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The Textile Magazine
DECEMBER 2011
there is exactly maintained
room conditions (for example
48 per cent relative humidity
in the case of Comfor Spin-
ning and say 80 per cent in the
case of weaving), the produc-
tion machines will achieve the
highest possible efficiency.
And on the other extreme
where there is badly designed
and functioning humidifica-
tion systems the production
efficiency will drop by 2 per
cent to 5 per cent. Now, as
you have observed that this
is the crucial point; and here
we have to work on making
the system more efficient and
thereby elevating the produc-
tion efficiency to the highest
level.
Undetected losses of
performance
What is the normal work-
ing situation in most facto-
ries? Humidification systems
are part of the utilities and as
such are not under the direct
control of the production man-
ager – this is totally different
from the textile production machines. For utilities cor-
rective action will be taken only after serious deficien-
cies appear. This needs scrutinizing because the range
of operation “not working optimally but undetected” is
often neglected. Only when the production suffers will
the management react.
In addition, it is difficult to quantify the problem be-
cause of the very narrow tolerances involved (± 2.5 per
cent relative humidity). The unsatisfactory performance
of an office building air-conditioning system is easily
detected when the room conditions become uncomfort-
able. On the contrary, it is difficult to judge the relative
humidity for a production machine, whether the relative
humidity is 10 per cent higher or lower then the opti-
mum. But for the textile production machine this devia-
tion would result in a production loss of 2 to 5 per cent.
Just to briefly summarize, we are facing the following
challenges:
l
Air and its properties are invisible. The performance
of the humidification plant must be visualized for the
plant operator.
l
The relative humidity can only be established
through exact measurements
l
Plants that operate in the range of “not working
properly but undetected”
l
The performance of the humidification plant is often
not under the control of the production manager.
Luwa has been dealing with these challenges for some
time and has designed its products such that the per-
formance of the humidification plant can be monitored
exclusive