A system includes an evacuated tube solar adsorption heat pump (ETSAHP) module. The ETSAHP module includes a transparent or semi-transparent tube configured to receive heat input from solar energy, the tube having a hollow interior, a top section, and a bottom section opposite the top section, an adsorbent bed comprising a plurality of adsorbent beads and positioned at the top section of the tube and configured to absorb solar energy, an adsorbent bed cage configured to contain the adsorbent bed at the top section of the tube, a threshold configured to stabilize the adsorbent container within the tube, and a condenser/evaporator positioned at the bottom section of the tube and spaced apart from the adsorbent bed.

Recent progress in passive radiative cooling technologies have significantly improved cooling performance under direct sunlight. Performance of existing passive radiative coolers for air conditioning and portable refrigeration applications can be improved with a material that is solar reflective and infrared transparent that can also have a low thermal conductivity.

The solar augmented chilled-water cooling system comprises a refrigeration cycle, a cooling tower, an air handling unit (AHU), a supplemental cycle and a solar energy harvesting unit. The supplemental cycle is in fluid communication with the refrigeration cycle, which is in fluid communication with the cooling tower, which in turn is in fluid communication with the supplemental cycle. The cooling tower cools a water stream by evaporation. The water stream from the cooling tower is passed to the supplemental cycle for further cooling using energy from the solar energy harvesting unit. The water stream is then passed to a condenser of the refrigeration cycle for its efficient operation at proper temperature. The water stream is then retuned back to the cooling tower to be re-cooled. In the refrigeration cycle, an evaporator uses operation of the associated condenser for providing cooling effect through the AHU.

The integrated solar absorption heat pump system includes an absorption heat pump assembly (AHPA) having a generator, a condenser in fluid communication with the generator, an evaporator/absorber in fluid communication with the condenser and the generator, and a heat exchanger in communicating relation with the evaporator/absorber; a solar collector in fluid communication with the generator of the AHPA; a photovoltaic thermal collector in communicating relation with the evaporator/absorber of the AHPA; a plurality of pumps configured for pumping a fluid throughout the system to provide the desired heating or cooling; a power storage source, e.g., a solar battery, in communicating relation with the photovoltaic thermal collector; and a coil unit in communicating relation to the evaporator/absorber for receiving an air-stream. The absorption heat pump assembly can include an absorber and a solution heat exchanger.

The integrated solar absorption heat pump system includes an absorption heat pump assembly (AHPA) having a generator, a condenser in fluid communication with the generator, an evaporator/absorber in fluid communication with the condenser and the generator, and a heat exchanger in communicating relation with the evaporator/absorber; a solar collector in fluid communication with the generator of the AHPA; a photovoltaic thermal collector in communicating relation with the evaporator/absorber of the AHPA; a plurality of pumps configured for pumping a fluid throughout the system to provide the desired heating or cooling; a power storage source, e.g., a solar battery, in communicating relation with the photovoltaic thermal collector; and a coil unit in communicating relation to the evaporator/absorber for receiving an air-stream. The absorption heat pump assembly can include an absorber and a solution heat exchanger.

A solar-powered two-bed adsorption chiller which can operate after sunset when the solar radiation intensity becomes zero. Rechargeable solar-powered batteries (SPBs) are connected to a flat-plate solar collector (FPSC). The photoelectric charges are directed from FPSC to a solar charge controller (SCC) which acts as a charge amplifier thus magnifying the total charge before it is finally collected inside the SPB for future use. The SPB is in turn connected to a resistance heating wire (RHW) which is immersed inside the HWST.

The present disclosure relates to a vehicle refrigerator, which comprises a body, a refrigerating system and a driving system; the refrigerating system and the driving system are both arranged in the body; the body is removable in a trunk of a vehicle; the driving system is used for driving the refrigerating system to operate normally and comprises an igniter, an air course and an air source, and the igniter is connected with the air source through the air course; and the refrigerating system is used for cooling an inner cavity of the body and is provided with a working medium capable of changing gas and liquid.

The present disclosure relates to a refrigerating device, which comprises a condenser, an evaporator, a generator, a recovery tank, a return pipeline and an air pipe. A working medium capable of changing in gas and liquid circulates in the condenser, the evaporator and the generator to cool air in the air pipe. The two ends of the air pipe are extended into a storage area to provide sufficient cold air for the air pipe and ensure an indoor temperature of the storage area.

Some aspects of the invention provide an air cooling system. The air cooling system may include a solar energy gathering component that drives a cooling system. The air cooling system may include an absorption cooling system or a thermoelectric cooling system. The cooling system may include a solar collector matched with an air venting system. The cooling unit may hang on the inside of a window or on another vertical surface and utilize the heat and/or radiation from the sun to activate a cooling mechanism that, in turn, provides cooling via the cooling system.

A microwave-assisted hybrid solar vapor absorption system that converts anergy into exergy and works sustainably without the intermittence associated with the single absorption vapor absorption systems. The heat required for the generator in a vapor absorption system is provided by preheating the water through solar collectors and by using the vehicle's waste heat in conjunction with solar heat, collecting the waste heat and the solar heat into circulating water or other thermal fluids like mineral oil through the vehicle's radiator, the vehicle's exhaust pipe, and a solar collector. By combining the waste heat and the solar heat, the system achieves the required generator temperature. By introducing dielectric heating and by differentially heating only the refrigerant fluid, and not the absorbent fluid, the required pressure for refrigeration is achieved, while allowing the absorbent fluid to remain significantly cooler than the refrigerant. This increases the Coefficient of Performance to 0.95.