New Warehouse/ Office Facility & Trexlertown Elementary School
Annville, PA
A manufacturing business required geothermal well field design services for a proposed 50 to 75-ton HVAC system for a new warehouse/office facility. ARM evaluated the site hydrogeology and HVAC requirements and recommended a preliminary geothermal feasibility study. Subsurface geophysical (electrical resistivity) surveys and local hydrogeologic analyses revealed significant aquifer potential to meet the groundwater requirements for an open-loop well field supporting a geothermal system of up to 250 tons. Three high yield wells were completed (two production wells and an injection well) that exceeded the HVAC water requirements for the open-loop system. Water disposal will be handled via an injection well with onsite stormwater management facilities as a backup water disposal area.
Parkland School District
ARM was retained to provide hydrogeologic and geothermal well field planning services for a 200 to 300-ton ground source geothermal HVAC system. ARM’s investigation indicated that the site was capable of supporting an open-loop, standing-column, or closed-loop type of well field. The initial test well produced flows of over 600 gallons-per-minute, indicating that the site could support any type of well field for the proposed facility. The client chose to develop a closed-loop system.
ARM coordinated with the architect and mechanical engineering contractor to develop a cost-effective solution for the geothermal well field location and design; including well placement, spacing between wells, well depth, casing/grouting requirements, and connection to the facility. ARM utilized subsurface geophysical (electrical resistivity) surveys to determine site-specific bedrock conditions that would provide optimal thermal characteristics for the well field while minimizing drilling and completion costs. The geothermal well field was situated at a location that would allow sufficient thermal gradient characteristics for the proposed HVAC system and also minimize drilling and completion costs. Geothermal well field technical specifications and estimated costs were delivered to the client. Construction was completed in the fall 2009.
New Warehouse/ Office Facility & Trexlertown Elementary School
Annville, PA
A manufacturing business required geothermal well field design services for a proposed 50 to 75-ton HVAC system for a new warehouse/office facility. ARM evaluated the site hydrogeology and HVAC requirements and recommended a preliminary geothermal feasibility study. Subsurface geophysical (electrical resistivity) surveys and local hydrogeologic analyses revealed significant aquifer potential to meet the groundwater requirements for an open-loop well field supporting a geothermal system of up to 250 tons. Three high yield wells were completed (two production wells and an injection well) that exceeded the HVAC water requirements for the open-loop system. Water disposal will be handled via an injection well with onsite stormwater management facilities as a backup water disposal area.
Parkland School District
ARM was retained to provide hydrogeologic and geothermal well field planning services for a 200 to 300-ton ground source geothermal HVAC system. ARM’s investigation indicated that the site was capable of supporting an open-loop, standing-column, or closed-loop type of well field. The initial test well produced flows of over 600 gallons-per-minute, indicating that the site could support any type of well field for the proposed facility. The client chose to develop a closed-loop system.
ARM coordinated with the architect and mechanical engineering contractor to develop a cost-effective solution for the geothermal well field location and design; including well placement, spacing between wells, well depth, casing/grouting requirements, and connection to the facility. ARM utilized subsurface geophysical (electrical resistivity) surveys to determine site-specific bedrock conditions that would provide optimal thermal characteristics for the well field while minimizing drilling and completion costs. The geothermal well field was situated at a location that would allow sufficient thermal gradient characteristics for the proposed HVAC system and also minimize drilling and completion costs. Geothermal well field technical specifications and estimated costs were delivered to the client. Construction was completed in the fall 2009.