Approach to Low Carbon, ZEB

and Smart Energy of Obayashi Corporation Technical Research Institute Main Building

“TECHNO-STATION” Obayashi Corporation Tokyo Headquarter

Technology Division

Architectural & Engineering Division

Fact Sheet of Building

Address: 4-640 Shimokiyoto, Kiyose City

Type of building: Office building

Site area：69,401 sq. m

Total floor area：5,535 sq. m 3 stories above ground

Completion: September , 2010

Environmental Rating: CASBEE New Const. 2008

S rank BEE=7.6

Model project by MLIT that Reduce CO2 Emissions

Intellectual Workspace

with Consistency

of Productivity Promotion

and CO2 Emission Reduction

2

Keyaki Avenue

Suburb Site of Tokyo Metropolitan Area with Preserved Natural

Forest

Site

▲

Kiyose Station

Large One Box Work Space

3

Map of Technologies of CO2 Reduction4

CO2 Emission Reduction (Design Value)5

ＣＯ２ Reduction ５５％

CGS 19,037

Wind Power

175Photovoltaic Panel

52,290

45％

100％

Typical Typical Typical Typical

office buildingoffice buildingoffice buildingoffice building

237,936

97［［［［kg-CO2/㎡㎡㎡㎡・・・・ Annual ］］］］

43[kg-CO2/㎡㎡㎡㎡・・・・Annual]

536,895

[kg－－－－CO2／／／／Annual]0 100,000 200,000 300,000 400,000 500,000 600,000

Energy Creation

10％

Energy Saving

45％

Carbon OffsetCarbon OffsetCarbon OffsetCarbon Offset

Main BuildingMain BuildingMain BuildingMain Building

TechnoTechnoTechnoTechno----StationStationStationStation

Ecological Roof, Perimeter Buffer 6

Daylight Lighting by

indirect reflected light

Photovoltaic Power Generation

Panels installed 30 deg incline

TerraceSolo Lounge

Workspace

Café Spot

Terrace

VIEW

Perimeter Buffer

Air Barrier

Displacement Natural Ventilation7

Fresh Air Ventilator

Upstream Air Flow

Exhaust Ventilator

Fresh Air Incoming

Exhaust Air Flow

Terrace

Solo Lounge

Work Space

Café Spot

VIEW

Terrace

Organized Integration of System HVAC

●Medium Chilled Water Storage System using Latent Heat Storage Material

●Latent and Sensible Heat Separated Personal Radiant HVAC System

●Lighting and HVAC Control by RFID IC Tag

●Hybrid Heat Pump System of Geothermal and Well Water

Latent Heat Storage Material

Jointly Developed with Jx Nikko Nippon Oil and Energy Corporation and prof. Yamaha Chubu University

Manufactured by NEC Corporation & Obayashi Corporation

Jointly Developed with PS Company Ltd. and .supervised by Nobe Laboratory of Kogakuin University

Raised Floor

Floor mounted FCU for

Perimeter Buffer

Well Floor Diffusing

High Side Light

Backup Cooling Tower

RA for Re-generation Exhaust

OA for HVAC

Desiccant OHA

Micro CGS Waste Heat

To Irrigation

Chilled Water Tank

Well Water Tank

Heat Exchanger

Heat ExchangerHeat

Exchanger

Duct

Bo

re Ho

le

C/H Water Hose

Exhaust in SummerUse for Foyer

RA

AH

U

Air Source Heat Pump

Ground Coupled

Heat Pump

Medium Chilled Water Tank

Chilled Water

Medium Chilled Water

Term

inal

Task Panel

Free Cooling OA

8

Personalized HVAC by Task Panel

Ordinary

28℃ 26℃

Personal Diffuser

Floor Diffusing

Personal HVAC by Task Panel

28~30℃

Apporox. 26℃

27~28℃

15℃ Medium Chilled Water

Personal Task Panel

Personal Floor Diffusing

Task ZoneAmbient Zone

Task Panel

ＣｏｎｖｅｃｔｉｏｎＣｏｎｖｅｃｔｉｏｎＣｏｎｖｅｃｔｉｏｎＣｏｎｖｅｃｔｉｏｎ

from Task Panel

Jointly Developed with PS Company Ltd. and .supervised by Nobe Laboratory of Kogakuin University

9

RFID Tag for Access Control and

Lighting/HVAC Control10

RFID Tag Antenna

RFID Tag Recognition System BMS Lighting/HVAC Control for Individual

DeskMagnetic Field of Small Trigger Unit

Individual Security Card (RFIDTag)

Small Trigger Unit (Under Desk)Individual Diffuser

0

100'000

200'000

300'000

400'000

500'000

600'000

Standard

Tokyo Office

Design Spec. FY2011

Results

FY2012

Results

FY2013

Results

An

nu

al C

O2

Em

issi

on

(t-

CO

2/m

2)

