1. Sustainable Refurbishment, Retrofit, Energy Management
ŽIRMŪNŲ G. 116
Sustainable Refurbishment, Retrofit, Energy Management
TEAM :
Norbert Varnyu
Andre Zeferino
Laury Rocca Serra
Kotryna Supejevaitė
Liudmila Rapin

2. Team introduction
Norbert
Laury
Andre
Liudmila
Kotryna
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3. Greater Bamboo Lemur
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4. Greater Bamboo Lemur Facts about the greater bamboo lemur:
it was believed to have become extinct by the early 20th century.
only 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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5. Content Problem statement Energy efficiency Heating system
Design & construction
Penthouse proposal
Calculation of the investment & return
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7. 14/11/2018

8. 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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9. 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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10. 1. Energy efficiency Green roof Extensive green roof
Insulation : 200 mm polyurethane
 λ = 0,025 W/m.K
U-Value = 0,12 W/m2.K
ϕ = 1,98 kW
Green roof substrate
Filtre Layer
Drainage layer
Protection mat
Waterproof membrane
Insulation
Vapour control layer
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11. Insulation of ground floor
1. Energy efficiency
Ground floor
Insulation of ground floor
Insulation : 200 mm polyurethane
 λ = 0,025 W/m.K
U-Value = 0,123 W/m2.K
ϕ = 0,6 kW
Insulation
Slab
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12. 1. Energy efficiency Sustainable and alternative insulation
Embodied energy
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13. 1. Energy efficiency Windows and balcony doors Wood PVC Aluminum
thermal conductivity
Price
Maintenance
Durability
recyclable
Wood
PVC
Aluminum
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14. 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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15. 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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16. 1. Energy efficiency Differences Actual/After HEAT LOSSES KW
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17. 1. Energy efficiency Actual After 137,5 kW 28,5 kW Total heat losses
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18. 1. Energy efficiency Actual After 275 kWh/m2/year 13 kWh/m2/year
Consumption
Actual
After
275 kWh/m2/year
13 kWh/m2/year
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19. 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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20. 2. Heating system Choice of sensors Heat pump Horizontal sensors
Depth : 60/120cm
Vertical sensors
Depth : 100m
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21. 2. Heating system For the project Vertical sensors : 570 m of sensors
 6 drilling of 95 m
Horizontal sensors : 2880 ml of sensors  m2 of surface area
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22. 2. Heating system Choice of sensors Efficiency Price Area required
Vertical sensors
Horizontal sensors
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23. 2. Heating system 2 ways to install sensors
Severals strates of sensors
1 strate of sensors
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24. 2. Heating system Heat pump and system for 1 block of the building
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25. 3. Design & construction Cladding alternatives
Cost
product life (years)
life cycle thinking
practice
stucco
average
50+ (depending on maintenance)
good
standard
brick
high
100+
wood
(depending on maintenance)
fiber- cement
low 50
better
May require some training (cutting & sealant joints)
aluminum
20-50
vinyl 25
typical
hardboard
10-25
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26. 3. Design & construction Embodied energy for façade materials
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27. Fiber cement board – Simple & Sustainable
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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28. 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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29. 3. Design & construction
Cladding system
The original facade would insulated and overcladed
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30. 3. Design & construction
Cladding system
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31. Cladding system Fire Barrier
3. Design & construction
Cladding system Fire Barrier
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32. 3. Design & construction
Cladding system Frame
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33. 3. Design & construction
Window in the facade
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34. 3. Design & construction
Balcony
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35. Lets bring a facade to life
3. Design & construction
Lets bring a facade to life
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36. ENCLOSING or OPEN BALCONIES ?
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
ENCLOSING or OPEN BALCONIES ?
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37. Frameless sliding system
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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38. 14/11/2018

39. 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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40. 14/11/2018

41. 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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42. x. Green penthouse
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43. 5. Calculation of the investment & return
Phases
Assumptions
Cost calculation
Financing options
Returns calculation
Performance indicators
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44. 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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45. 5. Calculation of the investment & return Cost calculation
Refurbishment costs
Description
Cost
Windows/Doors
€ ,04
Facade
€ ,28
Balcony
€ ,04
Insulation/Heating
€ ,51
Roof
€ ,26
Labor costs
€ ,85
Maintenance costs
€ ,00
Total cost €
Construction costs of Penthouse
Description
Price €
Quantity
Cost €
Elevator (€/level)
5300 10
€ ,00
Staircase (lightweight) €/level
1300
€ ,00
Building cost (€/m²)
650
224
€ ,00
Total cost
€ ,00
Cost for an apartment
 € ,00
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46. 5. Calculation of the investment & return Financing options
Total investment without penthouse €
1. Initial contribution (own funds) - 10% of total investment
€ ,40
2. Financing of Government % of total investment because efficiency measures have reduced energy consumption at least 40%
€ ,19
3. European project "Jessica" % of total investment
€ ,10
4. Discounted bank loan
€ ,86
5. Total Investment for owners
€ ,26
Total investment with penthouse €
1. Initial contribution (own funds) - 10% of total investment
€ ,40
2. Financing of Government % of total investment because efficiency measures have reduced energy consumption at least 40%
€ ,19
3. European project "Jessica" % of total investment
€ ,10
4. Discounted Bank loan
€ ,98
5. Total Investment for owners
€ ,38
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47. 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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48. 5. Calculation of the investment & return
Returns calculation - sale of penthouse
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 € ,58
THE GAIN IS ( ,58 – ,12) = ,46 €
Estimated selling price/ 1m²
€ ,00
Number of apartments 4
Square meters for an apartment (m²) 56
Cost of an apartment
€ ,00
Total amount of the sale
€ ,00
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49. 5. Calculation of the investment & return - Performance indicators
without Pentahouse
ROI = 187 %
with Penthouse
ROI = 234 %
Investments cost = ,38
INVESTMENT COSTS FOR OWNER
€ ,26
PAYBACK
2,5 years
NPV
€ ,66
ROI
187%
INVESTMENT COSTS OF REFURBISHMENT
€ ,26
PAYBACK
2,5 years
NPV
€ ,66
ROI
187%
INVESTMENT COSTS OF BUILDING
€ ,12
NPV
€ ,46
ROI
47%
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50. 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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51. 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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52. Sustainable Refurbishment, Retrofit, Energy Management
Thank you for the attention
ŽIRMŪNŲ G. 116
Sustainable Refurbishment, Retrofit, Energy Management
TEAM :
Norbert Varnyu
Andre Zeferino
Laury Rocca
Kotryna Supejevaitė
Liudmila Rapin