This is the most dangerous animal in the world. It is
responsible for MILLIONS of deaths every year.
By its side, a nice leopard stands peacefully.
At the moment
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300mm Concrete walls
Double-glazed Windows
Old windows- big U-value
New windows- no air
A lot of cold bridges
Before renovation
Envelope
Exterior wall
Roof
Floor
Windows
Stairwell windows
Balcony doors
Exterior doors
Thermal/Cold bridges
Ventilation + infiltration
Heating energy per heated area
Area m2
U-value, W/(m2K)
Heat losses kWh/a
860
450,00
450,00
286,65
25,00
67,20
6,56
2,76
0,68
0,70
2,56
2,80
3,00
2,50
168878
21721
22450
52237
4983
14351
1167
12958
Ventilated area
Heated air capacity
(m3/s)
1859
0,59
Σ
kWh/m2a
Heat losses kWh/a
41999
340743
159,3
Our plan
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To Cover envelope with thermal insulation
Marmoroc cladding
Assemble new balcony railings
Elevator installation
Pent house
Solar panels
Isover thermal
insulations
• External walls
• Sockets
• Roofs
• 250mm glass wool
• Ventilated facade
• Marmoroc slate
External wall
Roof
• 400mm thermal insulation
• Less cold bridges
• Green roof
Penthouse
design
Solar power
Solar panels
on the roof
Penthouse Shape ,Roof slope to south
Solar Heating Task
Table of Contents
• Sun Analysis
• Energy Production
• Types of Solar Panels
• Panel Sizes and Dimensions.
• Fixture and Fitting
• Costs Analysis
Sun Analysis:
• Initial solar survey conducted.
• Vilnius receiving about
140.833hrs yearly.
• Average temperature6.1degree Celsius.
• Average Insolation from sun2.1KWH/m2/day.
Solar Panel System
Solar Panel System Consists of:
• Photo Voltaic Panels- Captures
sun’s radiation and converts in to
DC.
• An Invertor- Converts DC to AC.
• Battery- Stores power for future
use.
• Racking System- Used for
supporting the panel systems.
Energy Production:
• Energy produced by
converting light energy in
to electric energy by
photo-voltaic effect.
• Only 15% of sun’s
insolation could be used.
• Efficiency is maximum
when panels are placed
perpendicular to the sun’s
alignment.
Winter
12° angle
Spring/Autumn
35° angle
Summer
58° angle
Types of Solar Panels-
Thin Film
Crystalline
• Photovoltaic Panels are
basically silicon based solar
panels.
• Two types- Crystalline and
Thin Film.
• New innovationBIPV(Building Integrated
Photo Voltaic) solar panels.
Panel Sizes and Dimensions
• Panels proposed for this project are
of dimension
Length-1952mm, Breadth- 952mm,
Depth-50mm Make- Schutten
• Invertor- Solarmax 6000S- Max
Power- 6000W.
• Racking Systems- Unirac Solar
Mount.
• GWL Solar Battery- 12V-40A
Cost Analysis•
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Cost of PV systems per m2- 190 €
Total proposed area of solar panels- 530m2
Total costs including labor and taxes- 100700 €
Average insolation received per day in Vilnius- 2.81KWH/m2/day.
Approximate efficiency of PV system- 15%
Total Energy Produced per year- 2.81*0.15*530*365= 81539KW
Cost of 1KWH in Vilnius- 0.145€
Total Energy Savings per year- 81539*0.145= 11,823 €
Static Amortization Time- 100,700/11,823= 8.51 yrs approx 9 yrs
Loan Calculation• Taking loan for 90% of investment cost,
Loan Amount – 90,630 €
Interest on Repayment- 4%
• Considering payback by installments for a period of 20 yrs
• Installment Amount per year per apartment- 151.05€
Balcony
• Replace concrete railings
with glass
• New wood-aluminium
triple-glass windows
• Thermal insulation
Façade
material
building skin and
solar power generator
Design +
materials
Foldable facades
Folded
Creates a sun barrier ,
Accumulates solar energy
Unfolded
Keep heat inside,
allow light to pass trough
Design
of the facade
The initial balcony
Aesthetics
Function
Sustainability
Cost
The proposed balcony
Façade balcony
material
The Photovoltaic Glass Unit (PVGU)
Pythagoras Solar PVGU products are designed for vertical
curtain wall and skylight applications and can be optimized
for elevation, location, and climate zone.
