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diagram of a double-effect falling film evaporator. Condensing vapors from flash tank B1 heat evaporator A2. •1=feed •2=product •3=steam •4=vapors. In chemical engineering, a multiple-effect evaporator is an apparatus for efficiently using the heat from steam to evaporate water. [1]
The heat added in the brine heater usually comes in the form of hot steam from an industrial process co-located with the desalination plant. The steam is allowed to condense against tubes carrying the brine (similar to the stages). [citation needed] The energy that makes possible the evaporation is all present in the brine as it leaves the heater.
An industrial evaporator used in a chemical plant in Turkey. An evaporator is a type of heat exchanger device that facilitates evaporation by utilizing conductive and convective heat transfer, which provides the necessary thermal energy for phase transition from liquid to vapour. Within evaporators, a circulating liquid is exposed to an ...
Multiple effect evaporation (MEE) Thermal vapor recompression (TVR) (also known as thermocompression) A combination of the three methods may be used depending on the process. For instance, a 3-effect evaporator circuit may be installed using MVR to transfer heat.
A two evaporator single compressor with individual expansion valves for each evaporator after passing through the back pressure valve enters into the compressors and hence there is a significant rise in temperature is observed. This system helps in dropping the pressure from high pressure evaporators with the help of back pressure valves.
Once the evaporator components themselves have been designed, ancillary equipment such as pumps (particularly for forced circulation evaporators) and heaters would need to be designed and/or specified for the system to give a reliable performance and cost estimate of the system as a whole. These would be based on the specifications determined ...
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