INDUSTRIAL REFRIGERATION
ductwork, keeping the NH3 stage isolated on the roof and leveraging the non-toxic natural CO2 to deliver high-tonnage refrigeration in the conditioned space.
To help alleviate potential ammonium
carbamate concerns, the CO2/NH3 helix style heat exchanger features stainless steel construction
for corrosion resistance and long life. Multiple helical coils in a compact design allow for expansion and contraction of tubes during large changes in temperature and pressure with very low resultant strain and stress, thereby reducing the risk of failure and leaks while delivering a large heat transfer surface in a small volume. The self-contained, modular unit essentially serves as the system’s mechanical room, enabling installation and efficiencies typically not found in traditional systems. Existing facilities can even install this system while their legacy system is still running. Installers simply position the unit in the desired rooftop location, connect the ductwork, an d commissionin g can potentially take place in as little as a few days. Then, as soon as the facility manager is ready, they can simply shut down the old system and let the new system assume refrigeration duties, minimizing or eliminating disruption in cold storage operations.
From regulations and sustainability objectives to energy efficiency and operating costs, cold storage operators are faced with increasingly complex refrigeration decisions. Natural
address many of these challenges, regardless of their operational requirements.
Many brownfield facilities are facing retrofits in the near future, typically because they’re either using an aging high-charge ammonia system or an HCFC-based system such as R22. New, all- natural systems provide opportunities to avoid the risk and documentation requirements of high-charge ammonia systems and make for a seamless transition away from R22 refrigeration and its associated challenges, including the rising cost of refrigerant, environmental concerns, and the potential for a global phase-out.
New greenfield facilities seeking to completely avoid these complexities may find that these
Excellent part load effi ciencies
HELIOS ACHX-B SERIES Air-Cooled Horizontal Screw Chiller
WCFX-V SERIES Variable Speed Water-Cooled Screw Chiller
To learn more about Dunham-Bush
CHILLERS To learn more
re about Dunham-Bush chillers and heat emitters contact us today
CHILLER RANGE
The simplicity of this drop-in, plug-and-play design also lowers maintenance requirements while improving serviceability throughout the l ifecycle.
new CO2/NH3 cascade system architectures help meet many of their long-term operational
requirements, including low-charge ammonia, simplicity of a pre-designed, pre-packaged system, eco-friendliness and efficiency, and future regulatory compliance and market acceptance.
refrigerant systems such as the modular CO2/NH3 cascade unit help industrial cooling businesses
For facilities simply looking to expand on their existing operations, a modular approach offers a no-fuss alternative without the complexity of trying to integrate a new refrigeration system into their existing one or expandin g their current engin e room.
The spread of natural refrigerant systems into industrial cooling is further proof of their viability across the gamut of refrigeration markets and applications. From low-charge propane in stand-alone systems to a variety of CO2 architectures in food retail, to the
introduction of CO2/NH3 systems in cold storage, the market continues to seek the advantages
that natural refrigerant systems can provide. As manufacturers continue to answer the call, look for naturals to be featured in more refrigeration system innovations in the coming years.
FROM DUNHAM-BUSH
• Air and water-cooled, scroll, screw and centrifugal compressor models • Air-cooled chillers with cooling capacities from 35–1,650kW • Water-cooled chillers with cooling capacities from 450–14,000kW • High effi ciencies maintained whatever the load • Low noise in operation • Full microprocessor control with touch screen displays
Dunham Bush PROMETHEUS DCLC
SERIES-M Magnetic Bearing Variable Speed Centrifugal Chiller
ZEUS ACDS SERIES Air-Cooled Scroll Chiller
ACHELOUS AVX-B SERIES
VARIABLE SPEED Air-Cooled Vertical Screw Chiller
E-mail:
info@dunham-bush.co.uk www.dunham-bush.co.uk
37 WEL COME T O THE COMFOR T Z COME TO THE COMFORT Z O NE
NEW
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