The present disclosure relates to an evaporator, including an evaporator case formed in a box shape with both sides open in a manner of bending two case sheets coupled to each other, a cooling tube left as an empty space between the two case sheets to form a cooling passage for a flow of refrigerant, a heating tube left as an empty space between the two case sheets in a non-overlapping manner with the cooling tube, and a heating wire heater inserted into the heating tube to surround the evaporator case, and generating heat, in response to power supplied, such that heat for defrosting is transferred to the evaporator case.

A thermally modulating roof system wherein a climate space between an existing and new roof is occupied by a phase change material assembly. The system maintains an industry standard of no more than a distance of about 4 inches between the roofs while still incorporating a substantial capacity to modulate an otherwise rising temperature of a facility during the day. Unique methods of installing the system, utilizing it and circulating air through the system to enhance performance are detailed. The system may also be of the capacity to modulate an otherwise lowering temperature of the facility during exposure to colder environmental periods or conditions.

Provided is a cooling device including a valve structure including a temperature-responsive material that changes in volume in response to changes in temperature, a supporting structure, which is joined to the valve structure and supports the valve structure, and a solvent which contacts the valve structure, wherein a portion of the solvent contacts the valve structure and another portion of the solvent is externally exposed, the valve structure changes in volume in response to changes in temperature and thereby regulating the externally exposed surface area of the solvent.

A thermoelectric heat pump air conditioner comprising an indoor air conditioner and an outdoor air conditioner. The indoor air conditioner comprises a first phase-change suppressing heat transfer plate, a thermoelectric cooling assembly and a heat exchanger. A first cooling medium pipe and a first thermally superconducting pipe are formed in the first phase-change suppressing heat transfer plate. The first thermal superconducting pipe is filled with a first heat transfer working medium. The heat exchanger is attached on a surface, away from the phase-change suppressing heat transfer plate, of the thermoelectric cooling assembly. A second cooling medium pipe is formed in the heat exchanger. The outdoor air conditioner comprises a second phase-change suppressing heat transfer plate. A third cooling medium pipe and a second thermally superconducting pipe are formed in the second phase-change suppressing heat transfer plate. The second thermally superconducting pipe is filled with a second heat transfer working medium.

A refrigerant evaporator includes a first core, a second core, a first plate, and a second plate. The first core and the second core respectively include a plurality of first tubes and a plurality of second tubes extending along a tube longitudinal direction and stacked along a tube stacking direction. The first plate houses one end portions of the first tubes and the second tubes. The second plate faces the first core and the second core across the first plate and is joined to the first plate in the tube longitudinal direction. The second plate includes a plurality of ribs. The ribs and the first plate define a plurality of intermediate passageways therein. Each of the intermediate passageways allows communication between a corresponding one of the first tubes and a corresponding one of the second tubes.

The multiple panel heat exchanger includes two or more heat exchange panels arranged side-by-side series with their major cross-sectional areas normal to airflow across the heat exchanger. The heat exchange panels are fluidically connected in series and with a first heat exchange panel in the series having a heat exchange fluid inlet into the heat exchanger and a last heat exchange panel in the series having a heat exchange fluid outlet from the heat exchanger. An inlet liquid refrigerant injector and vaporizer has a valve that can control the rate of injection and can close completely. The panels are connected by a pipe assembly containing another valve that can also control the rate of gas refrigerant passage and which can also be closed.

In the present chiller apparatus, a refrigerant flow path is branchably attached to a lower electrode serving as a large sample table, which copes with a case where the surface area of a sample is large in a configuration in which a plasma treatment device connected to a refrigerant cycle equipped with a heating device is applied. A control device transmits a heating adjustment control signal generated based on a result of a PID arithmetic operation including proportion, integration, and differentiation on a lower electrode refrigerant pipe refrigerant detection temperature detected from a temperature sensor provided in the vicinity of a refrigerant flow path of a heat insulating portion relative to the lower electrode of a lower electrode refrigerant pipe connected to be linked to the refrigerant cycle to a heating device and performs feedback control such that the lower electrode refrigerant pipe refrigerant detection temperature becomes a setting temperature.

A heat exchanger comprising a pair of metal plates joined along corresponding mating surfaces, wherein at least one of the metal plates comprises a plurality of connected recesses which form a fluid circuit between the plates when the plates are joined, wherein the fluid circuit comprises an inlet, an inlet manifold, an outlet, an outlet manifold, and a plurality of flowpaths extending between and fluidly connecting the inlet manifold and outlet manifold, and wherein one or more of the plurality of flowpaths comprise a fluid passage and a flow constriction and wherein a ratio of the hydraulic diameter of the flow constriction to the hydraulic diameter of the fluid passage increases with increasing distance from the inlet.

The present disclosure relates to a refrigerator with an improved structure capable of improving cooling efficiency. A refrigerator according to an embodiment of the present disclosure includes a main body; a storage room formed in the main body, wherein a front part of the storage room is opened; a door configured to open or close the opened front part of the storage room; an evaporator installed in a back part of the storage room; an evaporator cover configured to partition the storage room into a storage area and a cool air generating area in which the evaporator is disposed; a first flow path formed between the evaporator and a back surface of the storage room; and a second flow path formed between the evaporator and the evaporator cover.

A refrigerator has a flow path structure formed by a heat-exchanger. The refrigerator includes storage compartments, and a cool air supplying unit provided at a rear of the storage compartments to supply cool air at the storage compartments, and the cool air supplying unit includes a heat-exchanger to divide a flow path at which cool air is provided to flow along the cool air supplying unit.