Geothermal Heat Pump and Energy Recovery Applications
ASHRAE Technical Committee 6.8

ASHRAE resources are a great place to find information about geothermal energy and ground source heat pumps.
More Detailed Information can be found in the following ASHRAE publications
     ◦Ground Source Heat Pumps--Design of Geothermal Systems for Commercial and Institutional Buildings
     ◦Operating Experiences with Commercial Ground-Source Heat Pump Systems
     ◦Commercial Ground-Source Heat Pump System
     ◦Geology and the Ground Heat Exchanger: An Introduction for Design Engineers
     ◦Geology and Drilling Methods for Ground-Source Heat Pump Installations: An Introduction for Engineers 

ASHRAE Journal Articles are a great place to find information about geothermal energy and ground source heat pumps.
2012 - Long-Term Commercial GSHP Performance Part 1: Project Overview and Loop Circuit Types
2012 - Long-Term Commercial GSHP Performance Part 2: Ground Loops, Pumps, Ventilation Air and Controls
2012 - Long-Term Commercial GSHP Performance Part 3: Loop Temperatures
2012 - Long-Term Commercial GSHP Performance Part 4: Installation Cost
2012 - Long-Term Commercial GSHP Performance Part 5: Comfort and Satisfaction
2013 - Long-Term Commercial GSHP Performance Part 6: Maintenance and Controls
2013 - Long-Term Commercial GSHP Performance Part 7: Achieving Quality

2008 - Community Center with Heat Recovery
2009 - GSHP: Simple is Better
2009 - One-Pipe Geothermal Design
2009 - Water-to-Water Heat Pumps
2012 - Residential GSHPs      
2013 - Water-to-Water Heat Pumps for Centralized Plants
2013 - GHP Piping Systems
2013 - ReHeat for Medical Center 
2013 - Low EUI Community Hospital
2013 - Geothermal for 5 Ecosystems

2013 - Olympic Village -Sewage Plant Heats Village

2016 - A Simple Approach to Affordable GSHPs - April

2018 - Paving a path for Zero Energy Schools - Arlington, Va. - GSHP
2018 - Holistic Design Approach for Energy Efficiency - Lexington, Ky. - GSHP Office Bldg

ASHRAE members have free access to research project final reports. Non-ASHRAE members can purchase research reports for $30 per article from the ASHRAE Bookstore found at this link.

Search ASHRAE's vast information archive - https://technologyportal.ashrae.org

The following organizations have resources for information on geothermal energy and ground source heat pumps;
•The International Ground Source Heat Pump Association (IGSHPA) - igshpa.org   
•Geo-Heat Center, Oregon Institute of Technology - geoheat.oit.edu
•Geothermal Heat Pump Consortium (GHPC) - geoexchange.org  
•Energy Information Services - geokiss.com  
•National Ground Water Association (NGWA) - ngwa.org