A thermoelectric power generation device including a thermoelectric element having a first side provided to a heating unit and a second side provided to a cooling unit, and a heat transfer pipe arranged in a passage in which a high temperature fluid flows. The heating unit and the heat transfer pipe have internal spaces communicating with each other. The internal space of the heating unit and the internal space of the heat transfer pipe form a circulation path in which a heat medium is circulated. An outlet of the heat transfer pipe from which the heat medium is discharged is provided in a position higher than an inlet of the heat transfer pipe into which the heat medium flows. The heat transfer pipe vaporizes the heat medium flowing in the circulation path by using heat of the high temperature fluid. The heating unit condenses the heat medium vaporized.

A refrigerant heat exchange apparatus includes an apparatus body, a first communication cavity, a second communication cavity, and first valve cores. A cold water unit and a hot water unit are disposed in the apparatus body. A first water inlet is disposed on the first cavity of the cold water unit. A first water inlet is disposed on the third cavity of the hot water unit. A first water outlet is disposed on the second cavity of the cold water unit. A first water outlet is disposed on the fourth cavity of the hot water unit. The first communication cavity communicates with the first cavity and the third cavity. The second water outlet communicates with the first communication cavity. The second communication cavity communicates with the second cavity and the fourth cavity. An indirect heat pump system includes the refrigerant heat exchange apparatus.

An electronic expansion valve and a thermal management assembly. The electronic expansion valve has a valve port and a valve core. A valve body includes a first flow portion, a second flow portion, a first cavity and a second cavity. The first flow portion comprises a first connection section and a first subsection, and the first subsection is directly in communication with the first cavity. The second flow portion comprises a second connection section and a second subsection, and the second subsection is directly in communication with the second cavity. In a clockwise direction, an angle formed between at least one of the center line of the first subsection and the center line of the second subsection and the center line of the valve core is an acute angle.

Embodiments of the present disclosure relate to a vapor compression system that includes a refrigerant loop, a compressor disposed along the refrigerant loop and configured to circulate refrigerant through the refrigerant loop, and a heat exchanger disposed along the refrigerant loop and configured to place the refrigerant in a heat exchange relationship with a cooling fluid. The heat exchanger includes a water box portion having a first length, a shell having a second length, a plurality of tubes disposed in the shell and configured to flow the cooling fluid, and a cooling fluid portion having a third length, where the water box portion and the cooling fluid portion are coupled to the shell, such that the first length, the second length, and the third length form a combined length of the heat exchanger that is substantially equal to a target length.

Embodiments of the present disclosure are directed to a heat exchanger system that includes a conduit configured to flow a working fluid therethrough, where the conduit has a first portion, a second portion, and a bend directly coupling the first portion and the second portion, where the first portion includes a first header connection, the second portion includes a second header connection, and the bend is distal to the first header connection and the second header connection and a support plate coupled to the bend and positioned between the first portion and the second portion of the conduit.

An active gas regenerative refrigerator includes a plurality of compressor-expander units, each having a hermetic cylinder with a drive piston configured to be driven reciprocally therein, and a quantity of working fluid in each end of the cylinder. A piston seal in a central portion of the cylinder prevents passage of the working fluid between ends of the cylinder. Movement of the piston to a first extreme results in radial compression of one of the quantities of working fluid in a cylindrical gap formed between one end of the piston and an inner surface of the cylinder, while the other quantity is expanded in the opposite end of the cylinder. The piston includes a plurality of magnets arranged in pairs, with magnets of each pair positioned with like-poles facing each other. A piston drive is configured to couple with transverse magnetic flux regions formed by the magnets.

A valve arrangement according to the present disclosure includes a valve module and a drain valve. The valve module includes first and second functional spaces, and an attachment interface defining a passage into one of the first or second functional spaces. The drain valve includes a fluid inlet and a fluid outlet formed through a common connector part that is connectable to the attachment interface to connect the fluid inlet of the drain valve to the second functional space and the at least one fluid outlet to the first functional space.

A corrugated fin heat exchanger includes: a first flat tube; a second flat tube aligned in parallel with the first flat tube; and a corrugated fin disposed between the first flat tube and the second flat tube, and the corrugated fin includes a first slant portion bridging between the first flat tube and the second flat tube and inclined relative to a perpendicular line toward the first flat tube at a first angle of inclination, a second slant portion bridging between the first flat tube and the second flat tube and inclined relative to the perpendicular line at a second angle of inclination, and a third slant portion bridging between the first flat tube and the second flat tube, the third slant portion positioned between the first slant portion and the second slant portion, and inclined relative to the perpendicular line at an angle of inclination larger than both of the first angle of inclination and the second angle of inclination.

Apparatuses, systems, and methods are disclosed to prime a refrigerant pump by decoupling the condenser from the refrigerant pump and the refrigerant pump line or shielding from a condenser operation prior to startup of the system, so that liquid refrigerant can be appropriately sourced from the condenser and/or the evaporator using flow control device(s) such as a source valve on a source line of the condenser and/or on a source line of the evaporator and the control of such valve(s).

A heat source unit for a refrigeration apparatus includes: a refrigerant circuit including a shut-off valve, a compressor, a heat exchanger, and a first refrigerant pipe positioned between the shut-off valve and the compressor; a fan that sends air to the heat exchanger; a casing that includes a side panel and that accommodates the refrigerant circuit and the fan; and a partitioning panel that partitions an internal space of the casing into a first space on the side panel side where the compressor is disposed, and a second space where the fan is disposed. The fan blows the air that has passed through the heat exchanger out to a front-surface side of the casing. The compressor, the shut-off valve, and the side panel are disposed in the stated order as the compressor, the shut-off valve, and the side panel as seen in a front view.