Green Indoor Climate Projects in Japan - Overcoming Regional Climatic Variety and Project Complexity
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Transcript of Green Indoor Climate Projects in Japan - Overcoming Regional Climatic Variety and Project Complexity
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Green Indoor Climate Projects in Japan
- Creating Value for Real Estate
TBLI „Green Real Estate“ Workshop
TBLI Conference Asia 201027th of May, 2010
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Contents
• Introduction
• Indoor Climate and Real Estate (i.e. Office)
• Comfort and Productivity, Air Quality and Health
• An alternative Approach
• Economics – Case Study Bank Building in Tokyo
• Ecology – Case Study Orangerie Kumamoto
TBLI Green Real Estate Work Shop2010/05/27
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Value to Real Estate (i.e. office)
Value to Real Estate (i.e. office)
Indoor ClimateIndoor Climate
Indoor Climate and Real Estate
ComfortComfort
Increased Work
Performance
Increased Work
Performance
Air QualityAir Quality
ReducedSick LeaveReduced
Sick Leave
Ressource EfficiencyRessource Efficiency
ReducedCosts/
Emissions
ReducedCosts/
Emissions
TBLI Green Real Estate Work Shop2010/05/27
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Comfort and Productivity
„Some calculations show that the estimated cost (productivity, health) of poor indoor environment is higher than energy costs of heating and ventilation of the same building ...
Olli Seppänen 2005Professor at Helsinki University of Technology, Finland
President of Federation of European Heating and Air-conditioning Associations
TBLI Green Real Estate Work Shop2010/05/27
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Comfort and Productivity
Seppänen et al. 2005
Temperature/Performance
TBLI Green Real Estate Work Shop2010/05/27
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Seppänen and Fisk 2005
Ventilation/Performance
Comfort and Productivity
TBLI Green Real Estate Work Shop2010/05/27
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Air Quality and Health
Fisk et al. 2003
Ventilation/Sick Leave
TBLI Green Real Estate Work Shop2010/05/27
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An alternative Approach
TBLI Green Real Estate Work Shop2010/05/27
Air Quality&Efficiency
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The System
TBLI Green Real Estate Work Shop2010/05/27
• HR-C
• Heatpumps
• Architecture/ Shadowing
• Natural Ventilation
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Economic Relevance
TBLI Green Real Estate Work Shop2010/05/27
In an average office building, Energy Costs represent about 19% of the Total Costs.
Heating and Cooling account for approx. 48% of the Energy Costs
The Relevance of Heating and Cooling to the overall running Costs (Office) can be calculated 0.19 x 0.48 = approx. 9%
E Source LLC 2006
9% of the overall running costs
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Case Study - Bank Building, Tokyo
Cost Type HR-C HR-C + GeoE Trad. AirCon
Initial Costs ¥87‘000‘000 ¥110‘000‘000 ¥71‘500‘000
Annual Running Costs (x30)
¥3‘022‘000 ¥2‘541‘000 ¥4‘640‘000
Annual Maintenance Costs (x30)
¥927‘000 ¥927‘000 ¥3‘000‘000
Renewal Costs (over 30 years)
¥85‘200‘000 ¥85‘200‘000 ¥77‘800‘000
TOTAL COSTS ¥290‘670‘000 ¥299‘240‘000 ¥378‘500‘000
Cost Analysis of Indoor Climate Installations New bank building in Tokyo, 5 levels, approx. 2000
sqm,
30 year horizon
no discount-rate, no inflation, steady energy prices
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TBLI Green Real Estate Work Shop2010/05/27
• 90 year old building in Kumamoto (Kyushu)
• Massive 1920s-construction with smart architecture and alignment - an opportunity for a PS-demonstration
Sustainable renovation in 1998 – cutting-edge in Japan
Case Study – Office, Kumamoto
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Case Targets
TBLI Green Real Estate Work Shop2010/05/27
• Comfort Target: Overcoming the humid and hot summer of Kyushu Island while providing soft heat in winter
• Sustainability/Quality Target: Highest quality and sustainability to maintain the 90 years old building structures and create a high quality indoor climate
• Energy Target: High resource efficiency while fulfilling the quality and comfort Targets
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Period Heating MAXkW
Cooling MAXkW
ConsumptionJoule per Year
Before Rennovation
72.0 kW 65.0 kW 1672 MJ
After Rennovation
18.0 kW 26.1 kW 416 MJ
Percentage After/Before
24% 40% 25%
Energy Results
TBLI Green Real Estate Work Shop2010/05/27
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Project Results
TBLI Green Real Estate Work Shop2010/05/27
• Meeting Comfort, Quality and Efficiency targets
• A sustainable Renovation, symbolic for a new age of Japanese construction
• A monumental project, demonstrating and adding Value to it‘s environment
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ARIGATO GOZAIMASHITA!Looking forward to discussions at the reception
Green Indoor Climate Projects in Japan - PresentationTBLI „Green Real Estate“ WorkshopTBLI Conference Asia 2010Date: 27th of May 2010Speaker: Takehisa Hirayama, CEO PS Group Ltd.Slides: Roman Zimmermann, Assistant PS Group Ltd.