Next generation of mechanical vapor recompression

24 October 2019 | Web Article Number: ME201916759

Environmental Management & Control
Heating, Cooling & Ventilation
Water & Effluent Management

TLT-Turbo GmbH, a global ventilation fans and systems manufacturer, has launched a new range of mechanical vapour recompression (MVR) fans, with ceramic hybrid bearings that provide an exceptionally long operational lifespan. Integrating the latest ventilation technologies, this fan offers numerous advantages regarding performance efficiency, minimal maintenance and high reliability.

Mario Schmidt, Head of the company’s Vapour Fans business segment, said the fan had been in development since 2012 since the first case studies were carried out. Following intensive discussions with clients, TLT-Turbo established that a need existed for low maintenance MVR fans.

This was followed by four years of intensive research, product testing and consultations with clients. The first MVR fans were rolled out in 2016 while continual product improvement has remained a focus area for the company.

Next generation of mechanical vapor recompression

“MVR fans have been available on the market for some time but instead of just following the trend, TLT-Turbo took time to ensure that we came to the market with a completely new, state of the art MVR solution,” said Schmidt “And we continue to have on-going discussions and feedback exchanges with our clients worldwide in order to continuously adapt and improve our MVR offering to their requirements.”

He said the implementation of hybrid ceramic bearings was a key differentiator of the TLT-Turbo MVR fan.

“Our clients are amazed by the possibility of a hybrid bearing operating at high speed without circulating oil. Conventional roller bearings do not provide the required support for operating the fan in a broad operational speed range without running into harmful resonance frequencies (under critical operation).

“Thanks to continuous enhancement in recent years, especially through the use of ceramic materials, more effective roller bearings are available today. The use of hybrid bearings with steel rings combined with ceramic rollers has been established in many industrial applications and in the case of the TLT-Turbo MVR fan, hybrid ceramic bearings mean significantly lower maintenance requirements and better operational performance,” Schmidt said.

The hybrid ceramic bearings used in the fans are life time greased and can be operated for up to 10 years without requiring maintenance. To enhance this benefit for clients, TLT-Turbo introduced an additional device to the fan’s design that allows for the bearing to be re-greased from the outside in order to further simplify maintenance and to increase the fans’ service life.

High motor speeds, a wide range of optimised impellers and the allowance for high temperature and pressure increases complement the lifetime greased hybrid ceramic bearings. These factors allow for operation of the fan below critical speed which ensures both reliability and safe operation.

Schmidt said the fan is suited to numerous applications in the chemical, pharmaceutical, waste water treatment, and the organic natural product production industries as well as in the food and beverage process and manufacturing sectors.

“Since 2018, we have received 35 orders for MVR fans across the globe with one installation completed. Thus far, the feedback from clients has been very positive. We have received reports that the bearing temperature is considerably lower than that of other comparable MVR fans and that our fan runs with less vibration than other MVR fans.”

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