ERASMUS IP 2013

SUSTAINABLE REFURBISHMENT, RETROFIT,

ENERGY MANAGEMENT IN HOUSING

ŽIRMŪNŲ STR. 116, VILNIUS

THE BALI TIGER GROUP

SARAH BOISSIN

Denmark

GRETA DEMIKYTĖ

LithuaniaGABRIELE BRANCHET

TI

Italy

AMOLRAJ SINGH

Germany

MATHEA CAPOROS

SI

France

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Range: Indonesian Island of Bali Average Weight:  Female: 65-80 kg (143 - 176 pounds)  Male: 90-100kg (198 - 221 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 10-15 YearsOther 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 1925. The Bali tiger were extinct around the end of 1937 ]

THE BALI TIGER GROUP [PANTHERA TIGRIS BALICA]

MAIN TASKS

Ground source heating & heat

pumps

Building services

CalculationsEnergy Efficiency

Green roofs and facades

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ENERGY EFFICIENCY

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Cold bridges Before Afte

r

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ENERGY EFFICIENCYU-value

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ENERGY EFFICIENCY

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

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 - very efficient for cold climates - expensive

GROUND SOURCE HEATING & HEAT PUMPS

HEAT PUMP GROUND TO WATER

Horizontal sensor

Vertical sensor

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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)

INSTALLATION EXTERNALLY• Number of geothermal probe : 10• Depth drilling on geothermal probe : 50 m• Spacing between geothermal probes : 10 m

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

BUILDING SERVICES

Passive Ventilation System

Air-Tightness Ventilation system Water storage tank from

rain water

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Heat Exchanger(TitonHRV1Q)

Comfort ventilation up to 300m3/h

Minimum energy consumption

Reducing carbon footprint Moist and hard air

extracted DirectlyLess Noise (21dB)Higher efficient heat

exchanger up to 95%Easy to maintainProperty running cost is low Increasing property value

PASSIVE VENTILATION SYSTEM

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Air-tight buildings waste less energy and cause co2

Vital to achieving passive build

Air- Tightness is 0.5 air changes per hour @ 50pa

Reduce maintains cost20% saving of electricity

billVARIO

Membrane(INTERAZUB)Stronger than polythene UV protected Reducing moisture

INTERNAL AIR-TIGHTNESS

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Single Sided Ventilation Required Air flow-67cbm/hHelpful to improve indoor Air

quality Zero energy consumptionLow maintains Lower initial costNo noise like mechanical

ventilation Less hygienic problem with duct

NATURAL VENTILATION

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Avg. precipitation-25.74inch Collection of water 781614

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

RAIN WATER STORAGE TANK

GREEN ROOF

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ENVIROMENTAL

& FINANCI

AL BENEFIT

S

BENEFITS

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DISATVENTAGES

DISATVANTAGE

S

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EXTENSIVE VS INTENSIVE

MAINTENANCE

VEGETATIONSUBSTRATE

LOADCOST

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MINIMAL REGULARY

UNDEMANDING

DEMANDING

50 – 150 kg/m2

>150 kg/m2

SMALL BIG

<10 cm

>10 cm

EXTENSIVE ROOF STRUCTURE

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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

MAINTENANCE

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GREEN FACADE

LIVING WALL SYSTEM

GREEN FACADES

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LIVING GREEN WALL

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DECISION

CALCULATION OF INVESTMENT AND RETURNS IN PASSIVE HOUSE AND

RETROFIT PROJECTS

Analysis of investment required:

TOTAL INVESTIMENT€

216.807,46

FINANCING OF GOVERNMENT€

32.521,12

OWN CAPITAL€

18.428,63

BANK'S LOAN€

165.857,70

FINANCING OF JESSICA€

14.854,84

REAL INVESTMENT AT TIME 0€

84.177,42

“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.”

Time: 20 yearsPresent value is € 99.032,26

POSSIBLE SCENARIES

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) 160 kwh / (m² a) 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 € 24.751,30 € 24.751,30 € 24.751,30Future costs € 13.922,61 € 12.530,35 € 11.138,09Costs saving € 10.828,70 € 12.220,96 € 13.613,22

Payback method 8,00 y 7,08 y 6,36 y

VALUE OF THE PROJECT

First scenary- Pessimistic -

Second scenary- Average -

Thirth scenary- Optimistic -

PAYBACK METHOD 8 years 7 years 6 yearsNET PRESENT VALUE € 4.915,94 € 16.680,28 € 28.444,62ROI 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”

BREACK EVEN POINT

1 2 3 4 5 6 7 8 9 1040000

60000

80000

100000

120000

140000

160000

180000

Energy saving Break even point

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.

THANK YOU FOR WATCHING!Questions and com ments

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