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Villanova Engineering SCW Experiment

Villanova Engineering SCW Experiment. Prof. Al Ortega & students Albert A. Koenig, Ph.D. ARB/Geowell Systems. ARB/Geowell Systems. Located Conshohocken, PA (outside Philadelphia) Solely owned by American Refining Biochemical (ARB) CEO, Harry Halloran Energy Consultant: Albert Koenig, Ph.D.

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Villanova Engineering SCW Experiment

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  1. Villanova EngineeringSCW Experiment Prof. Al Ortega & students Albert A. Koenig, Ph.D. ARB/Geowell Systems

  2. ARB/Geowell Systems • Located Conshohocken, PA (outside Philadelphia) • Solely owned by American Refining Biochemical (ARB) • CEO, Harry Halloran • Energy Consultant: Albert Koenig, Ph.D.

  3. Purpose Build and test SCW test rig seeking to verify: • In-well string component design • Ease of installation & replacement • Operation • Sealing (upcomer from return water) • Pump housing suspension • Laminar flow slit design near bottom of well • Pump & control valve performance

  4. Water Supply/Return Heat Propagation SCW Downhole ComponentsSleeved vs. New GeowellTM Design Pump Discharge to Bldg. HX Pump Housing @ 80' Depth Pump Extension Lines Slitted Water Entryway Concrete Guide 800' Bottomhole Depth

  5. Villanova Project Equipment, Personnel & Facilities

  6. Villanova Engineering Team

  7. Experimental Layout & Test Facility 21' Clear PVC Water Column

  8. Pump/Casing 2 20 Foam float 1.5 Polypipe entry section 11 Concrete guide 1.3

  9. 2nd Story Balcony Test Bay

  10. Ext. Plumbing, Control & Heat Exchanger

  11. String Components Pump Housing & Float Assembly Concrete Guide

  12. Pump Assembly 13GS05 Submersible with 3ph Motor Mating Housing Cap

  13. Insertion of String into Column

  14. Polypipe 1.25” Black Polypipe 2 - 1’ Long ; 1/16” Wide Inlet Slits • Located 1’ from concrete guide • 180° apart

  15. Polypipe Water Entry Slit Water Column 1.25" Polypipe .0625" x 12" Slit

  16. Insertion of Pump Assembly into Housing Seated Entry

  17. Completed String Ready for Test

  18. Flow Characterization Flow made visible by reflection from particulates in water with backlighting Real – Time Video Streamlines

  19. Measurements & Test Results • Verified that the float can suspend the PVC housing; the polypipe tends to support the string where it contacts the well bore • Observed no problem with installation of the pump assembly into the suspended PVC housing • Observed no leakage into the housing top seal from the outside annular space (shunting) • Cyclic flow along the water column from the pump through the control valve, heat exchanger and return line was recorded from 5-20 GPM • Measured (using bubble entrainment) uniform flow into the slit area near the bottom of the string • Observed no apparent contribution of water below the slit, i.e. no stirring of bottom water that would bring bottom hole sediment into the intake line(s)

  20. Observations • Float appears to be unnecessary, since the string is supported by the polypipe contour against the wellbore wall • At full flow (20 GPM), there was no observable torque on the string; bubble formation was noticeable at the top of the housing => new design using a conical boot for smooth transition • Discussions with Rainbird re. valve reliability (solenoid triggering problem)

  21. Next Steps • Working with Villanova engineering & facilities to identify an appropriate geothermal application on campus • Likely start with 1-2 wells @ 800’ to provide up to 20 tons of cooling for a bldg. with little or no AC • This project will be monitored by Villanova engineering faculty & students as part of the curriculum

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