Ritsumeikan University in Ibaraki, Osaka has implemented several green energy technologies and design features to reduce CO2 emissions and energy consumption on campus. The main building generates electricity also used by two other buildings. Passive solar designs keep buildings naturally lit and heated. A points-based system encourages students to travel off-campus, and the university's facilities can support the community in emergencies.

1. Assignment: Report from Ritsumeikan University, Ibaraki Campus
Name: Putika Ashfar Khoiri
Student Number: 28J16118
Introduction
Figure 1. Introduction to Ritsumeikan University
In this global era, we have to concern about the energy consumptions in the building. Carbon
dioxide in the atmosphere is rapidly growing up after the industrial revolution. The recent report of
IPCC said that the concentration of carbon dioxide reached 379 ppm. Those trend is increasing every
year. The energy using in the residential house, commercial building and other industrial field have a
great role in releasing CO2 emission. A half of energy is consumed for lighting, computer and others
in the office, and the other half energy is consumed for cooling and heating in building, and the ratio
of energy consumption for transportation of thermal energy by water and air is large.
Figure 2. Ritsumeikan University, Ibaraki Campus (front side)
Ritsumeikan University is a private university located at Ibaraki City, Osaka Prefecture. It is near to
the JR Ibaraki station and AEON Mall Ibaraki. This University was applied green energy technology to
reduce CO2 emission produce inside the campus.

2. Figure 3. Map of Ritsumeikan University (up left), shading at the building (up right)
They used natural gas and sun light to produce the energy in the campus. There are 3 building on
this campus. The main building provides the energy for another 2 building. The facility inside the
campus is mesmerizing, it also has an escalator like a commercial building. Smart lecture system is
applied to reduce energy consumption. Sunlight reflection system to provide natural light. The
building consists of 3 parts; 1) The main building which provide electricity. There are lecture rooms,
office room, gymnasium and restaurants inside. 2)The second building are park and it is a public
building ,3) The third building is a public building and there is still enough space for building
expansion.
1. Energy Saving in Building
Lower cooling and heating load for building design is also considered for energy saving. Energy used
in chiller, fan and pump is huge, so installing high performance equipment and their efficient
operation are very important for energy saving.
Normally, it is thought that natural gas supplied by the city gas company is used as the fire energy
for heating something. But it can be used for space cooling by using fuel energy to gas engine for
compressor to heat pump.
Figure 4. Escalator facility inside the campus (left), prohibition to smoke in campus (right)
They also applied shifting class in the morning and evening. Used classroom are different in the
morning and evening. For example, in the morning the west building is used. The east building
receives the heat energy from the sun light and the converter, convert the heat energy become the
electrical energy using for electricity supply in the university. Natural light also used to supply

3. lighting equipment. The government plan to reduce the energy using up to 25 %. The opposite
condition is applied in the evening the east building is using.
The main building also provides water and electricity for other buildings. They also use the level of
environment indication to capture the condition of its environment from score 1 (uncomfortable) to
6 (comfortable). With green building concept, it supports energy for Ibaraki city about 66000 Mw.
AEON Mall and Ritsumeikan University share the electricity by transmitter. They also provide air
conditioning for heating and cooling system.
Figure 5. Installation of power generation system in Ritsumeikan University. This power generation
supply in need of emergency.
Figure 6. The location of Ritsumeikan University near the AEON Mall
The system of this campus also encourage students to study outside the campus to reduce energy
using. Students will earn points using the application on their smartphones when they go outside the
campus. The converter tools to calculate the points are available inside the campus.

4. Figure 7. Terrace of Ritsumeikan University main building, used for outdoor learning (left), how to
use point exchange machine (right)
Every hour they got 30 yen and the maximum points each day for each students are 100 yen. Except
for the bad weather; thunderstorm day, etc., this points system is not work out. They can use the
points as a shopping payment on AEON Mall, next to their university.
2. Disaster Resistant
It purposes to sustain the environment between the university and the society around. Some
building of this university is a public space which means that everyone can enter those areas. For
example, the Ibaraki field is open to public, we can see peoples do sports and walking around those
areas. This field is also having function in an emergency condition, such as an evacuation site when
the earthquake happen.
Figure 8. Iwakura Park Map as a disaster emergency evacuation area (left), Iwakura Park at the
evening (right)
Electrical connection between AEON Mall and Ritsumeikan University was installed. In emergency
cases, the emergency power generation system inside the AEON Mall and Ritsumeikan will provide
the electricity to the university. The solar panel system also installed. Chilled and heated water are

5. also supplied from the natural gas heat source. Energy power system having large tank supply for
emergency time of disaster and water cut-out
Figure 9. Chiller and heat pump installation to produce heat and cooling system
3. Facilities inside the Campus
Figure 10. The conference room (left), theatre (corner), picture of theatre wall use for reduce sounds
from the music performance (right)
The conference room and the theatre are designed to muffle the resonance sounds around the
space and reduce the echo. The wall is covered by reducer to muffle the sounds and give the
optimum sounds from the audience to the speaker.

6. Figure 11. Side corner of the corridor with book shelf, vending machine and trash box, starbucks
coffee shop inside the campus (bottom-left)
Library facility is very convenience for study place. Books are varying both in Japanese, English or
other languages and in many different major of subjects. It has so many different spaces and the
atmosphere is good for studying. Cafeteria and coffee shop are also available inside the campus.
There are 3 cafeterias and they are varying from the cheapest one to the expensive one. Vending
machine are also available in the several corner of the campus, near the bench.
For the lecturer window, they use Japanese shooji (window/door made by paper, in this case it
made by plastic). In autumn or spring, they use double-skin window. While in summer, natural
ventilation is used to absorb heat. The window of the room setting was design to adapt with the
climate condition. In summer, 2 layers were open to reduce the heat. In fall, only one layer is opened
and on the winter, all layer is closed to prevent the cold enter to the room. The temperature
standard in Japan inside the room for summer is 260
C. Heat collected from the room and energy
input is released at the cooling tower
Figure 12. Two layers’ window setting, for autumn season (left), for summer season (centre), privacy
window setting in each room (right).
Each room exhaust air to the main way. Then the air moves outside by the air tunnel on each
windows