Transcript iti.vgtu.lt

ŽIRMŪNŲ G. 116
TEAM :
Norbert Varnyu
Andre Zeferino
Laury Rocca Serra
Kotryna Supejevaitė
Liudmila Rapin
Team introduction
Laury
Liudmila
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Greater Bamboo Lemur
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Greater Bamboo Lemur
Facts about the greater bamboo lemur:
 it was believed to have become extinct
by the early 20th century.
 only 60-160 lemurs are left in the wild.
 only lives in the jungles and forests of
Madagascar;
 a star in the animated movie
Madagascar.
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Content
Problem statement
 Energy efficiency
 Heating system
 Design & construction
 Penthouse proposal
 Calculation of the investment & return

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Why renovate?
PROBLEMS:
 Most in poor condition.
 Inefficient heating systems and
engineering equipment.
 No insulation.
 Bad quality windows, roofs.
 Unattractive design.
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1. Energy efficiency

Insulation of external walls
External Insulation
Insulation : 140 mm isover 32  λ = 0,032 W/m.K
U-Value = 0,21 W/m2.K
ϕ = 5,5 kW
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1. Energy efficiency

Green roof
Green roof substrate
Filtre Layer
Drainage layer
Extensive green roof
Insulation : 200 mm polyurethane
 λ = 0,025 W/m.K
Protection mat
Waterproof membrane
Insulation
Vapour control layer
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U-Value = 0,12 W/m2.K
ϕ = 1,98 kW
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1. Energy efficiency

Ground floor
Insulation of ground floor
Insulation
Slab
Insulation : 200 mm polyurethane
 λ = 0,025 W/m.K
U-Value = 0,123 W/m2.K
ϕ = 0,6 kW
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1. Energy efficiency

Sustainable and
alternative insulation
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Embodied energy
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1. Energy efficiency

Windows and balcony doors
thermal
conductivity
Price
Maintenance
Durability
recyclable
Wood
PVC
Aluminum
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1. Energy efficiency

Windows and balcony doors
PVC windows and balcony doors
Double glass 4/16/4 mm
 λglass = 1,2 W/m.K
 λair = 0,027 W/m.K
U-Value = 1,98 W/m2.K
ϕ = 18,2 kW
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1. Energy efficiency

Apartment access doors
PVC Apartment access doors
U-Value = 1,2 W/m2.K
ϕ = 0,77 kW
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1. Energy efficiency

Differences Actual/After
80
H
E
A
T
L
O
S
S
E
S
K
W
70
60
After renovation
Actual
50
40
30
20
10
0
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Roof construction
Ground floor
construction
Dividing walls,
stairwell
External wall
windows+balcony
doors
Apartment acces
doors
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1. Energy efficiency

Total heat losses
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Actual
After
137,5 kW
28,5 kW
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1. Energy efficiency

Consumption
Actual
After
275 kWh/m2/year
13 kWh/m2/year
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2. Heating system

Choice of heat pump
COP
Tax credit
Area required
AIR/AIR
GROUND/WATER
28,5 kW of heat losses  36kW for the heat pumps
1 heat pump for each part of building  2 heat pumps
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2. Heating system

Choice of sensors
Heat pump
Horizontal sensors
Vertical sensors
Depth : 60/120cm
Depth : 100m
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2. Heating system

For the project
 Vertical sensors : 570 m of sensors
 6 drilling of 95 m
 Horizontal sensors : 2880 ml of sensors
 3000-3500 m2 of
surface area
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2. Heating system

Choice of sensors
Efficiency
Price
Area required
Vertical sensors
Horizontal sensors
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2. Heating system

2 ways to install sensors
Severals strates of sensors
1 strate of sensors
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2. Heating system

Heat pump and system
for 1 block of the building
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3. Design & construction
Cladding alternatives
alternatives
stucco
brick
wood
Cost
product life
(years)
life cycle
thinking
practice
average
50+ (depending
on maintenance)
good
standard
high
100+
good
standard
average
25-75
(depending on
maintenance)
good
standard
low
50
better
May require some
training (cutting &
sealant joints)
aluminum
vinyl
average
low
20-50
25
good
typical
standard
standard
hardboard
low
10-25
typical
standard
fibercement
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3. Design & construction
Embodied energy for façade materials
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3. Design & construction
Fiber cement board – Simple & Sustainable
The nice thing about FCB is that its
+ usually made with recycled content,
+ has a long life span,
+ requires little maintenance,
+ economical,
+ unique design,
+ defense to moisture, rain, snow, or hail.
The down side is
- the embodied energy in its creation.
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3. Design & construction
Cost effective
"Cost Versus Value Report"
Remodeling magazine 2009:
„Siding replacement with fiber cement products –
number one for four years as the leader in returning
value for residentail remodeling and home resales.„
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3. Design & construction
Cladding system

The original facade would insulated and
overcladed
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3. Design &
construction
Cladding system
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3. Design &
construction
Cladding system
Fire Barrier
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3. Design &
construction
Cladding system
Frame
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3. Design & construction
Window in the facade
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3. Design & construction
Balcony
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3. Design & construction
Lets bring a facade to life
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3. Design & construction
Enclosing
1 Less corrosion
2 The risk of frost damage is eliminated
3 Reduced energy consumption
4 Lower maintenance costs
5 Noise reduction
6 Higher property value
7 Increased security
8 Better indoor climate
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3. Design & construction
Frameless sliding system
inexpensive and “lightweight” design
Construction techniques
 Glass with casters, slides in two-track enclosed frame.
 6mm thick, tempered glass.
 Windows can slide through entire length of the balcony.
 Seal brush inhibits wind vibrations.
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3. Design and Construction
 The design idea: Recycling or up-cycling
shipping containers
 Use simple and compact design;
possibility for standardization or even
prefabrication
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3. Design and Construction



