2011 International Conference on Alternative Energy in Developing Countries and Emerging Economies
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for the human breath. The fresh air will pass the system
to reduce the sensible heat and latent heat before fill into
the building. Inside the building, it has CO
2
sensor to
check the carbon dioxide level and adjusted the fresh air.
Fig. 13. The fresh air management
system.
VI. R
ESULT
The result of the integration technique which applied in
the Government Complex was the high efficiency and
high quality building.
A. The High Efficiency of Energy Conservation Building
From the designed integration, this building has OTTV
about 10.8 W/m
2
, lower than the code about 4.2 times,
RTTV about 3.2 W/m
2
, lower than the code about 7.2
times, and lighting used about 6-8 W/m
2
.
Fig. 14. The flow and evaporation of the water in the pond.
This building has average of the heat transfer through
the building envelope about 0.163 Btu/h.ft
2
F. If compare
to the conventional building in Thailand, which has the
heat transfer through the building envelope about 2.157
Btu/h.ft
2
F, this building will reduce the cooling load
demand from the building envelope about 13 times.
B. The Reducing of the Cooling Load Demand
F
rom the designed integration, the micro-climate
modification, and the increasing of the building envelope
made this building needs cooling load less than
conventional building about 20 times. And the reducing
of the building envelope area made this building has the
S/A ration about 1.7, which made the heat transfer
through the building envelope less than conventional
building about 2 times.
For this reason, the Government Complex can reduce
the cooling load demand to 5,000 refrigerant ton or 120
m
2
per refrigerant ton, lower than the conventional
building which demand around 15
–
24 m
2
per refrigerant
ton about 5
–
8 times.
C. The Reducing of the Electricity Demand
From the reducing of the cooling load demand and the
designed integration, the Government Complex has the
electricity demand about 60 kWh/m
2
/year, lower than the
conventional building that has the electricity demand
about 280 kWh/m
2
/year, or different about 4.7 times.
This electricity demand made this project need 35 MW
for the sub-station, and the on-site electricity production
about 9.4 MW made this project need the electricity from
the MEA only 25.6 MW.
D. The Reducing of the Heat Rejection
From the using of the pond like the cooling tower
made the Government Complex does not need the
cooling tower, it causes to reduce the heat rejection from
the cooling tower. The heat rejection from the air
condition and the water evaporation from the pond
cooling were same as other pond.
E. The Reducing of the CO
2
Emission
The CO
2
emission from the electricity generation in
Thailand is 0.45 kgCO
2
/kWh, it made the Government
Complex has the CO
2
emission about 27kgCO
2
/m
2
/year
[5] . When this project used the CCP system that has
the CO2 emission about 0.19 kgCO
2
/kWh [6], it made
this project has the CO
2
emission about
23.5kgCO
2
/m
2
/year. For the future, when this project will
use the solar power that was prepared, the CO
2
emission
will reduce to 19kgCO
2
/m
2
/year.
VII. C
ONCLUSION
From the integration technique that applied in the
Government Complex can reduce more cooling load
demand and electricity demand as in the result. It made
this project can reduce the construction cost in the air
condition system and the sub-station.
The cooling load reduce from 40,000 refrigerant ton in
the conventional designed to 5,000 refrigerant ton in the
integration designed. The cost of air condition system in
Thailand was about 60,000 baht per refrigerant ton. The
construction cost in the air condition system for the
conventional building was about
2,400 million baht or
4,000 baht/m
2
, but the construction cost in the air
condition system in this project was about 300 million
baht or 500 baht/m
2
. This can reduce the construction
cost in the air condition system about 2,100 million baht.
The electricity demand was reduce from the integration
technique. In the conventional project in Thailand may
need the electricity substation about 65MW, but the
Government Complex need only 35 MW. This cause to
reduce the construction cost of the sub-station about 150
million baht.
In the final, this project can reduce the demand on the
