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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Gill, David Bryan, J. Farley |
| Copyright Year | 2013 |
| Abstract | Valves used in molten salt thermal energy storage systems often utilize conventional packing methodology and materials. These packing materials often exhibit relatively short lifetimes because of the reactive interaction of the salt and packing. Past research has indicated that valve packing lifetime is affected by both stress and temperature in the packing. Because of this interaction, it is important to understand the stress in the packing and to find ways to reduce the packing stress. A finite element model of a valve stem/packing system was created and material properties of the packing were determined and validated against previous work. The model was then used to evaluate the stress induced in the packing system through linear axial motion and then extended to include rotational stem motion as well. The analysis confirmed previous results that axial translation created a significant amount of stress in the valve packing. The newly included rotational motion of the valve stem was found to affect the packing stress only minimally. This result suggests that development of better rotary valves would be very useful for utilization in molten salt service, especially as the temperature of the salts are increased in an effort to achieve higher power cycle efficiencies. |
| Sponsorship | Advanced Energy Systems Division Solar Energy Division |
| File Format | |
| ISBN | 9780791855515 |
| DOI | 10.1115/ES2013-18363 |
| Volume Number | ASME 2013 7th International Conference on Energy Sustainability |
| Conference Proceedings | ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology |
| Language | English |
| Publisher Date | 2013-07-14 |
| Publisher Place | Minneapolis, Minnesota, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Temperature Finite element model Packing (shipments) Packings (cushioning) Materials properties Thermodynamic power cycles Valves Thermal energy storage Rotation Stress |
| Content Type | Text |
| Resource Type | Article |
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