HVACR Leaders Magazine: Meet the New President of ASHRAE, Bjarne W. Olesen

LG Introduces New Magnetic Bearing
Centrifugal Chillers in the UAE
The latest LG chillers offer oil-free, energy efficient solutions with highest quality
and reliability within the market
LG Electronics (LG) has launched across the
UAE its new generation magnetic bearing chiller
system, an oil-and-contact-free drive solution for
centrifugal compressors in chillers. Combining a
high-speed permanent magnet motor and active
magnetic bearings with integrated controls,
the magnetic system can operate with variable
speed drives to deliver energy savings of at
least 10 percent versus conventional centrifugal
compressor designs.
LG’s new magnetic bearing centrifugal chiller
lineup is suitable for green building application
and can reward with additional LEED point
energy savings and refrigerant charge amounts.
The chiller boasts excellent efficiency of COP
7.0 and IPLV of 12.0 at AHRI conditions.
Additionally, the lineup offers a capacity range
of 260 RT to 1100 RT for single compressor and
from 520 RT to 2200 RT for dual compressor
based on conditions of the Air Conditioning and
Refrigeration Institute (AHRI) standard.
“Our next-generation solutions are what the
HVAC industry needs today. With the rise
of smart cities and green
buildings in the UAE and in
the region, the demand for
the best solutions places
LG at the forefront of the
nation’s most promising
residential, commercial and
industrial applications. We
are committed to products
that are not only cutting edge
and durable, but also strictly
comply with the nation’s
energy efficiency regulations
laid down by government and
green building policy makers,”
said Mr. Yong Geun Choi,
President of LG Electronics
Gulf.
also reduces maintenance costs for the user
and provides reliable and cost-effective air
conditioning. Electromagnets levitate the
compressor shaft, allowing it to rotate without
contact. By eliminating the mechanical contact
and the losses that occur with oil-lubricated
bearings, the magnetic system from LG reduces
energy use and costs significantly.
Without the need for oil lubrication, the system
also improves heat transfer efficiency in the
evaporator and condenser. In addition, the
system’s vibration and nearly friction-free
performance capabilities enable extremely quiet
operation with a low noise level of 73db (A) at
full-load condition.
The permanent magnet motor at the heart of
this LG solution is more energy-efficient than
induction motors at full and partial loads, and it
offers a higher power factor and lower current
draw thanks to LG’s own VSD technology with
high power factor (> 0.95) and low harmonic
distortion with pre-installed AC/DC reactor (THDv
< 5%).
The innovative LG technology
HVACR Leaders • July 2017
35