Multi-Faceted Designs for a Direct Exchange Geothermal Heating/Cooling System
AssigneeEarth to Air Systems, LLC
InventorB. Ryland Wiggs
Life of this patent
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Abstract
A direct exchange heating/cooling system with at least one of a reduced compressor size, with a 500 psi high pressure cut-off switch, with a 98% efficient oil separator, with extra oil, operating at a higher pressure than an R-22 system, with receiver design parameters for efficiency and fox capacity, with geothermal heat exchange line set design parameters, with special heating/cooling expansion device sizing and design, with a specially sized air handler, and with a vapor line pre-heater.
Claims19
A direct exchange geothermal heating/cooling system comprising:
- a geothermal heat exchange field;
- refrigerant transport lines including a liquid refrigerant transport line and a vapor refrigerant transport line;
- a compressor sized between 80% and 95% of a maximum heating/cooling load;
- expansion devices;
- a heat exchanger;
- an oil separator having a filter configured to separate a particle size no greater than approximately 0.3 microns and to provide at least approximately 98% efficiency;
- a refrigerant having an operating pressure at least 25% greater than R-22;
- a high pressure cut-off switch operably coupled to the compressor and configured to shut off the compressor when the operational system pressure reaches approximately 500 psi, plus or minus approximately 25 psi;
- and
- wherein each component of the system has at least a 25% greater safe working load strength than a safe working load strength of components in an R-22 refrigerant system.
A direct exchange geothermal heating/cooling system, comprised of refrigerant transport lines, a compressor, expansion devices, and heat exchangers, wherein:
- the system is operating in the heating mode, with a vapor line pre-heater that would be comprised of a heat exchanger situated between the warm, mostly liquid, refrigerant transport line exiting the system's interior air handler, at a location before the refrigerant flow reaches the heating mode expansion device, and the refrigerant vapor transport line exiting the geothermal heat exchange means, before the refrigerant flow exiting the geothermal heat exchange means entered the system's compressor, which vapor line pre-heater would be by-passed and not utilized in the cooling mode
Dependencies are inferred from the claim text.