life cycle costing of sustainable strategies · lcc of optimized building items cost (euro/m 2)...
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LIFE CYCLE COSTING OF SUSTAINABLE STRATEGIES
3 climate zones of Turkey
HANDAN GÜNDOGAN, Civil Engineer
1st August 2014
Transsolar Mentor: Monika Schultz
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• overcome COST barrier
• convience the CLIENT
• increase the knowledge in the sector
My Thesis Study Results
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ANKARA - DIYARBAKIR - ISTANBUL
1- Building Envelope Optimization
2- System Optimization
3- Primary Energy Sources (Geothermal, PV, Solar Panels)
4- LCC of applied strategies
OUTLINE
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Simulation Parameters
Internal Gains Offices, 2 people - 75 Watt /each 2 computer - 70 Watt / each 12 W/m2 (500 lux level - lighting load) Work Schedule between 08:00-19:00
Heating
Set point temperature: 19°C (Operative)
Cooling
Set point temperature: 26°C (Operative)
Ventilation
30m3/h per person
5 m
6 m
3 m
N Residential, 1 people - 75 Watt 5 W/m2 (300 lux level - lighting load) 3.4 W/m2 (other loads, fridge, TV, etc.) Work Schedule 24 hours
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ANKARA
ANKARA (office)
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Q lighting
Q cooling
Q heating
in kWh/m2
Base Envelope
Improved Envelope
ANKARA (office)
to improve Building Envelope...
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to optimize Building Systems...
Base Building
Optimized Building
Q electricity
Q heating
Q cooling
in kWh/m2
ANKARA (office)
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in terms of electricity
Base Building
to calculate PRIMARY ENERGY FACTOR...
Optimized Building
ANKARA (office)
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Base Building
ANKARA (office)
in terms of comfort...
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Optimized Building
ANKARA (office)
in terms of comfort...
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Capital Cost Project Cost HVAC and plumbing
Maintenance Cost Taxes Insurance
Operation Cost Energy
Development Cost Current refurbishment Replacement
LIFE CYCLE COSTING
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SNAPSHOT OF LCC EXCEL TOOL
assumed that, all of the materials have a 20
heating and ventilation systems have 20
cooling systems have 15 years lifetime
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LCC OF OPTIMIZED BUILDING
ITEMS COST (Euro/m2)
HEATING 4.31
COOLING 12.60
VENTILATION 11.71
MATERIAL 11.51
TOTAL 40.13
BASE BUILDING
ITEMS COST (Euro/m2)
HEATING
COOLING
VENTILATION 0.00
MATERIAL 34.07
TOTAL 47.99
13.92
OPTIMIZED BUILDING
ANKARA (office)
1 year
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ANKARA (office)
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ISTANBUL
ISTANBUL (office)
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ISTANBUL (office)
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LCC OF OPTIMIZED BUILDING
ITEMS COST (Euro/m2)
HEATING 4.31
COOLING 12.60
VENTILATION 12.17
MATERIAL 10.26
TOTAL 39.34
BASE BUILDING
ITEMS COST (Euro/m2)
HEATING 15.31
COOLING 3.31
VENTILATION 12.17
MATERIAL 31.74
TOTAL 62.54
OPTIMIZED BUILDING
ISTANBUL (office)
4 years
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DIYARBAKIR
DIYARBAKIR (residential)
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DIYARBAKIR (residential)
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LCC OF OPTIMIZED BUILDING
ITEMS COST (Euro/m2)
HEATING 14.69
COOLING 12.24
VENTILATION 0.00
MATERIAL 10.26
TOTAL 37.18
BASE BUILDING
ITEMS COST (Euro/m2)
HEATING
COOLING
VENTILATION 0.00
MATERIAL 15.36
TOTAL 49.06
OPTIMIZED BUILDING
33.69
DIYARBAKIR (residential)
3 years
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To summarize...
CLIMATE Strategies Initial Cost (Euro/m2)
Payback period (years)
ANKARA (office)
Increased insulation Natural ventilation Night Cooling
8
1
ISTANBUL (office)
Glazing Type Mechanical Ventilation
23
4
DIYARBAKIR (residential)
Fixed External Shading Floor Heating and Cooling
12
3
Envelope
(Reduce the demand) Systems
(Prefer high efficiency)
Primary Energy Factor (reduce the energy
consumption)
Comfort (Create More Comfortable Spaces)
COST (save more money)
BASE
OPT
IMIZ
ED
ITEMS COST (Euro/m2)
HEATING 14.69
COOLING 12.24
VENTILATION 0.00
MATERIAL 10.26
TOTAL 37.18
BASE BUILDING
ITEMS COST (Euro/m2)
HEATING
COOLING
VENTILATION 0.00
MATERIAL 15.36
TOTAL 49.06
OPTIMIZED BUILDING
33.69
RESU
LTS
+ Coupling heating/cooling with thermal mass reduces peak load
+ Longer natural ventilation season due to higher surface temperature
+ Higher chilled water and low hot water supply
temperatures provide high potential for energy savings
+ Low initial cost due to integration with structural slab
+ No maintenance
- Response time of several hours, no instant
heating/cooling
- Increased condensation risk due to slower
responsive time
- Acoustic concerns must be handled separately
Q heating
Q cooling
in kWh/m2 in kWh/m
2
Q electricity
Q cooling
Q heating
Q lighting
Q hot water
Q hot water
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