Air Compressors – SSR 2-Stage
is stacked in your favour.
world, industry has come to depend on Ingersoll-Rand SSR rotary
screw compressors for reliability, lower installation and operating
costs, and superior designs.
has really stacked things in your favour with the SSR 2-Stage series
of rotary screw air compressors. The advanced, stacked two stage
airend technology saves up to 15% in kilowatt costs, and when combined
with our unique Intellisys stepper motor capacity control, gives
you an exceptional combination of superior compressor technology
and low operating costs.
Stage Efficiency, SSR Affordability
of rotors in SSR 2-Stage compressors fit into a combined airend
assembly. Compression is shared between the first and second
staged flowing in series. This increases overall compression
efficiency up to 15% of the total full load kilowatt consumption.
You can enjoy these savings for only a modest increase in
capital cost over that of single stage rotary screw compressors
go a long way to reduce your compressor’s initial cost and operating
expenses. As a rule of thumb, our SSR 2-Stage compressor will save
you up to £525 per 1000 hours of operation when compared to single
stage compressors. If your power cost is £0.035 per kilowatt hour,
and operate compressors at 6000 hours per year, your first year’s
savings, per compressor, could be as great as £5,250! In fact the
larger the electric motor the greater the savings would be. Savings
like these quickly recover the capital cost increment of the SSR
2-Stage over single stage rotary compressors, and it would not take
long for the savings to return the entire cost of the compressor.
Now that’s significant!
Value, The Lowest Total Cost
factors contribute to a compressor’s operating expense: energy;
water (if water cooled); replacement parts, coolants and lubricants,
and labour costs. SSR 2-Stage compressors don’t require water or
consume a great deal of costly renewal parts. Compare the SSR 2-Stage’s
energy and installation costs, and maintenance expense to other
compressors. You’ll see that the SSR 2-Stage compressors offer the
lowest total cost and can provide a rapid return on your investment.
Your Utility For More Savings
may have programs to reward companies who demonstrate energy conservation.
Your electric utility may be supportive of demand side energy management
efforts. Typically the utility will reward effective conservation
efforts with incentives. You should contact your utility to see
what programmes exist. More than likely SSR 2-Stage compressors
will qualify as new or replacement compressor energy conservation
The SSR 2-Stage
No other manufacturer
has a drive train equal to ours, and nobody but Ingersoll-Rand offers
a standard two year, unlimited hour warranty on train drive components.
Our drive train includes a perfectly matched motor, optimising gears,
and our two stage airend. Each component complements the other ,
giving you the most reliable, rugged, and simplest form of power
transmission ever built, and a warranty that proves it.
SSR Motors are
designed both mechanically and electrically to be the perfect match
for each compressor. We use only copper windings and class F insulation
for greater reliability and increased motor life. Our motor is a
dedicated compressor motor, designed for a 46°C ambient, and the
efficiency is rated at the applied point of the motor. At the maximum
rated ambient, the motor temperature rise does not exceed 89°C.
This additional thermal capacity will ensure longer life of the
drive is the most unique feature of our drive train. The drive gear
(centre) is mounted directly on the motor shaft, and the driven
gears are mounted on the shafts of each male rotor. The loads generated
by the driven gears help offset the load on the drive gear further
enhancing reliability and life. This drive system eliminates maintenance
prone couplings which can be difficult to align, and are also more
energy efficient and reliable than multiple belt drive systems.
The drive is totally enclosed so that no dust nor dirt can get in.
Our exclusive seal
and scavenge system prevents coolant from leaking into the motor.
Air enters into
the inlet of the first stage and is compressed as the male and female
high displacement rotors rotate and mesh with each other. The first
stage rotors discharge air through a coolant curtain located at
the entry of the interstage area. Cooled air from the inter stage
enters the inlet of the second stage and is compressed by the high
efficiency second stage male and female rotors. The compressed air
now at desired system pressure passes through the second stage discharge
port, and exits the two stage airend through the discharge flange.
enhance airend efficiency, coolant is injected into a channel
at the first stage discharge port. A precisely machined liquid
orifice in the channel creates a curtain of coolant in the
interstage passage. Air passes through the curtain on its
way to the second stage, and through contact cooling, lowers
the second stage inlet temperature. This patented process
eliminates expensive non contact cooling devices such as air
or water-to-coolant heat exchangers.