Caloris Engineering White Paper on MVR Evaporator Upgrades Now Available

Discusses High-Speed Compressor & Turbofan Replacements for Improved Reliability and Performance

Easton, MD—Caloris Engineering has a new white paper available, “MVR Evaporator Upgrades: High-Speed Compressor & Turbofan Replacements for Improved Reliability and Performance,” which explains the risks of older equipment and the solutions available thanks to advances machine designs and evaporation technology.

Evaporators are widely used in the process industry for concentrating liquids. A great number of evaporators use the technique of Mechanical Vapor Recompression (MVR) for efficient delivery of the heat for evaporation. These MVR Units include specialized rotating machines (either high-speed compressors or turbofans).

Evaporators with MVR Units were installed in processing facilities for food and dairy, ethanol, sweeteners, pulp and paper, wastewaters and other aqueous fluids throughout the 1970s, ’80s and ’90s. The useful life of these MVR Units is roughly 25 years. Consequently, any of these original MVR Units still operating today have well exceeded their useful life. This has implications for unit functionality, efficiency and safety.

MVR evaporator upgrades have proven very effective in helping facility managers reduce maintenance costs, improve evaporator performance and reduce safety risks associated with antiquated compressors and turbofans. Caloris can help facility managers develop a cost-effective plan to upgrade their MVR Evaporator now, before a catastrophic failure occurs.

Evaporators incorporating MVR for concentrating liquids continue to be critically important for a wide range of industries.

The compressors and turbofans comprise the heart of the MVR design, and after 25 years of daily operation, may be approaching a significant hardware failure. Such an event frequently disables a processing plant for a lengthy amount of time. These failures also have been known to cause serious injury to personnel.

“Facility managers should consider the risks and make plans now to develop an MVR Evaporator upgrade plan,” said Caloris President & CEO Jim Peterson. “The good news is that better options now exist for replacing aging or obsolete MVR Units, including capacity increases. Caloris can offer these options.”

Interested plant staff can request to download the white paper online, call Caloris at 410-822-6900 or send email to to speak with a process engineer about a potential MVR evaporator retrofit.

About Caloris Engineering, LLC
Caloris Engineering engineers and builds evaporation, membrane and drying processing systems for the juice, dairy and other food industries to create the best achievable concentrates and a wide spectrum of powders produced on Caloris Tower or Compact Multiple Stage (CMS) spray dryers. Both stand-alone and integrated solutions are available. Caloris equipment is also used to treat industrial wastewater. Caloris Thin Film Dryers (TFDs) convert brines and other wastewater concentrates into powder. Caloris technologies are consistently energy efficient for lower costs and reduced carbon footprints. The company was founded in 2006 in Easton, Md. Learn more at

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About Caloris

Caloris transforms process systems design for the better with unexpected, future-focused solutions that solve real operational problems. We engineer efficient, dependable and productive solutions that also improve environmental sustainability where practical. Designed with the end user in mind to drive plant productivity. Caloris offers evaporation, membrane filtration and spray drying process systems for food and dairy industries, as well as for water reuse and wastewater treatment applications. Both Caloris’ custom and pre-engineered packaged systems are designed to meet our customers’ specific concentration/purification needs utilizing the most cost effective and energy efficient technologies available. Whether concentrating dairy, food or juice products at a high-volume production facility, or processing industrial wastewaters to reduce transportation and treatment costs and recover re-usable water, Caloris provides a range of options and technologies.