Abstract: A refrigerant distribution and charge balancing system for a heat exchanger and heat pump is disclosed. The system comprises an auxiliary header that is adapted to be fluidically coupled to a first header of the heat exchanger using one or more tube stubs. The auxiliary header is configured at a predefined distance from the first header. The auxiliary header is adapted to be fluidically coupled to a supply tube associated with a refrigerant line of the heat exchanger.

Abstract: Described herein is a fluid distributor assembly for a heat exchanger. The assembly comprises a first casing, a second casing configured to be removably attached to the first casing such that a header is formed having an enclosed space therewithin, and a plurality of fluid distributors configured to be removably accommodated on one or more of the first casing and the second casing, wherein at least two fluid distributors among the plurality of fluid distributors have different distribution configurations, wherein the first casing and the second casing are attached to secure the accommodated distributors within the formed header.

Abstract: The disclosure provides a method for protecting a tube of a heat exchanger. The method includes inserting at least one portion of a non-ferrous tube into a hole of a tube sheet of the heat exchanger. The at least one portion of the non-ferrous tube is then rolled to radially expand the at least one portion. The at least one portion expands and forms a seal with the hole. A sleeve is then affixed onto an inner surface corresponding to the at least one portion of the non-ferrous tube.

Abstract: A compensator for an indoor unit of a reversible heat pump is disclosed. The compensator comprises a conduit of a predefined profile having a first end, and a second end. The first end of the conduit is adapted to be fluidically coupled to a thermal expansion device and a primary header of the indoor unit, such that the conduit remains above a connection point between the conduit, the thermal expansion device, and the primary header. The compensator is configured outside the indoor unit in one or more configurations. The compensator stores excess charge created between heating and cooling modes of the heat pump.

Abstract: Disclosed is a microchannel heat exchanger comprising a primary core including a first header and a second header and a secondary core including a first auxiliary header and a second auxiliary header, further comprising a first header interconnect extending between the first header and the first auxiliary header and having a first interconnect fluid passage extending therethrough; and a second header interconnect extending between the second auxiliary header and the second header and having a second interconnect fluid passage extending therethrough.

Abstract: A refrigerant distribution and charge balancing system for a heat exchanger and heat pump is disclosed. The system comprises an auxiliary header that is adapted to be fluidically coupled to a first header of the heat exchanger using one or more tube stubs. The auxiliary header is configured at a predefined distance from the first header. The auxiliary header is adapted to be fluidically coupled to a supply tube associated with a refrigerant line of the heat exchanger.

Abstract: A heating, ventilation, and air conditioning (HVAC) system includes a vapor compression cycle comprising a heat exchanger and an expansion device arranged in fluid communication with the heat exchanger. A fluid is configured to circulate within the vapor compression cycle in a first direction during a first mode and is configured to circulate within vapor compression cycle in a second, opposite direction during a second mode. A receiver is fluidly coupled to the vapor compression cycle at a connection point. The connection point is positioned between the heat exchanger an the expansion device and the receiver is positioned vertically above the connection point.

Abstract: Disclosed is a microchannel heat exchanger comprising a primary core including a first header and a second header and a secondary core including a first auxiliary header and a second auxiliary header, further comprising a first header interconnect extending between the first header and the first auxiliary header and having a first interconnect fluid passage extending therethrough; and a second header interconnect extending between the second auxiliary header and the second header and having a second interconnect fluid passage extending therethrough.

Abstract: A swaging tool for use with a non-circular heat exchange tube including a body having a first sealing surface positionable in contact with the heat exchange tube to form a first seal with the heat exchange tube and a second sealing surface positionable in contact with the heat exchange tube to form a second seal with the heat exchange tube. At least one fluid channel is formed in the body and is connected to an outlet port. The outlet port is arranged between the first sealing surface and the second sealing surface.

Abstract: Disclosed is a microchannel heat exchanger comprising a primary core including a first header and a second header and a secondary core including a first auxiliary header and a second auxiliary header, further comprising a first header interconnect extending between the first header and the first auxiliary header and having a first interconnect fluid passage extending therethrough; and a second header interconnect extending between the second auxiliary header and the second header and having a second interconnect fluid passage extending therethrough.

Abstract: Disclosed is a multiport distributor comprising: an elongated member comprising a plurality of inlet ports disposed along a first end of the elongated member, a plurality of first outlet ports disposed along a face of the elongated member, and a plurality of fluid passages disposed within the elongated member and extending between the plurality of inlet ports and the plurality of first outlet ports, wherein the plurality of fluid passages are substantially parallel to one another and configured to convey a fluid in a first direction, wherein the plurality of first outlet ports are configured to direct a fluid passing therethrough in a second direction, wherein the second direction is substantially perpendicular to the first direction.

