Project Info

Project Title 
Mechanical Vapor Recompression - Tomato
Project Number 
PGE 0706
Investor Owned Utilities 
Commercial, Agricultural
Project Year(s) 
2007 - 2008

Project Summary:

This assessment measured the energy savings of a Mechanical Vapor Recompression (MVR) evaporation system compared to a triple effect evaporation system for the production of tomato paste. The MVR system used 89% less natural gas per pound of water evaporated than the triple-effect evaporation system. In MVR, the heat source for the evaporation is the steam generated by the evaporation itself. After compression to a slightly higher pressure by a fan or a centrifugal compressor, the steam has a higher condensation temperature and is used to drive the evaporation. Thus, in an MVR evaporator the high energy content of the steam (its “latent heat”) is entirely recovered, resulting in very high energy efficiency. For more information, please contact the sponsoring organization.

Related Materials:

Fact Sheet: Tomato Processing Industry Ripe for MVR Technology Learn More 

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