Chiller Details - Salvex

YIA
YORK IsoFlow
Absorption Liquid Chiller
COOLING CAPACITY
422 to 4840 kW
Environmental Considerations
Traditional electrically driven chillers generally use halogenated
refrigerants, which can cause ozone depletion and have a high global
warming potential. The YIA range uses the most environmentally safe
refrigerant - WATER. The absorbent is lithium bromide. That
water/lithium bromide solution has no global warming effect. It is noncaustic,
non-toxic and non-flammable.
In waste heat applications the YIA chillers could minimize the carbon
dioxide emissions of the a complete energy system because no fossil
energy carrier is used.
By using the environmental friendly ADVAGuard 750 inhibitor the
internal corrosion rate and hydrogen generation is up to 8 times less
than using lithium molybdate.
General
The YORK IsoFlow Absorption Chiller is completely factory packaged,
including upper and lower shell assemblies, solution heat exchanger,
hermetic solution and refrigerant pumps, microprocessor controls and
all interconnecting piping and wiring. All control and safety devices
are mounted and wired. The purge pump, flow switches, modulating
valve and lithium bromide charge are shipped loose.
The vessels and components are, as far as necessary, manufactured
and approved according to valid codes.
Hot water units
Hot water units can operate with entering water temperature from 80
to 128°C.
YIA
The YIA Absorption Chiller introduces a
revolutionary system of unit controls and
mechanical devices designed to keep the
chiller running in even the most extreme
circumstances. The traditional problem of
crystallisation is overcome by a proven blend
of new and old technology. Additionally the
chiller contains a host of other features
designed to give the unit a long, trouble-free
life. The result: the most versatile, safest and
most reliable single effect absorption chiller
on the market today.
YIA chillers are available from 422 to 4840
kW (from 150 kW with low temperature hot
water) using either low pressure steam or hot
water. With a COP up to 0.72 they are an
economical alternative to usual compressor
water chillers. Especially in using waste heat
the YIA chillers can lower overall system
operating costs.
Applications particularly well-suited to the
YORK Millennium absorption chiller include
the following:
• Cogeneration
• Waste heat recovery from diesel or gas
engine jacket water
• Turbine air inlet cooling
• District Heating and cooling installations
Steam units
Steam units can operate with a steam pressure at generator inlet from
0,2 barg to 0,95 barg. Negative steam supply pressure on special
reqest.
Refrigerant cycle
The YORK YIA high efficiency single-stage absorption refrigeration
cycle uses water as the refrigerant and lithium bromide as the
absorbent. It is the strong affinity that these two substances have for
each other that makes the cycle work. The entire process occurs in
hermetic vessels in a near complete vacuum.
ISN Millenium Control Center
The Millennium control panel combines the very best in chiller
protection with the optimum in system efficiency. As standard
equipment on all chillers it is a major development in absorption
chiller technology, providing the most precise and reliable control and
safety.
Vital chiller operating information is shown on the 40 character
alphanumeric display. All information is in clear language with
numeric data provided in metric or imperial units.
The control panel automatic capacity control automatically varies the
steam flow rate or the hot water flow rate using a fuzzy-logic control
algorithm to maintain the programmed setpoint for the chilled water
leaving temperature in the load range between 10% and 100%.

~70°C
Condenser
~70 °C
~95°C
to~4°C "
Flow Diagram
tc~45°C
Generator
Evaporator
Absorber
ta~35°C
~50°C
Tower Water Out ~37°C
Heat
Medium Out
Heat Medium In
6 °C
Chilled Water
12 °C
~32,5°C
Steam or
Hot Water
Tower Water In ~27°C
Refrigerant (Water)
Steam or Hot Water
Diluted Solution (LiBr)
Concentrated Solution (LiBr)
Tower Water
Chilled Water
Early Warning System
The integrated early warning systems warns before a
safety shutdown of the unit and limits heating input rate
supply until correcting actions had been taken. This
system guarantees a stable operation even in
abnormal operating conditions.
Automatic Decrystallization
Each IsoFlow absorption chiller is delivered with a
protection system that quickly eliminates any minor
crystallization that may occur under extreme conditions.
I the unlikely event of a problem, a control-center signal
immediately opens the stabilizer valve, sending pure
water to dilute the most concentrated solutions in the
machine. Additionally the Automatic Decrystallization
Pipe send hot solution to warm the solution heat
exchanger. This redundancy helps to ensure safe
operation of the unit.
Cooling Capacities
and Physical Data
Hermetic Pumps
The unique construction of YORK's hermetic pumps
ensures low energy consumption and long trouble-free
operation. Service inspections are usually carried out
every 50000 hours. Maintenance of the pumps can be
carried out quickly and easily due to built-in isolation
valves ahead and behind each internal pump.
Dimensions
Cooling mm Operating
Model Capacity 1 Weight kg*
kW Length Width Height
1A1 420 3720 1760 2320 4950
1A2 550 4330 1420 2320 5500
2A3 600 4940 1420 2320 6130
2A4 720 5550 1420 2320 6590
2B1 830 4940 1580 2640 7900
3B2 960 5550 1580 2640 8540
3B3 1090 6160 1580 2640 9490
4B4 1170 6770 1580 2640 10490
4C1 1280 5550 1770 3020 11400
5C2 1440 6160 1770 3020 12260
5C3 1570 6770 1770 3020 13620
6C4 1820 7530 1770 3020 14760
7D1 1990 6160 2110 3540 17890
7D2 2170 6770 2110 3540 19840
8D3 2480 7530 2110 3540 21800
8E1 2790 6870 2290 3840 24110
9E2 3190 7630 2290 3840 26830
10E3 3380 8390 2290 3840 29790
12F1 4040 7630 2480 4240 35550
13F2 4340 8390 2480 4240 39050
14F3 4840 9150 2480 4240 41140
Proven Design
YORK has been manufacturing
single stage absorption chillers
since the late 1950s. With over
3,000 units installed worldwide,
YORK has a level of
experience with the design and
application of single stage
absorbers that is the best.
The proven industrial-grade
design with YORK's renowned
Millennium controls combine
to provide the customer with the
highest level of performance
and reliability available today.
YIA
1
Those values are valid at following conditions
Chilled Water Temperatures (in/out) 12.2/6.7°C
Cooling Water Temperatures (in/out) 29.4/39.4°C
Hot Water Temperatures (in/out) 115/109°C
Saturated Steam Pressure 0.8 barg
Please ask your local YORK-office for other conditions