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[ Pinch Analysis ] [ Process simulation ] [ Electricity savings ] [ Product optimization ] [ Rental ] [ Training ]
CONSULTING SERVICES IN
ELECTRICAL (MOTIVE) ENERGY
EFFICIENCY
OF INDUSTRIAL PROCESSES
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Many
simple and cost-effective electric energy saving measures are applicable in
industrial processes to numerous equipments like:
 | centrifugal pumps
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| fans
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| blowers
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| air compressors
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| vacuum compressors
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| chillers
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 These equipments consume all together
important amounts of energy and money that can be reduced significantly
and cost-effectively. Many studies and implementations done by our
people during the last 10 years in several industries have shown that, in the majority of cases,
between 15 and 30% of electricity savings
have been
achieved with payback periods
from a few months to 2 years.
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Key
factors to successful and cost-effective results
Step 1:
Selection of good candidates, done by an expert.
A 1 to 2-day visit is done to identify equipments with promising
energy saving potential. This phase warrants the study success.
Step 2: The energy study, done by a process
engineer with the help of specialized and efficient computer
tools.
Maybe surprisingly, process engineers,
not electrical engineers, are the best persons to undertake
these studies. The reason is simple: the most important savings
found are related to some changes in the process operating
conditions. For example, major savings can be obtained for a
pumping system if the pump's head can be reduced. This would
require some modifications to the process.
Step 3: Final engineering and implementation of
profitable solutions. |
Motive
vs electric energy
The topic here is motive energy efficiency. Since most of the
motive power is supplied by electric motors, electricity savings
are then obtained. But if, for example, a steam turbine drives
an equipment, an energy efficiency improvement will then
produce some steam economy.
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Computer analysis of pumping
system operation and data reconciliation: wrong impeller
size ? Wrong motor speed ? ... |
 Computerized
automatic screening of energy saving measures for pumping
systems
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The most popular and profitable
energy saving measures usually recommended are:
 For
pumping systems :
Adjustable speed drive,
Impeller downsizing,
Reduction of the circuit's pressure / head requirement,
Load / service relocalisation and pump shutoff,
In a multi-pump service, change in impeller size and pump shutoff.
 For fans and blowers :
Adjustable speed drive,
Speed reduction,
Reduction of the circuit's pressure requirement,
Installation of a more efficient control device (ex.: inlet vanes).
 For air compressors :
Operating pressure reduction,
Pressure losses reduction in the circuit (close the loop),
Reduction of the air requirements,
Elimination of leakages,
Operating sequence optimization of all compressors.
 For
chillers :
Load reduction through heat recovery, => Pinch
analysis,
Free cooling,
Load optimization for each fridge level, => Pinch
analysis,
Condensing pressure reduction, optimization of condensors controls,
Operating sequence optimization of all chillers.
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