Mechanical vapor compression Evaporator design

Perhaps the highest thermal vapor compression technology in any field can be found in the water desalination industry. Technology in that industry has advanced to designs with more than eight successive effects with steam economies over 12. Thermal compression evaporators beyond seven effects In process industries does not appear to be economical because mechanical vapor compression systems offer a better alternative. 

Compressor power is proportional to the increase in saturation temperature (AT) produced by the compressor. An evaporator designer must optimize power consumption and heat transfer surface. Mechanical vapor compression achieves the highest possible energy savings these energy savings are reached at the expense of much higher investments and, in most cases, increased electrical power consumption. 

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