erasmus ip 2013 sustainable refurbishment, retrofit, energy management in housing ŽirmŪnŲ str....
TRANSCRIPT
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ERASMUS IP 2013
SUSTAINABLE REFURBISHMENT, RETROFIT,
ENERGY MANAGEMENT IN HOUSING
ŽIRMŪNŲ STR. 116, VILNIUS
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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, buff alo and other]Cubs Per Litter: (Usually 2-3 cubs) Cubs are born blind and weigh 2-3 pounds.Lifespan: Tigers l ive 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]
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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 After
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ENERGY EFFICIENCY
U-value
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ENERGY EFFICIENCY
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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
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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
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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- Coeffi cient 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)
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INSTALLATION EXTERNALLY
• Number of geothermal probe : 10• Depth drilling on geothermal probe : 50 m• Spacing between geothermal probes : 10 m
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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
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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 effi cient 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
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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
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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
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MAINTENANCE
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GREEN FACADE
LIVING WALL SYSTEM
GREEN FACADES
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LIVING GREEN WALL
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DECISION
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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
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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 € 11.138,09
Costs saving € 10.828,70 € 12.220,96 € 13.613,22
Payback method 8,00 y 7,08 y 6,36 y
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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”
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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
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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.
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THANK YOU FOR WATCHING!
Questions and com ments
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