A coated tubular construct for biological and industrial applications includes a plurality of channels, where each channel is radially surrounded by a wall comprising a first polymer, and a conformal coating comprising a second polymer is disposed on an outer and/or an inner surface of each wall. A method of producing a tubular construct includes 3D printing a template structure comprising a sacrificial material and a photoinitiator, and immersing the template structure in a first prepolymer solution comprising a first prepolymer and a co-initiator. During the immersion, the template structure is exposed to light, and the first prepolymer undergoes radical polymerization to conformally coat the template structure with the first polymer, forming a coated template. The sacrificial material is removed from the coated template, and a tubular construct comprising the first polymer is formed.

A heat exchanger may include a first component composed of a first material and a second component composed of a second material. The first component and the second component may each have an edge zone. The first component and the second component may abut against one another in an overlapping manner at the edge zone and may be joined together. At least the edge zone of the first component may consist of a material impermeable to laser beams. The edge zone of the first component may externally overlap the edge zone of the second component and abut against the edge zone of the second component in direct contact and may be joined thereto via a fusion bond.

A thermal conducting sheet, including: a binder resin; insulating-coated carbon fibers; and a thermal conducting filler other than the insulating-coated carbon fibers, wherein a mass ratio (insulating-coated carbon fibers/binder resin) of the insulating-coated carbon fibers to the binder resin is less than 1.30, and wherein the insulating-coated carbon fibers include carbon fibers and a coating film over at least a part of a surface of the carbon fibers, the coating film being formed of a cured product of a polymerizable material.

A heat exchanger has a hollow fiber membrane layer comprised of a plurality of hollow fiber membrane conduits each of which has a hollow portion allowing a heat medium to pass therethrough. The conduits are derived by winding a base cord of the hollow fiber membrane onto a cylindrical body. The winding follows a generally helical trajectory around the longitudinal axis of the cylindrical body with a plurality of continuous round trips from the first end to the second end and turning back at each respective end, wherein each round trip completes a number of circumferential revolutions N, wherein N is greater than or equal to one, and wherein N is less than two.

A condensation trap comprising an inlet chamber, a vent chamber and an outlet chamber. The inlet chamber is configured to receive condensate fluid through an external opening therein. The vent chamber is in fluid communication with the inlet chamber via a first passageway that includes an internal opening of the inlet chamber. The internal opening is located substantially at an opposite end of the vent chamber as the external opening. The outlet chamber is in fluid communication with the vent chamber via a second passageway that includes an internal opening in a sidewall of the vent chamber and an interior opening in an end of the outlet chamber. The outlet chamber is configured to transmit the condensate fluid through an exterior opening located at an opposite end of the outlet chamber. A vent volume portion is greater than a total volume of an internal space of the inlet chamber.

A heat exchanger and a method for additively manufacturing the heat exchanger are provided. The heat exchanger includes a housing defining a heat exchange plenum having a first fluid inlet and a first fluid outlet separated along a transverse direction. A plurality of heat exchange banks pass through the heat exchange plenum between a top side and a bottom side of the housing substantially along a vertical direction, each of the heat exchange banks comprising a plurality of heat exchange tubes. A plurality of collector manifolds are positioned at the top side and the bottom side of the housing, each collector manifold defining one or more connecting ports providing fluid communication between adjacent heat exchange banks.

A method of manufacturing a component susceptible to multiple failure modes includes generating a stereolithography file including a geometry of the component. The geometry of the stereolithography file is divided into a plurality of layers. Each of the layers includes a first portion and a second portion of the component. Energy from an energy source is applied to a powdered material such that the powdered material fuses to form the first portion and the second portion of each of the plurality of layers. Applying energy from the energy source to form the first portion of the plurality of layers includes operating the energy source with a first set of parameters and applying energy from the energy source to form the second portion of the plurality of layers includes operating the energy source with a second set of parameters. The first set and second set of parameters are different.

A heating device for thermal joining of plastic materials having a base body, which is penetrated by a cooling recess and on which an electrically insulating support surface is configured, on which at least one electrically conductive heat conductor is arranged, which is provided with an electrically insulating coating on a contact surface facing away from the support surface. The support surface has at least one curved or angled support surface section and that the heat conductor overlaps the curved or angled support surface section at least in parts.

An MCM heat exchanger 10 to be used in a magnetic heat pump device 1 comprises: an assembly 11 formed by bundling wires 12; and a cover layer 13 covering the assembly 11, each of the wires 12 is composed of a magnetocaloric material having a magnetocaloric effect, and the cover layer 13 includes: a tubular portion 14 surrounding the periphery of the assembly 11; and a filling portion 15 filling a gap between the outer periphery of the assembly 11 and the tubular portion 14.

A solar collector is provided. The collector comprises a monolithic flow control component to direct a flow of the heat transfer fluid between an inlet and outlet; and a solar absorber supported by the monolithic flow control component. The monolithic flow control component is able to support the solar absorber without any additional structural components to lend mechanical strength to the monolithic flow control component.