Paper Technology International 2024 - Journal - Page 74
PAPERTECHNOLOGYINTERNATIONAL
Type RT TURBAIR® vacuum blower
This design results in an additional reduction in energy
consumption of up to 30%, adding to the overall cost-effectiveness.
The adoption of frequency-controlled drives allow 昀氀exible
adjustments of air volume and vacuum level to match the operating
conditions of the paper machine, preventing unnecessary expansion
losses and, depending on process requirements, facilitating an
additional energy consumption reduction of up to 20%. Furthermore,
the technology eliminates the need for sealing water, ensuring
both cost savings and a positive impact on the ecological footprint
through the conservation of fresh water.
“TURBAIR® stands out as a vacuum system unparalleled in
both ef昀椀ciency and reliability, delivering optimal performance with
minimal environmental impact that no other system can match.
Numerous references prove energy savings of 40 to 60% of the
absorbed power during conversions. This calculation does not even
take into account the additional savings made possible by using a
one- to three-stage heat exchanger. Utilizing the hot exhaust air from
the blowers with a heat exchanger allows for even more signi昀椀cant
energy savings.
Automatic output regulation
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The exhaust air temperature of the blowers is between
120°C - 165°C. As a rule, approx. 70 – 80% of the drive energy of
the blowers can be recuperated through the waste heat,” explains
Manfred Dobler. “Combined, these advantages result in a simple
‘return on investment’ calculation, with the amortization period for
such a system installed in an existing paper production plant being
less than two years.”
Considering the potential savings outlined earlier, paper
producers can achieve a signi昀椀cant reduction of up to 80% in the
overall energy consumption of the vacuum system. Renowned for
its durability, the technology requires no wearing parts and involves
straightforward maintenance. MAN vacuum blowers installed over
70 years ago, continue to operate seamlessly, highlighting their
long-lasting reliability.
Versatile vacuum blower solutions
Depending on the requirements of the application, singlestage RT or multi-stage RC blower types are available in different
sizes:
Single-stage RT blower with fully automatic outlet regulation:
The RT vacuum blower, depending on its size, has a
versatile range of applications, with capacities ranging from 200
to 1,450 m3/min and up to 65 kPa. Its automatic outlet regulation
allows the volume 昀氀ow to dynamically adapt to the speci昀椀c
requirements of paper machines. The control system ef昀椀ciently
manages volume requirements, ranging from 30% to 100%.
Additionally, the RT can 昀椀ne-tune vacuum levels between 35 and 65
kPa using a frequency-controlled drive.
The extensive functionality of the RT series makes it
particularly well-suited for felt conditioning in tissue applications. Its
simple installation and compact design on a base frame make it a
convenient option for replacing existing water ring pumps with RT
blowers.
Type RC TURBAIR® vacuum blower
