The Current Situation of Energy Saving and Low Carbonizing Effort
in Tokyo
The Current Situation of Energy Saving and Low Carbonizing Effort
in Tokyo
Global Energy Basel 2012
February 21, 2012
TOMOHISA TAKEBE
ACROS Fukuoka
Green
National Institute of Radiological Sciences
Nagakute Japanese Government Pavilion for Expo 2005 Aichi
Wind
NATC(Nissan Motor Co., Ltd. Advanced Technology Center)
Nihon University Funabashi Campus No. 14
Incubation On Campus, Waseda University Honjo Campus
Solar
Itoman City Hall
National Institute of Advanced Science & Technology (AIST), Waterfront of Tokyo
Mabuchi Motor Company Headquarters
5Presentation TopicsPresentation Topics
1.Current situation of energy saving in Japan and Tokyo after the earthquake
2.Low Emission Buildings TOP30 in Tokyo, and the latest energy efficiency technologies in Japan
3.Impact on the spread of Low Emission Building by Tokyo’s Policy
1
1. Current situation of energy saving in Japan and Tokyo after the earthquake
1. Current situation of energy saving in Japan and Tokyo after the earthquake
7Hot and humid summer, and power shortage Hot and humid summer, and power shortage
-10
-5
0
5
10
15
20
25
30
40 50 60 70 80 90 100
相対湿度の月別平年値(%)
℃気
温の
月別
平年
値(
)
Tokyo Berlin Wien Sapporo
Climograph (Average value of 1971 to 2000)
Tokyo, Hot and Humid SummerPeak Power hike in Summer by
Cooling LoadA Big Social Experiment for
Energy SavingIn the Station and the
Underground Passage, Escalators and Lightings were cut
te
mp
era
ture
()
℃
relative humidity (%)
2
In the Station In the train Escalator
8Energy-saving situation in the summerEnergy-saving situation in the summer
Source : the questionnaire by the TMG
3
Lighting has been reduced to about 300-500lx in the Office Room Air Temperature have been raised to more than about 28 deg CElevators and Escalators have been partially suspendedEnergy Consumption trend used has been shifted from Electric to GasPeak power could be reduced by 15-30% in 2011
Illuminance Elevator suspension
Peak Power reduction rate
lighting reduction Room Air Temperature
17 26 27 14 11 4 1
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
2011 summer
more than 30% 25% 20% 15% 10% 5% No reduction
2
5
4
1
22
17
10
46
38
87
26
41
0% 20% 40% 60% 80% 100%
2010 summer
2011 summer
Predicted in 2012
almost all units more than half units partially None suspended
2
16
12
19
55
50
49
14
19
16
1
4
14
15
11
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
2010 summer
2011 summer
Predicted in 2012
< 300lx about 500lx about 750lx > 1000lx unknown No answer
3
1
2
2
10
9
2
40
35
11
41
33
81
8
20
0% 20% 40% 60% 80% 100%
2010 summer
2011 summer
Predicted in 2012
all 3/4 1/2 1/4 No operation unknown
0
2
1
33
66
60
11
15
13
33
14
19
13
3
4
8
1
3
2
1
1
0% 20% 40% 60% 80% 100%
2010 summer
2011 summer
Predicted in 2012
> 29℃ 28℃ 27℃ 26℃ 25℃ < 24℃ unknown
9Deterioration of the Emission Factor of Power and Investment in BCPDeterioration of the Emission Factor of Power and Investment in BCP
Trends in emissions per unit power (A General Electricity Utility)
Deterioration of the Emission Factor of Power (due to the nuclear power plant suspensions)
We need to proceed further on Building Energy Saving
Source : The Federation of Electric Power Companies of Japan
Value that reflects the Kyoto mechanism credits
4
Deterioration of the Emission Factor of Power?
BCP (Business Continuity Plan) Raising Awareness of BCP (Business Continuity Plan) Increased of Investment in Power Generation System
(On -site Power Generation and Co-generation)
2. Low Emission Buildings TOP30 in Tokyo, the latest energy efficiency technologies in Japan
2. Low Emission Buildings TOP30 in Tokyo, the latest energy efficiency technologies in Japan
11
TOKYOMETROROLITAN GOVERNMENT
TOP30 buildings were selected in line with the policy measures of TMG.
Existing buildings section:Highly valued in the C&T Program
New building section: Based on the evaluation of the
Green Building Program
5Selection of Low Emission Buildings TOP30Selection of Low Emission Buildings TOP30
12
Top Level Facility Certification In the Tokyo Cap-and-Trade Program
Assessment category Required
General
Extra credit
I. General Management Establishment of cooperative structures for energy conservations, energy management status
23 4 1
II. Energy Performance (building Shells and equipments) Energy efficiency of air conditioning, lighting, and other facilities, equipment efficiency (COP), etc.
