1. Open Loop

   Open loop systems utilizing water wells and/or surface water. Pump and dump, pump and re-inject.

   Discussions:

   79

   Messages:

   914

   Latest: Monodrive XT vs. Cycle Stop Valve waterpirate, Feb 20, 2019

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2. Vertical and Horizontal Loops

   Closed vertical and horizontal loops

   Discussions:

   165

   Messages:

   1,868

   Latest: 'Double piped' well? gsmith22, Jul 9, 2019

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3. Surface Water Loops

   Closed loops installed in ponds, lakes, rivers and oceans.

   Discussions:

   22

   Messages:

   285

   Latest: New Pond Geothermal System Design RogerH, Apr 26, 2018

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4. Standing Column Well (SCW)

   Discussions:

   19

   Messages:

   322

   Latest: Standing Column Pumping Energy Douglas Bittinger, Sep 5, 2017

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5. Hybrid Systems

   Loop systems that use two or more conventional loop types or solar systems, cooling towers, thermal storage systems, etc.

   Discussions:

   9

   Messages:

   93

   Latest: Closed Loop with Temperature Dump? mtrentw, Feb 27, 2018

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