are held confidential.  If you wish to examine this information under Non-Disclosure Agreement, please contact Sunoba Pty Ltd.   A licence from Sunoba Pty Ltd is required to manufacture multi-stage Expansion-Cycle Evaporation Turbines for commercial use in any country that is a signatory to the Patent Cooperation Treaty.  A licence is also required to manufacture any evaporation engine for commercial use in Australia.

 

 

Booster for Open-Cycle Gas Turbines

 

Case studies show that the continuous-flow Expansion-Cycle Evaporation Turbine (ECET) offers a boost of more than 20% to the power output of typical Open-Cycle Gas Turbines (OCGTs), without any extra fuel consumption and at a specific capital cost expected to be no greater than that for the upstream OCGT.  Although bulky, the ECET will be mechanically less complex than the upstream OCGT and just as quick to provide power. 

 

Introductory details of the ECET thermodynamic cycle and an illustrative economic analysis are provided on this web site.  The economic analysis shows that the OCGT+ECET combination has a clear advantage over a simple OCGT at all Capacity Factors.  Further, the OCGT+ECET combination has an advantage over conventional Combined-Cycle Gas Turbines at modest Capacity Factors.

 

The technology is therefore attractive for peak duty and some shoulder duty in the electricity grid.

 

To help prospective licensees with their evaluation, Sunoba Pty Ltd offers thermodynamic calculations and economic analysis as a consulting service.  Details are given at the bottom of the ECET page.

 

Passive solar thermal power generation

 

The evaporation engine is also applicable to generate power from heat energy collected passively under a transparent insulated canopy.  In this application, temperatures will be much less than the exhaust temperature of OCGTs, and the preferred way to exploit the evaporation power cycle is via a piston-in-cylinder mechanism.

 

The heat collection canopy will consist of glass sheets with simple modifications to control losses caused by infrared radiation and convective heat transfer.  The required piston-in-cylinder engine will be large, lightly stressed and slow-revving.

 

Non-confidential details of the performance and cost of the passive solar evaporation engine are provided on this web site.  Cost metrics compare favourably with existing PV and Concentrated Solar Thermal technologies.  Current research is focussed on thermal storage so as to reduce the Levelised Electricity Cost and provide despatchable solar power. 

 

 

© Sunoba Pty Ltd

12 May 2011