TY - GEN
T1 - Investigation of a small-scale compressed air energy storage pile as a foundation system
AU - Kim, Sihyun
AU - Ko, Junyoung
AU - Kim, Seunghee
AU - Seo, Hoyoung
AU - Tummalapudi, Manideep
N1 - Publisher Copyright:
© ASCE.
PY - 2017
Y1 - 2017
N2 - Compressed air energy storage (CAES), in which surplus energy is utilized for compressing ambient air that can be released later to provide necessary energy, is being actively pursued in a last decade. This technology has a potential to strengthen the efficiency of renewable energy generation, such as solar and wind power. In addition to the large-scale energy storages, CAES can be operated at a small-scale to support facilities such as residential buildings. In this case, closed-ended steel piles can serve to provide the space where pressurized air is stored during off-peak periods, which leads to an idea of small-scale CAES pile. To continue pursuing the idea of using pile foundation system as an energy storage vessel, we need to examine long-term stability of CAES pile. In this pilot study, we investigate a finite element model of an axisymmetric CAES pile that is subject to the internal uniform pressurization while supporting a constant structural load. Long-term stability of the CAES pile is assessed from the first 10 pressurization-depressurization cycles at the various initial dead load conditions. Elasto-perfectly-plastic constitutive law is employed at the pile-soil interface for simplicity. We are able to observe that vertical displacement of the CAES pile accumulates with negligible radial deformation as the number of pressure cycle increases.
AB - Compressed air energy storage (CAES), in which surplus energy is utilized for compressing ambient air that can be released later to provide necessary energy, is being actively pursued in a last decade. This technology has a potential to strengthen the efficiency of renewable energy generation, such as solar and wind power. In addition to the large-scale energy storages, CAES can be operated at a small-scale to support facilities such as residential buildings. In this case, closed-ended steel piles can serve to provide the space where pressurized air is stored during off-peak periods, which leads to an idea of small-scale CAES pile. To continue pursuing the idea of using pile foundation system as an energy storage vessel, we need to examine long-term stability of CAES pile. In this pilot study, we investigate a finite element model of an axisymmetric CAES pile that is subject to the internal uniform pressurization while supporting a constant structural load. Long-term stability of the CAES pile is assessed from the first 10 pressurization-depressurization cycles at the various initial dead load conditions. Elasto-perfectly-plastic constitutive law is employed at the pile-soil interface for simplicity. We are able to observe that vertical displacement of the CAES pile accumulates with negligible radial deformation as the number of pressure cycle increases.
UR - http://www.scopus.com/inward/record.url?scp=85018768948&partnerID=8YFLogxK
U2 - 10.1061/9780784480472.011
DO - 10.1061/9780784480472.011
M3 - Conference contribution
AN - SCOPUS:85018768948
T3 - Geotechnical Special Publication
SP - 103
EP - 112
BT - Geotechnical Special Publication
A2 - Brandon, Thomas L.
A2 - Valentine, Richard J.
PB - American Society of Civil Engineers (ASCE)
Y2 - 12 March 2017 through 15 March 2017
ER -