DANFOSS Save Energy And Reduce Your Total Cost Of Ownership
Using Danfoss VLT® Drives
If you have ever had to make a serious job of saving energy, it is
now. Not only because of climate changes and the reduction of CO2
emissions, but of course also because costs have to be saved as much
as possible.
Using Danfoss variable speed drives makes it relatively easy to
reduce the power consumption in your electric drive systems. In most
cases you are able to recover the investment costs in a short period
of time.
Full speed
In a lot of applications electric motors are still directly
connected to the mains supply and dampening or throttling is
commonly used to control pump or fan throughput.
This can be compared with driving your car at full speed and at the
same time controlling your speed by hitting the brake. It is clear a
lot of energy is lost this way.
By using a VLT® variable speed drive you are able to reduce high
starting currents and the power in the electric drive system can
continuously be adjusted to the need. This gives you maximum
performance combined with minimal energy consumption.
Energy efficient
VLT® variable speed drives have a very good energy efficiency of
better than 98%. This means that less than 2% of the power is lost
in the drive. As a result of this VLT® drives produce less heat.
This also means that less energy is needed to cool the drive or the
space where the drive is installed.
Pumps and fans
In all electric drive systems VLT® drives help you reduce the energy
consumption but driving pumps and fans gives you the best possible
energy savings. This is because in these variable torque
applications the ratio between rotation speed and power consump¬tion
is a factor 3. Driving pumps and fans at 10% less speed means more
than 25% less energy consumption. 20% speed reduction saves almost
50% in energy. Thus relatively small reduc¬tions in speed already
make you save a lot of energy.
Total Cost of Ownership
The Total Cost of Ownership for electric drive systems is not only
limited to the purchase costs. You also have to take into account
installation costs, maintenance costs and the costs for dismantling
the installation after its lifecycle.
The biggest impact on the Total Cost of Ownership however is the
energy costs. The energy efficiency of the installation therefore
plays a very important role in the total costs. Saving energy makes
you save money right from the start. Using a VLT® frequency drives
will reduce costs even more.
Other savings
By adjusting the power of an electric drive system to the actual
need saves a lot of energy.
But there are more advantages:
• reducing wear
• improving reliability
• less maintenance
• longer life time
• less unwanted stops
• improving work environment
All these advantages represent a value and all have a positive
effect on the Total Cost of Ownership. Therefore you save a lot more
costs than only energy costs.
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News Categories : Variable speed drives
Electric drive systems
Danfoss drives
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