A gravity-assisted heat pipe cooling source cold storage system and chiller set. The cold storage system includes a gravity-assisted heat pipe, a cold storage pool, a heat exchanging and cold condensing device, and a heat exchanger pipe. A lower end of the gravity-assisted heat pipe is arranged in the cold storage pool, and an upper end of the gravity-assisted heat pipe is arranged in the heat exchanging and cold condensing device. The heat exchanger pipe is buried underground, and includes a central pipe and a side pipe. Upper ends of the central pipe and the side pipes are communicated with an inlet and outlet of the heat exchanging and cold condensing device, respectively. Lower ends of the central pipe and the side pipes are communicated with each other. The system employs the heat exchanger pipe to provide a cooling source for the gravity-assisted heat pipe.

A new system for and a method of deploying a heat exchanger pipe. A bore hole is drilled from an access ditch location to a terminal ditch location using a piloted drill head powered via an umbilical attached to the piloted drill head. A casing is attached to the piloted drill head and disposed about the umbilical into the bore hole from the access ditch location to the terminal ditch location. At the terminal ditch location, the piloted drill head is removed from the casing and the umbilical and a heat exchanger pipe is attached to the umbilical. The umbilical is withdrawn from within the casing deployed in the bore hole to pull the heat exchanger pipe into the casing. The casing is then withdrawn from the bore hole leaving the heat exchanger pipe in the bore hole.

The field of the invention relates to systems and methods for exchanging heat from the degradation, decomposition, and chemical/biochemical transformation of municipal, industrial, and other types of waste. In one embodiment, a heat extraction system may include a closed-loop fluid circulation piping channeled throughout at least one heat extraction well oriented throughout a waste mass. The piping is fluidly coupled to a heat exchanger. A first circulation fluid is circulated through the closed-loop circulation piping into various depths of the waste mass to transfer thermal energy between said mass and said heat exchanger. In one embodiment, the transfer of thermal energy between the waste mass and the heat exchanger is used as alternative energy method and to control at least one of shear strength, compressibility, and hydraulic conductivity of the waste mass.

Systems and methods for producing energy from a geothermal formation. A heat exchanger can be disposed within a well to absorb heat from a geothermal formation. The heat exchanger can be supported within the well using a high thermal conductivity material. The heat exchanger is connected to an organic Rankine cycle engine including a secondary heat exchanger and a turbine. The primary and secondary heat transfer fluids are chosen to maximize efficiency of the organic Rankine cycle.

Apparatus, system, and method for controlling molten salt heat exchangers. The system includes a magma-driven heat exchanger that extends at least partially into a magma body containing magma. Molten salt flowing through the magma-driven heat exchanger absorbs heat from the magma to form heated molten salt. A second heat exchanger located externally to the magma-driven heat exchanger uses the heated molten salt to heat a working fluid from a first temperature to a second temperature that is higher than the first temperature. The system also includes a set of fluid conduits defining a flow path that conveys the molten salt between the magma-driven heat exchanger and the second heat exchanger in a loop. Fluid control devices are included for controlling flow of the molten salt through the flow path.

Systems, methods and devices for utilizing an energy chassis device designed to sense, collect, store and distribute energy from where it is available using devices that harvest or convert energy to locations requiring energy such as but not limited to HVAC (heating, ventilation and cooling) systems. The systems, methods and devices can also be used with a next generation geothermal heat exchanger that achieves higher energy harvesting efficiency and provides greater functionality than current geothermal exchangers.

A method and apparatus for recycling unused or suspended wells and areas with predetermined suitability for well installation. In one embodiment, existing unused well sites are repurposed for contact in or adjacent a geothermal zone. Drilling extends horizontally in direct contact with the geothermal zone for heat transfer and subsequently terminates at a newly drilled well. The heated working liquid within the sealed annulus is cooled within a sealed top loop at or below the surface and recirculated for further heat transfer. The closed loop is continuous above and below the geothermal formation and can cluster several such arrangements and also consolidate clusters in a drilling field of unused wells. The loop may be incorporated in areas with predetermined suitability (greenfield) for well installation.

A geothermal heat utilization system includes a heat source well facility, a heat source device having a refrigeration cycle including a compressor, a condenser, an expanded portion, and an evaporator, a primary refrigerant circuit that is connected to a first unit which is one of the condenser and the evaporator of the heat source device, heat exchange being able to be performed between the first unit and the well-side pipe, a secondary refrigerant circuit that is connected to a second unit which is the other of the condenser and the evaporator of the heat source device, heat exchange being able to be performed between the second unit and a load, and a mode switching unit that switches between a cold heat storage operation mode in which the primary refrigerant circuit is connected to the evaporator and the secondary refrigerant circuit is connected to the condenser and a cold heat discharge operation mode in which the primary refrigerant circuit is connected to the condenser and the secondary refrigerant circuit is connected to the evaporator.

An advection based geothermal system is disclosed herein. The system comprises plurality of supply wells (200) situated below the ground level (GL); plurality of geothermal apparatus (300) within each of the supply wells (200); at least one diffusion well (600) for discharge of water received from the enclosure (1300); at least one auxiliary cooling apparatus (2100) within the enclosure (1300); and plurality of heat pumps (1100) connected to the geothermal apparatus (300) & the auxiliary cooling apparatus (2100) to provide cooling & heating within the enclosure (1300).

A geothermal system includes: at least two geothermal holes (1) formed in the ground; a return water circulation tube (10) for returning underground water of the geothermal holes; a water collection and supply well (20) for collecting and then supplying the underground water returned by the return water circulation tube; at least one heat pump (30) for generating heat for cooling and heating, by using, as a heat source, the heat of the underground water supplied by the water collection and supply well; and a supply tube (40) which is an underground water supply means for supplying, to the geothermal holes, the underground water that supplied heat to the heat pump.