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Upgrading a District Heating Network with Modern Technologies in TOPLIFIKACIJA AD
SKOPJE
16/07/15
Siemens Building Technologies
Skopje DH
1
Upgrading a District Heating Network with Modern Technologies in TOPLIFIKACIJA AD
SKOPJE
LEGEND
GSM
Communication
B1 - Sensor QAC22
Supervision of
control centre
B1
B2 - Sensor QAE22A
A1
B3 – DRT Sensor QAE22A
B4 - Sensor QAE22A
N1
B5 – Sensor QAE22A
Y1 – Valve with Actuator VX..+ SQ..
Y2 – Primary valves with/without
spring return and limit switch VV.. + SK..
Y1
P1 - Ultrasonic Heat Meter 2WR5....
A1 – Room Unit QAW70
N1 – DH Controller RVD230
B2
p
P1
16/07/15
Y2
B5
Siemens Building Technologies
B4
Heating
Domestic Hot Water
B3
Skopje DH
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With DRT limitation, the lowest possible return temperature will be achieved
DRT = Differential of Return Temperatures
 Maximum limitation of the differential of primary and secondary return
temperatures (with indirect connections of heat exchangers)
Mode of operation:
Action:
Volumetric flow
(primary side)
TVS
District heat
flow
T
100 %
90 %
80 %
70 %
60 %
50 %
40 %
30 %
20 %
10 %
0%
Heat
exchanger
District heat
return
M
T
TRP
TRS
T
TRP -TRS
DRT
Night setback
Without DRT limitation
With DRT limitation
Heating operation
District heating controller
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Siemens Building Technologies
Skopje DH
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Saved water
volume
Upgrading a District Heating Network with Modern Technologies in TOPLIFIKACIJA AD
SKOPJE
Pre-controller
in a link system
Heating circuit
D.h.w.
28 applications
RVD230
TC35T
GSM Terminal
OZW 111
Mini M-Bus Unit
Integrated
interface for
...room unit
...control centre
...heat meter
...link system
16/07/15
Siemens Building Technologies
Skopje DH
Antennas
4
ACS 785 Software for Remote Supervision and Operation
Substations addresses
Alarm viewer
“ Scheduler “
Live Graphical display
of substations
5385O01e
2531O01e
Pop cards
5385O02e
“ Job Type Editor”
“ Parameter
Settings”
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5385O04e
16/07/15
5385O03e
“ Trend Viewer “
“ Logfile ”
Skopje DH
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Overview System Topology
GSM Communication
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Siemens Building Technologies
Skopje DH
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Versatile Communications
Integration in a control centre:
a) via M-bus (central unit OZW)
b) via telephone gateway (M-bus --> RS232)
M-bus
M-bus
Electr. limitation
via pulses
LPB
Link system;
(Substation, boiler,
ventilation….)
tool
heat meter
RVD230 and RVD240
PPS
Room unit
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Siemens Building Technologies
Skopje DH
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