Abstract: A heat exchanger assembly includes a plurality of flattened heat exchanger tubes. The plurality of heat exchanger tubes include a bend that separates the plurality of heat exchanger tubes between extending in a first plane and extending in a second plane transverse to the first plane. An inlet manifold is in fluid communication with the plurality of heat exchanger tubes and includes a distribution insert at least partially extending through an inlet opening in the inlet manifold. An outlet manifold is in fluid communication with the plurality of heat exchanger tubes and includes an outlet opening spaced inward from opposing ends of the outlet manifold.

Abstract: The present invention relates to processes for forming composites. The invention also relates to composites obtained by the processes described herein. Also provided are composites comprising 2D materials.

Abstract: A heat transfer tube and a heat exchanger incorporating at least one heat transfer tube are provided. The heat transfer tube and the heat exchanger are optimized for use within an air conditioner (which is configured to operate only in a cooling mode). The heat transfer tube includes a tube body with an interior surface and an exterior surface. The tube body defining an outer diameter (Do) and a wall thickness (WT), wherein a ratio (WT/Do) the wall thickness (WT) to the outer diameter (Do) is between 0.061 and 0.071. The heat transfer tube includes multiple pluralities of adjacent helical fins protruding circumferentially around the interior surface of the tube body at respective helix angles. The multiple pluralities are separated by one or more transition area(s).

Abstract: A heat transfer tube and a heat exchanger incorporating at least one heat transfer tubes are provided. The heat transfer tube and the heat exchanger are configured to operate in both a heating mode and a cooling mode (e.g., to optimize the reversible function a heat pump). The heat transfer tube includes a tube body with an interior surface and an exterior surface. The tube body defining an outer diameter (Do) and a wall thickness (WT), wherein a ratio (WT/Do) the wall thickness (WT) to the outer diameter (Do) is between 0.061 and 0.071. The heat transfer tube includes a plurality of adjacent helical fins protruding circumferentially around the interior surface of the tube body, and at least one groove disposed between the plurality of adjacent helical fins. The configuration of the heat transfer tube(s) is optimal for the reversible function of the heat pump.

Abstract: Disclosed is a fluid conduit connection of a vapor compression system having a cooling capacity of less than or equal to 60,000 Btu/hour comprising a first fluid conduit comprising a first aluminum alloy and having first fluid conduit outside hydraulic diameter of greater than or equal to 7 millimeters, a second fluid conduit comprising a second aluminum alloy, a second fluid conduit cross-sectional flow area, and having a second fluid conduit outside hydraulic diameter of less than or equal to 7 millimeters, an engagement between the first fluid conduit and the second fluid conduit, and a sealing material disposed within the engagement serving to mechanically bind and seal the fluid conduit connection, wherein a ratio of a cross sectional flow area of a throat of the fluid conduit connection divided by the second fluid conduit cross-sectional flow area is between 0.1 and 0.6.

Abstract: Disclosed is a multiport distributor comprising: an elongated member comprising a plurality of inlet ports disposed along a first end of the elongated member, a plurality of first outlet ports disposed along a face of the elongated member, and a plurality of fluid passages disposed within the elongated member and extending between the plurality of inlet ports and the plurality of first outlet ports, wherein the plurality of fluid passages are substantially parallel to one another and configured to convey a fluid in a first direction, wherein the plurality of first outlet ports are configured to direct a fluid passing therethrough in a second direction, wherein the second direction is substantially perpendicular to the first direction.

Abstract: Disclosed is a microchannel heat exchanger comprising a primary core including a first header and a second header and a secondary core including a first auxiliary header and a second auxiliary header, further comprising a first header interconnect extending between the first header and the first auxiliary header and having a first interconnect fluid passage extending therethrough; and a second header interconnect extending between the second auxiliary header and the second header and having a second interconnect fluid passage extending therethrough.

Abstract: A heat exchanger assembly includes a plurality of flattened heat exchanger tubes. The plurality of heat exchanger tubes include a bend that separates the plurality of heat exchanger tubes between extending in a first plane and extending in a second plane transverse to the first plane. An inlet manifold is in fluid communication with the plurality of heat exchanger tubes and includes a distribution insert at least partially extending through an inlet opening in the inlet manifold. An outlet manifold is in fluid communication with the plurality of heat exchanger tubes and includes an outlet opening spaced inward from opposing ends of the outlet manifold.

Abstract: The roll claw is a complementary tool with a purpose of using less stress force to do work. The roll claw is configured with a rounded head and a claw end. The roll claw has a square portal that accepts a ratchet or pull handle of various sizes, and a round portal that accepts a chain link of any make where a tension strap with a hook can be attached. The roll claw uses leverage to reduce the stress force to perform certain work.