To provide heat exchanger elements which allow the creation of Enthalpy exchangers whereby the efficiency of sensible energy exchange and latent energy exchange can he varied and controlled and especially improved, a method for the production of heat exchanger elements is provided including a) producing a plate element with defined outer dimensions and corrugations in the area within a border, b) perforating the plate in predefined areas and in predefined dimensions, c) filling the perforations with a polymer with latent energy recovery capability and d) curing the polymer.

A system and method for determining and reporting refrigeration equipment operating metrics using only sensed interior air temperature is taught. By repeatedly sensing interior air temperature an average food temperature metric, a runtime metric, a compressor cycle metric, and a door opening count metric is determined and reported.

A counter flow air-to-air energy exchange assembly may include a plurality of air channel levels configured to allow air to pass therethrough. Each of the air channels may include a spacer layer having a plurality of modular spacer components secured together. At least two of the modular spacer components are identical in size and shape. The spacer layer includes a plurality of air channels. Each of the plurality of air channels extends from an air inlet to an air outlet.

A corrugated fin, in particular for a heat exchanger, having a substantially corrugated design, having a plurality of fin surfaces, wherein adjoining fin surfaces are connected to one another by means of a fin arch in such a way that a medium can flow through an intermediate space between adjoining fin surfaces, wherein the fin surfaces are arranged at an angle with respect to one another perpendicularly with respect to a throughflow direction for the medium, wherein the fin surface has at least one bulge which protrudes out of the plane of the fin surface, wherein the extent of the bulge in a direction perpendicularly with respect to the air throughflow direction is smaller than the extent of the fin surface in said direction.

A heat exchanger having at least one inner conduit comprising of a second tubular member coaxially disposed within a first tubular member, wherein the second tubular member outer surface is in contact with the first tubular member inner surface. Each of the first and second tubular members is composed of a material with an approximately 0.015 inch maximum wall thickness.

A furnace system includes a burner assembly configured to generate combustion products within a primary combustion zone comprising one or more burners. The furnace system includes a panel disposed downstream of the burner assembly along a flow path for the combustion products, where the panel includes at least one panel opening. The furnace system also includes a secondary combustion air gap defined by one or more spacers disposed between the burner assembly and the panel, such that a secondary combustion zone is established between the burner assembly and the panel and/or downstream of the panel. The secondary combustion air gap is downstream from and external the burner assembly.

A Non-Isotropic Structure for a Heat Exchanger (NISHEX) that forms fins from nested woven wire meshes. The wire meshes are shaped into channels that are stacked on top of each other to produce a non-isotropic fin structure having multiple fin layers. The fin structure exhibits a high heat coefficient while maintaining relatively high fin efficiency through the selection of fin lengths in proportion to the wire diameter in the mesh fins.

A thermal energy storage apparatus, including: a block of a heat-absorbing material, and a plurality of heat storage elements, the heat storage elements including a phase change material stored in a containment vessel; wherein each heat storage element is in thermal contact with the block of heat-absorbing material.

A method of extending the lifetime of brazed primary hot inlet wavy fin structures of aircraft heat exchangers includes inserting slots in the fins. The slots increase the mechanical compliance of the fins as well as act as crack arrestors should a thermally induced fracture occur. In an embodiment, the slots are inserted by EDM.

An article for magnetic heat exchange includes a functionally-graded monolithic sintered working component including La.sub.1-aR.sub.a(Fe.sub.1-x-yT.sub.yM.sub.x).sub.13H.sub.zC.sub.b with a NaZn.sub.13-type structure. M is one or more of the elements from the group consisting of Si and Al, T is one or more of the elements from the group consisting of Mn, Co, Ni, Ti, V and Cr and R is one or more of the elements from the group consisting of Ce, Nd, Y and Pr. A content of the one or more elements T and R, if present, a C content, if present, and a content of M varies in a working direction of the working component and provides a functionally-graded Curie temperature. The functionally-graded Curie temperature monotonically decreases or monotonically increases in the working direction of the working component.