EIE EffCoBuild

WP3 Energy saving potentials in building sector and virtual “power saving plant”

Slovenia

Survey on energy consumption in community Jesenice

BCEI ZRMK: Marjana Šijanec Zavrl, Marta Skubic, Matjaž Malovrh, M. Praznik, M. Tomsic

Jesenice, JEKO-IN: Branko Noč, Matjaž Peskar

Meeting in Berlin, September 26-27, 2006

EffCoBuild

Survey on energy consumption in Jesenice is based on

Statistical data for municipality (residential sector, construction sector)

Energy concept of municipality (1999) incl. ongoing actualization (2006)

Pole in buildings with extremly high energy consumption

EffCoBuild

Distribution of energy supply networks

Other 2%Other 2%

combined, oil, combined, oil, biomass 48%biomass 48%

Gas 7%Gas 7%

District heating 43%District heating 43%

EffCoBuild

Delivered energy by energy sourceper number of dwellings

Energy supply for households

43,2%

5,6%0,9%

26,2%

22,4%

1,7%

distric heating natural gasLPG (liquid-petroleum gas) oilsolid fuel other

In 2005:

Supplied heat to D.H. system

64.579 MWh

Delived heat to D.H. users

53.654 MWh

3615 dwellings

900

4435 dwellings

EffCoBuild

Energy supply for heating

8590 dwellings in whole municipality Jesenice

3500 dwelllings connected to D.H.

Reliable energy data!

1400 dwellings > 150 kWh/m2year

2000 dwellings < 150 kWh/m2year

EffCoBuild

Big energy users above 150 kWh/m2yearDelivered energy (kWh/m2year) – heated area of building (m2) – energy costs SIT/m2month)

100

125

150

175

200

150 175 200 225 250 275 300

Letna raba energije (kWh/m2a)

mes

ečn

i str

ošk

i (S

IT/m

2mes

)

Ogrevana površina objekta (m2)

Useful / heated area of building (m2)

Delivered energy for heating per year (D.H. ) kWh/m2year

Mon

thly

cos

ts fo

r ene

rgy

for h

eatin

g (D

.H. )

SIT

/m2 m

onth

0.5 €

0.4 €

0.6 €

0.7 €

0.8 €

Source: D.H. company Jeko-in

EffCoBuild

Average delivered energy for heating 150 kWh/m2year – deviation in %

-30,0%

-20,0%

-10,0%

0,0%

10,0%

20,0%

30,0%

40,0%

Ulic

a V

ikto

rja

Ke

jža

rja 3

9U

lica V

ikto

rja

Ke

jža

rja 3

8U

lica F

ran

ca B

en

ed

ičič

a 0

02 a

Ulic

a F

ran

ca B

en

ed

ičič

a 0

02 b

Ulic

a G

ustla

Šta

vsa 0

01

Ulic

a V

ikto

rja

Ke

jža

rja 1

Ce

sta

re

volu

cije

12

Ce

sta

re

volu

cije

11

Ce

sta

re

volu

cije

14

Ce

sta

re

volu

cije

15

Ce

sta

re

volu

cije

16

Ce

sta

re

volu

cije

9C

esta

re

volu

cije

8

Ce

sta

marš

ala

Tita

76

aC

esta

marš

ala

Tita

76

Ce

sta

ma

ršala

Tita

87

C

esta

marš

ala

Tita

85

Ce

sta

marš

ala

Tita

89

Ce

sta

marš

ala

Tita

94

Ce

sta

marš

ala

Tita

96

Ce

sta

ma

ršala

Tita

10

0

Ce

sta

Cir

ila T

avča

rja 5

/1C

esta

Cir

ila T

avča

rja 5

/2

Ce

sta

marš

ala

Tita

10

Ce

sta

Vik

torja

Sve

tina

8a

Ce

sta

Vik

torja

Sve

tina

8b

Ce

sta

talc

ev 7

b

Ce

sta

Cir

ila T

avčarj

a 0

01

bC

esta

re

vo

lucije

00

2 b

Ce

sta

re

vo

lucije

00

1 a

Ce

sta

re

vo

lucije

00

1 b

Ce

sta

Cir

ila T

avčarj

a 0

01

aC

esta

re

vo

lucije

00

2 a

Ce

sta

ma

ršala

Tita

00

1 a

Ce

sta

marš

ala

Tita

00

3

Ce

sta

ma

ršala

Tita

00

4C

esta

ma

ršala

Tita

00

4 a

Ce

sta

Ton

eta

To

mšič

a 7

0

Ce

sta

Ton

eta

To

mšič

a 7

0 b

Ce

sta

Ton

eta

To

mšič

a 7

0 d

Ce

sta

Ton

eta

To

mšič

a 7

0 e

Ce

sta

Ton

eta

To

mšič

a 6

9

Ce

sta

Ton

eta

To

mšič

a 7

0 c

Ce

sta

Ton

eta

To

mšič

a 8

Ce

sta

To

neta

To

mšič

a 8

a

odst. od povp. rabe energije 98/99

odst. od povp. stroškov 98/99Energy consumption – deviation from averageEnergy costs – deviation from average

