Carrier Chillers Cooling the New I M Pei Exhibition Building in
Berlin
The Deutsche Historische Museum in Berlin recently
made headlines for the new exhibition hall designed by
Chinese-American architect Ieoh Ming Pei and for the
opening of the permanent exhibition "Deutsche Geschichte
in Bildern und Zeugnissen,” which depicts German history
in images and eyewitness reports. The spectacular
architecture and permanent exhibitions in the modern new
building are attracting visitors from all over the
world. The optimal climate control for the protection of
the exhibits and comfort of visitors is provided by
three Global Chillers from Carrier.
Architect I.M. Pei has combined historic building
substance with contemporary design as he did with the
legendary East Wing of the National Gallery in
Washington and the spectacular annex to the Louvre
complex in Paris. The Baroque old armoury, where the
permanent exhibition with its 7,500 square meters of
exhibition space is located, is the oldest building on
Unter den Linden. Pei added a triangular new structure
to one side, with a glass foyer the same height as the
building, the facade of which merges into a glazed stair
tower. The new structure is an illuminated point of
attraction in the evenings and reflects the historic
facade of the building during the day.
A feature of the new design by I.M. Pei is the glass and
steel roofing of the armoury’s inner courtyard. The roof
covers 1,600 square meters and harkens back to an
earlier era when glass roofing protected the courtyard
between 1880 and 1945.
The Berlin branch of ABB Gebäudetechnik GmbH was
responsible for the building services engineering.
Carrier Corporation supplied three water-cooled liquid
coolers of the Global Chiller series, with a
refrigerating capacity of 606 kW each, making a combined
capacity of 1,818 kW. The cooling system is designed for
constant standby operation with a cold-water flow
temperature of 6°C to supply the air conditioning units
in the Pei building. The underfloor heating areas in the
roofed courtyard are also connected to the system and
can be operated in either heating or cooling modes.
The 30HX Global chillers are fitted with two separate
cooling circuits to ensure operational safety. Their
Power³ screw-type compressors, designed for R134a
refrigerant, have 30 percent higher performance compared
with standard compressors. The vibration-free design and
noise protection for the compression pipes ensure that
the units are especially quiet to run. An electronic
expansion valve, patented by Carrier, optimizes the
refrigerant filling so that the heat exchanger surfaces
can be utilised in an optimal manner. Each of the 30HX
Global chillers has a six-step performance control, with
a total of 18 available performance levels. This enables
considerable cost savings to be achieved in part-load
operation, which typically makes up 80 percent of
operating time for comfort air conditioning.
A Carrier systems manager regulates and monitors the
interaction of the three liquid coolers. The system
manager is integrated into the Building Management
System (BMS) of the Pei building, which in turn is
incorporated into a central BMS covering the complex as
a whole. The building services are maintained by a
facility management company.
With Deutsche Historische Museum, Carrier has extended
the list of museums using Carrier air conditioning,
which also include such famous names as the Tate Modern
in London and the Uffizi in Florence. The frescoes of
the Sistine Chapel in Rome also are protected by Carrier
air conditioning.
Email:
ukmarketing@carrier.utc.com
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