Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Reliability-Based Assessment of Sustainable Heat Exchange through Pile Foundations
The use of geothermal energy as an auxiliary energy source in residential and commercial buildings may lead to significant reductions in energy-use cost and CO2 emissions. Geothermal or heat exchanger piles are being used in different parts of the world to serve dual roles: supporting superstructure load and harvesting shallow geothermal energy. Energy harvested through these piles can partially meet building energy demand. Different design, operational, and site-specific variables have significant effects on the heat exchange efficiency of geothermal piles. Present study uses a finite difference model to analyze heat transfer through energy piles. Analyses are performed for practical ranges of input parameters available in literature. Results from numerical simulations are expressed in the form of Tornado diagram, which shows the relative sensitivity of energy output on important model parameters. Considering statistical independence of different input parameters, first order second moment (FOSM) reliability analysis is performed to evaluate the relative variance of energy output due to individual variability of input parameters. Results obtained from this study provide a comprehensive understanding of possible variation of energy efficiency of geothermal piles when one or more input parameters vary within their acceptable ranges.
Reliability-Based Assessment of Sustainable Heat Exchange through Pile Foundations
The use of geothermal energy as an auxiliary energy source in residential and commercial buildings may lead to significant reductions in energy-use cost and CO2 emissions. Geothermal or heat exchanger piles are being used in different parts of the world to serve dual roles: supporting superstructure load and harvesting shallow geothermal energy. Energy harvested through these piles can partially meet building energy demand. Different design, operational, and site-specific variables have significant effects on the heat exchange efficiency of geothermal piles. Present study uses a finite difference model to analyze heat transfer through energy piles. Analyses are performed for practical ranges of input parameters available in literature. Results from numerical simulations are expressed in the form of Tornado diagram, which shows the relative sensitivity of energy output on important model parameters. Considering statistical independence of different input parameters, first order second moment (FOSM) reliability analysis is performed to evaluate the relative variance of energy output due to individual variability of input parameters. Results obtained from this study provide a comprehensive understanding of possible variation of energy efficiency of geothermal piles when one or more input parameters vary within their acceptable ranges.
Reliability-Based Assessment of Sustainable Heat Exchange through Pile Foundations
Ghasemi-Fare, Omid (Autor:in) / Basu, Prasenjit (Autor:in) / Banerjee, Swagata (Autor:in)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 3323-3332
24.02.2014
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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