150

135

120

165

180

195

kWh/m2year

EffCoBuild

DHW in households per energy source

DHW preparation in households per energy source

18%

23%

6%1%16%

36%

solid fuel distric heating

natural gas LPG

oil other (heat pump, collector, electricity)

Energy consumption for DHW (domestic hot water)

19,5%

31,5%

6,7%1,1%

19,2%

22,0%

solid fueldistric heatingnatural gasLPGoilother (heat pump, collector, electricity)

No. of households MWh/asolid fuel 1251 2666distric heating 1599 4307natural gas 409 909LPG 64 153oil 1160 2617other (heat pump, collector, electricity) 2578 3000

13652

Energy consumption for DHW (domestic hot water)

20% solid fuel32% distric heating

7% natural gas1% LPG

19% oil22% other (heat pump, collector, electricity)

EffCoBuild

DHW by

district heating

Energy consumption for DHW

0500

10001500200025003000350040004500

solid

fue

l

natu

ral

gas oi

lMethod of DHW preparing

En

erg

y co

nsu

mp

tio

n f

or

DH

W [

MW

h/y

ear]

0300600900120015001800210024002700

No

. o

f h

ou

seh

old

s

MWh/a No. of households

Average energy consumption for DHW per household

0,0

0,5

1,0

1,5

2,0

2,5

3,0

solid fuel distric heating natural gas LPG oil other (heatpump, collector,

electricity)

Aw

erag

e [M

Wh

/a h

ou

seh

old

]

EffCoBuild

976

1128

1437

1857

1682

1178

235

97

0

200

400

600

800

1000

1200

1400

1600

1800

2000

Num

ber

of d

wel

lings

up to 1918 1919-1945 1946-1960 1961-1970 1971-1980 1981-1990 1991-2000 2001-2003

Year of construction

Dwelling stock, dwellings by year of construction in Jesenice

Existing dwellings (8590 dwellings) by year of construction

(Source: census 2002)regulationregulation

EffCoBuild

976

1128

1437

1857

1682

1178

235

97

0

200

400

600

800

1000

1200

1400

1600

1800

2000

Nu

mb

er o

f dw

elli

ngs

up to 1918 1919-1945 1946-1960 1961-1970 1971-1980 1981-1990 1991-2000 2001-2003

Year of construction

Dwelling stock, dwellings by year of construction in Jesenice

66

68

70

72

74

76

78

80

82

84

86

88

90 I ndust r ial

Public/ Commer cial

Resident ial

0

500

1000

1500

2000

2500

Industrial Public/Commercial Residential

Census 2002:Jesenice:2557 residential buildings8517 dwellings with 540.298 m2 floor area

Jesenice

Whole Slovenia

EffCoBuild

8590

1487

3818

2288

617380

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

total 1 room2) 2 rooms 3 rooms 4 rooms 5 rooms or more

Dwelling stock, dwellings by number of rooms, Jesenice

(Source: census 2002)

Existing dwellings in number by number of rooms

EffCoBuild

546,5

53,3

215,4

166,7

61 50

0

100

200

300

400

500

600

Us

efu

l fl

oo

r a

rea

of

dw

ell

ing

s (

10

00

m2

)

total 1 room 2 rooms 3 rooms 4 rooms 5 rooms or more

Dwelling stock, dwellings by useful floor area, Jesenice

Jesenice:

total residential building stock area - 546.500 m2 , i.e. ~60%

non-residential – 364.300 m2; ~40% (estim.) -

(Source: census 2002)

Existing dwellings in total useful floor area by number of rooms

EffCoBuild

Pole 1400 dwellings – 44 buildings

EffCoBuild

Municipality Jesenice - pole on energy data Residental sector (N = 1400)

