yvwa variable-speed, water-cooled, screw chillers Infinite...
Transcript of yvwa variable-speed, water-cooled, screw chillers Infinite...
york® yvwa variable-speed, water-cooled, screw chillers
Infinite chiller configurations to help you achieve your goals
ConfidenceConfidence
FlexibilityFlexibility
SustainabilitySustainability
EfficiencyEfficiency
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When electricity prices escalated, Johnson Controls pioneered enhanced tubes for our YORK chillers.
The YVWA chiller addresses four primary requirements — efficiency, application flexibility, sustainability, and confidence.
Continuing a history of engineering innovations that meet your requirements
Building requirements are constantly evolving.
To keep you ahead of the curve, Johnson Controls
has developed numerous technological innovations
for our YORK® chillers. When some refrigerants
were identified as ozone depleters, we adapted
our chillers to use compounds that are friendly to
the environment. When electricity prices began
to escalate, we developed enhanced tubes and
variable-speed drives that slashed energy use.
And when the industry was looking for ways
to recover energy, we developed a full line of
heat-recovery chillers.
To help you meet today’s challenges, Johnson
Controls designed the YORK YVWA chiller.
This cutting-edge design uses a number of
engineering advances to address four primary
requirements of building owners and designers —
efficiency, application flexibility, sustainability,
and confidence.
YORK® YVWA variable-speed, water-cooled, screw chillers
Confidence
Flexibility
25%lower energy costs
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The YVWA chiller delivers superior energy performance at all operating hours.
An investment in an optimized YVWA chiller reduces energy costs by 25%.
EFFIcIEn
cY
Finding the right balance between a chiller’s
capital cost and its cost of ownership can be a
challenge. But Johnson Controls makes it easy.
By making variable-speed technology standard
on every YORK YVWA chiller, Johnson Controls
delivers high energy performance and low
ownership cost. The base model YVWA chiller
is more efficient than the most efficient
competitive chiller.
There is a simple reason for this phenomenon.
In most places in the world, the variable-speed
YVWA chiller saves energy during 97% of
operating hours spent at off-design conditions,
which include reduced load and/or reduced
entering condenser-water temperature.
In addition, you can specify that your YVWA
chiller be built with optimized performance,
which can deliver a European Seasonal Energy
Efficiency Ratio (ESEER) that is as much as
25% better than ordinary chillers.
The bottom line: the YVWA chiller makes it
easy to balance capital cost and ownership cost.
Reduce compressor speed. Increase energy savings.
YVWA Efficiency vs. Ordinary Chiller
Ordinary ChillerYVWA Chiller
0
5
10
15
Chi
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Effici
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(EE
R)
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4
5
6
7
8
9
10
Chiller Load (%)
ECWT (°C)
ECWT = Entering Condenser Water Temperature
10 20 3040
5060
7080
90100
15.6 17.2 18.820.4
22.023.6
25.226.8
28.430.0
Ann
ual H
ours
(%
)YVWA Energy Cost vs. Ordinary Chiller
1 2 3 4 5 67
89
10Years
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50,000
100 ,000
150,000
200,000
250,000
YVWA Chiller
Ordinary Chiller
Note: 3,500 operating hours, 0.10 EUR/kWh energy rate, 800 kW design cooling load
25%
1perfect match to meet your unique needs
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FlExIb
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The YVWA chiller can also efficiently handle the high condenser pressure required for dry cooling.(Photos courtesy of Baltimore Air Coil)
The YVWA chiller can efficiently handle the low evaporator pressure required for ice thermal storage.
Many applications. One chiller.
Like all screw chillers, the YVWA chiller is capable
of handling higher pressure lift than a centrifugal
chiller. As a result, a thermal-storage application
that requires glycol to be chilled to -10°C(*), or
a heat recovery or heat-pump application that
requires water to be heated to 65°C(*), are within
the capabilities of the YVWA chiller.
However, unlike ordinary screw chillers, the
YVWA chiller has the flexibility to handle these
high-lift applications with the highest efficiencies
available. The difference is its variable-speed drive
which constantly tunes the compressor speed to
the exact lift and load requirements.
The remarkable flexibility offered by the variable-
speed technology also allows the YVWA chiller to
utilize a wide range of heat-rejection methods: in
addition to an open cooling tower, you can also
use a closed-circuit cooling tower, a dry cooler,
or an adiabatic cooler, all with the peace of mind
that the YVWA chiller is giving you the highest
efficiency possible.
