Abstract: The invention concerns an evaporator, especially for the sugar industry, with at least two heat exchangers, into the top of which the medium to be concentrated is loaded and which are heated with steam with different compositions and/or different pressures in a cross stream, wherein the concentrated medium and the exhaust steam generated, after they come out of the heat exchanger, are carried off separately. To produce an evaporator that is simple and inexpensive in design, the invention proposes that the medium to be concentrated be loaded by a medium distribution common to all heat exchangers and the medium leaving the first heat exchanger go directly into the next heat exchanger. Only after the medium comes out of the second heat exchanger are the exhaust steam and the medium separated. The steam spaces in the heat exchanger separated from the exhaust steam space are separated from one another by a common dividing wall.

Abstract: A centrifugal separator is provided for separating water out of wet steam, and comprises a first cylindrical tube and a second cylindrical tube that is coaxially disposed in the first tube. The inner diameter of the first tube is greater than the outer diameter of the second tube. Disposed in the first tube is a swirl producer that comprises a ring of swirl vanes secured onto a hub. The first and second cylindrical tubes are provided on their ends that face away from one another with a connector that is insertable into a steam line that conveys the wet steam. The first and second cylindrical tubes are sealingly surrounded by a casing that is provided with a water drain and is radially spaced from the tubes to form a separation chamber.

Abstract: The invention provides a mixer for mixing gases and other Newton liquids, with a flow channel and built-in surfaces arranged in the flow channel that influence the flow. The built-in surfaces are vortex-generating surfaces with free surging leading edges directed against the flow whose path, the surging leading edges having both a component running in the main flow direction of the gas and a component running transverse to it. To make mixing fast and the mixing distance short, several built-in surfaces of the same type are arranged in a row basically transverse to the main flow direction. Built-in surfaces next to one another overlap in relation to the main flow direction.

Abstract: A cooling tower is provided including a cooling chamber with a bottom-to-top cooling air flow and a water injection system having spray nozzles horizontally distributed within the cooling chamber. A first air intake and a second air intake lead into the cooling chamber from below and, respectively, laterally from above the water injection system. The second air intake is implemented by a pipe, protruding into the interior of the cooling chamber, the pipe having at least two stages, beginning with a first stage next to a wall of the cooling chamber, the stages having progressively reduced flow cross-sections.

Abstract: A centrifugal separator is provided for separating water out of wet steam, and comprises a first cylindrical tube and a second cylindrical tube that is coaxially disposed in the first tube. The inner diameter of the first tube is greater than the outer diameter of the second tube. Disposed in the first tube is a swirl producer that comprises a ring of swirl vanes secured onto a hub. The first and second cylindrical tubes are provided on their ends that face away from one another with a connector that is insertable into a steam line that conveys the wet steam. The first and second cylindrical tubes are sealingly surrounded by a casing that is provided with a water drain and is radially spaced from the tubes to form a separation chamber.