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Sustainable Refurbishment, Retrofit, Energy Management in Housing

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Presentation on theme: "Sustainable Refurbishment, Retrofit, Energy Management in Housing"— Presentation transcript:

1 Sustainable Refurbishment, Retrofit, Energy Management in Housing
Zirmunu str. 116, Vilnius Anna Mukhina Germany Artur Akulov Estonia Tiago Sousa Portugal Alina Garlukovič Lithuania ERASMUS IP 2013

2 About Hector's dolphin Physical Characteristics Diet Social Structure
Breeding Facts : Hector’s dolphin was named after James Hector who is believed to be the first person to have examined this species. These dolphins are only found living in the waters of New Zealand throughout the year. Due to pollution, boating and other activities over the past 30 – 40 years number of these dolphins have reduced from around 26,000 to less than 7,500

3 The main tasks of the project
Energy efficiency; Building services; Green roofs and facades; Calculation of investment and returns in passive house and retrofit projects.

4 Energy efficiency Analysing current situation Thermal bridges
Choosing materials and windows Energy demand on heating Costs

5 Energy efficiency. Current situation
U-values (old construction): External envelope Area (m²) U-value (W/m²K) Roof construction 450 0,65 Ground floor construction External wall 860 2,80 Windows, 2 layers of glass, replaced 238,1 1,50 Windows, 2 layers of glass, old 119,1 3,0 External door 6,56 2,50 Stairwell window 53,96

6 Energy efficiency. Thermal bridges
Thermal bridges (current) Lenght (m) Value (W/mK) H (W/K) External wall - ext. wall, outside corner 175,94 0,5 87,97 Ext. wall - ext. wall, inside corner 121,4 -0,2 -24,29 Floor - ext. wall 102 0,4 40,68 Roof - ext. wall Windows and doors perimeter 837 334,80 Ext. wall - intermediate ceiling 407 0,3 122,04 Balcony - ext. wall 118,8 0,6 71,28 673,16 Energy demand on heating: 160 kWh/m²y

7 Energy efficiency. Thermal bridges solutions
Bring windows out into the insulation layer Insulate balcony slab Quality of construction works

8 Energy efficiency. Insulation
Foamglas® insulation Low environmental pollution 66% recycled glass Only renewable energy is used

9 Energy efficiency. Windows and doors
Triple glazed windows U=0,78 Double glazed in basement and stairwell U= 1,0 Stairwell facade New entrance doors Balconies are glazed with tempered glass

10 Energy efficiency. Energy Management effect
 Thermal bridges (after) Lenght (m) Value (W/mK) H (W/K) External wall - ext. wall, outside corner 175,94 0,1 17,59 Ext. wall - ext. wall, inside corner 121,4 -0,1 -12,14 Floor - ext. wall 102 0,02 2,03 Roof - ext. wall 10,17 Windows and doors perimeter 837 0,01 8,37 Ext. wall - intermediate ceiling 407 0,05 20,34 Balcony - ext. wall 118,8 11,88  Total 58,24 Construction U-value Roof 0,10 External walls 0,15 Basement ceiling Windows, U=0,78 0,78 Windows, U =1,0 1,00 Entrance doors, U =1,0 Energy demand on heating: 26 kWh/m²y

11 Energy efficiency. Costs
First option € Foamglas® insulation Alternative option € Rockwool insulation

12 Building services Heating system; Water recycling system;
Ventilation system.

13 Building services. Heating system
What is district heating? District heating is friendly for environment ? How does district Heating work? How do we improve the temperature control in our project? 1. Radiator 2. Valve

14 Building services. Water recycling system
How to utilize the rain water? Advantages and disadvantages

15 Building services. Ventilation system
Mechanical exhaust ventilation How it works? Some examples of design:

16 Green roofs and facades
Benefits: Stemming the flow of water off a roof; Noise reduction Blocks out UV light Lessens heat gain Additional layer of thermal insulation Green space in a city. Absorb the high levels of carbon dioxide

17 Green roofs and facades
Technology VEDAFLOR ® green roof Plus 9. Sedum, small vegetation 8. Light mineral substrate E (thickness 8-10 cm) 7. Drainage mat / vegetative plate (thickness 20mm) 6. Distinctive layers of polyethylene film (thickness 0.2 mm) 5. Bituminous coating VEDAFLOR ® WS-I - Root penetration resistance second waterproof layer 4. Bituminous coating VEDAFLOR ® WS-U - root penetration resistance first waterproof layer 3. Foamglas T4+ Slab 2x150 mm Foamglas T4+ Slab 100 mm 2. Vapour barrier VEDAGARD ® SK-PLUS 1. Roof deck

18 Green roofs and facades
Living wall Function Means for water reuse Plants reduce overall temperatures of the building Used for urban agriculture, urban gardening, or for its beauty as art Alleviate sick building syndrome

19 Green roofs and facades
Living wall Technology 16mm diam. pipework ANS living wall module Drainage channel FSC pressure treated softwood battens Waterproof membrane Indicative existing structure ANS fixing rails Pre-planted before installation Fitted to fixing rails

20 Green roofs and facades
First option Second option

21 Calculation of investment and returns in passive house and retrofit projects
Financial program Renovation costs calculation Cost of energy before and after renovation Loan and savings calculation Financial characteristics

22 Calculation of investment and returns in passive house and retrofit projects
Type of works Construction costs, € Ventilation 5 158 Water recycling 12 938 Heating system 18 698 Green roof+ facade Walls, roof, basement wall and floor, windows TOTAL Support program 30%

23 Heating needed (kWh/m²*y)
Calculation of investment and returns in passive house and retrofit projects Costs, € Heating needed (kWh/m²*y) 13,56 159,63 Before renovation 2,22 26,18 After renovation 11,34 133,45 Savings on heating

24 Calculation of investment and returns in passive house and retrofit projects

25 Financial characteristics
Calculation of investment and returns in passive house and retrofit projects Financial characteristics Payback period years NPV , 042 € ROI ,76 %

26 Conclusion Outcomes • Changes in tenant energy expenditure
• Changes in carbon emissions for the environment • Health impacts on tenants and associated costs saved to society • Tenant comfort levels • Community effects

27 Thank you for your attention


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