ASHRAE Journal - December 2012 - 64

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Trane Expanded Centrifugal Chiller Capabilities Deliver Efﬁciency, Low Cost of Ownership
The expanded line of Duplex™ (dual compressor) EarthWise™ CenTraVac™ centrifugal chillers by Trane deliver greater energy efﬁciency and cost savings for applications requiring higher tonnage capacities. The options and extensions recently added to the Trane Duplex line include: Adaptive Frequency Drives, Transformer Packages Trane® Duplex chillers now feature lowvoltage, unit-mounted Adaptive Frequency™ Drives (AFD) on units up to 3,000 tons. A new Trane-supplied transformer package allows these low-voltage AFD chillers to operate in medium-voltage applications, signiﬁcantly reducing unit and installation costs as well as square footage Trane Duplex CenTraVac chillers with Adaptive Frequency Drive (AFD), comrequired in airports, universities, medical bined with a Trane custom transformer package, deliver signiﬁcant cost savings facilities and industrial applications. by enabling a low-voltage unit-mounted AFD chiller to operate in applications that normally would require a medium-voltage solution. Auxiliary Condensers The expanded Duplex chiller range also includes several new options previously some or all chiller operation to nighttime run hours, reduconly offered with single-compressor CenTraVac chillers. ing utility bills by running the chiller at a time when power Trane Duplex chillers are the ﬁrst and only dual-compressor demand is low. centrifugal chillers in the industry capable of utilizing an In areas with real-time utility pricing, ice storage proauxiliary condenser to recover waste heat that would norvides ﬂexibility, enabling companies to quickly turn off the mally be rejected to the cooling tower. The excess energy chiller and reduce overall energy draw. Ice storage chillers preheats water for other processes, such as boiler makeup serve a variety of applications, including healthcare facilities, water, or for domestic hot water to serve laundry, showers or universities, district cooling plants and more. swimming pools. In addition to capturing energy that would otherwise be Environmental Product Declaration, Green Seal Certiﬁcation lost, the auxiliary condenser typically receives entering water In addition, all Trane CenTraVac chillers (ranging from 120 temperatures lower than the standard cooling condenser, tons to 3,950 tons) have earned an Environmental Product which increases chiller efﬁciency. It also improves overall Declaration registration, in accordance with ISO 14025. They system efﬁciency by reducing heating requirements on the are the only commercial chillers in the world to have earned boiler. this designation. The declaration recognizes CenTraVac chillThe new auxiliary condenser option enables Trane ers’ low energy consumption and emissions in addition to Duplex chillers to be used on applications that require more other factors. CenTraVac chillers are also the only Green Seal than 1,500 tons, and is ideally suited for healthcare facilicertiﬁed product under the Green Seal Standard for Electric ties, residences such as dormitories and condominiums, and Chillers. hotels and casinos. Trane is a leading global provider of indoor comfort systems and services and a brand of Ingersoll Rand. Ice Storage Trane also expanded its range of Duplex chillers with ice storage, including capacities up to approximately 2,500 tons. To learn more about the complete offering of Duplex chillers with ice storage enable facilities to shift Trane EarthWise CenTraVac chillers, visit trane.com/ctv.

ASHRAE Journal

December 2012

ASHRAE Journal - December 2012

Table of Contents for the Digital Edition of ASHRAE Journal - December 2012