YIA Water-Cooled Single Stage Absorption Chiller

Reduce waste energy and get the efficient cooling you need with our YIA Absorption Chiller from YORK®. At Johnson Controls, we've engineered this single-stage absorption chiller to feature a rugged, industrial grade design with user-friendly microprocessor controls designed to increase reliability and enhance performance.

With the flexibility to capture waste hot water or steam, natural gas and more to produce efficient cooling and even solar cogeneration, the YIA Absorption Chiller is ideal for any application where waste energy is produced.

• Operation Flexibility – Captures waste hot water or steam, natural gas, or renewable sources to produce efficient cooling, including solar. Check out Solar Cogeneration [insert link] to learn how the YIA fits in this application.
• Highest Reliability – Built with the highest quality of materials to offer long uptime, including pumps that operate for over 75,000 hours.
• Very Simple and Extremely Smart – The OptiView Control Center offers ease of operation with multiple data outputs. Also features the SmartPurge function that automatically purges the system when required.

Absorption chillers using lithium bromide as an absorbent have
proven to be a cost-effective and an environmentally responsible
alternative to chillers using CFC (chlorofluorocarbon) refrigerants.
However, if not properly controlled, lithium bromide is corrosive.
Therefore, steps need to be taken to protect the machine against
premature component failure that can result in increased maintenance
costs, unproductive downtime and shortened machine life. What
follows is an explanation of the need for corrosion inhibitors,
and evaluation of alternatives and a demonstration of why
ADVAGuard® 750 is the superior alternative.
Get a head start on corrosion
Corrosion brought on by lithium bromide starts very early in
the operating life of the chiller. Therefore, a corrosion inhibitor
must be present in the solution prior to commissioning
(or start-up). In the absence of an inhibitor, the corrosion
generates hydrogen gas. This gas, unless purged, will
adversely affect chiller performance.
Generally speaking, corrosion inhibitors promote the formation
of an oxide film, magnetite. It is this stable oxide layer that helps
to minimize corrosion in the machine. Fortunately, the magnetite
film forms on the steel surfaces in the vessel during initial
operation of the unit.

Maintain protection throughout machine life
To ensure the stability of this film, proper inhibitor levels must
be maintained throughout the operating life of the machine.
Unstable oxide films can lead to an increase in corrosion rates,
resulting in decreased unit life and poor system performance
from excessive hydrogen generation. An unstable film can also
result in rapid inhibitor depletion causing contamination of the
lithium bromide solution. The contaminated solution will then
need to be filtered, adding to unit maintenance costs.
All corrosion inhibitors are not equal
Customers who have experience with absorbers can relate
to the importance of a corrosion inhibitor. But far too often,
this experience leads to the misconception that all inhibitors
offer the same level of protection. Available corrosion inhibitors,
while effective in certain areas, can't offer complete protection,
for instance:
• Molybdate — currently the most commonly used inhibitor —
suffers from limited solubility in the lithium bromide solution,
making it difficult to maintain a stable concentration of
molybdate in the solution.
• Chromate inhibitors contain hazardous chromium compounds,
which are potential carcinogens.
• Nitrate inhibitors typically generate ammonia, which may
result in destructive stress cracking of the copper and copper
alloy tubes. Ammonia also acts as non-condensable gas,
which affects chiller performance.
Why ADVAGuard 750 is unsurpassed
Where other inhibitors fail, ADVAGuard 750, developed by the
lithium experts at FMC corporation, performs — time and again.
Available exclusively from Johnson Controls, it is an inorganic
corrosion inhibitor that provides superior corrosion protection.
ADVAGuard 750 is effective over a wide range of temperatures
as well, facilitating use in single-effect, double-effect and tripleeffect
machines that use lithium bromide as an absorbent.

