Geothermal adiabatic-isothermal heat sink exchange system

摘要

The present invention is a geothermal heat exchanger with a first exchanger, being a return loop inside a geothermal well. The first exchanger is provided for circulating a refrigerant for harvesting heat from the ground surrounding the geothermal well by conduction and convection. A second exchanger, also placed within the geothermal well, is formed from material with high heat transfer coefficient, and also adapted to harvest heat from the ground surrounding the geothermal well by conduction and convection. The first exchanger is completely encased within the second exchanger, and the second exchanger is placed in direct contact with ground surrounding the geothermal well. The outer walls of the first exchanger abut inner walls of the second exchanger along an entire length of the second exchanger. The first exchanger is a copper pipe, and the second exchanger is a housing made of non-ferrous metal with a high thermal diffusivity.

主权项

1. A geothermal exchanger system comprising:
a first exchanger element comprising a return loop placed within a geothermal well, said first exchanger element is provided for circulating a refrigerant adapted to harvest heat from a ground surrounding said geothermal well by means of conduction and convection; a second exchanger element also placed within said geothermal well, said second exchanger element is formed from a material having thermal conductivity up to 150 w/m*k, said second exchanger element is also adapted to harvest heat from the ground surrounding said geothermal well by means of conduction and convection; said first exchanger element is totally encased within said second exchanger element, wherein said second exchanger element is placed in direct contact with the ground surrounding said geothermal well and wherein outer walls of said first exchanger element abut inner walls of said second exchanger element along an entire length of said second exchanger element, wherein said second exchanger element has configuration of a housing, wherein said housing is made of non-ferrous metal having thermal diffusivity up to 80 mm2/sec, wherein said housing consists of a number of segments securely connected to each other by means of joint tubes and wherein each of those segments consists of two identical hollow halves securely connected to each other.