US 12,404,769 B1
Heat recovery arrangement
Chris Salvino, Scottsdale, AZ (US); Drew DeJarnette, San Diego, CA (US); and Paul A Beatty, Fort Collins, CO (US)
Assigned to LUNAR HELIUM-3 MINING, LLC, Scottsdale, AZ (US)
Filed by LUNAR HELIUM-3 MINING, LLC, Scottsdale, AZ (US)
Filed on Mar. 13, 2025, as Appl. No. 19/079,201.
Application 19/079,201 is a continuation in part of application No. 18/798,615, filed on Aug. 8, 2024.
Int. Cl. E21C 51/00 (2006.01); B64G 1/16 (2006.01); F24S 20/00 (2018.01); F24S 23/70 (2018.01); F24S 23/71 (2018.01); F24S 80/20 (2018.01)
CPC E21C 51/00 (2013.01) [B64G 1/16 (2013.01); F24S 20/00 (2018.05); F24S 23/71 (2018.05); F24S 2023/878 (2018.05); F24S 80/20 (2018.05)] 20 Claims
OG exemplary drawing
 
1. A heat recovery arrangement comprising:
a rover defining a rover front end and a rover rear end, wherein the rover is configured to travel in a direction leading with the rover front end;
both a preheat contact element and a heat recovery sled configured to rest atop granular soil;
a gap spacing apart the preheat contact element from the heat recovery sled, wherein the preheat contact element is closer to the rover front end than the heat recovery sled;
a primary heat source configured to heat the granular soil in the gap;
a gas collecting shield covering at least the gap; and
a heat exchange tube comprising a feed line, a return line, a heat collecting coil, and a heat emitting coil, wherein;
the feed line is configured to flow heated medium from the heat collecting coil to the to the heat emitting coil,
the return line is configured to flow cooled medium from the heat emitting coil to the heat collecting coil,
the heat recovery sled contains the heat collecting coil and the preheat contact element contains the heat emitting coil, and
the gas collecting shield, the preheat contact element and the heat recovery sled are located under the rover.