IKAGA Lab. KEIO

Research

Flowchart

②Building Scale

1

Research on buildings to improve energy saving performance and

to reduce environmental load by measuring surveys and field surveys

Evaluation of buildings in terms of energy

saving and health performance by

simulations and statistic analysis.

Understanding indoor environment states

and current lifestyles by measuring and

questionnaire surveys.

Simulation

Statistic Analysis

Renovation for

Energy Saving

Life Cycle

Carbon Minus

House

School

Construction

IKAGA Lab. KEIO

Comprehensive Assessment of School Environment

2

Background

Purpose

Suggestion of the effective and efficient improving school environment

Concerns about effects of school environment on students

1． Elucidate the effect of various school spaces on students’.

2． Proposal of an assessment system based on ‘CASBEE-school’

Comprehensive assessment of school environmental efficiency

considering students' health and learning performance

GymnasiumLibrary

ClassroomToilet

Schoolground

Corridor

HealthLearning

PerformanceB

uild

En

vir

on

me

nt

Qu

alit

yBuild Environment Load

IKAGA Lab. KEIO

Field Survey on Child’s Physical Activity in Elementary School

3

Background Decline of child’s physical ability and bipolarization of exercise habit

PurposeTo clarify the relationship between school environment

and child’s physical activity

Improvement of school environment in regard to child’s physical activity

Physical Activity of children

（**：p<0.05, *：p<0.10）

Number of days of playing outside during intermission

0.0

1.0

2.0

3.0

4.0

5.0

~1day

(n=10)

2,3

days

(n=10)

4,5

days

(n=16)

6,7

days

(n=18)

8,9

days

(n=7)

more than

10days

(n=6)

Number of days playing outside

during the survey(16days )

**

**

***

Activity a

moun

t[E

x]

School FacilitiesSchool yard area,

Class room arrangement

Program of School

Width of school yard,

Brightness, Dustiness

Satisfaction for Facilities

School Environment

Objective indicator Activity amount

Walking steps

How to spend intermission

Frequency of playing outside

Original programs to encourage

physical activity

IKAGA Lab. KEIO

Study on the Regionally Energy Use

Background

Objective Cost – Benefit assessment of “Smart Energy Network”

taking business continuity into account in case of emergency

Visualizing each benefit will give support to promote installing SEN

◆Cost – Benefit Assessment Result of installing “Smart Energy Network”

To install “Smart Energy Network” is highly required as a disaster countermeasures

0

1

2

3

Initial cost(obtained by dividing installation cost

by durable years (15))

Maintenance cost

Utility expenses’ reduction

Benefit of possibility of business continuity in case of emergency

Cost Benefit

Total cost0.16

Calm

ative C

ost

or

Benefit

(billion y

en /

year)

B/C= 0.90[-]

B/C= 1.4[-]

Total benefit0.23

* Smart Energy Network：Optimum energy system of a regional basis based on “Local production for local consumption” of heat and electricity 4

IKAGA Lab. KEIO

Improvement of Resilience Performance by Introducing a Smart Energy Network

5

Background

・Quantification of business continuity performance

・Estimation of improvement of resilience performance by introducing

a Smart Energy Network (SEN)

The promotion of a Community Energy System with the supply disruptions of energy

Estimation of improvement of resilience performance by introducing a Smart Energy Network

Conducted a questionnaire survey Case Study

Minato-ku,Tamachi surrounding area

⇒Quantification of business continuity performance

Purpose

In the entire district

110 million yen a year

Effect of loss avoidance by introducing SEN

IKAGA Lab. KEIO

－3.24 [t-CO2]

Study for the net zero energy house realization(1/2)

6

-100

0

100

200

300

400

500

600

Accu

mu

lation

CO

2d

isch

arg

e

(LC

CO

2)

[t-C

O2/h

ou

se]

Achievement of LCCM

◆ Result of LCCO2 estimation

Case

General

house

(old-energy

saving

standard)

Keio Co-Evolving house

Additional-

measures

・natural material

・insulation reinforcementSolar heat utilization

system

Control system introductionSolar panel

(3.5kW)

◆Result of temperature simulation

Indoor temperature 28℃＋ The ventilation

⇒Reduce the risk of heat stroke

Realization of energy-saving and comfortable net zero energy house

26 32[℃]28 30

Disposal

Energy using

Reform

New construction

IKAGA Lab. KEIO 7

▲Simulation

▼Crowded with visitors

▲Field Validation

▲Wind Velocity Measurement

▲The study is continued

▼Wooden Interior

Study for the net zero energy house realization(2/2)