Impact of advanced blade configuration on small scale cryogenic axial turbine performance
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
Authors
Colleges, School and Institutes
Abstract
Cryogenic Energy Storage (CES) technology which uses liquid air/nitrogen as energy carrier has attracted considerable attention recently due to its high exergy density (762kJ/kg) compared to other energy storage technologies. Liquid air/nitrogen occupies about 1/700 of the volume of its gaseous phase making it easier to store and transport. The stored energy can be recovered through a direct expansion process where the expander design and performance have a major effect on the efficiency of the energy conversion process. In this work the effects of blade configuration including lean (-15° to +15°) and twist (-20° to +30°) angels for rotor and stator of a small scale axial cryogenic turbine have been investigated using ANSYS CFX 3D modelling. Results showed that at rotor lean angle of -10°, twist angle of 0° and hub / tip ratio of 0.83, the improvement in efficiency is 4.28% while for the same angles and hub / tip ratio of 0.66, the efficiency improvement is 1.35%. On the other hand, for rotor lean angle of 0° and twist angle of 30°, the improvement in efficiency for hub / tip ratio of 0.83 is 4.2% and for rotor lean angle of 0° and twist angle of 150, the improvement in efficiency for hub / tip ratio of 0.66 is 2.66%. the improvement was noticed when twist and lean angles for both the rotor and stator were changed simultaneously.
Details
Original language | English |
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Title of host publication | 2016 International Conference for Students on Applied Engineering (ICSAE) |
Editors | Zeyad Yousif Abdoon Al-Shibaany, Atheer F. Hameed |
Publication status | Published - 9 Jan 2017 |
Event | 1st International Conference for Students on Applied Engineering, ICSAE 2016 - Newcastle Upon Tyne, United Kingdom Duration: 20 Oct 2016 → 21 Oct 2016 |
Publication series
Name | International Conference for Students on Applied Engineering (ICSAE) |
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Conference
Conference | 1st International Conference for Students on Applied Engineering, ICSAE 2016 |
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Country | United Kingdom |
City | Newcastle Upon Tyne |
Period | 20/10/16 → 21/10/16 |
Keywords
- Blade design, Cryogonic, Storage energy, Turbine