1. 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):040907-040907-10. doi:10.1115/1.4025587 (a) Simplified three-dimensional cylindrical model for a thermo-active foundation, and (b) grid scheme used for the numerical solution Figure Legend:

2. 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):040907-040907-10. doi:10.1115/1.4025587 (a) A test set-up for a scale-model TAF system and (b) locations of strain and temperature probes Figure Legend:

3. 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):040907-040907-10. doi:10.1115/1.4025587 Comparison of the experimental data and the predicted data: (a) far-field ground temperature, and (b) pipe outflow temperature Figure Legend:

4. 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):040907-040907-10. doi:10.1115/1.4025587 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:

5. 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):040907-040907-10. doi:10.1115/1.4025587 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:

6. 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):040907-040907-10. doi:10.1115/1.4025587 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:

7. 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):040907-040907-10. doi:10.1115/1.4025587 Location of foundation piles along the office building slab floor Figure Legend:

8. 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):040907-040907-10. doi:10.1115/1.4025587 Schematic heating and cooling TAF system as modeled in EnergyPlus Figure Legend:

9. 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):040907-040907-10. doi:10.1115/1.4025587 Impact of TAF design parameters on building heating and cooling energy end-uses for an office building in Chicago, IL Figure Legend:

10. 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):040907-040907-10. doi:10.1115/1.4025587 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: