Carrier Refrigeration

ContainerLINE November 2017 issue

Carrier Refrigeration

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Naturally Colder! NaturaLINE ® Unit Now Achieves -40 C The natural refrigerant that made the NaturaLINE ® unit the leader in terms of reduced global warming potential (GWP) now also enables it to surpass other container refrigeration systems in terms of frozen performance. The new bottom line: -40 degrees Celsius. This combination of exceptional deep-frozen performance and sustainability results from refinements Carrier Transicold made to the NaturaLINE unit's control logic. The fine-tuning takes full advantage of the unit's innovative design and the strong thermal attributes of its carbon dioxide (CO 2) refrigerant to achieve this frigid new benchmark. "The -40 Celsius capability can help shipping lines – especially those seeking environmentally responsible solutions – to provide enhanced offerings for customers who need colder frozen temperatures for maintaining quality attributes of some premium cargoes, like ice cream, shrimp, sushi and other seafood, over lengthy voyages," said Jim Taeckens, senior product manager, Global Container Refrigeration, Carrier Transicold. "Fleets that want to provide deep-frozen capacities using a system reliant on a refrigerant with a GWP thousands of times lower Making Sustainable Choices The NaturaLINE unit now achieves a frosty -40 degrees Celsius. As a natural leader, Carrier Transicold is committed to sustainable principles that protect our planet and its people. Sustainability starts in manufacturing, where our Singapore factory continually reduces waste, water usage and energy consumption. Our products are designed to drive down energy demand, which helps our customers save fuel, reduce operating costs and improve carbon footprint. Also, some of our products have the ability to be recycled when they reach the end of their service life. The selection of refrigerants also calls for sustainable choices. A quarter- century ago, following the landmark Montreal Protocol, Carrier led the industry conversion to non-ozone depleting refrigerants, pioneering the use of R-134a. Similarly, our efficient NaturaLINE ® unit today offers a direction away from refrigerants with high global warming potential (GWP) through its use of the nonflammable natural refrigerant carbon dioxide (CO2) with a GWP of 1, the lowest possible number in container refrigeration. When it comes to container refrigeration, some have suggested the Total Equivalent Warming Impact (TEWI) of the system is a more appropriate measure as a part of sustainability than the GWP of the refrigerant. TEWI represents the warming impact of direct and indirect factors – direct being the refrigerant GWP and indirect being emissions related to the energy consumption of the unit. It is important to recognize that the energy consumption of every model is different even though they may use the same refrigerant. At any given set of operating conditions, a Carrier unit using R-134a is likely to be different from a competitor's unit using the same refrigerant. One cannot associate TEWI solely with a refrigerant. We agree each is important, and the NaturaLINE unit performs exceptionally well in both areas. However, it is essential to understand that a single numeric TEWI is an elusive target for systems that operate at different temperatures and traverse a wide range of ambient conditions creating an array of complex variables that will not be relevant to all shipping lines, cargoes, routes and hours of operation. Owing to this variability, no appliance industry, mobile air conditioning manufacturer, commercial refrigeration manufacturer or association uses TEWI to rate the environmental performance of specific products or units. Claims sometimes found in the industry about the TEWI of container refrigeration systems are based on theoretical calculations of hypothetical systems – numbers that were reported well before the Carrier engineering innovation that resulted in the efficient NaturaLINE system or any other natural refrigerant system that has yet to be introduced. The sustainable standout NaturaLINE unit also excels in other ways. The adjacent story reports that it now achieves a deep-frozen benchmark of -40 degrees Celsius. It also offers exceptionally tight temperature control, and customers comment favorably on its quiet operation. Plus, the use of a natural refrigerant provides shipping and leasing customers a hedge against shortages and price increases of traditional high-GWP refrigerants, without fear of regulations, phasedowns and the need to change again in the future. With efficiency and great performance, the sustainable choice is easy! Willy Yeo Director of Marketing Global Container Refrigeration 2

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