0

10

20

30

40

50

60

70

Ulic

a V

ikto

rja K

ejž

arja

38

Ces

ta r

evol

ucije

11

Ces

ta r

evol

ucije

12

Ces

ta r

evol

ucije

14

Ces

ta r

evol

ucije

15

Ces

ta r

evol

ucije

16

Ces

ta r

evol

ucije

8

Ces

ta r

evol

ucije

9

Ces

ta m

arša

la T

ita 7

6

Ces

ta m

arša

la T

ita 7

6a

Ces

ta m

arša

la T

ita 8

5

Ces

ta m

arša

la T

ita 8

7

Ces

ta m

arša

la T

ita 8

9

Ces

ta m

arša

la T

ita 9

4

Ces

ta m

arša

la T

ita 9

6

Ces

ta m

arša

la T

ita 1

00

Ces

ta C

irila

Tav

čarja

5/1

in 5

/2

Ces

ta m

arša

la T

ita 1

0

Ulic

a V

ikto

rja K

ejž

arja

39

Ulic

a F

ranc

a B

ene

diči

ča 0

02a

Ulic

a F

ranc

a B

ene

diči

ča 0

02b

Ulic

a G

ustla

Str

avs

a 00

1

Ulic

a V

ikto

rja K

ejž

arja

1

Ces

ta V

ikto

rja S

vetin

a 8a

Ces

ta V

ikto

rja S

vetin

a 8b

Ces

ta t

alce

v 7b

Ces

ta r

evol

ucije

002

b

Ces

ta r

evol

ucije

001

a

Ces

ta C

irila

Tav

čarja

001

b

Ces

ta r

evol

ucije

001

b

Ces

ta C

irila

Tav

čarja

001

a

Ces

ta r

evol

ucije

002

a

Ces

ta m

arša

la T

ita 0

01a

Ces

ta m

arša

la T

ita 0

03

Ces

ta m

arša

la T

ita 0

04a

Ces

ta T

onet

a T

om

šiča

70b

Ces

ta T

onet

a T

om

šiča

70d

Ces

ta T

onet

a T

om

šiča

70e

Ces

ta T

onet

a T

om

šiča

69

Ces

ta T

onet

a T

om

šiča

70c

Ces

ta T

onet

a T

om

šiča

70

Ces

ta T

onet

a T

om

šiča

8a

Nu

mb

er

of

dw

ellin

gs

Nuber of questionnaires sent out

Response

Pole – the biggest energy users

(1400 dwellings, 44 residential buildings)

17%

EffCoBuild

Age of residents in apartment buildings in Jesenice

0

20

40

60

80

100

120

140

160

180

< 18 y 18 – 35 y 35 – 50 y 50 – 65 y > 65 y

Age of residents

Nu

mb

er

of

res

ide

nts

Source: pole 44 buildings

EffCoBuild

Ownership of dwellings in apartment building

12,3%

3,7%6,7%

12,3%

64,9%

0%

10%

20%

30%

40%

50%

60%

70%

resident municipality other individualowner

other legal entity someone else

Ow

ne

rsh

ip [

%]

Source: pole 44 buildings

EffCoBuild

Source: pole 44 buildings

EffCoBuild

Price for energy consumption per month - Jesenice (apartment buildings)

7,2%

23,7%

38,1%

29,2%

1,7%0%

5%

10%

15%

20%

25%

30%

35%

40%

< 15 €/month 25 €/month 50 €/month 75 €/month > 75 €/month

Source: pole 44 buildings Net averge salary 650 EUR

EffCoBuild

Evaluation of energy costs

49,6%

37,7%

12,7%

0,0% 0,0%0%

10%

20%

30%

40%

50%

60%

very high high acceptable low very low

ESTIMATION OF COSTS FOR ENERGY USE IN A HOSEHOLD

4,0%

25,7%

61,1%

7,7%

1,5%

0,0%

10,0%

20,0%

30,0%

40,0%

50,0%

60,0%

70,0%

very high costs high costs acceptable costs relatively low low costs

Whole Slovenia

Jesenice

Source: pole 44 buildings

EffCoBuild

Problems with thermal comfort that appear in residents apartment

0%

10%

20%

30%

40%

50%

60%

mo

uld

in th

eco

rne

rs

we

t wa

lls

cold

wa

lls

dra

ug

ht (

ba

dw

ind

ow

tigh

ten

ing

too

low

tem

pe

rra

ture

sin

win

ter

time

too

hig

hte

mp

err

atu

res

in s

um

me

rtim

e ba

d a

ir

oth

er

present

expressive

EffCoBuild

Refurbishment target

Big energy users (1400 dwellings) in central Jesenice use more then 150 kWh/m².

Final target energy use for dwelling with floor area 55 m2, is between 100 and 110 kWh/m².

Short term target of municipality Jesenice is to reduce delivered energy for heating to 140 kWh/m².

Municipality Jesenice developed 150 subsidy programme (started in 2000, currently enlarged!)

EffCoBuild

Refurbishment target

Municipality Jesenice developed 150 subsidy programme (started in 2000, currently enlarged!)

