Downhole heat exchanger

Drilling process for a Downhole heat exchanger. Furled tube in the foreground on the left.
Bottom end of a Downhole heat exchanger
Top end of a Downhole heat exchanger

A downhole heat exchanger, (DHE) also called a borehole heat exchanger, (BHE) is a heat exchanger installed inside a vertical or inclined borehole.[1] It is used to capture or dissipate heat to or from the ground. DHT's are used for geothermal heating, sometimes with the help of a geothermal heat pump. Downhole heat exchangers, like other use of geothermal energy, have the potential to significantly contribute to the reduction of CO2 emissions.[2] In northern Europe, DHE are already widely deployed.[3]

  1. ^ "Downhole Heat Exchangers" (PDF). Geo-Heat Center - Oregon Institute of Technology. Retrieved 21 April 2013.
  2. ^ "Geothermal Energy - Professur für Geothermal Technologies". www.bgu.tum.de. Retrieved 2021-01-15.
  3. ^ https://www.mbie.govt.nz/assets/14861fe5a3/geothermal-barriers-update-1.pdf [bare URL PDF]