NordIQ GĂśteborg AB
Intelligent Sub-stations save money, energy and environment
Dr Peter GummĂŠrus, 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 ? Stable temperature = low energy consumption
Intelligent control = stable temperature Tidsvariationer i inomhustemperatur °C 25
23
21
19
17
15
13
9
11
7
5
Ti m
3
15 e
More information = better energy work
Konventionellt Softcontrol Acceptansnivå
20
1
Easier adjustment = better adjustment
h
Trad °C 80 20 -20
0
Q rad kW
20 T ute Q rad
200 0
-20
Q egenuppvärmning
0
20 T ute
Tinne Q väggtransm
Tute
Adjust power signature from statistics Tindoor vs TAmbient
Tindoor 28
26
24
22
Internal heating 20
18
16 -10
0
10
20
Balance temperature
TAmbient
This is District heating Sub-station
Internet
Two independent evaluations Pilot project Swedish Energy Agency Gävle Energi, Familjebostäder, Göteborg Energi, Svensk Fjärrvärme, Fjärrvärmebyrån
Jägarg, Gävle, 28 lghS Köpmannag, Gävle, 39 lgh Jökelv, Gävle, 76 lgh 177 kWh/m2 112 kWh/m2 156 kWh/m2
Kaplansg, Gävle Rävpasset, Gävle, 60 lgh 47 lgh, 172 kWh/m2 141 kWh/m2
Gröna Vallen, Göteborg 120 lgh, 192 kWh/m2
Result: -12% average energy consumption 12 degrees lowered return temperatures Lower power demand
Comparison conventional vs lNordIQ New conventional substation 2001. NordIQ substation 2004 Result: Energy total
Ny konv +/- 0
NordIQ -14%
Energy heat Return temp winter
+/- 0 -11°C
-26% -13°C
EnergyEfficiency-Process Energy analysis
Analysis 1
Installation Commissioning
Measures 1
Surveillance and control Adjustments Measurements
Operation year1
EnergyFollow-up
Analysis 2
Substation Radio sensors Vacum deair unit
Åtgärder år1 Åtg
Flow adjustment
Driftoptimering Idrifttagning av fjärrvärmecentraler
�Det finns ingen energibrist bara effektivitetsbrist� prof Sven Werner