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.

• 300mm Concrete walls • Double-glazed Windows • Old windows- big U-value• New windows- no air• A lot of cold bridges

At the moment

Before renovation

Envelope Area m2 U value, W/(m‑ 2K) Heat losses kWh/a

Exterior wall 860 2,76 168878Roof 450,00 0,68 21721Floor 450,00 0,70 22450Windows 286,65 2,56 52237Stairwell windows 25,00 2,80 4983Balcony doors 67,20 3,00 14351Exterior doors 6,56 2,50 1167Thermal/Cold bridges 12958

Ventilated area Heated air capacity

(m3/s) Heat losses kWh/a

Ventilation + infiltration 1859 0,59 41999 Σ 340743

Heating energy per heated area kWh/m2a 159,3

Our plan

• To Cover envelope with thermal insulation• Marmoroc cladding• Assemble new balcony railings• Elevator installation• Pent house• Solar panels

• External walls• Sockets • Roofs

Isover thermal insulations

External wall

• 250mm glass wool• Ventilated facade• Marmoroc slate

Roof

• 400mm thermal insulation• Less cold bridges• Green roof

Penthouse Shape ,Roof slope to south

Solar powerSolar panels on the roof

Penthouse design

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 temperature-

6.1degree Celsius.• Average Insolation from sun-

2.1KWH/m2/day.

Solar Panel SystemSolar 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 Spring/Autumn Summer

12° angle 35° angle 58° angle

Types of Solar Panels-• Photovoltaic Panels are

basically silicon based solar panels.

• Two types- Crystalline and Thin Film.

• New innovation- BIPV(Building Integrated Photo Voltaic) solar panels.

Crystalline

Thin Film

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-• 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

building skin and solar power generator

Façade material

Design + materials

Foldable facades

Unfolded

Keep heat inside, allow light to pass trough

Folded Creates a sun barrier , Accumulates solar energy

Design of the facade

The initial balcony The proposed balconyAestheticsFunctionSustainabilityCost

Energy efficiency

Extremely low solar heat gain coefficientLow U-valuesDaylighting

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

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.

Façade balcony material

South Facade

East Facade

West Facade

Socket

• 200mm thermal insulation• From external wall 1,5m deep

Basement

• 150mm thermal insulation• Pipe insulation

After renovationEnvelope Area m2 U value, W/(m‑ 2K) Heat losses kWh/a

Exterior wall 860 0,15 7373Roof 465 0,09 2373Floor 450 0,14 3630Windows 287 0,70 11376Stairwell windows 54 0,90 2753Balcony doors 67 0,80 3048Exterior doors 7 0,80 298Thermal/Cold bridges 4430

Ventilated area Heated air

capacity (m3/s) Heat losses kWh/a

Ventilation + infiltration 1859 0,82 16735 Σ 52015

Heating energy per heated area kWh/m2a 28,0

Current dataMonth 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

April 8,75 9,2 15

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 1859

Kwh per building per year 203331,8

Nowaday price per kwh 0,295

Building heating price per year (Lt) 59982,81

Efficiency of refurbishment 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.

2008 2009 2010 2011 2012 2015 2018 20210.00

10.00

20.00

30.00

40.00

50.00

60.00

15.29

21.3725.53

29.30 29.50

38.50

47.50

56.50

7.8010.90

13.02

20.68 21.19

29.29

37.39

45.49

Heating - cnt/kwh Hot water lt/m3

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…