Geothermal Heat Transfer

Patent · Tue Jan 28 04:00:00 EST 1986

OSTI ID:5904435

Basmajian, V V

This patent describes a heat transfer apparatus which consists of: heat exchanging means for orientation in the earth below ground substantially vertically, having a hollow conduit of length from top to bottom much greater than the span across the hollow conduit orthogonal to its length with a top, bottom and an intermediate portion contiguous and communicating with the top and bottom portions for allowing thermally conductive fluid to flow freely between the top, intermediate and bottom portions for immersion in thermally conductive fluid in the region around the heat exchanging means for increasing the heat flow between the latter and earth when inserted into a substantially vertical borehole in the earth with the top portion above the bottom portion. The heat exchanger consists of heat exchanging conduit means in the intermediate portion for carrying refrigerant. The heat exchanging conduit consisting of tubes of thermally conductive material for carrying the refrigerant and extending along the length of the hollow conduit for a tube length that is less than the length of the hollow conduit. The hollow conduit is formed with port means between the top and the plurality of tubes for allowing the thermally conductive fluid to pass in a flow path embracing the tubes, the bottom portion, an outer channel around the hollow conduit and the port means.

• Assignee: Megatech Corp., Billerica, MD
• Patent Number(s): US 4566532
• OSTI ID: 5904435
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150802* -- Geothermal Power Plants-- Power Plant Systems & Components
BOREHOLES
CAVITIES
DESIGN
DIMENSIONS
ENERGY TRANSFER
FLUID FLOW
FLUIDS
GEOTHERMAL POWER PLANTS
HEAT EXCHANGERS
HEAT FLOW
HEAT TRANSFER
LENGTH
PHYSICAL PROPERTIES
POWER PLANTS
REFRIGERANTS
THERMAL CONDUCTIVITY
THERMAL POWER PLANTS
THERMODYNAMIC PROPERTIES
WORKING FLUIDS