User Manual

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Siemens Schweiz AG
Infrastructure & Cities Sector - Building Technologies Division
Gubelstraße 22, CH-6300 Zug, Switzerland
Press Relations: Vera Klopprogge
Phone: [phone]
E-mail: [e-mail]
Siemens AG
Infrastructure & Cities Sector – Building Technologies
Division
Rödelheimer Landstr. 5-9, 60487 Frankfurt am Main,
Germany
deficiencies in the facilities and control strategies. The fact that in recent years the Lindner Group
had installed building automation systems in most new hotels financed by investors was very
beneficial. While energy cost increases were one motivating factor, price reductions and additional
features offered by building automation and control systems convinced Lindner’s management that
these systems had become more economical. In the case of Siemens’ current Desigo PX building
automation system, for example, most of the existing meters used in the building for energy
monitoring and control (EMC) can be integrated into the system.
Lindner’s technicians were impressed by the functional and economic benefits of the Desigo
system technology and gave preference to the Siemens building automation system for new
buildings and retrofits. A highly cooperative partnership was formed between Lindner Hotels AG
and the Siemens Building Technologies Division. Siemens’ Building Performance Optimization
(BPO) teams have since analyzed a total of seven Lindner hotels for further energy efficiency
potentials. Lindner Congress & Motorsport Hotel at the Nürburgring, which was the only new
building, presented the teams with a special challenge. Although this hotel already offered a high
level of energy efficiency, the energy experts still managed to identify additional savings potentials.
They then worked with the customer on the development of an improvement strategy that
consisted of zero-investment, low-investment and investment measures. Measures includes
optimizing the monitoring and control strategy for the chiller and its recooler, adjusting the pressure
setpoint of the air distribution network, adjusting the air flow of the ventilation systems, installing
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sensors for on-demand ventilation in the restaurant and lobby as well as investigating the use
of a weather forecast-based control function.
Saving energy through transparency
Many energy-saving processes that make logical sense have to be weighted differently in the hotel
sector. Energy saving measures that are acceptable for an urban hotel may not necessarily be right
for a convention hotel and not at all appropriate for a wellness hotel. The ability to take automated
meter readings of energy consumption and automatically generate energy reports through the
energy monitoring and control (EMC) functionality of the Desigo building automation system greatly
reduces the workload of hotel technicians. EMC also opens up entirely new opportunities for
efficiency analysis, for example displaying electrical load curves for different consumers. Not only
does this offer a basis for establishing additional efficiency measures but it also allows empirical
values to be derived for new hotels to be built in the future.