Penthouses 56m2 each
4 penthouse all together
Possibility to enhance the basic
model and use renewable
resources
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x. Green penthouse
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5. Calculation of the investment
& return
Phases
Assumptions
 Cost calculation
 Financing options
 Returns calculation
 Performance indicators

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5. Calculation of the investment &
return
Assumptions
Growth rate of energy and electricity prices: 5 %/y;
 Interest rate: 3 %/y;
 Inflaction rate: 2,6 %/y;
 Loan duration: 20 years;
 Project duration: 10 years;
 Duration of construction and retrofit : 6 months;
 Energy consuption: before 275KWh/m²/y, after 13
KWh/m²/y

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5. Calculation of the investment
& return
Cost calculation
Construction costs of Penthouse
Description
Price € Quantity
Cost €
Refurbishment costs
Windows/Doors
€
43.913,04
Elevator (€/level)
Staircase
(lightweight) €/level
Facade
€
15.449,28
Building cost (€/m²)
Balcony
€
24.673,04
Insulation/Heating
€
58.453,51
Roof
€
71.478,26
Labor costs
€
85.586,85
Maintenance costs
€
2.400,00
Total cost
€
Description
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Cost
Total cost
Cost for an apartment
5300
10
€ 53.000,00
1300
10
€ 13.000,00
650
224
€ 45.600,00
€ 211.600,00
€ 52.900,00
302.000
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5. Calculation of the investment
& return
Financing options
Total investment without penthouse € 302.000
1. Initial contribution (own funds) - 10% of total investment
€
30.195,40
2. Financing of Government - 30 % of total investment because efficiency measures have reduced
energy consumption at least 40%
€
90.586,19
3. European project "Jessica" - 15 % of total investment
€
45.293,10
4. Discounted bank loan
€ 120.129,86
5. Total Investment for owners
€ 150.325,26
Total investment with penthouse € 513.560
1. Initial contribution (own funds) - 10% of total investment
€
30.195,40
2. Financing of Government - 30 % of total investment because efficiency measures have reduced
energy consumption at least 40%
€
90.586,19
3. European project "Jessica" - 15 % of total investment
€
45.293,10
4. Discounted Bank loan
€ 308.118,98
5. Total Investment for owners
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€ 338.314,38
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5. Calculation of the investment &
return
Returns calculation - energy saving
Year
Price of
Energy
(€/KWh)
Discounted
heating cost of
the whole
house (€/year)
Price of
electricity
€/KWh
Discounted electricity
cost of the whole house
(€/year)
Discounted
saved sum €
Amount saved over
the years €
2014
0,085
42075,00
0,115
2691,00
39384,00
49230,00
2015
0,089
41835,94
0,121
2675,71
39160,23
88390,23
2016
0,094
41598,23
0,127
2660,51
38937,73
127327,95
2017
0,098
41361,88
0,133
2645,39
38716,49
166044,44
2018
0,103
41126,87
0,140
2630,36
38496,51
204540,95
2019
0,108
40893,19
0,147
2615,41
38277,78
242818,73
2020
0,114
40660,85
0,154
2600,55
38060,29
280879,02
2021
0,120
40429,82
0,162
2585,78
37844,04
318723,06
2022
0,126
40200,10
0,170
2571,09
37629,02
356352,08
2023
0,132
39971,69
0,178
2556,48
37415,22
393767,29
2024
0,138
39744,58
0,187
2541,95
37202,63
430969,92
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5. Calculation of the investment
& return
Returns calculation - sale of penthouse
Estimated selling price/ 1m²
€
1.300,00
Number of apartments
4
Square meters for an apartment (m²)
56
Cost of an apartment
€
Total amount of the sale
€ 291.200,00
72.800,00
We assume that:

bank loan for 10 years with intrests 4,5%

the apartments will be sold within 1 year of construction: and the present value is € 275.757,58
THE GAIN IS (275.757,58 – 187.989,12) = 87.768,46 €
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5. Calculation of the investment
& return - Performance indicators

without Pentahouse
INVESTMENT COSTS
FOR OWNER
€ 150.325,26
PAYBACK
2,5 years
NPV
€ 280.644,66
ROI
187%
ROI = 187 %
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
with Penthouse
INVESTMENT COSTS
OF REFURBISHMENT
€ 150.325,26
PAYBACK
2,5 years
NPV
ROI
€ 280.644,66
187%
INVESTMENT COSTS
OF BUILDING
€ 187.989,12
NPV
€ 87.768,46
ROI
47%
ROI = 234 %
Investments cost = 338.314,38
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5. Calculation of the investment
& return
Goals - Results:
Need to continue renovation effort;
 Need to revive the construction sector
during the crisis;
 Reduce the dependancy on imported
fossil fuel supplies .

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Conclusion
Saving 262 kWh/m2/year energy consumption.
Heating system – geothermal heat pumps.
Sustainable facade – fiber cement blocks, glazed
balconies.
Penthouse – extra 56 x 4 m2.
Return
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ŽIRMŪNŲ G. 116
TEAM :
Norbert Varnyu
Andre Zeferino
Laury Rocca
Kotryna Supejevaitė
Liudmila Rapin