A projector a cooler configured to cool a cooling target based on transformation of a refrigerant into a gas. The cooler includes a refrigerant generator configured to generate the refrigerant and a refrigerant sender configured to send the generated refrigerant toward the cooling target. The refrigerant generator includes a moisture absorbing/discharging member, a first air blower configured to deliver air outside the projector to the moisture absorbing/discharging member, a heat exchanger connected to the refrigerant sender, a heater configured to heat the moisture absorbing/discharging member, and a second air blower configured to deliver, to the heat exchanger, air around a portion of the moisture absorbing/discharging member that is the portion heated by the heater. The heat exchanger, by cooling the air having flowed into the heat exchanger, generates the refrigerant from the air having flowed into the heat exchanger. The moisture absorbing/discharging member is fixed.

An air-conditioning system is provided for a motor vehicle. That system includes a vacuum enclosure having a refrigerant, a first section and a second section. The system further includes a radiator, a core and a phase change material vessel downstream from the core. A conduit and valve system operate the air-conditioning system in two modes of operation.

Heat regenerators and related methods enable heat transfer in an embedded structure of a heat regenerator. The heat regenerators enable a reduction of the pressure drop due to fluid flow through the heat regenerator and consequently an increase of power density. A heat regenerator includes a housing having a primary hot heat exchanger and a primary cold heat exchanger between elements for the oscillation of a primary fluid. The secondary fluid unidirectionally flows from the heat sink into the primary cold heat exchanger. The secondary fluid exits from the primary cold heat exchanger and unidirectionally flows towards the heat source. The secondary fluid S enters the primary hot heat exchanger and exits as the unidirectional flow of the secondary fluid S of the primary hot heat exchanger towards the heat sink. Between both primary heat exchangers, the porous regenerative material is positioned as part of the regenerator.

Heat regenerators and related methods enable heat transfer in an embedded structure of a heat regenerator. The heat regenerators enable a reduction of the pressure drop due to fluid flow through the heat regenerator and consequently an increase of power density. A heat regenerator includes a housing having a primary hot heat exchanger and a primary cold heat exchanger between elements for the oscillation of a primary fluid. The secondary fluid unidirectionally flows from the heat sink into the primary cold heat exchanger. The secondary fluid exits from the primary cold heat exchanger and unidirectionally flows towards the heat source. The secondary fluid S enters the primary hot heat exchanger and exits as the unidirectional flow of the secondary fluid S of the primary hot heat exchanger towards the heat sink. Between both primary heat exchangers, the porous regenerative material is positioned as part of the regenerator.

An energy supply system recycling data center waste heat comprises: a cooling system recycling data center waste heat, the cooling system recycling a high-temperature coolant outputted by a data center, and transferring heat of the high-temperature coolant to an absorption refrigerator using a heat exchanger, to enable the absorption refrigerator to absorb the heat of the high-temperature coolant and make the heat into cold for cooling a to-be-cooled apparatus; and a heat supply system recycling data center waste heat, the heat supply system recycling the high-temperature coolant outputted by the data center, and transferring the heat of the high-temperature coolant to a to-be-heated apparatus using the heat exchanger; where the data center comprises a plurality of liquid cooled cabinets, the liquid cooled cabinets absorbing heat of the data center to generate the high-temperature coolant.

An energy supply system recycling data center waste heat comprises: a cooling system recycling data center waste heat, the cooling system recycling a high-temperature coolant outputted by a data center, and transferring heat of the high-temperature coolant to an absorption refrigerator using a heat exchanger, to enable the absorption refrigerator to absorb the heat of the high-temperature coolant and make the heat into cold for cooling a to-be-cooled apparatus; and a heat supply system recycling data center waste heat, the heat supply system recycling the high-temperature coolant outputted by the data center, and transferring the heat of the high-temperature coolant to a to-be-heated apparatus using the heat exchanger; where the data center comprises a plurality of liquid cooled cabinets, the liquid cooled cabinets absorbing heat of the data center to generate the high-temperature coolant.

An air-conditioning system is provided for a motor vehicle. That system includes a vacuum enclosure having a refrigerant, a first section and a second section. The system further includes a radiator, a core and a phase change material vessel downstream from the core. A conduit and valve system operate the air-conditioning system in two modes of operation.

A heating, ventilation, air conditioning and refrigeration (HVAC/R) system includes a sorption circuit including a heat absorption heat exchanger in fluid communication with a primary fluid flow source such that a primary fluid flow from is directed therethrough. The heat absorption heat exchanger is configured to exchange thermal energy between the primary fluid flow and a secondary fluid flow. A sorption heat exchanger includes a sorbent material to adsorb or absorb the primary fluid flow, generating thermal energy. The sorption heat exchanger is configured to transfer the generated thermal energy to a tertiary fluid flow. A heat exchange circuit is in fluid communication with the sorption circuit and includes a control valves connected to both the secondary fluid flow and the tertiary fluid flow configured to selectably direct the secondary fluid flow and/or the tertiary fluid flow to a conditioning heat exchanger or an ambient heat exchanger.

A heating, ventilation, air conditioning and refrigeration (HVAC/R) system includes a sorption circuit including a heat absorption heat exchanger in fluid communication with a primary fluid flow source such that a primary fluid flow from is directed therethrough. The heat absorption heat exchanger is configured to exchange thermal energy between the primary fluid flow and a secondary fluid flow. A sorption heat exchanger includes a sorbent material to adsorb or absorb the primary fluid flow, generating thermal energy. The sorption heat exchanger is configured to transfer the generated thermal energy to a tertiary fluid flow. A heat exchange circuit is in fluid communication with the sorption circuit and includes a control valves connected to both the secondary fluid flow and the tertiary fluid flow configured to selectably direct the secondary fluid flow and/or the tertiary fluid flow to a conditioning heat exchanger or an ambient heat exchanger.

An absorption cycle (110) according to the present invention is configured to operate using: a refrigerant having a global warming potential of less than 1000, and including at least one of an HFO-based refrigerant, an HFC-based refrigerant, and an HCFO-based refrigerant; and an absorbing liquid including at least one compound represented by Formulas (1), (2), and (3): R.sup.1(OCH.sub.2CH.sub.2).sub.nOR.sup.2 (1) R.sup.1(OCH.sub.2CH(CH.sub.3)).sub.nOR.sup.2 (2) R.sup.1COO(OCH.sub.2CH.sub.2).sub.nOR.sup.2 (3) where R.sup.1 and R.sup.2 are each independently a hydrogen atom or an alkyl group having a carbon number of 1 or more and 6 or less, and n is an integer of 1 or more and 6 or less.