TY - GEN
T1 - Performance of a Field-Scale Shallow Horizontal Thermal Energy Storage System
AU - Başer, Tuǧçe
AU - Hanna, Candice
AU - McCartney, John S.
N1 - Publisher Copyright:
© 2019 American Society of Civil Engineers.
PY - 2019
Y1 - 2019
N2 - This study focuses on the performance of a shallow, horizontal thermal energy storage system in San Diego. Heat collected from solar thermal panels over a period of 120 days was injected into a slinky-loop heat exchanger installed at a depth of 1.2 m from the ground surface in compacted backfill soil, and the evolution in ground temperature was measured using embedded temperature sensors in the subsurface. Although the heat injection rate used in the experiment was relatively small, the field test still provides useful data for the validation of design models for horizontal heat storage systems. For an average heat injection rate of 20 W/m2, the ground temperature increased to approximately 6°C greater than the ambient ground temperature expected at the depth of the heat exchanger. An analytical model for horizontal heat exchangers considering surface temperature fluctuations was calibrated against the measured data and was used to evaluate the impacts of design parameters on the storage of thermal energy in the shallow subsurface.
AB - This study focuses on the performance of a shallow, horizontal thermal energy storage system in San Diego. Heat collected from solar thermal panels over a period of 120 days was injected into a slinky-loop heat exchanger installed at a depth of 1.2 m from the ground surface in compacted backfill soil, and the evolution in ground temperature was measured using embedded temperature sensors in the subsurface. Although the heat injection rate used in the experiment was relatively small, the field test still provides useful data for the validation of design models for horizontal heat storage systems. For an average heat injection rate of 20 W/m2, the ground temperature increased to approximately 6°C greater than the ambient ground temperature expected at the depth of the heat exchanger. An analytical model for horizontal heat exchangers considering surface temperature fluctuations was calibrated against the measured data and was used to evaluate the impacts of design parameters on the storage of thermal energy in the shallow subsurface.
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U2 - 10.1061/9780784482148.028
DO - 10.1061/9780784482148.028
M3 - Conference contribution
AN - SCOPUS:85063435779
SN - 9780784482148
T3 - Geotechnical Special Publication
SP - 273
EP - 281
BT - Geotechnical Special Publication
A2 - Meehan, Christopher L.
A2 - Kumar, Sanjeev
A2 - Pando, Miguel A.
A2 - Coe, Joseph T.
PB - American Society of Civil Engineers
T2 - 8th International Conference on Case Histories in Geotechnical Engineering: Geoenvironmental Engineering and Sustainability, Geo-Congress 2019
Y2 - 24 March 2019 through 27 March 2019
ER -