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2013
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Invention
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Ground loops and insulation for direct exchange geothermal systems.
A direct exchange geothermal... |
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Invention
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Ground loops and insulation for direct exchange geothermal systems. A direct exchange geothermal ... |
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2012
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Invention
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Sub-surface insulation and well depth reduction for dx geothermal heat pump and refrigeration sys... |
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Invention
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Dx geothermal heat pump and refrigeration systems. At least one of a DX geothermal refrigeration ... |
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2009
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Invention
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Heat transfer refrigerant transport tubing coatings and insulation for a direct exchange geotherm... |
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Invention
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Dx system interior heat exchanger defrost design for heat to cool mode. A DX heating/cooling syst... |
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Invention
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Oil return for a direct exchange geothermal heat pump. A heating/cooling system design enabling o... |
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Invention
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Dx system heat to cool valves and line insulation. Alternative means of inhibiting frosting in th... |
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Invention
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Dx system having heat to cool valve. Alternative means of inhibiting frosting in the interior hea... |
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2008
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Invention
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Dx system with liquid filtered suction line, low superheat, and oil provisions. A heating/cooling... |
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Invention
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Dx system with filtered suction line, low superheat, and oil provisions. A heating/cooling system... |
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Invention
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Double dx hydronic system. A double DX hydronic heating/cooling system includes a primary DX syst... |
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Invention
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Advanced dx system design improvements. A direct exchange geothermal heating/cooling system has a... |
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Invention
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Advanced dx system design improvements. A direct exchange geothermal heating/cooling system (40) ... |
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Invention
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Direct exchange heating/cooling system. A direct exchange heating/cooling system includes a speci... |
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Invention
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Direct exchange system design improvements. An R-410A DX heating/cooling system with: an electric... |
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Invention
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Multi-faceted designs for a direct exchange geothermal heating/cooling system. A direct exchange ... |
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2007
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Invention
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Advanced direct exchange geothermal heating/cooling system design.
A direct expansion/direct exc... |
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Invention
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Heat pump dehumidification system. A heat pump dehumidification system comprised of one of an air... |
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Invention
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Heat pump dehumidification system.
A heat pump dehumidification system comprised of one of an ai... |
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2006
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Invention
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Direct exchange geothermal heating/cooling system sub-surface tubing installation with supplement... |
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Invention
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Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heati... |
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2005
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Invention
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Capillary tube/plate refrigerant/air heat exchanger for use in conjunction with a method and appa... |
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2004
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P/S
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geothermal heating and cooling units for residential and commercial applications; heat exchangers... |
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Invention
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Horizontal and vertical direct exchange heating/cooling system sub-surface tubing installation me... |
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Invention
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Vertically oriented direct exchange/geothermal heating/cooling system sub-surface tubing installa... |
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Invention
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Sub-surface tubing spacer means for direct expansion heating/cooling systems. A direct expansion ... |
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Invention
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Sub-surface and optionally accessible direct expansion refrigerant flow regulating device. ABSTRA... |
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Invention
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Heat pump/direct expansion heat pump heating, cooling, and dehumidification system. A heat pump h... |
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Invention
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Deep well/long trench direct expansion heating/cooling system. A direct expansion geothermal heat... |
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Invention
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Deep well direct expansion heating and cooling system. A direct expansion geothermal heat exchang... |
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2003
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Invention
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Geothermal heating and cooling system with solar heating. A sealed well direct expansion geotherm... |
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2002
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Invention
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Sub-surface and optionally accessible direct expansion refrigerant flow regulating device. A sub-... |
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Invention
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Insulated sub-surface liquid line direct expansion heat exchange unit with liquid trap. A direct ... |
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Invention
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Sealed well direct expansion heating and cooling system. A sealed well direct expansion geotherma... |
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Invention
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Thermally exposed, centrally insulated geothermal heat exchange unit. A thermally exposed central... |
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Invention
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Closed loop direct expansion heating and cooling system with auxiliary refrigerant pump. A direct... |
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1997
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Invention
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Mini tube and direct expansion heat exchange system. A direct expansion geothermal heating/coolin... |