• thermal insulation of attics (unused attic) or thermal insulation of roofs (used attic),• thermal insulation and renewal of façades, • thermal insulation of basement ceilings or flooring,• replacement of buildings’ joinery – windows and doors,• switch over to district heating (connection to hot-water network and gas grid),• installation of heat pumps for hot water generation,• installation of solar systems for hot water generation,• installation of special wood-fuelled combustion plants for central heating running on

logs (biomass).Poraba energije

kwh/m2 letno

% subvencije

150 – 180 10 - 15

180 – 210 15 – 20

210 – 230 20 - 25

› 230 30

EffCoBuild

Ulica Franca Benedečiča 2a

Osnovni podatki ogr.površina: 1015 m2 št. stanovanj: 24 št. stanovalcev: 74 upravnik: Meting leto gradnje: 1973

Ovoj zgradbe Stene (125 m2 S, 118 m2 J, 177 m2 Z, 179 m2 V) teranova, brez toplotne izolacije, nekaj poškodb zaradi zatekanja vode (notranji viri), Streha (291 m2) nepohodno podstrešje, salonitna kritina, toplotna izolacija: 2 cm tervol, 5 cm kombi plošče Tla (291 m2) objekt je podkleten, toplotna izolacija: 2 cm tervol Okna (34 m2 S, 22 m2 J, 26 m2 Z, 28 m2 V + balkonska vrata 20 m2 S, 39 m2 J) lesena, vezana, 2 zastekljena balkona Vrata (5 m2)

Ogrevalni sistem Objekt napaja toplotna postaja sosednjega objekta (Ulica Viktorja Kejžarja 39) ter zagotavlja samo toploto za centralno ogrevanje stanovanj. Temperatura (sekundarnega) ogrevanega medija v dovodu je regulirana že v toplotni postaji. Centralno ogrevanje objekta je izvedeno z dvocevnim radiatorskim sistemom ogrevanja. V prostorih stanovanj so vgrajeni jekleni radiatorji Trika z ročnim ventilom v dovodu ter brez zapornega holandca v povratku. Temperatura v ogledanem stanovanju je znašala 22°C. Temperatura neogrevanega hodnika v času ogleda je znašala 19°C.

razvodi ogrevanja (CFB2A)

ogrevalo ob vhodu v objekt (CFB2A)

Projektna dokumentacija SGP Sava, Jesenice, 227/76, I.76, SGP Gorica, 392/71, Centralno ogrevanje

Raba toplote in strošek ogrevanja objekta števec: 1.104 letna raba toplote za ogrevanje 98/99: 225,4 kWh/m2leto (3,4% glede na povp.) mesečni strošek ogrevanja 98/99: 155,37 SIT/m2mes (4,3% glede na povp.)

Računska potreba objekta po toploti transmisijske toplotne izgube: 142,1 MWh/leto ventilacijske toplotne izgube: 83,4 MWh/leto specifične toplotne izgube: 194 kWh/m2leto

Predlagani ukrepi z oceno investicijskih stroškov in vračilne dobe

Gradbeni posegi

investicija[000 SIT/obj]

prihranekenergije

[MWh/leto]

letniprihranek

[000 SIT/leto]vračilna

doba [let]

Tesnjenje oken264 25 191 1,5

Menjava oken6.600 46 353 19

toplotna izolacija fasade5.348 60 462 12

toplotna izolacija podstrešja437 9 70 6

Posegi na strojnih instalacijah

investicija [000 SIT/obj]

prihranek energije

[MWh/leto]

zmanjšanje stroškov

[000 SIT/leto] vračilna

doba [let]

1. pregled instalacije ogrevanja nedol. - - - nedol. - - -

5. kombinacija ukrepov 2,3,4

1.814 61 466 3,9 1.814 50 385 4,7

6. vgradnja delilnikov stroškov ogr. 184 - -54 - 184 - -54 -

(prve vrednosti se nanašajo na izvedbo ukrepov brez predhodnih

gradbenih posegov, druge pa za primer izvajanja obojih)

Biggest energy users – (44 buildings connected to D.H.) Estimation of savings Calculation

Very detailed information for big energy users

For modest energy users other only in average %

EffCoBuild

Common refurbishment actions in 1945-1980 buildings

DH connection

EffCoBuildV

isu

alis

atio

n o

f sa

vin

g p

ote

nti

al -

idea

s

150 kWh/m2year

EffCoBuild

Rabe energije za ogrevanje > 150 kWh/mRabe energije za ogrevanje > 150 kWh/m22letoleto

Rabe energije za ogrevanje Rabe energije za ogrevanje

< 150 kWh/m< 150 kWh/m22letoleto

Subvencije: http://www.jesenice.siSubvencije: http://www.jesenice.si

Nasveti: http://ENSVET.siNasveti: http://ENSVET.si

Vis

ual

isat

ion

of

savi

ng

po

ten

tial

- id

eas

< 150 kWh/m2leto< 150 kWh/m2leto 250 kWh/m2leto250 kWh/m2leto

Thank you for your attention!Thank you for your attention!