2013.gada 1.martā notika konference "Jaunā Energoefektivitātes direktīva - nozīmīgs instruments ES enerģētikas mērķu 20:20:20 īstenošanai. Būtiskākās prasības.". Video http://www.youtube.com/watch?v=bVfi2mi0B5c Konferenci organizēja Ekonomikas ministrija, Dānijas Karalistes vēstniecība Latvijā un SIA "Danfoss Latvija". Pasākuma laikā Agņeška Dukačevska (Danfoss Polija) pastāstīja par Polijas pierdze ieguldījumos energoefektivitātes risinājumos un to atmaksāšanās laiku

1. Energy saving solution
Payback time!
6 cases
With payback time
Calculations show you how fast
your investment will be repaid by
energy saving
2013

2. Reference data for Energy Saving Brochure data
Building data Type of heat
Name of the Details about
Address year of source
building substation
Name of person construction ( e.g. central Picture of
owner ( type of wheatear Data about building :
responsible type of district heating , building
( e.g. Building compensators,
Main data about building
Society name )
for project technology local boiler
anther details )
number of stories .........................
number of station ) surface on the building in m2 ………………
Energy saving solution
Building cubature in m3 ……………
number of flats ( apartments ) ……………………..
number of occupants ……….
Data gathering Unit energy prices
1 GJ - energy prices for heating in local current
Contact person from Danfoss side :
1995 1996 1997 1998 1999 2000 2005 2006 2007 2008
Prices for 1 MW ordered power for heating per month in local current
Price for heat 1m3 hot water in local currency
Energy prices
Prices for 1 MW ordered power for hot water per month in local current
Prices per 1 m2 for heating if occupants are charge by surface
Calculated total heat power for building for heating in KW ……………….
Calculated total power for hot water system in KW ……………….
Avarage yearly outdoor temperature
Information about instalation : heating and hot water Information about thermo-modernisation program
Profile of heating systems
Profile of hot water systems
Risers profile
number of TRV's DN 10mm
number of TRV's DN 15mm
System futures
number of radiators number of risers in heating system
number of risers DN 15 mm
number of risers DN 20 mm
Modernization
number of TRV's DN 20 mm number of risers DN 25 mm
number of hot water circulation risers number of risers DN 32 mm
MTCV - DN 15 number of risers DN 40 mm
MTCV - DN 20 number of risers DN 50 mm
stocktaking prices Energy consumption
design prices ( recalculation ) 1995 1996 1997 1998 1999 2000 2005 2006 2007 2008
investment prices products Energy used in GJ for heating
additioal costs Energu used in KW for heating
instalation cost Power order in MW for heating
total cost
unit prices TRV Balancing Valves Energy consumption!!!
Energy used in GJ for DHW
Zuzycie energii w KW na cele ciepłej wody
DN 15 Moc zamówiona w MW na cele ciepłej wody
DN20 Zużcie ciepłej wody w m3
DN25 Całkowite zuzycie w GJ ( cwu + co )
DN32 Całkowita moc w MW ( cwu + co )
DN40
DN50

