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CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague [email protected]
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CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague [email protected].

Dec 24, 2015

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Page 1: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING

Nataliya AnisimovaCzech Technical University in Prague [email protected]

Page 2: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

EU-goals:

20% share of renewable energies in overall EU energy consumption by 2020

20% reduction of greenhouse-gas emissions by 2020

Page 3: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Structure of energy consumption in EU25

Page 4: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Aim of the research: to define what costs have to be involved in energy efficiency increase in EU housing to reach the required standard

1. Construction 2. Utilization 3. Maintenance

Page 5: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Final energy and primary energy demand

Page 6: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Final energy demand QE =

Heating energy demand QH x Heating energy loss factor eH + + Domestic water heat energy Qwx Water heat energy loss factor eW

Page 7: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Primary energy demand Qp =

(Heating energy demand Qh + Domestic water heat energy Qw) x Energy loss factor ep

Energy loss coefficient ep for different heating systems:

- 0,5 – 0,6 – wood-pellet heating, - 0,7 – 0,9 – heat pump, - 1,3 – 1,4 – combustion heating, - 1,5 and more – old heating system.

Page 9: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Heated area

Final energy

Primary energy

Useful energy

Transfer

Division Accumulation

Generation

Calculation of energy demand

Page 10: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Main characteristics of the reference building

Indicator Value Unit

Transmission heat loss H’T

through building covering 0.373 W/m2 K

Annual final energy demand QE

70.67 kWh/m2 ∙a

Annual primary energy demand QP

91.0 kWh/m2 ∙a

CO2 emissions per m2 of usable floor area

20.62 kg/ m2 ∙a

Page 11: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Variants of reduction of primary energy demand

Example 1 Example 2 Example 3

Additional solar domestic hot water system

Additional mechanical ventilation system with 80% heat recovery.

Installation of air-to-water heat pump for heating and hot water supply instead of gas combustion boiler (reference building)

Page 12: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Evaluation of primary energy demand reduction

Indicator Unit Example 1

Example 2

Example 3

Annual final energy demand QE per m2

kWh/m2

∙a 66.08 63.14 70.67

Annual primary energy demand QP per m2

kWh/m2

∙a72.60 72.50 68.80

Reduction in primary energy demand (as to reference building)

about 20 %

Costs of reduction in energy demand EUR 4 711 12 525 9 890

Average additional costs per 1 m2 EUR/m2 37.32 €

Page 13: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Financial support =

Average additional investment per 1 m2 x number of dwellings completed x average usable floor area of 1 dwelling

Page 14: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Level of support programs in EU25 countries, 1000 EUR

Page 15: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Conclusions:

Energy use in EU housing comprises the greatest part of total energy consumption and is above industry and transport figures.

Reduction in primary energy demand represents a reliable indicator of environmental efficiency of buildings.

Availability of sufficient financial support for the promotion of energy efficiency in housing will be essential to reach the stated target in EU overall energy efficiency.

Page 16: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Acknowledgement

This research has its origins as a part of a CTU in Prague, Faculty of Civil Engineering research project on “Management of sustainable development in the life cycle of buildings, building enterprises and territories”, financed by the Ministry of Education, Youth and Sports of the Czech Republic.

Page 17: CAPABILITY OF INCREASING ENERGY EFFICIENCY IN EU HOUSING Nataliya Anisimova Czech Technical University in Prague nataliya.anisimova@fsv.cvut.cz.

Thank you for your attention!