Economic Analysis of
Hybrid Chiller Plants
About the Author
T
By Brian Smith
Brian Smith is a product manager for the
Engineered Systems group of York International,
York, Pa.
raditionally, chiller plants in large facilities consisted of constant-speed,
electric-drive centrifugal chillers because they were the least expensive
and most efficient option. Although natural gas was cheaper
than electricity on a $/Btu basis, the price difference wasn’t sufficient
to offset the efficiency and capital-cost differences between electric
and non-electric chillers.
In the past few years, the
metrics have changed. Today,
hybrid chiller plants using
multiple chillers and different
energy sources are being considered
in many applications.
What has changed?
A significant factor is the
new time-of-use rate structures
that electric utilities are implementing.
While these new rate
structures vary among utilities,
users generally pay a lower rate
when electricity demand is low
(off-peak periods) and a much
higher rate when demand is high (onpeak
periods).
For example, some utilities have
moved to real-time pricing (RTP), which
is a pricing schedule where rates are determined
a day or two in advance of their
use. RTP rates eliminate or reduce demand
charges. However, their presence
is felt in the peak pricing of electricity.
High on-peak prices are the primary
means for electricity producers to recoup
the cost of their peaking plants. With RTP,
the price of electricity fluctuates with
ated because they use multiple energy
sources. In markets where high on-peak
electricity rates exist and natural gas
prices are low, a combination of electric
and non-electric chillers may make the
most sense from a long-term economic
perspective.
This article tries to answer the question,
“How high must electricity
prices be to justify a hybrid
chiller plant?” In the following
economic analysis of hybrid
chiller plants, we first established
a baseline of relative
chiller efficiencies and capital
costs, according to data from
multiple manufacturers. Next,
we selected an industrial user
rate for natural gas, which we
held constant throughout the
analysis. Then, we varied the
peak price of electricity to test
the sensitivity of various chiller
combinations to progressively
higher on-peak electric prices. Finally,
we analyzed life-cycle costs, comparing
the operating cost savings to the
additional capital costs. From these calculations,
we drew some general conclusions
about hybrid chiller plants that
will help engineers evaluate their feasibility
from a long-term economic perspective.
market demand and the weather, because
high demand for electricity and warm
weather tend to be synchronous.
Thus, owners, managers, and designers
of large facilities exposed to these
rate structures are recognizing that the
biggest opportunity to reduce energy
costs is to reduce the high-cost, on-peak
use of electricity by their HVAC systems.
In non-residential facilities, chillers are
one of the largest energy users, so they
are receiving a lot of attention.
Hybrid chiller-plants are being 

York (Wuxi) air Conditioning and Refrigeration Co. Ltd, Located in Wuxi National High-tech Industrial Park, Jiangsu province, China. Covers an area of 60000 square meters, of which the heavy machine factory building takes up 14,000 square meters. At present, the company has about 500 staffs, in the field of large-size units. York Wuxi is the largest manufacturer in Asia –pacific region with an annual output of more than 3600 sets. Its products not only top on market share in China, but also see tremendous growth in export in recent years.

York Wuxi has six production lines in total, of which five are automated lines, including one air-cooled screw production line, one large-size water-cooled screw unit production line, one small-size water-cooled screw unit production line, and two centrifugal unit production line. All production line adapt the DFT technology, being the first in the industry. The entire work process is compact and rational. With the efficient management method (such as four-color light), these lines have become the most compact, most efficient and most advanced production line in the industry.

York Wuxi is equipped with globally advance equipment in every step of its production process, including:

Most advanced plasma digital cutter which can be used under water

Efficient digital plate bending machine with a roll length up to 4.8 meters

LINCO DC submerged arc welder imported from USA which is the most advanced equipment in the world.

Most advanced digital drill press in the industry.

Four large-sized chiller comprehensive performance test branches, (test capacity per set up to 2000 cold tons, for 10KV high voltage tests and frequency conversion tests), presenting the most advanced level in China.

YORK (CHINA) introduced the Performance Excellence Mode since the beginning of its operation. This mode adopted by most world-class enterprises focuses on the customers. It learns, meets and exceeds the customers’ needs and serves society through its human-oriented strategy and corporate culture. Based on the effective QEHS management system and advanced management tools (e.g. six-sigma).YORK (CHINA) consolidates its leading status in the industry.

1.   YORK RESEARCH AND DEVELOPMENT

In December 2004, to provide high-quality and competitive air conditioning products and refrigeration equipments to the Asia-Pacific region and on the parts of the world, YORK set up the YORK Asia Pacific research and development center in

Wuxi.

The center has the most advanced software systems, highly qualified professionals, and various test equipments and systems. The air-cooled test bench, unique in China and the largest in the

Asia-Pacific region, which has complete spring base for the equipment vibration test, can lower the noise to 20db by means of muffle devices. It also can carry out the working environment temperature simulation test by changing the indoor temperature via air conditioning and refrigeration system.

Since its establishment, the R&D center is dedicated to development efficient, energy saving, environment friendly products with independent intellectual property and unique technology and to the research of thermal conductivity, noise vibration and reliability to meet the needs of refrigeration &air conditioning in China and even the entire Asia-Pacific region. At the same time, the R&D center is also working closely with YORK international’s R&D division to develop money advanced products that can meet the global needs, In fact, innovation and renovation of many core technologies are happening in the Wuxi center.

2.   YORK SEVICES INTRODUCTION

York Air Conditioning & Refrigeration Service Centre was established in 1993 in Shanghai. The Service Centre is now having stations in Beijing, Nanjing, Guangzhou, Xiamen, Wuhan and Shenzhen, and service representatives in Shantou, Changsha, Chengdu, Jinan, Dalian, Harbin and Hangzhou, and so on. Using our established service center networks throughout China, we are able to provide full after-sales services to all our customers in China.

At the same time, the service center is having a bonded spare parts warehouse in Shanghai. The spare parts warehouse will serve the spare part needs for our customers with minimum delivery time.

Qinhao Zhan

HVAC&R Engineer

Refrigeration and Process Systems

China Refrigeration (York by Johnson Controls)

Mobile:+86 13818154378  18625150627

QQ:    826554493

862417098

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