Two-Phase Expanders
A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A1: Smart Grids and Microgrids".
Deadline for manuscript submissions: closed (1 December 2021) | Viewed by 290
Special Issue Editors
Interests: power from low grade heat; positive displacement machines
Interests: mathematical modelling and computer simulation of thermal and fluid flow processes, including turbulence models; experimental methods for investigating the performance of thermal machinery and systems, especially of positive displacement compressors and boilers; the application of analytical and experimental techniques to the design of positive displacement compressors, boilers, furnaces and pipe networks; industrial investigations of large scale thermal power plants
Special Issue Information
Dear colleagues,
The use of two-phase expanders for the recovery of power has a wide range of potential applications. Typically, the replacement of throttle and pressure reduction valves in refrigeration and air conditioning systems as well as in many industrial processes are examples of how they may be used to improve system efficiency. However, their use in the recovery of power from low grade heat sources and geothermal brines can enable huge gains in output to be made, provided that such machines can attain adiabatic efficiencies comparable to those of dry vapour expanders. Some limited success has been obtained in smaller scale plants with the use of positive displacement machines, of the scroll and screw type, however, to date, there have been no reports of success with two-phase turbines. The main obstacle appears to be the inability to create droplets small enough not to cause damage upon impact and to respond to aerodynamic forces. A breakthrough in this area could be a game changer. Authors are therefore encouraged to submit details of any work that they are currently carrying out in this specialist field.
Prof. Dr. Ian Smith
Prof. Dr. Nikola Stosic
Guest Editors
Manuscript Submission Information
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Keywords
- two-phase expanders
- turbines
- positive displacement machines
- power generation
