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16KW Airsys Optima INV DXW cooling system without dry cooler and pump group for data centre and telecom

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Vendor:Airsys Deutschland GmbH

Airsys is a global cooling product and service vendor, with 25 years experience...

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Optima INV DXW 16V1A1 + 1x AMAE6

The OPTIMA series from Airsys was specially developed for use in
small, medium and large data centers or for process cooling or in
Clean room applications.

OPTIMA devices are designed for continuous operation with maximum reliability and have a high-precision temperature and humidity control.

OPTIMA INV-DXW devices have EC fans and inverters
Compressor technology. A water-cooled circuit and external dry cooler are used to minimize the refrigerant charge for optimized environmental compatibility.

1 Precise control

The control accuracy for temperature is ±1° C and for relative
humidity is ±5%.

7 Scroll Compressor

OPTIMA (DXA & DXW) units are equipped with scroll
compressors which produce less vibration, lower noise and
greater efficiencies.

2 Various supply air arrangements

Supply air arrangements include top discharge (upflow)
and bottom discharge (downflow). Return air arrangements
include top return, bottom return, front return and rear return,
to meet all site requirements.

8 Isolated control panel

All the electrical and control components are installed in an
isolated control panel with orderly wiring and clear labelling,
meeting the IEC standards.

3 Corrosion-proof

The unit framework is provided with a corrosion protection
treatment. The treatment is sufficient to provide protection
for a 15 year life cycle for inland installation. If necessary,
the treatment for sea air environment can be supplied as an
option.

9 Forced dehumidification system

The dehumidification process occurs through decreasing
the evaporator coil surface temperature or reducing the air
flow across the coil. Variable-capacity systems come with
power monitoring tools that are displayed locally, in addition to being available via remote access. Power monitoring can be used to measure efficiencies across systems, regions and networks. This feature can be used for predictive maintenance.

4 Easy maintenance

The technical compartment housing the compressor,
humidifier, control and safety devices is separated from
the air flow, enabling ordinary service and preventative
maintenance to occur during operation.

10 Electrode Humidifier (optional)

An electrode humidifier, controlled by a microprocessor,
monitors and adjusts the humidifying capacity precisely,
while the water quality monitoring and wash extends the
maintenance interval, prolonging the working life of the unit.

5 EC fan

Highly efficient EC fans are supplied with OPTIMA products.

11 Electric Heater (optional)

The construction of the electric heater element (stainless
steel pipe with wrapped fins) allows for a reduced operating temperature, therefore eliminating ionisation, and avoiding unpleasant odors

6 Air filter

A washable, easily maintainable and durable G4 class air
filter is a standard configuration for the OPTIMA range. With
optional air pressure switch, a clogged filter alarm can be
triggered when the filter is dirty.

12 Self-diagnosis

All the microprocessor-connected components are
continuously monitored and controlled and, in case of
malfunction, the unit is shut down and the fault is shown on the display.

Functional scheme

Optima.INV-DXW

Water cooled direct expansion system (DXW)

The water cooled direct expansion system (DXW) operates similarly to the air cooled system, however the refrigerant transfers
the rejected heat to water via a plate heat exchanger, which is then discharged to the outside air via a dry cooler or cooling tower.

No additional refrigerant pipework is required on site, only for the water circuit, making the installation significantly easier. The
internal refrigerant circuit is sealed and pressure tested prior to delivery, with the unit coming with a holding charge of nitrogen.

Water cooled direct expansion with indirect free cooling (FC.DXW)

The FC.DXW system combines DXW mechanical cooling with indirect free cooling (FC); the two cooling modes sharing the same water
system.

When there is a call for cooling, and the difference between indoor and ambient temperatures is acceptable, the FC unit will run to provide
indirect free cooling through rejecting heat via a dry cooler or cooling tower. Only when free cooling capacity is insufficient to meet the
cooling demand will the DXW unit start up mechanical cooling. The FC circuit enables a significant reduction in compressor run hours for the DXW system saving significant energy.

Water cooled direct expansion with double cooling source (DC.DXW)

The DC.DXW unit is a dual-circuit system offering DXW (water-cooled) mechanical cooling and chilled water cooling (CW). It
contains two independent cooling circuits with different heat-rejection methods for redundancy.

Technical specifications

A selection of our references

Price including assembly:

Optima INV.DXW Brochure (AIRSYS-OPTIMA-INV-DXW-SB-V1.0.pdf, 10,538 Kb) [Download]

Optima INV.DXW Brochure Deutsch (AIRSYS-OPTIMA-INV-DXW-SB-V1.0_German.pdf, 10,544 Kb) [Download]

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