A caloric heat pump includes a plurality of elasto-caloric stages. The plurality of elasto-caloric stages is distributed between along an axial direction within a chamber of a housing. Each elasto-caloric stage includes a hub, a rim and a plurality of elasto-caloric spokes. The plurality of elasto-caloric spokes extend between the hub and the rim along a radial direction. The plurality of elasto-caloric stages is rotatable about the axial direction.

A caloric heat pump includes a plurality of elasto-caloric stages. The plurality of elasto-caloric stages is distributed between along an axial direction within a chamber of a housing. Each elasto-caloric stage includes a hub, a rim and a plurality of elasto-caloric spokes. The plurality of elasto-caloric spokes extend between the hub and the rim along a radial direction. The plurality of elasto-caloric stages is rotatable about the axial direction.

A cooling system based on thermoelastic effect is provided. The system comprises a heat sink, a refrigerated space and a regenerator coupled to the refrigerated space and to the heat sink to pump heat from the refrigerated space to the heat sink. The regenerator comprises solid thermoelastic refrigerant materials capable of absorbing or releasing heat.

A cooling system based on thermoelastic effect is provided. The system comprises a heat sink, a refrigerated space and a regenerator coupled to the refrigerated space and to the heat sink to pump heat from the refrigerated space to the heat sink. The regenerator comprises solid thermoelastic refrigerant materials capable of absorbing or releasing heat.

A passive heat recovery or defrosting apparatus features an evaporator, a condenser, and vapour and liquid conveyance lines connected therebetween. The vapour and liquid conveyance lines respectively connect to upper and lower ends of the evaporator and condenser. The evaporator and/or condenser has a ring-shaped body for fitting around or inline with a pipe to achieve heat exchange relation with a fluid passing therethrough. The evaporator is installed on or inside a warm pipe or duct (e.g. waste drain pipe, clothes dryer exhaust duct, flue pipe, or indoor section of a sewer vent stack) at a lower elevation than the condenser. The condenser is placed on an outdoor end of either a sewer stack or air intake duct for defrosting purposes, or is placed on a water supply line or air intake of a hot water tank, clothes dryer, etc. Working fluid circulates passively between the evaporator and condenser.

The present invention consists of a method for producing heat transfer between two or more media and a device or system for carry out said method, usable for air conditioning a space, or any use that requires heat transfer between two or more media, and may be liable to be used for domestic, commercial or industrial use.

A fluid chiller includes a tubular coil enclosed within a vacuum housing which is partially filled with a coolant and an atmosphere with the vacuum housing connected to a vacuum source. A valve selectively connects the vacuum source to the vacuum housing to allow selective reduction of the pressure within the vacuum housing to obtain a reduction of temperature of the coolant therein. A conventional, compressor type refrigeration system may be connected to the vacuum housing for chilling the vacuum housing and the atmosphere and coolant therein to an initial temperature, prior to applying a vacuum to the vacuum housing for further temperature reduction. A fluid, which may be a secondary coolant, flows through the tubular coil at least partially immersed in the coolant to cool the secondary coolant. The secondary coolant is used to cool a heat load.

A fluid chiller includes a tubular coil enclosed within a vacuum housing which is partially filled with a coolant and an atmosphere with the vacuum housing connected to a vacuum source. A valve selectively connects the vacuum source to the vacuum housing to allow selective reduction of the pressure within the vacuum housing to obtain a reduction of temperature of the coolant therein. A conventional, compressor type refrigeration system may be connected to the vacuum housing for chilling the vacuum housing and the atmosphere and coolant therein to an initial temperature, prior to applying a vacuum to the vacuum housing for further temperature reduction. A fluid, which may be a secondary coolant, flows through the tubular coil at least partially immersed in the coolant to cool the secondary coolant. The secondary coolant is used to cool a heat load.

An electrochemical climate control system circulates a working fluid comprising ammonia (NH.sub.3) and hydrogen (H.sub.2). An evaporator volatilizes liquid ammonia for a refrigeration effect. An electrochemical device can increase a total pressure of the working fluid and/or a first partial pressure of ammonia and decrease a second partial pressure of hydrogen when an f is applied. A condenser cools the working fluid/transforms ammonia to a liquid. A separator separates liquid ammonia from gas phase hydrogen. A heat exchanger may be provided downstream of the evaporator. The system may include an ejector combining vapor phase ammonia and gas phase hydrogen in a pressurized stream. A second electrochemical device is optionally included that decreases a pressure of gas phase hydrogen exiting the separator and which generates electrical potential that is transferred to the first electrochemical device. Such high efficiency systems may be free of any mechanical pumps or moving parts.

An electrochemical climate control system circulates a working fluid comprising ammonia (NH.sub.3) and hydrogen (H.sub.2). An evaporator volatilizes liquid ammonia for a refrigeration effect. An electrochemical device can increase a total pressure of the working fluid and/or a first partial pressure of ammonia and decrease a second partial pressure of hydrogen when an f is applied. A condenser cools the working fluid/transforms ammonia to a liquid. A separator separates liquid ammonia from gas phase hydrogen. A heat exchanger may be provided downstream of the evaporator. The system may include an ejector combining vapor phase ammonia and gas phase hydrogen in a pressurized stream. A second electrochemical device is optionally included that decreases a pressure of gas phase hydrogen exiting the separator and which generates electrical potential that is transferred to the first electrochemical device. Such high efficiency systems may be free of any mechanical pumps or moving parts.