A system and method of thermal energy storage and transfer that incorporate an underground thermal energy storage unit with horizontally arrayed heat exchangers surrounded by aggregate. The aggregate, composed of porous or semi-porous materials such as sand, soil, or crushed rock, may be moistened (10%-35% water by weight) to enhance thermal energy storage and insulated with a layer of dry aggregate shielded by waterproof materials. The system integrates components such as a heat pump, a thermal energy processing unit (e.g., a dry cooler or solar thermal array), and fluid interconnections including pumps and valves, thus allowing energy transfer between components. Horizontally arrayed heat exchangers, which may feature a spiral pipe or a slinky design to enable thermal energy distribution by directing heated fluid to central connections, optimizing heat retention.

A system and method of thermal energy storage and transfer are disclosed. The system and method incorporate an underground thermal energy storage unit with horizontally arrayed heat exchangers surrounded by aggregate. The aggregate, composed of porous or semi-porous materials such as sand, soil, or crushed rock, may be moistened (10%-35% water by weight) to enhance thermal energy storage and insulated with a layer of dry aggregate shielded by waterproof materials. The system integrates components such as a heat pump, a thermal energy processing unit (e.g., a dry cooler or solar thermal array), and fluid interconnections including pumps and valves, allowing flexible energy transfer between components. Horizontally arrayed heat exchangers, which may feature spiral pipe or slinky designs, enable efficient thermal energy distribution by directing heated fluid to central connections, optimizing heat retention. The system supports versatile energy storage for heating and cooling, with enhanced performance through moisture and insulation control.

Cooling device 1, in particular a freezer 2, having a closable cooling space 3, an electrically operated cooling circuit, and preferably a cold storage pack 4, wherein the at least one closable cooling space 3 and the cold storage pack 4 can be cooled by the electrically operated cooling circuit. The cooling device has a power distributor 5 for distributing electrical power of at least one regenerative power source 6 to an electrically operated cooling circuit of the cooling device 1 and to at least one further electricity consuming device 7. In addition, the power distributor 5 has a control system with a computing unit 23, a memory 24 and priority logic. The priority logic is used to preferentially supply the electrically operated cooling circuit of the cooling device 1 with electricity if there is a lack of electrical power of the at least one regenerative power source 6.

The systems of the present disclosure include a solar-powered steam Rankine cycle (SRC) subsystem to convert solar energy into thermal energy and store the thermal energy; an ejector refrigeration cycle (ERC) subsystem to provide a first refrigeration effect with a first range of temperature based on the thermal energy; an absorption refrigeration cycle (ARC) subsystem to provide a second refrigeration effect with a second range of temperature based on the thermal energy; a brine refrigeration cycle (BRC) subsystem to generate and store when there is no cooling demand and provide a third refrigeration effect with a third range of temperature based on the electrical power generated by the ERC subsystem and the ice being melted; and an adsorption refrigeration cycle (ADRC) subsystem to provide a fourth refrigeration effect with a fourth range of temperature based on the thermal energy.

The invention relates to a cooling system including a cooling chamber, a rotary compressor for pressurising a refrigerant, a condenser, an expander configured to expand the refrigerant, and at least one evaporator operatively connected to the cooling chamber to absorb heat from the cooling chamber. The cooling system further includes a Stirling motor configured to rotatably drive the rotary compressor. The Stirling motor includes an expansion space in which at least one working medium is expandable and a first piston which is movably arranged in the expansion space. The Stirling motor is configured to cooperate with at least one heat source to expand the working medium and drive the first piston to rotatably drive the driveshaft. The invention further includes a solar energy capturing device and a solar tracking device.

A portable electric cooler for providing ice-free refrigeration of items is disclosed. The cooler includes an insulated, durable body with rotatable wheels at the base thereof for maneuverability on different surfaces. The cooler has at least one solar panel for converting solar energy into electric power. A refrigeration area is adapted to provide cooling to items and is accessible via a hinged lid. The refrigeration area can provide 48 hours of refrigeration without ice or outlet power supply. A long pivoting handle is disposed for easy transportation, a plurality of LEDs provides visibility and aesthetic appeal, and at least one accessory plug is included for providing electric power to accessories. An internal rechargeable battery provides electric power to the cooler and connected accessories. The cooler is equipped with a temperature control module, a voltage regulator, and an integrated Bluetooth speaker for audio entertainment.

The systems of the present disclosure include a solar-powered steam Rankine cycle (SRC) subsystem to convert solar energy into thermal energy and store the thermal energy; an ejector refrigeration cycle (ERC) subsystem to provide a first refrigeration effect with a first range of temperature based on the thermal energy; an absorption refrigeration cycle (ARC) subsystem to provide a second refrigeration effect with a second range of temperature based on the thermal energy; a brine refrigeration cycle (BRC) subsystem to generate and store when there is no cooling demand and provide a third refrigeration effect with a third range of temperature based on the electrical power generated by the ERC subsystem and the ice being melted; and an adsorption refrigeration cycle (ADRC) subsystem to provide a fourth refrigeration effect with a fourth range of temperature based on the thermal energy.

The present disclosure includes a system for pre-cooling produce or other goods while transporting goods that includes a plurality of refrigerated containers that are electrically connected with one other to share power between the containers. In some aspects, each refrigerated container includes a plurality of photovoltaic panels, a battery configured to receive electrical power from the plurality of photovoltaic panels, and a refrigerator configured to cool a cavity of the container. In some aspects, the system includes an energy distribution system configured to determine a power level of the batteries for each container and, based on the power level, transfer power to or from the batteries.

The systems of the present disclosure include a solar-powered steam Rankine cycle (SRC) subsystem to convert solar energy into thermal energy and store the thermal energy; an ejector refrigeration cycle (ERC) subsystem to provide a first refrigeration effect with a first range of temperature based on the thermal energy; an absorption refrigeration cycle (ARC) subsystem to provide a second refrigeration effect with a second range of temperature based on the thermal energy; a brine refrigeration cycle (BRC) subsystem to generate and store when there is no cooling demand and provide a third refrigeration effect with a third range of temperature based on the electrical power generated by the ERC subsystem and the ice being melted; and an adsorption refrigeration cycle (ADRC) subsystem to provide a fourth refrigeration effect with a fourth range of temperature based on the thermal energy.

Battery powered hybrid reefers that use for their driving force, energy derived from the best-mix integrated combination of electrical power generated from an internal combustion engine generator, an electric grid, a wheel driven generator and at least one solar panel.