26 39 45
III. Operations Indoor temperature and humidity management, facility maintenance and management, etc.
25 56 9
Total 228 items
TOP30 Existing Building SectionTOP30 Existing Building Section 6
Top-Level Installation : Total Score of 80 or more Near-Top-Level Installation : Total Score of 70 or more Scores are set so that the total for Required items and General items is 100 Extra credit items are added if additional items are applicable
13
Assessment of Energy PerformanceIn the Tokyo Green Building Program
Assessment category Criteria
I. Heat load resistance of the shell
Heat insulation of walls and windows, measures for shielding them from sunlight, etc.
20% or higher reductions from PAL standard (the national standard)
II. Energy efficient equipments
Introduction of energy saving measures in the facilities (air conditioning, lightings, ventilation, water heating, and elevators)
30% or higher ERR standard (aggregation of the national standard)
III. Efficient operation systems Measurement and energy management
system for optimal operation
Level 2 or higher Ex; Introduction of certain level of BEMS
IV. Use of renewable energy On-site installation of renewable energy
including PV and solar heat system
Amount of renewable energy introduced Ex; 30kW in the case of PV
★ Perimeter Annual Load (PAL) ★★ Energy Reduction Ratio (ERR)
★★★ Building and Energy Management System (BEMS)
7TOP30 New Building SectionTOP30 New Building Section
148
15The Latest Architectural Energy-Saving Technology in JapanThe Latest Architectural Energy-Saving Technology in Japan
Double Skin Façade, Air Flow Window Louver, Light Shelve Solar control blind system Swing Window Lighting Duct Eco void for Natural lighting and Natural Ventilation Cool & Heat Trench for use of Geothermal Heat etc.
Cool & Heat Trench
Air Flow WindowDouble Skin
Louver etc. Light Shelve
Eco void
Swing Window (Moving in the wind )
Balance weight
Axis
Lee
9
16
The Latest Energy-Saving Technology in Air Conditioning System and Lighting System
The Latest Energy-Saving Technology in Air Conditioning System and Lighting System
Air Conditioning System High Efficiency Heat Source Equipment
(Inverter Turbo Chiller and High Efficiency Heat Pump etc.) Geothermal Heat Pump Medium Temperature Chilled Water System Radiant Cooling and Heating System Separation of Latent Heat & Sensible Heat Air
Conditioning System Task & Ambient Air Conditioning System
Lighting System High Efficiency LED Lighting ( >100lm / W) Lighting Control System with Motion Sensors
and Illumination Sensors Task & Ambient Lighting System
10
3. Impact on the spread of Low Emission Building by Tokyo’s Policy
3. Impact on the spread of Low Emission Building by Tokyo’s Policy
18Tokyo’s Policy impacted on Low Emission buildingTokyo’s Policy impacted on Low Emission building
History of Low Emission BuildingsIn Japan, Low Emission Buildings has been
built gradually since the mid-2000sAccelerated in the 2010s
Low Emission Buildings and Management High Interest Owners to CO2 Reduction are
actively investing in energy saving, as part of their Management Strategy
Energy Saving has become business challenges by Tokyo’s policy
11
19Tokyo’s Policy impacted on Low Emission buildingTokyo’s Policy impacted on Low Emission building
1. Tokyo Green Building Program Japan’s First Building Environmental EvaluationPropagated the Philosophy of Green Building
2. The Conditions of Urban Development to Contribute to Low Emission Regulated the efforts of the carbon negative over a
certain level to be applied to urban development Effectively developers are required to build high-
environmental performance building only in their large-scale development
3. Certification as Top-Level Installation Top-Level Installation has become a brand all leading developers aim for top-level installations
12
20At the end : Next Stage to ZEBAt the end : Next Stage to ZEB
Source : For Implementation and Deployment of ZEB
Image of ZEB
Amount of Energy-saving Technology and Energy Saving
In Japan, Advance the Development of ZEB aims to realize the new construction for all public buildings to be ZEB by 2030
Light Duct System
VWV & VAV Control System
CO2 Outdoor Air Control System
Photovoltaic Power Generation System
High Efficiency Heat Source Equipment
LED LightingLighting ControlMotion Sensors Control SystemInitial Illumination Correction Control System Use Daylight Control SystemBlind control System
Natural ventilationNight purgeHybrid air conditioning control System
Integrated control System Utilization of unused energy of the city
MJ/(m2 ・y)
Passive ArchitectureUse of Natural Energy
High Efficiency Heat SourceLow Transport
High Efficiency Lighting
Low OA equipment
Other
PV
standard case
13
21
Thank you for your attention