Abstract: A dephlegmation condenser for binary/polynary condensation of a vapor mixture is arranged upright. It has tubes (4) through which the coolant flows, an inlet connection (1) arranged in the top region of the coolant tubes and intended for the mixture to be condensed, and a collecting space (2) arranged below the coolant tubes (4) and intended for the condensate to be drawn off. The inlet connection (1) and the collecting space (2) are connected to one another via a condenser shell (3) encasing the tubes (4). The coolant is directed in pure counterflow to the mixture in the predominant part of the condensation space.The vapor-side, smooth temperature profile achieved is a consequence of the segregation during the condensation. A mixture which is enriched with the higher-boiling component of the mixture condenses at the start of the condensation section, whereas another mixture which is enriched with the lower-boiling component of the mixture condenses out at the end of the condensation section.

Abstract: There is provided a combination for use in a shell and tube heat exchanger which comprises: a shell having a substantially horizontally extending longitudinal axis and an open end; an annular distributor adjacent to the shell end and having an annular chamber defined therein in fluid communication with the shell interior through the shell end; a tubesheet longitudinally spaced from the shell end; a baffle cage having an interior portion in the shell interior and an exterior portion outside the shell between the tubesheet and shell end, wherein the baffle cage is longitudinally spaced from and unconnected to the tubesheet; a bundle of tubes extending from the tubesheet and through the baffle cage and shell interior; and a support member having a lower end fixedly connected to the interior surface of the annular distributor and an upper end contacting but not connected to the exterior portion of the baffle cage at a lowermost location thereof.

Abstract: A refrigerant distributor for use in a shell and tube evaporator has a decreasing cross-sectional area which uniformly distributes refrigerant to the tube bundle within the evaporator shell and operates with a small distributor to evaporator pressure drop.

Abstract: A heat exchanger is provided, including a tubular shell having an opening in one end thereof, an open-topped, side-slotted shroud mounted inside the shell, a bundle of tubes extending through the opening into the shroud, means for circulating a hot fluid through the bundle of tubes,means for charging a heat-exchange fluid to the space between the shell and the shroud for flow through slots into the shroud and into indirect heat exchange contact with the bundle of tubes for cooling the hot fluid, andmeans for removing heated exchange fluid from the top of said shell.

Abstract: An impingement distributor for a shell and tube heat exchanger and a method of recovering waste heat from a hot gas which minimizes adverse heat flux at the outermost banks of tubes for enhanced operational reliability. The impingement distributor has a cylindrical distribution plate having evenly arranged rows of longitudinal perforations and a plurality of impact bars longitudinally aligned with the perforations. The hot fluid impinges on the impact bars, and direct impingement on the tubes is avoided.

Abstract: The structural integrity and coolant flow characteristics of a heat exchanger which employs double tubes is improved by providing a structural element, which defines an annular chamber through which coolant may flow, about the internal structure which supports the opposite ends of the double tubes. The outer wall of the structure which defines each of the annular chambers in alignment with and welded to, a casing which in part defines a gas entry or exit chamber axially disposed at a first side of the internal tube support structure and to an external support ring located axially at the other side of the internal tube support structure.