Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Performance of Thermoactive Foundations for Commercial Buildings J. Sol. Energy Eng. 2013;135(4): doi: / (a) Simplified three-dimensional cylindrical model for a thermo-active foundation, and (b) grid scheme used for the numerical solution Figure Legend:

Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Performance of Thermoactive Foundations for Commercial Buildings J. Sol. Energy Eng. 2013;135(4): doi: / (a) A test set-up for a scale-model TAF system and (b) locations of strain and temperature probes Figure Legend:

Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Performance of Thermoactive Foundations for Commercial Buildings J. Sol. Energy Eng. 2013;135(4): doi: / Comparison of the experimental data and the predicted data: (a) far-field ground temperature, and (b) pipe outflow temperature Figure Legend:

Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Performance of Thermoactive Foundations for Commercial Buildings J. Sol. Energy Eng. 2013;135(4): doi: / Summary results of the sensitivity analysis for: (a) foundation depth, (b) shank space, (c) fluid velocity, and (d) number of U-tube loops in a foundation Figure Legend:

Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Performance of Thermoactive Foundations for Commercial Buildings J. Sol. Energy Eng. 2013;135(4): doi: / Comparative estimation from numerical solution and from (a) short-time step g-functions of Eskilson's approach, and from (b) long- time step g-function of Yavuzturk's approach Figure Legend:

Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Performance of Thermoactive Foundations for Commercial Buildings J. Sol. Energy Eng. 2013;135(4): doi: / Variations of g-functions for selected design TAF parameters including: (a) foundation depths, (b) volume flow rate, (c) shank space—long time steps, (d) shank space—short time steps, (e) concrete thermal conductivity, and (f) soil thermal conductivity Figure Legend:

Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Performance of Thermoactive Foundations for Commercial Buildings J. Sol. Energy Eng. 2013;135(4): doi: / Location of foundation piles along the office building slab floor Figure Legend:

Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Performance of Thermoactive Foundations for Commercial Buildings J. Sol. Energy Eng. 2013;135(4): doi: / Schematic heating and cooling TAF system as modeled in EnergyPlus Figure Legend:

Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Performance of Thermoactive Foundations for Commercial Buildings J. Sol. Energy Eng. 2013;135(4): doi: / Impact of TAF design parameters on building heating and cooling energy end-uses for an office building in Chicago, IL Figure Legend:

Date of download: 5/27/2016 Copyright © ASME. All rights reserved. From: Performance of Thermoactive Foundations for Commercial Buildings J. Sol. Energy Eng. 2013;135(4): doi: / Percent reduction of cooling and heating energy end-uses associated with TAF system for a prototypical small office building in five U.S. climates Figure Legend: