Abstract: A falling film evaporator, includes an outer shell formed by a cylindrical shell and convex ends, at least one tube bundle formed of vertical tubes arranged inside the outer shell, whereby a heat-releasing, condensable vapor can be fed into the vertical tubes from below upwards, and a heat-receiving, vaporizable liquid can be fed to the upper end of the tube bundle to flow downwards along the outer surface of the vertical tubes as a thin liquid layer, whereby an element for discharging non-condensable gases contained in the heat-releasing vapor has been arranged in the tube bundle. The evaporator includes two or more tube bundles each being provided with a tube plate of its own, whereby the vertical tubes of each tube bundle are at their lower ends attached to the tube plate of the corresponding tube bundle and at their upper ends to collecting manifolds of the corresponding tube bundle.

Abstract: The subject of the disclosure is a vertical shell and tube straight tube countercurrent condenser, wherein the condensing steam flows on the shell side of the condenser, and the cooling water on the tube side.

Abstract: A shell and tube heat exchanger include heat surface tubes (6) surrounded by a shell (1), the tubes communicating with an inlet end chamber (11) through a tube sheet (5) at one end and with an outlet end chamber (12) through a tube sheet at the other end, and in the shell side of the tube heat exchanger there is at least one baffle plate made of flat strips for supporting the heat surface tubes and guiding the shell-side flow. The flat strips forming the baffle plate are straight and thinner than the distance between the tubes to be supported, and the required support is achieved by placing each flat strip of the baffle plate in an inclined position with respect to the heat surface tubes so that one of the crosswise edges of the flat strip is supporting one and the other is supporting the other of adjacent tubes.

Abstract: The subject of the invention is a vertical shell and tube straight tube countercurrent condenser, wherein the condensing steam flows on the shell side of the condenser, and the cooling water on the tube side.

Abstract: A shell and tube heat exchanger include heat surface tubes (6) surrounded by a shell (1), the tubes communicating with an inlet end chamber (11) through a tube sheet (5) at one end and with an outlet end chamber (12) through a tube sheet at the other end, and in the shell side of the tube heat exchanger there is at least one baffle plate made of flat strips for supporting the heat surface tubes and guiding the shell-side flow. The flat strips forming the baffle plate are straight and thinner than the distance between the tubes to be supported, and the required support is achieved by placing each flat strip of the baffle plate in an inclined position with respect to the heat surface tubes so that one of the crosswise edges of the flat strip is supporting one and the other is supporting the other of adjacent tubes.

Abstract: A falling film evaporator, includes an outer shell formed by a cylindrical shell and convex ends, at least one tube bundle formed of vertical tubes arranged inside the outer shell, whereby a heat-releasing, condensable vapour can be fed into the vertical tubes from below upwards, and a heat-receiving, vaporizable liquid can be fed to the upper end of the tube bundle to flow downwards along the outer surface of the vertical tubes as a thin liquid layer, whereby an element for discharging non-condensable gases contained in the heat-releasing vapour has been arranged in the tube bundle. The evaporator includes two or more tube bundles each being provided with a tube plate of its own, whereby the vertical tubes of each tube bundle are at their lower ends attached to the tube plate of the corresponding tube bundle and at their upper ends to collecting manifolds of the corresponding tube bundle.

Abstract: A liquid evaporation method and apparatus wherein the contamination of the heat transfer surfaces is avoided by using a special circulating fluid. The liquid to be evaporated is heated in direct contact with the circulating fluid and conveyed to a vapor separation tank. In the evaporator according to the invention, heat transfer surface contamination may be limited by mixing the liquid to be evaporated with the circulating fluid only after the heat exchanger so that the heat surface contaminating liquid to be evaporated does not make direct contact with the heat surface.

Abstract: A liquid ring compressor has an annular space between the rotor and the rotor axle, the annular space being connected with the rotor compression zone through two or more discharge openings. The liquid ring compressor is operated with improved efficiency.

Abstract: Method and equipment for the utilization of the freezing heat contained in water as a source of heat of a heat pump. The water flow to be utilized as the source of heat is evaporated in one or several stages (4) at such a low pressure that, when the vapor that is formed binds its evaporation heat out of the water, part of the water freezes. The vapor formed is condensed in one or several heat exchangers functioning as the evaporator of the heat pump, whereat the vapor, on being condensed, delivers its heat to the heat transfer medium used in the heat pump.

Abstract: The invention is concerned with a method and an apparatus for the vaporization of liquid in a heat exchanger of the vertical-tube type, in which exchanger the vapor or liquid delivering the heat is passed through the tubes of the group (7) of tubes in the heat exchanger preferably from the bottom upwards. The group (7) of tubes is passed through at least one nozzle plate (18) or nozzle basin (22) so that nozzle openings (16, 20, 23) surrounding the tubes are formed between the openings in the nozzle plates and the tubes. In the heat exchanger the liquid to be vaporized is passed to the mantle side into the upper part of the heat exchanger or into each nozzle basin of the heat exchanger separately and is guided so as to flow downwards on the outer face of the group (7) of tubes as a liquid film.