(*) Min/Max temperatures may change depending on the model configuration selected.
25%smaller CO2 footprint
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Reduce direct emissions with the YVWA’s falling-film evaporator, which reduces refrigerant charges by up to 30%.(Photo courtesy of the LTCM lab of the Ecole Polytechnique Fédérale de Lausanne, Switzerland)
The efficiency of the YVWA chiller can reduce your environmental footprint. Less electricity has to be generated, which means greenhouse-gas emissions created by the power plant are reduced by as much as 25%.
Reach greener goals. Start with a smaller footprint.
Why should you pay an economic penalty for
being environmentally friendly? Unlike competitive
chillers, the YVWA chiller does not make you choose
between saving money and saving the environment.
The YVWA chiller reduces environmental impact
in two ways: directly, by managing refrigerant
charges and the potential refrigerant leak points; and
indirectly, by minimizing power-plant CO2 emissions,
which are responsible for 98% of the Global Warming
Potential associated with chillers.
To reduce the direct effect, the YVWA chiller uses
HFC-134a refrigerant, which has no ozone-depletion
potential and no phase-out date. We also reduced
the number of fitting, joints, and other potential leak
points by 35% compared to conventional compressor
designs. Plus, our proprietary falling-film evaporator
design allows refrigerant charge to be reduced by as
much as 30% compared to conventional designs.
The indirect effect is addressed through the superior
energy performance of the YVWA chiller, which cuts
the energy that the power plant needs to produce
and reduces emissions by as much as 25%.
Finally, the YVWA chiller makes it easy for you to
earn points in the LEED® and BREEAM® green-
building certification programs.
25%
20,000years of cumulative worldwide experience
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> 175,00035,000–175,00018,000–35,0004,000–18,000
Our 15,000+ service technicians in 150 countries provide chiller expertise to keep your facility running smoothly.
YORK variable-speed, air-cooled screw chillers in use, by cumulative capacity (kW).
You can be sure you are making the right choice
when you select the YVWA chiller. Our experience
is unsurpassed. Johnson Controls invented
variable-speed-drive technology for water-cooled
chillers in 1979.
We also introduced the industry’s first variable-
speed, air-cooled, screw chiller in 2004. By 2010,
our installed base exceeded 7,000,000 kW
(2,000,000 TR) in over 100 countries. With all
units combined, we have more than 20,000 years
of field experience. The YVWA chiller uses the
same variable-speed compressor, so you can trust the
chiller will perform as expected in your application.
We also offer the proven support of the world’s
largest service organization. Johnson Controls
employs over 15,000 technicians in over 150
countries, bringing decades of variable-speed
chiller experience to your door.
Nobody can tailor and tune a variable-speed,
water-cooled, screw chiller to match the
unique requirements of your application better
than Johnson Controls.
co
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Capable hands. World-class partner.20,000
700 5.39 7.64 98 4268 1405 1849 5957 245
800 5.81 8.28 97 4268 1405 1849 6336 245
900 5.70 8.39 100 4268 1405 1849 6412 245
1000 5.46 7.90 97 4268 1405 1849 6260 255
© Johnson Controls, 2011 PUBL-6881
Johnson Controls Inc, Building Efficiency, De Kleetlaan 3, Diegem Zuid - Pegasus Park, Brussels, Belgium B-1831.
Johnson Controls reserve the right, in line with continuing research and development, to amend or change specifications without notice.
Cooli
ng C
apac
ity [k
W]1
EER
100%
2
ESEE
R3
Leng
th [m
m]
Soun
d Po
wer [d
BA]
Width
[mm]
Height
[mm]
Opera
ting W
eight
[kg]
Refri
gera
nt C
harg
e [kg]
1: Cooling Capacity at Eurovent Conditions, entering/leaving chilled water temperature 12°C/7°C, ambient temperature 35°C
2: Energy Efficiency Ratio
3: European Seasonal Energy Efficiency Ratio
Technical specificationsThe YVWA chiller offers an infinite number of configurations by allowing you to mix and match from an abundance of heat exchangers and compressor sizes and speeds. This extreme flexibility allows you to pick the optimum chiller for your application without compromise. The following table shows a sample of typical YVWA chillers at standard capacity points to serve as a quick reference guide.