Transcript Document

SUSTAINABLE REFURBISHMENT,
RETROFIT, ENERGY
MANAGEMENT IN HOUSING
ŽIRMŪNŲ STR. 116, VILNIUS
ERASMUS
IP 2013
THE
BALI TIGER GROUP
SARAH
BOISSIN
Denmark
GRETA
DEMIKYTĖ
GABRIELE
BRANCHETTI
Italy
Lithuania
MATHEA
CAPOROSSI
AMOLRAJ
SINGH
Germany
France
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THE
BALI TIGER GROUP
[PANTHERA TIGRIS BALICA]
Range: Indonesian Island of Bali
Ave rage W e ig ht:
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.
Die t : 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.
Life span: Tigers live for 10 - 15 Years
Othe r I nfo rmatio n : Smalle st of all 8 tiger subspecie s .
Co nse rvatio n 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 ]
3
MAIN
TASKS
Green roofs and
facades
Ground source heating
& heat pumps
Building services
Energy
Efficiency
Calculations
4
ENERGY EFFICIENCY
Cold bridges
Before
After
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ENERGY EFFICIENCY
U-value
6
ENERGY EFFICIENCY
7
GROUND SOURCE HEATING &
HEAT PUMPS
Advantages
Air to air
Air to eau
Disadvantages
- ensure the heating of an
apartment
- little expensive
- easy to install
- constitutes a partial
heating
- little efficient for cold
climates
- characterized by a limited
..cost
- produce hot water
- COP >3.5
- advised for the small
apartments
- little efficient for cold
climates
- create noises
GROUND SOURCE HEATING &
HEAT PUMPS
Advantages
Ground to water
Water to water
- very efficient for cold
climates
- simple system
- successfull
- very efficient for cold
climates
Disadvantages
- big garden for horizontal
sensors
- extra cost for vertical
sensors
- expensive
HEAT PUMP GROUND TO WATER
Horizontal sensor
Vertical sensor
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)
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INSTALLATION EXTERNALLY
•
•
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Number of geothermal probe : 10
Depth drilling on geothermal probe : 50 m
Spacing between geothermal probes : 10 m
INSTALLATION INTERNALLY
•
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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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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
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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 hour @ 50pa
 Reduce maintains cost
 20% saving of electricity bill
 VARIO
Membrane(INTERAZUB)
 Stronger than polythene
 UV protected
 Reducing moisture
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NATURAL VENTILATION







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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
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RAIN WATER STORAGE TANK
 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
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GREEN ROOF
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BENEFITS
REDUCED
HEATING
REDUCED
ENERGY
USAGE
REAL
ESTATE
VALUE
REDUCED
COOLING
ENVIROMENTAL &
FINANCIAL BENEFITS
ROOF LIFE
SPAN
NATURAL
HABITAT
CREATION
FILTER AIR AND
RAINWATER
AGRICULTURAL
SPACE
SOUND
INSULATION
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DISATVENTAGES
COST
STATIC
LOADING
STRUCTURAL
STANDARTS
DISATVANTAGES
MAINTENEANCE
ADDITIONAL
MASS
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EXTENSIVE
VS
INTENSIVE
MINIMAL
UNDEMANDING
<10 cm
50 – 150 kg/m 2
SMALL
REGULARY
MAINTENANCE
VEGETATION
SUBSTRATE
LOAD
COST
DEMANDING
>10 cm
>150 kg/m 2
BIG
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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
Rockwool 2x150 mm
3.
Rockwool Slab 100 mm
2.
Vapour barrier VEDAGARD ® SK-PLUS
1.
Roof deck
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MAINTENANCE
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GREEN FACADE
GREEN FACADES
LIVING WALL SYSTEM
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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
FINANCING OF GOVERNMENT
OWN CAPITAL
BANK'S LOAN
FINANCING OF JESSICA
REAL INVESTMENT AT TIME 0
Time: 20 years
Present value is € 99.032,26
€ 216.807,46
€ 32.521,12
€ 18.428,63
€ 165.857,70
€ 14.854,84
€ 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.”
POSSIBLE SCENARIES
0%
Q entire specific energy demand
(for year)
Current consumption
(for average multifamily buildings)
Future consumption
Energy saving %
Current costs
Future costs
Costs saving
Payback method
First scenary
- pessimistic 160 kwh / (m² a)
90 kwh / (m² a)
31,25%
€ 24.751,30
€ 13.922,61
€ 10.828,70
8,00 y
-10,00%
Second scenary
- average -
-20,00%
Thirth scenary
- optimistic -
160 kwh / (m² a)
81 kwh / (m² a)
38,13%
€ 24.751,30
€ 12.530,35
€ 12.220,96
160 kwh / (m² a)
72 kwh / (m² a)
45,00%
€ 24.751,30
€ 11.138,09
€ 13.613,22
7,08 y
6,36 y
VALUE OF THE PROJECT
PAYBACK METHOD
NET PRESENT VALUE
ROI
ROE
First scenary
- Pessimistic 8 years
€ 4.915,94
5,68%
4,68%
Second scenary
- Average 7 years
€ 16.680,28
19,26%
15,88%
Thirth scenary
- Optimistic 6 years
€ 28.444,62
32,85%
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
180000
160000
140000
120000
100000
80000
60000
40000
1
2
3
4
Energy saving
5
6
7
Break even point
8
9
10
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
33