Pipeline CAES system for storing and transporting wind energy Preksha Nair

Outline Compressed Air Pipeline System (CAPS) Design of Pipeline System – Various Factors Route Selection Materials Size and operating pressure Cost Challenges Conclusion

Compressed Air Pipeline System (CAPS) Grid Motor Compressor Energy Storage Expander Turbine Generator

Design Of Pipeline System Corridor Geographical Information Engineering Considerations Route Selection Durability Strength Steel Materials 200-1200 psia 600 psia and above desirable Size and operating pressure Factor of size and length Cost

Extreme pressure Conditions Different diameter 100-mile, 200 psia 3 ft. diameter Pressure drop of more than 20 psia. 4 ft. diameter Pressure drop of less than 10 psia. Extreme pressure Conditions 100-mile, 3 ft. diameter 200 psia Pressure drop more. 1200 psia Pressure drop less.

Breakdown of construction cost

Comparing cost of transmission lines and pipeline system, 2011 Voltage, kV Overhead Transmission Line Cost Per Mile Underground Transmission Line Cost Per Mile 69 $285,000 $1.5 million 138 $390,000 $2 million Size, Inches Pipeline Cost Per Mile on Land Underground Pipeline Cost Per Mile 12 $300,000 $420,000 48 $1.5 million $1.6 million

Challenges Air leakage Moisture Pressure Invest

conclusion Successful System Regulatory Considerations Economics Safety & Environmental Issues The basic concept of compressed air energy storage has existed for decades, and has been commercially available for over 30 years. It never caught on much and became mainstream. However, as the need for energy storage grew greater, CAES became more attractive, especially with the advancements in technology discussed earlier. Review of CAPS shows that pipeline system is a viable alternative for storing and transporting wind energy.

References Doug Evans, “Pipeline route selection – the route to success”. Oilandgastechnology.net (2013) Enis Ben M.  and Lieberman Paul; “Method of storing and transporting wind generated energy using a pipeline system”. Imtiaz Rastgar, “Effect of Corrosion in Steel Pipes”. Pakistan Textile Journal (2013) Frank Alonso and Carolyn A.E. Greenwell, “Underground vs. Overhead: Power Line Installation-Cost Comparison and Mitigation”. elp.com (2013) Anon, “Oil Industry Value Chain Economics”. beg.utexas.edu (2011) Anon, “Cost of pipelines”. hub.globalccsinstitute.com (2012)

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