3. Evaluation of figures
Data collection in a table
Energy usage Corrected Saving in % Saving in % due to Extra saving in % Average
Year (heating) energy usage compared to automatic balancing due to ABV in outdoor Action
[GJ] to 2,4°C 1995 valve copm. to 1999 risers (2002) temp. [°C]
1995 2084 2,4
1996 2006 1945 6,7% 2,1 TRV, HCA installation
1997 1741 1878 9,9% 3,1
1998 1760 1837 11,9% 2,8
1999 1537 1757 15,7% 3,6
2000 1505 2247 -7,8% 5,57 ∆p contr. in substation
2001 1167 1347 35,4% 23,3% 3,68
2002 1161 1348 35,3% 23,3% 3,73 ∆p contr. in risers
2003 1275 1259 39,6% 28,3% 6,6% 2,28
2004 1068 1240 40,5% 29,4% 8,0% 3,73
2005 978 1126 46,0% 35,9% 16,5% 3,66 Substation separation
2006 960 945 54,6% 46,2% 2,25
2007 676 980 53,0% 44,2% 5,38
2008 853 1248 40,1% 28,9% 5,44
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4. Evaluation of figures
Compensation to certain outdoor temperature
 Calculation method:
 based on basic temperature (this temperature is that
yearly average outdoor temperature when the internal
temperature will not go bellow ~20°C due to
internal/external heat sources)
 it is around 12°C at traditionally insulated block of flat
(panel buildings)
Compensated energy usage:
12 − tcorrected
Qcompensated = Q yearly •
12 − t yearly _ avrage
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5. Evaluation of figures 12 − tcorrected
Data collection in a table Qcompensated = Q yearly •
12 − t yearlya var age
Energy
Corrected Saving in % Saving in % due to Extra saving in Average
usage
Year energy usage compared to automatic balancing % due to ABV in outdoor Action
(heating)
to 2,4°C 1995 valve copm. to 1999 risers (2002) temp. [°C]
[GJ]
1995 2084 2,4
1996 2006 1945 6,7% 2,1 TRV, HCA installation
1997 1741 1878 9,9% 3,1
1998 1760 1837 11,9% 2,8
1999 1537 1757 15,7% 3,6
2000 1505 2247 -7,8% 5,57 ∆p contr. in substation
2001 1167 1347 35,4% 23,3% 3,68
2002 1161 1348 35,3% 23,3% 3,73 ∆p contr. in risers
2003 1275 1259 39,6% 28,3% 6,6% 2,28
2004 1068 1240 40,5% 29,4% 8,0% 3,73
2005 978 1126 46,0% 35,9% 16,5% 3,66 Substation separation
2006 960 945 54,6% 46,2% 2,25
2007 676 980 53,0% 44,2% 5,38
2008 853 1248 40,1% 28,9% 5,44
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6. Evaluation of figures 2084 - 1945
Data collection in a table En.saving = = 6,7%
2084
1757 - 1347
Energy
Corrected Saving in % Saving in % due to
En.saving =
Extra saving in Average
= 23,3%
Year
usage
energy usage compared to automatic balancing % due to ABV in outdoor 1757
Action
(heating)
to 2,4°C 1995 valve copm. to 1999 risers (2002) temp. [°C]
[GJ]
1995 2084 2,4
1996 2006 1945 6,7% 2,1 TRV, HCA installation
1348 - 1259
1997 1741 1878 9,9% En.saving =
3,1 = 6,6%
1998 1760 1837 11,9% 2,8 1348
1999 1537 1757 15,7% 3,6
2000 1505 2247 -7,8% 5,57 ∆p contr. in substation
2001 1167 1347 35,4% 23,3% 3,68
2002 1161 1348 35,3% 23,3% 3,73 ∆p contr. in risers
2003 1275 1259 39,6% 28,3% 6,6% 2,28
2004 1068 1240 40,5% 29,4% 8,0% 3,73
2005 978 1126 46,0% 35,9% 16,5% 3,66 Substation separation
2006 960 945 54,6% 46,2% 2,25
2007 676 980 53,0% 44,2% 5,38
2008 853 1248 40,1% 28,9% 5,44
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7. Evaluation of figures
Investment cost calculation
 Based on actual price list with standard discount
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8. Evaluation of figures
Pay back time calculation
Based on energy saving and
energy price
Investment type only TRV ABV in SS ASV-P/M Sum
Investment cost [€] 4816 1085 2410 7226
Av. yearly energy saving [GJ] 365,7 476,5 97,6 795,5
Energy price (DH) [€/GJ] 6,49 6,49 6,49 6,49
Pay back time [year] 2,0 0,4 3,8 1,4
*Without DH investment the system become ∆p controlled and the energy saving is fixed.
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9. Case study 1
Two pipe heating system
637 pcs
30 pcs
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28 October 2011 9

10. Case study 2
One pipe heating system
291 pcs
Hydronic Balancing & Control
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28 October 2011
6 February, 2013 10 l

11. Case study 3
One pipe heating system
128 pcs
Hydronic Balancing & Control
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28 October 2011
6 February, 2013 11 l

12. Case study 4
Domestic hot water
40 pcs
Hydronic Balancing & Control
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28 October 2011
6 February, 2013 12 l

13. Case study 5
Cooling system
50 pcs
Hydronic Balancing & Control
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28 October 2011
6 February, 2013 13 l

14. Case study 6
Global modernization
130 pcs
26 pcs
5 pcs
estimated
Hydronic Balancing & Control
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28 October 2011
6 February, 2013 14 l

15. Conclusion
Very effitient investment
If we use suitable solutions energy (money)
savings are significant
We can proof it base on cases studies!
In that cases studies we :
- collected precise data less than 4 year
- made precise calculation Payback time
Results you already know.
Hydronic Balancing & Control
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28 October 2011
6 February, 2013 15 l