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   Definitive Loop Design - Vertical Bore Closed Loop


GEO®Hourly Advantages:
  • Unique Zone Hourly Analysis
  • Realistic Heat Pump Operation
  • Proper Size Zone Heat Pumps
  • Energy Model - Zones
  • Intelligent Triple Hourly Zone Analysis
  • Lower the First Cost
  • Easy Analysis Optimization
  • Hybrid Design Integration
  • Patents No. 9,443,043 and No.9,852,243

Vertical Boreholes Closed Loop

 ◦   GEO®Hourly definitive ground loop design for vertical boreholes are connected in a closed loop in-ground heat exchanger. The vertical borehole is usually about 5 inches in diameter and is drilled into the soil or rock without using casing. The vertical boreholes are about 300 feet deep and the drilling rigs is similar to a water well drilling rig. Depending on the ground condition drilling mud can be used to evacuate the drilling cutting out of the hole, or drilling with compressed air that blows the cuttings out of the hole.

 ◦   Vertical boreholes are usually separated about 20 feet apart and the grid layout with the lowest temperature interference between boreholes is a long narrow arraignment. A boxy grid layout arrangement can trap heat stored and required additional design contingency to offset that situation.

 ◦   The U-bend Hdpe pipe inserted into the vertical borehole is usually 1 inch in diameter and a tremie pipe is also inserted into the vertical borehole for delivering the grout slurry. The tremie is then removed from the vertical borehole during the grouting process.

 ◦   Vertical borehole can be designed with good accuracy because the earths temperature below 28 feet is constant all year and creates a stable environment for the in-gound heat exchanger. Vertical boreholes are the most universally applicable ground source system configuration for commercial applications.

 ◦   Vertical boreholes need less pipe and require less land area than do Horizontal ground loops, and do not require water-bearing formations.