Wellbore heat loop systems, fillers for bores in the systems, and methods of the use of such systems; the systems in certain aspects having a heat loop wellbore in the earth having heat loop pipe extending down to one side of a bottom member and up therefrom on another side thereof, the bottom member in certain aspects having a body with first and second bores therethrough, the second bore sized and configured for securement thereat of an end of coil tubing; and, in certain aspects, filler material around the heat loop in the wellbore with a gel material mixed with the water.
RELATED APPLICATION
This is a continuation-in-part of U.S. application Ser. No. 09/930,385 filed Aug. 15, 2001, issued as U.S. Pat. No. 6,585,036B2 on Jul. 1, 2003 which is a continuation-in-part of U.S. application Ser. No. 09/459,416 filed Dec. 12, 1999 now U.S. Pat. No. 6,250,371 entitled "Energy Transfer Systems" which is a continuation-in-part of U.S. application Ser. No. 09/237,754 filed Jan. 26, 1999 now U.S. Pat. No. 6,672,371 entitled "Earth Heat Exchange System" which is a continuation-in-part of U.S. Ser. No. 09/087,705 filed Jun. 1, 1998 now U.S. Pat. No. 6,041,862 which is a continuation-in-part of U.S. application Ser. No. 08/779,812 filed Jan. 6, 1997 entitled "Underground Heat Exchange System" issued as U.S. Pat. No. 5,758,224, on Jun. 2, 1998 which is a division of U.S. application Ser. No. 08/527,114 filed Sep. 12, 1995 entitled "Underground Heat Exchange System" issued Jan. 7, 1997 as U.S. Pat. No. 5,590,715, all said patents and applications co-owned with the present invention and fully incorporated herein for all purposes.
A heat and cooling system having an indoor air coil subcircuit, an outdoor air coil subcircuit, a geothermal subcircuit, and a control system for selectively operating the system in air-to-air heating, air-to-air cooling, geothermal heating, air-to-air defrost (optionally) and geothermal defrost modes. The various subcircuits may be connected to one another in parallel. The heating and cooling system may include a control system that permits refrigerant to be selectively routed through any two of the heat exchangers to provide the various modes of operation. In one embodiment, the control system may generally include a circuit having a single reversing valve, a plurality of check valves, a plurality of solenoid valves and a plurality of expansion devices.
A method of forming an energy transfer loop in the earth has the steps of connecting a tubing to a nose member, extending a liquid delivery pipe to the nose member, pumping a liquid through the liquid delivery pipe to the nose member, jetting the liquid from the nose member so as to form an excavation in the earth and pushing the nose member downwardly through the opening in the earth a desired distance below a surface of the earth. A jacket can be affixed around the liquid delivery pipe so as to allow the liquid delivery pipe to be removed from the nose member subsequent to the installation in the earth.
