Controls News 13
60
Reference projects:
Monitoring and control network of a major city
For 5 years, the canton of Zurich has included the
canton’s major users of energy in an energy saving
program. The property management organization of
the City of Zurich manages more than 1600 buildings as
a representative of owners (schools, old people’s homes,
nursing homes, administrative offices, sports facilities,
swimming pools, etc.).
As part of a major energy consumer agreement with
the canton, the decision was made to record energy in-
formation for the 91 largest of these buildings and to
analyze this information accordingly (consumption of
water, electricity and heat) with the aim of achieving
an average annual saving of 2%. This aim was achieved
within the first 4 years.
Viscom Engineering AG won the tender with Saia® PCD3
controllers, data logging by means of CSV files and
web services. Saia® PCD3 collects data from 10–60
measurement points using M-Bus and pulse input
Energy recording in the City of Zurich
Zurich – the largest city in Switzerland. IMMO (the property administration organisation
of the City of Zurich) manages more than 1,600 buildings, of which up to 200 are fitted
with energy recording equipment from Saia-Burgess Controls.
Author: André Gross
points, generates a file for the day in CSV format using
these measurements and displays the current values on
an integrated website. Once every night, an external da-
tabase «CEBU» retrieves the file for the day from each
branch office and integrates it into the database. This is
then used to analyze the energy consumption of the dif-
ferent buildings and to compare buildings in the same
portfolio. At present, 110 Immo boxes (property boxes)
are already installed. This figure could rise to approx.
200
boxes in the final phase. The City of Zurich has been
able to enhance existing buildings with energy data
logging equipment and has now been able to use this
information to take specific energyefficient measures.
These data are permanently reviewed and compared.
This helps to quickly detect and correct faults and
irregularities.
Conclusion: Cost and energy savings are also beneficial
for tax payers!
–
Visualization via integrated
Saia® PCD web server
– .
csv file retrieved from
database of all 200 Saia® PCDs
once a day
M-Bus meter
Data saved on a Flash
card as .csv
View of the inside of one of the 200
immo boxes
– 1
× Saia® PCD3.M5540
–
Connection for max. 20 M-Bus meters
– 32
digital inputs for plus meters
Saia®system integrator
has developed, implemented and
supported a monitoring
system in operation.
en1360
Stadt Zürich
Central database
«
CEBU»
