Abstract: A tube and shell heat exchanger having inlet and outlet manifolds, a plurality of tubes extending between the manifolds and a shell extending between the manifolds and enveloping the tubes. The tube and shell heat exchanger has at least one baffle through which the tubes pass to locate and maintain the tubes in a spaced apart relationship. The baffle is comprised substantially in the shape of a helix of polymeric material that extends from the axis of the helix to the periphery of the helix. The tubes pass through the material in a spaced apart relationship with respect to each other and are spaced apart from the axis of the helix. The tube and shell heat exchanger is particularly intended for marine applications.

Abstract: A non-diabatic vapor-liquid contact device is disclosed which achieves high heat transfer effectiveness without sacrificing mass transfer effectiveness. Referring to FIG. 2, a helical coil of crested tubing 84 is contained within the annualr space between shrouds 82 and 83. Liquid flows downward through the annulus, and vapor flows countercurrently upward. The mass exchanging fluids pass through the space between tube crests and the shroud, achieving very effective mixing. Heat transfer fluid is flowed through the tubing via connections 87 and 88.The heat and mass transfer is preferably additionally enhanced by interspersing contact media with the coiled tubing, either longitudinally or radially.

Abstract: The invention relates to an apparatus for exchanging heat between a small volumetric flow liquid medium and a large volumetric gaseous medium and provides for a plurality of radially disposed and interconnected concentric annular flow channels for the gaseous medium and a plurality of pipes extending axially through said annular flow channels providing flow passages for the liquid medium, said annular flow channels being preferably formed by successive convolutions of a heat insulating web.

Abstract: A shell-and-tube heat exchanger includes a shell, heat transfer tubes, tube plates, covers, inlet and outlet for fluid flowing into and out of the shell, and inlet and outlet for fluid flowing into and out of the tubes, wherein the heat transfer tubes are corrugated heat transfer tubes, the tubing wall of the corrugated heat transfer tube is configured along the longitudinal direction of the corrugated heat transfer tube in a shape formed by tangentially connecting the crests of large arcs and the valleys of small arcs, the outside diameter D of the corrugated heat transfer tube is set at 1.3 to 1.5 times the inside diameter d, the corrugated heat transfer tubes are arranged spirally around the axis of the shell in multi-layers, and spiral plates are inserted between two layers of the corrugated heat transfer tubes.

Abstract: A non-adiabatic vapor-liquid contact device is disclosed which achieves high heat transfer effectiveness without sacrificing mass transfer effictiveness. Referring to FIG. 2, a helical coil of crested tubing 84 is contained within the annualr space between shrouds 82 and 83. Liquid flows downward through the annulus, and vapor flows countercurrently upward. The mass exchanging fluids pass through the space between tube crests and the shroud, achieving very effective mixing. Heat transfer fluid is flowed through the tubing via connections 87 and 88.