Horizontal Thermal Conductivity Testing
Terry Proffer
Major Geothermal
Ed Lohrenz
Geo-Xergy Systems
This short course will present methods for pre-design to assign test parameters for testing, integration of test data into a horizontal loop model, and describe approaches for accounting for shallow-impact variables such as temperature swing into the design process.

Terry Proffer is an AEE/IGSHPA certified geoexchange designer, IGSHPA accredited installer and trainer.  He is also a factory certified ClimateMaster installation and service instructor.  Proffer has taught residential and commercial heat load analysis, loop design, thermal conductivity testing and field installation.  His system designs drive forced air, radiant, snowmelt, domestic hot water and industrial process water applications.  Over the past 17 years Proffer has designed and consulted on projects throughout North America, Asia and Europe.

HDPE Vault Installation
Don McGriff
ISCO Industries
General considerations for HDPE vault installations will be discussed.  These include: main and lateral sizing option, cylinder sizing, fabrication procedures, installation locations, lids, anti-flotation and manifold and cylinder testing.

McGriff is director of technical design for ISCO Industries.  He began working with Fluid Controls, Inc. in Huntsville, Alabama as estimator for High Density Polyethylene (HDPE) fabrications.  McGriff is a member of ASME and is involved with the B31.3 process piping committee including the subgroup for non-metallic piping.  In 1999 McGriff became part of ISCO Industries LLC when they acquired Fluid Controls.  He has more than 15 years experience in the application of HDPE piping in geothermal, municipal, industrial, landfill, irrigation and other markets.

Building Load Calculations and the Impact on the GHX
Ed Lohrenz, CGD,
Geo-Xergy Systems
How building loads are calculated and interpreted can have a significant impact on the size and cost of the ground heat exchanger required. Lohrenz examines load interpretation, design of mechanical systems and impact to the GeoExchange system.

Lohrenz was introduced to the concept of using the ground as an energy source while working with a geological engineering firm in 1982. Since then he has worked as a geothermal system installer, an equipment supplier, a manufacturer, a system design consultant and a trainer for residential and commercial system design. He is president of Geo-Xergy Systems Inc., an engineering design firm specializing in geothermal system design.

What’s PEXa and Why Does it Make a Great Ground Loop?
Sean Custus
IGSHPA’s recognition last fall of PEXa pipe and compression-sleeve fittings for geothermal applications has sparked U.S. market interest in this widely-used hydronic piping technology. This course provides an overview of the technical performance capabilities of PEXa pipe, fittings and manifolds, and the resulting benefits to system installers and building owners.  Through hands-on product demonstrations, you will experience the material properties of a PEXa-based geothermal system.