NordIQ Göteborg AB
Intelligent Sub-stations
save money, energy and
environment
Dr Peter Gummérus, Development Matts Lindgren, CEO
gummerus@nordiq.se matts.lindgren@nordiq.se
+46 736 006 202 +46 736 88 99 73
1
2009-06-18

How can you save energy ? Intelligent control = stable temperature
Tidsvariationer i inomhustemperatur
Stable temperature = low energy consumption °C
25
Easier adjustment = better adjustment 20
Konventionellt
Softcontrol
Acceptansnivå
More information = better energy work 15
e
11
17
19
21
23
1
3
5
7
9
13
15
m
h
Ti
Trad °C
80
20
-20 0 20 T
ute 
Qegenuppvärmning

Qrad kW Tinne Tute
200 
Qrad 
Qväggtransm
0
-20 0 20 T
ute

Adjust power signature from statistics
Tindoor vs TAmbient
Tindoor
28
26
24
22
Internal heating
20
18
16
TAmbient
-10 0 10 20
Balance temperature

This is District heating
Internet
Sub-station

Two independent evaluations
Pilot project Swedish Energy Agency
Gävle Energi, Familjebostäder, Göteborg Energi,
Svensk Fjärrvärme, Fjärrvärmebyrån
Jägarg, Gävle, 28 lgh S Köpmannag, Gävle, 39 lgh Jökelv, Gävle, 76 lgh
177 kWh/m2 112 kWh/m2 156 kWh/m2
Rävpasset, Gävle, 60 lgh Kaplansg, Gävle Gröna Vallen, Göteborg Comparison conventional vs lNordIQ
141 kWh/m2 47 lgh, 172 kWh/m2 120 lgh, 192 kWh/m2
New conventional substation 2001. NordIQ substation 2004
Result: -12% average energy consumption
12 degrees lowered return temperatures Result:
Lower power demand Ny konv NordIQ
Energy total +/- 0 -14%
Energy heat +/- 0 -26%
Return temp winter -11°C -13°C

EnergyEfficiency-Process
Surveillance and
Energy Installation control Energy-
analysis Commissioning Adjustments Follow-up
Measurements
Analysis 1 Measures 1 Operation year1 Analysis 2 Åtgärder år1
Åtg
Substation Flow adjustment
Radio sensors
Vacum deair unit
Driftoptimering av fjärrvärmecentraler
Idrifttagning

”Det finns ingen energibrist
bara effektivitetsbrist”
prof Sven Werner