Abstract: A heat exchanger includes a plurality of multi-channel heat exchange tubes extending between spaced inlet and outlet headers. Each heat exchange tube has a plurality of flow channels defining discrete flow paths extending longitudinally in parallel relationship from its inlet end to its outlet end. The inlet header has a channel for receiving a two-phase fluid from a fluid circuit and a chamber for collecting the fluid. The chamber has an inlet in flow communication with the channel and an outlet in flow communication with the plurality of fluid flow paths of the heat exchange tubes. The channel defines a relatively high turbulence flow passage that induces uniform mixing of the liquid phase refrigerant and the vapor phase fluid and reduces potential stratification of the vapor phase and the liquid phase within the fluid passing through the header.

Abstract: A heat exchanger includes a plurality of flattened, multi-channel heat exchange tubes of generally J-shape extending between an inlet header and an outlet header. Each heat exchange tube has a base bend that extends horizontally between the vertically extending relatively shorter leg, which is in fluid flow communication with the fluid chamber of the inlet header, and the vertically extending relatively longer leg, which is in fluid flow communication with the fluid chamber of the outlet header.

Abstract: A refrigerated merchandiser includes a display case defining a product display region having an open-front isolated from the ambient air of the store by means of a downwardly directed inner air curtain of relatively cold refrigerated air and a downwardly directed outer air curtain of relatively warmer air established via an improved curtain air admission assembly. The curtain air admission assembly defines a plenum atop the refrigerated display through which the flow of air substantially reverses direction when passing from a first flow passage to a second flow passage. This reversal of flow direction serves to distribute the air flow more uniformly along the length of the display case.

Abstract: A heat exchanger has a first thermally conductive tube for conducting a fluid and a second thermal conductive tube for conducting a fluid. The first thermally conductive tube forms a first loop while the second thermally conductive tube forms a second loop. The first loop neighbors the second loop.

Abstract: A long-lasting antimicrobial wipe using metallic silver as the oligodynamic agent. The wipe has an outer layer of a flexible textile fabric having metallic silver deposited thereon, bonded to an inner layer of a fibrous water-retaining material. The silver is preferably deposited on the textile fabric by electroless coating, to provide efficient coverage of all available surfaces.