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Annex 3. Household fuelwood consumption estimates

Energy requirements for house heating only

 

Construction year

Requirements by type1 kWh/m2

# of dwellings

Group average  kWh/m2

Group average kWh/m2

Total average  kWh/m2

single family houses

before 1980

185

13203

 

 

175.8 

 

 

 

 

169.3

 

 

 

 

 

 

 

 

143.4

 

 

144

1467

 

 

163

6449

 

 

111

0

 

 

210

1317

 

 

151

1518

 

       

 

after 1980

111

375

 

 

 

111

1820

 

 

 

90

337

 

apartments in blocks

before 1980

125

11720

 

 

 

109.7

 

 

98

1302

 

 

 

90

4565

 

 

 

84

2533

 

 

 

75

281

 

1 Depending on levels of insulation and maintenance.
Ref: Estimation of potential emission reduction in Slovenia. Final report. Ministry of Environment. 2002

Estimated additional requirements for cooking and water heating

 31% of house heating

Ref: Ministry of Energy. Study for energy plan and 2030 projection.

Fraction of occupied dwellings primarily using wood

0.814

Fraction of 'large dwellings’ area (> 80 m2) among primary wood users

0.59

Ref: [13] Census 2002 (file:Gozd_institut_t4_OB.xls )

 

Non-heated fraction of large dwellings

0.3

Reporting Consultant’s estimate

 

Dwellings using wood (primarily) – Census 2002

Total m2

17,335,126

Estimated occupied and heated

 

 # 0f dwellings

234,898 

Occupied dwellings

191,312

people in dw

594,934

Main conversion factors

         

1 kWh =

3600000

joules

=

3.6

MJ

   

1 MJ =

0.277778

kWh

         

1 CUM wood =

2900

kWh

=

10440

MJ

0.00 assumed efficiency loss

1 CUM wood =

0.725

tons

(average for fagus 20%humidity in Germany- average FAO)

1 CUM wood =

1.54

m3 stack wood

       

1 kg wood =

3.366

kWh

         

1 kg wood =

14.4

MJ

=

4.0000032

kWh

   

 

Energy requirements 1

0.85

efficiency

 

0.65

efficiency

 
     

2465

=kWh/CUM

 

1885

=kWh/CUM

 
 

kWh/m2

MJ/m2

CUM/m2

tons/m2

Stackwood/m2

CUM/m2

tons/m2

Stackwood/m2

house heating

160

576

0.0649

0.0471

0.0999

0.08488

0.0615

0.1306

total heat & cooking

208

748.8

0.0844

0.0612

0.1298

0.11034

0.0800

0.1698

Total Slovenia

kWh

TJ

CUM

tons

m3 stackwood

CUM

tons

m3 stackwood

house heating

1,858,926,454

6,692

754,128

546,743

1,160,197

986,167

714,971

1,517,180

total heat & cooking

2,416,604,390

8,700

980,366

710,765

1,508,256

1,282,017

929,462

1,972,334

 by dwelling (wf users)

kWh/dw

MJ/dw

CUM/dw

tons/dw

Stackwood/dw

CUM/dw

tons/dw

Stackwood/dw

house heating

9,717

34,980

3.9

2.86

6.1

5.2

3.74

7.9

total heat. & cooking

12,632

45,474

5.1

3.72

7.9

6.7

4.86

10.3

by inhabitant (wf users)

kWh/inh

MJ/inh

CUM/inh

tons/inh

Stackwood/inh

CUM/inh

tons/inh

Stackwood/inh

house heating

3,125

11,249

1.3

0.92

2.0

1.7

1.20

2.6

total heat. & cooking

4,062

14,623

1.6

1.19

2.5

2.2

1.56

3.3

1 The estimated energy requirement for heating only used, as main reference, the weighted average for single-family houses (see previous page).
The total energy requirement for heating and cooking was estimated by adding 30 % to the amount required for heating only.

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