Results of CO2 Emission Reduction Action

55% Reduction 57.4% Reduction

CO2 Credit 230t64.7% ReductionCO2 Credit190t 64.3% Reduction

CO2 Credit192t

Realization of Emission ZEB by

Carbon Credit

11

Environmental Evaluation CASBEE-

Existing Buildings12

Environmental Evaluation LEED-EBOM� Trial Case for LEED（Leadership in Energy and

Environmental Design）Certification from the US� LEED-EBOM（Existing Building Operation &

Maintenance）Platinum Certification� 95/110 points（No.3 in the World, No.1 in Japan）

20

13

33

713

5

4

SS:敷地(26)

WE:水利用(14)

EA:エネルギー・大気

(35)

MR:材料・資源(10)IAQ:室内空気質(15)

IP:革新性(6)

RP:地域性(4)

13

Sustainable Site (26)

Water Efficiency (14)

Energy and Atmosphere (35)

Material and Resources (10)Indoor Environmental Quality (15)

Innovation in Design/Operation (16)

Regional Priority (4)

Asia Pacific Network Award�Finalist 2014

14

Definition of ZEB� Definition by Calculation of Energy Consumption

Definition Evaluation

SiteZEB

Simple Energy (usually Electricity) do not convert ot primary

energy

SourceZEB

Multi source energy (NG, Electricity or Oil, etc.) will convert to

primary energy

CostZEB

Energy Cost Evaluation（Multiple Energy Source, Cost difference）

EmissionZEB

Evaluation by CO2 Emission（Multiple Energy Source）

※NREL“Zero Energy Buildings：A Critical Look at the Definition”(Jun. 2006)

Defined by the official report from MITI (Workgroup of Realization and

Expansion of ZEB) Nov. 2009

It is not defined for Biomass Power and Waste Energy.

Essentially, Primary Energy Calculation

15

Scenario for Source ZEB

「一次エネルギー消費量」

「再生可能エネルギーによる一次エネルギー削減量」

「年間の一次エネルギー収支」＝「 一次エネルギー消費量」-「再生可 能エネル ギーによる一次エネルギー削減量」

2'577

886

0

299

1'000

1'185 1'100

(300)

0

300

600

900

1'200

1'500

1'800

2'100

2'400

2'700

Source

ZEBA

nn

ua

l P

rim

ary

En

erg

y C

on

sum

ptio

n p

er

Flo

or

Are

a [

MJ/(

m2・

ye

ar)

]

65％Reduction

FY2014

Source ZEB PlanFY2013Results

Standard Building

(Envir. Karte Tokyo)

1,200

16

Primary Energy Consumption

Primary Energy Reduction by Renewable Energy

Annual Energy Balance = Primary Energy Consumption -

Primary Energy Reduction by Renewable Energy

Countermeasure for ZEBTarget Item

Additional Energy Saving maintaining Comfort

Improvement of HVAC control

Latent Heat Storage TankExpand Usage to Personal HVAC

Construct more Accurate Method of Thermal Stored Value

Ground Coupled HPAdd VWF of Heat Source Water

Avoidance of Low Load Operation of HP

Desiccant OAHUAdd VRD Control of Desiccant Rotor

Increase Heat Recovery by Inlet Position Control

Anti-Freezing Operation Add Intermittent Operation

Personal HVAC Add Schedule Control

Heat Source Control Optimize Pump Operation Control

HVAC Control Optimize VAF and SAT control of OAHU and AHU

Natural Ventilation Damper

Improve Air Seal Performance

Cool Pit, Warm Pit Expand Operation Period

Improvementof Plumbing Control

Solar Water Heating Connect to Kitchen

Water Supply Pump Optimize Pressure Control

Improvement of Lighting Control

Ambient Lighting LED from HfFL

Ambient Lighting Dimming Control in the Night

Thermal Accommodation to Next Building

CGS Thermal Accommodation to Next Facility

Installation of Renewable Energy PV System Increase PV power panels

17

Smart Energy Project of TRI� Construct Smart Energy Grid

for TRI Campus

� Maximize renewable energy

usage

� Realize Peak Cut and Demand

Response

� Reduce Electric power

Consumption

� Increase BCP Capability

� Total Management and

Control by User Participation

18

EnergyGeneration

PV PowerPV Power

Micro Combined PowerMicro Combined Power

Micro Co-generationMicro Co-generation

WindmillWindmill

Energy Storage

Large BatteryLarge Battery

EV DischargeEV Discharge

Li-Ion BatteryLi-Ion Battery

Demand ResponseDemand Response

Smart MeterSmart Meter

Energy Storage

Total Grid Management System

ICT + Human

Planning of Smart Energy Grid19

Environmental Experiment

Electro-Magnetic Experiment

Dynamic Experiment

Public Power GridFor Future

Internet

Intranet

Large Redox Flow

Battery System

500kW/3000kWh

Fire ExperimentStructure Experiment

Open Labo 2

Open Labo 1

Techno-Station

Info

Power

Obayashi Road

Construction

Total GMS

Material & ChemicalMicro Combined Power Plant

2 * 200kW + 48kW

ＦＩＮ20