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Sustainable Refurbishment, Retrofit, Energy Management in Housing Žirmūnų str. 116, Vilnius ERASMUS IP 2013.

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Presentation on theme: "Sustainable Refurbishment, Retrofit, Energy Management in Housing Žirmūnų str. 116, Vilnius ERASMUS IP 2013."— Presentation transcript:

1 Sustainable Refurbishment, Retrofit, Energy Management in Housing Žirmūnų str. 116, Vilnius
ERASMUS IP 2013

2 The bali tiger group SARAH BOISSIN Denmark GRETA DEMIKYTĖ Lithuania
MATHEA CAPOROSSI France GABRIELE BRANCHETTI Italy AMOLRAJ SINGH Germany

3 The bali tiger group [Panthera tigris balica]
Range: Indonesian Island of Bali Average Weight: Female: kg ( pounds) Male: kg ( pounds) Size: Tigers reach up to ten feet in length and weigh 400 to 575 pounds. Diet: All tigers are carnivorous [pigs, deer, antelope, buffalo and other] Cubs Per Litter: (Usually 2-3 cubs) Cubs are born blind and weigh 2-3 pounds. Lifespan: Tigers live for Years Other Information: Smallest of all 8 tiger subspecies. Conservation Status: Extinct since the late 1930's or early 1940's [The last Bali tiger to be shot was believed to be a female in The Bali tiger were extinct around the end of 1937]

4 main tasks Green roofs and facades Ground source heating & heat pumps
Building services Energy Efficiency Calculations

5 Energy Efficiency Cold bridges Before After

6 Energy Efficiency U-value

7 Energy Efficiency

8 Ground source heating & heat pumps
Advantages Disadvantages Air to air ensure the heating of an apartment - little expensive easy to install - constitutes a partial heating little efficient for cold climates Air to eau  characterized by a limited ..cost produce hot water COP >3.5 advised for the small apartments little efficient for cold climates create noises

9 Ground source heating & heat pumps
Advantages Disadvantages Ground to water very efficient for cold climates simple system successfull big garden for horizontal sensors extra cost for vertical sensors Water to water expensive

10 Heat pump ground to water
Horizontal sensor Vertical sensor

11 Vertical sensor Losse : 45 kW Power of heat pump : 32 kW
Choice of heat pump ground to water : - Vitocal 300-G, type BW/BWS : 6,2 à 35,2 kW Coefficient of performance COP : 4,7 Maximal temperature of departure : 65°C Dimensions (Height x Width x Depth) : 970 x 600 x 1065 mm Weight : 2 x 168 kg ( 35,2 kW)

12 Installation externally
Number of geothermal probe : 10 Depth drilling on geothermal probe : 50 m Spacing between geothermal probes : 10 m

13 Installation internally
Low temperature radiators FARAL of cast aluminium : warm fast cool slowly are rather little expensive Number of radiators : 88 Connecting between heat pump and radiators : pipes PER (Polyethylene) Number heat pump : 2

14 Building services Passive Ventilation System Air-Tightness
Water storage tank from rain water

15 Passive Ventilation System
Heat Exchanger(TitonHRV1Q) Comfort ventilation up to 300m3/h Minimum energy consumption Reducing carbon footprint Moist and hard air extracted Directly Less Noise (21dB) Higher efficient heat exchanger up to 95% Easy to maintain Property running cost is low Increasing property value

16 Internal air-tightness
Air-tight buildings waste less energy and cause co2 Vital to achieving passive build Air- Tightness is 0.5 air changes per 50pa Reduce maintains cost 20% saving of electricity bill VARIO Membrane(INTERAZUB) Stronger than polythene UV protected Reducing moisture

17 Natural Ventilation Single Sided Ventilation Required Air flow-67cbm/h
Helpful to improve indoor Air quality Zero energy consumption Low maintains Lower initial cost No noise like mechanical ventilation Less hygienic problem with duct

18 Rain Water Storage Tank
Avg. precipitation-25.74inch Collection of water gallon water/year Saving up to 50 % of water consumption Use for Toilets, washing, and land scalping NO Lime scale(less detergent required),kinder to plants Help to increase property value (eco-friendly) Storage capacity of tank 10,000 gallon Save water save life

19 Green roof

20 BENEFITS ENVIROMENTAL & FINANCIAL BENEFITS REDUCED HEATING
REDUCED COOLING NATURAL HABITAT CREATION FILTER AIR AND RAINWATER SOUND INSULATION AGRICULTURAL SPACE ROOF LIFE SPAN REAL ESTATE VALUE REDUCED ENERGY USAGE

21 DISATVENTAGEs DISATVANTAGES COST STRUCTURAL STANDARTS MAINTENEANCE
ADDITIONAL MASS STATIC LOADING

22 Extensive VS intensive
MINIMAL REGULARY MAINTENANCE VEGETATION SUBSTRATE LOAD COST DEMANDING UNDEMANDING >10 cm <10 cm 50 – 150 kg/m2 >150 kg/m2 SMALL BIG

23 Extensive roof structure
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. Rockwool 2x150 mm Rockwool Slab 100 mm 2. Vapour barrier VEDAGARD ® SK-PLUS 1. Roof deck

24 MAINTENANCE

25 GREEN FACADE GREEN FACADES LIVING WALL SYSTEM

26 LIVING GREEN WALL

27 DECISION

28 Time: 20 years Present value is € 99.032,26
Calculation of investment and returns in passive house and retrofit projects Time: 20 years Present value is € ,26 Analysis of investment required: TOTAL INVESTIMENT € ,46 FINANCING OF GOVERNMENT € ,12 OWN CAPITAL € ,63 BANK'S LOAN € ,70 FINANCING OF JESSICA € ,84 REAL INVESTMENT AT TIME 0 € ,42 “We have hypothesized that: - the Government founds covers 15% of the total costs; - at travel’s start the client’s capital must covers 10% of residual investment; - JESSICA covers 15% of the loan investment.”

29 Possible SCEnaries Payback method 8,00 y 7,08 y 6,36 y
0% -10,00% -20,00% Q entire specific energy demand (for year) First scenary - pessimistic - Second scenary - average - Thirth scenary - optimistic - Current consumption (for average multifamily buildings) 160 kwh / (m² a) Future consumption 90 kwh / (m² a) 81 kwh / (m² a) 72 kwh / (m² a) Energy saving % 31,25% 38,13% 45,00% Current costs € ,30 Future costs € ,61 € ,35 € ,09 Costs saving € ,70 € ,96 € ,22 Payback method 8,00 y 7,08 y 6,36 y

30 Value of the project First scenary - Pessimistic - Second scenary - Average - Thirth scenary - Optimistic - PAYBACK METHOD 8 years 7 years 6 years NET PRESENT VALUE € 4.915,94 € ,28 € ,62 ROI 5,68% 19,26% 32,85% ROE 4,68% 15,88% 27,09% “For actualization of saving energy we have assumed that this doesn’t finish at the end of the tenth year, therefore, for the last money return, we have utilized temporary costant return”

31 Breack even point

32 Positive externalities of retrofit and passive house
benefits of sustainability; quality of life of the inhabitants; less poverty; lower costs for the government; increased tourism.

33 Questions and com ments
Thank you for watching! Questions and com ments


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