Energy efficiency
Extremely low solar heat gain
coefficient
Low U-values
Daylighting
Energy generation
4X power density of existing
BIPV technologies
Daylighting
Optimized transparency
Choice of colors Modern look
Adaptable design Available in
skylight, curtain wall, and
colored tiles
South Facade
East Facade
West Facade
Socket
• 200mm thermal insulation
• From external wall
1,5m deep
Basement
• 150mm thermal insulation
• Pipe insulation
After renovation
Envelope
Exterior wall
Roof
Floor
Windows
Stairwell windows
Balcony doors
Exterior doors
Thermal/Cold bridges
Area m2
860
465
450
287
54
67
7
Ventilated area
Ventilation + infiltration
1859
U-value, W/(m2K) Heat losses kWh/a
0,15
0,09
0,14
0,70
0,90
0,80
0,80
7373
2373
3630
11376
2753
3048
298
4430
Heated air
Heat losses kWh/a
capacity (m3/s)
0,82
Σ
Heating energy per heated area
kWh/m2a
16735
52015
28,0
Current data
Month
Heating Season
2010/2011
2011/2012
2012/2013
October
10,51
4,37
5,62
November
12,96
15,7
12,01
December
22,71
15,24
20,3
January
14,89
15,42
21
February
22,86
23,6
14,74
March
19,67
20
22
8,75
9,2
15
April
Average of 3 last years kwh/m2 at winter per month
15,55
Average of 3 last years kwh/m2 per year
108,85
Living space m2
Kwh per building per year
Nowaday price per kwh
Building heating price per year (Lt)
Efficiency of refurbishment
1859
203331,8
0,295
59982,81
81,8%
Building heat price after refurbishment (Lt)
10916,87
Saves per year (Lt)
49085,94
(information source: http://online.dalkia.lt/saskaitos/pastatai.aspx )
Estimate of energy efficiency
increasing works
Comparison to realized project
• 5 floors, 30 flats house built in 1974
• Investment - 532 576 Lt
• Energy efficiency- 50,47 %.
(information source:
http://www.atnaujinkbusta.lt/index.php/lt/g/atnaujink-busta/pavyzdziu-galerija )
PAYBACK of energy efficiency
increasing works
• Government of Lithuania subsidies 15% of
house refurbishment investments
• If people pays 10% (58957,22 Lt) from their
own money, other money should come from
loan of bank. Loan sum = 530615
PAYBACK of energy efficiency
increasing works(1)
Prognosis
• Payback of investments will be even faster, for example in
2018 the sum of payback will be about 72500 (at the moment
49085,94). So the real investment payback period will be 3-4
years shorter.
60.00
56.50
47.50
50.00
38.50
40.00
20.68
15.29
10.90
10.00
37.39
29.29
25.53
21.37
20.00
29.50
29.30
30.00
45.49
21.19
13.02
7.80
0.00
2008
2009
2010
2011
Heating - cnt/kwh
2012
Hot water lt/m3
2015
2018
2021
Penthouse calculations
• Building of penthouse requires to build an
elevator because of excess of floors
• The main part of 121m2 will be sold. Because
of such extraordinary and original
construction and living space we expect to sell
it for 5000Lt/m2 and obtain the 605000Lt.
Penthouse calculations (1)
Beekeeping on a
roof
+
=
Thank you
This was the
first slide.
Did you
notice the
grumpy cat?
NOT BAD…