NDLI: MEMS Sensors for Down-Hole Monitoring of Geothermal Energy Systems

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Wodin-Schwartz, Sarah Matthew, W. Chan Mansukhani, Kirti Ramesh Albert, P. Pisano Debbie, G. Senesky
Copyright Year	2011
Abstract	This paper reviews the limitations in current down-hole monitoring technologies for geothermal energy systems and introduces microelectromechanical systems (MEMS) sensors as a means of optimizing well performance. The use of continuous, real-time, down-hole monitoring can improve geothermal well efficiencies and increase well life. More specifically, monitoring can aid in obtaining accurate temperature and pressure profiles to allow for optimized well reinjection and energy extraction. A variety of materials used in the fabrication of MEMS sensors have been tested in an experimental geothermal environment (critical-point water) and exposed for up to 100 hours. The results obtained from the exposure testing support the use of harsh environment materials to create a suite of sensors that can be permanently located down-hole. MEMS-based temperature and pressure sensors using a harsh environment materials platform are currently in the design phase for down-hole monitoring. In addition to designing harsh environment sensors that can reliably monitor down-hole conditions, suitable packaging must be considered. One vision is to mount the sensors to the well casings through the use of new bonding technologies.
Sponsorship	Advanced Energy Systems Division and Solar Energy Division
Starting Page	965
Ending Page	972
Page Count	8
File Format	PDF
ISBN	9780791854686
DOI	10.1115/ES2011-54699
Volume Number	ASME 2011 5th International Conference on Energy Sustainability, Parts A, B, and C
Conference Proceedings	ASME 2011 5th International Conference on Energy Sustainability
Language	English
Publisher Date	2011-08-07
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Microelectromechanical systems Pressure sensors Water Temperature Pressure Geothermal engineering Design Geothermal power Packaging Well casings Sensors Manufacturing Bonding Testing
Content Type	Text
Resource Type	Article

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