An evaporator with a finned tube block with tubes and fins, wherein the tubes are arranged in rows and the fins are arranged between the tubes, with a first collection and distribution box and with a second collection and distribution box. Each of the two collection and distribution boxes has a bottom and a box lid. The respective bottom has openings for inserting the tube ends of the tubes of the finned tube block. The finned tube block is divided into evaporator flows to which groups of tubes of the finned tube block are assigned. The tubes of an evaporator flow each merge end-side into a box area of a collection and distribution box. The respective bottom of the collection and distribution boxes is designed with rim holes for inserting the tube ends in the openings.

A method of heating a fluid stream for a power plant comprises diverting a portion of a main flow of flue gas from a power plant at a first pressure (P1), flowing the diverted flue gas through a heat exchanger, flowing an auxiliary fluid stream through the heat exchanger, and transferring heat from the diverted flue gas into the auxiliary fluid stream in the heat exchanger to raise a temperature of the auxiliary fluid stream from a first temperature (T3) to a second temperature (T4), while lowering a first temperature of the diverted flue gas (T1) to a second temperature (T2). The diverted flue gas is then returned to the main flow of flue gas in the power plant at a second pressure (P2). The method of flue gas flow through the heat exchanger may be accomplished by adding a self-contained flow path from a boiler higher pressure (P1) zone to a lower pressure (P2) zone.

A heat recovery apparatus, system and method of using the same. The heat recovery apparatus includes a particulate inlet, a particulate distributor in fluid communication with the particulate inlet, a cavity in fluid communication with the particulate distributor, a plurality of pipes contained within the cavity and configured for transmission of a heat transfer fluid therethrough, and a particulate outlet in fluid communication with the cavity.

A heat sink for use in drawing heat away from electronic devices such as solid state drives (SSDs) includes microchannels formed along its length. The microchannels may have a triangular cross-section and may be formed by additive manufacturing. Two pairs of microchannels are provided, with coolant fluid running in a first direction through the first pair, and in a second opposite direction in the second pair to minimize thermal gradients along the length of the SSD and heat sink. The walls of the microchannel may be formed with a roughness that provides turbulent flow through the microchannels. The turbulent flow together with the large surface area of the three sides of the triangular microchannels increases the heat transfer coefficient of the microchannels, while the triangular shape and pumping fluid through a pair of microchannels reduces pressure drop along the microchannels.

A heat sink for use in drawing heat away from electronic devices such as solid state drives (SSDs) includes microchannels formed along its length. The microchannels may have a triangular cross-section and may be formed by additive manufacturing. Two pairs of microchannels are provided, with coolant fluid running in a first direction through the first pair, and in a second opposite direction in the second pair to minimize thermal gradients along the length of the SSD and heat sink. The walls of the microchannel may be formed with a roughness that provides turbulent flow through the microchannels. The turbulent flow together with the large surface area of the three sides of the triangular microchannels increases the heat transfer coefficient of the microchannels, while the triangular shape and pumping fluid through a pair of microchannels reduces pressure drop along the microchannels.

An equipment determination method of a cogeneration system includes the steps of: calculating a total hot water supply load for each day over a predetermined period longer than a specific period based on each unit hot water supply load for hour according to hot water supply use by consumers; setting as a representative period a specific period on which the total hot water supply load becomes at least a low load among the calculated total hot water supply load for each day; determining a capacity of the cogeneration equipment based on the total hot water supply load on the set representative period; and determining a capacity of the plurality of hot water storage tanks based on an amount of hot water supply load exceeding the capacity of the determined cogeneration equipment among each unit hot water supply load for two or more divided periods including the set representative period.

An energy exchanger for exchanging energy between a hot flow and a cold flow may comprise a hot flow section and a cold flow section, each of the sections comprising the same quantity of channels having variable cross sections. The inlets of the hot flow channels may be juxtaposed to the outlets of the cold flow channels and the outlets of the hot flow channels may be juxtaposed to the inlets of the cold flow channels such that the hot and cold flows move in opposing directions. The energy exchanger may further comprise a liquid distribution system and a common interface between each hot flow channel and a corresponding cold flow channel with an exponentially varying surface area adapted for exchanging latent energy released through condensation in the hot flow section and absorbed through evaporation in the cold flow section.

A vapor source system based on vapor-liquid ejector supercharging combined with flash vaporization technology belongs to the technical fields of waste heat utilization and steam generation. The system comprises a vapor-liquid ejector, a flash vaporization tank and a intermediate heat exchanger, wherein the vapor-liquid ejector uses high-pressure steam to raise temperature and pressure of low-pressure water absorbed from the flash vaporization tank; the pressure-increased water is flashed into low-pressure saturated steam after entering the flash vaporization tank; the saturated water which is not flashed is collected at the bottom of the flash vaporization tank. The system generates multiple low-pressure flash vaporization saturated steam with a small portion of high-pressure steam, and realizes the recovery and utilization of waste heat such as flue gas of boiler, improves the economy of thermal process, and provides a flexible and adjustable vapor source for heavy oil thermal recovery, seawater desalination or sewage treatment equipment.

A device for heat recovery from service water, including at least one, in particular integrally materially bonded, heat-exchanger tube and a body having a substantially surface-like/laminar, in particular plate-like, region, wherein the at least one heat-exchanger tube, in particular made of copper or stainless steel, is oriented along a plane that is not orthogonal to, in particular is parallel to, the main plane of extension of the region.

A shell-and-plate heat exchanger includes: a shell forming an internal space; and a plate stack, disposed in the internal space, including heat transfer plates that are stacked and joined together. The shell-and-plate heat exchanger is configured to allow a refrigerant that has flowed into the internal space to evaporate. The plate stack forms: refrigerant channels that communicate with the internal space and through which a refrigerant flows; and heating medium channels that are blocked from the internal space and through which a heating medium flows. Each of the refrigerant channels is adjacent to an associated one of the heating medium channels with one of the heat transfer plates interposed therebetween. The shell-and-plate heat exchanger further includes one or more supply structures that supply the refrigerant to the refrigerant channels such that the refrigerant flows downward.