Page 41 - 健康與建築第三卷二期

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. . 研
屋頂隔熱改善之節能及室內熱舒適度模擬探討 32 究
論

文
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Energy Saving and Indoor Thermal Comfortable Simulation

for Roof Insulation Improvement

Chen, Chi-Ren1* Hsu, Min-Han2

1Associate Research Fellow, Architecture and Building Research Institute, Ministry of the Interior, Taiwan (R.O.C)

2R&D Substitute Services, Architecture and Building Research Institute, Ministry of the Interior, Taiwan (R.O.C)

Abstract

Background: Taiwan has been energy shortage for long time, according to the National Energy Conference
2014 latest data show that 98 percent of energy per year are still dependent on import in Taiwan, on the view

of energy consumption composition of various departments of the country, it can be found that in residen-

tial and commercial sector account for about 23% of the energy consumed on the building every year, it ac-
counted for about a quarter of energy consumption, these buildings have high power consumption and do

not match the ecological environment universally. If begin to improve the energy consumption for the whole

buildings of Taiwan, it can save energy and reduce greenhouse gas emissions, there will be a great contribu-

tion.

Purposes: It will establish the simple reckoning mode of energy saving ef ciency on the building’s roof in-

sulation improving, analyze the relevance between energy-ef ciency and thermal comfort of the indoor en-
vironment, and analyze what improving method is better for improve effectiveness.

Methods: It will use EnergyPlus to simulate the air conditioning power consumption and the thermal com-
fort of the indoor environment with the index of PMV and PPD, which according to different types of roof

insulation which using different U values of roof (or use green roof), climatic parameters etc.

Results: For example with on the top oor of buildins in Taipei , when the roof U-value improved from the

original level of 2.5 to 0.8 with standards compliant, the air-conditioning energy-saving rate is about 4.65%,

the total energy saving rate is about 2.0%, the PPD drop of about 4.2%, it has improving signi cantly on
energy ef ciency and indoor heat environmental comfort. If on the view of regional, the degree of improve-

ment in simulation is Taichung> Kaohsiung> Taipei.
J
our
Conclusions/Implications for Practice: It had propose the simple estimating energy savings mode for roof nal
of
insulation improving of buildings. And further analysis the air conditioning power consumption and the He
alt
thermal comfort of the indoor environment by using different U values of roof (or use green roof), climatic h a
nd
parameters etc in Taipei, Taichung, Kaohsiung etc three regions respectively. It can be the reference on as- Arc
sessing the bene ts before roof insulation improving of buildings.
hit
ect
ure

Keywords: roof insulation, green roof, building energy saving, indoor thermal comfort, PMV, PPD.
V
olu
me
Accepted for publication: March 11, 2016
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N
Corresponding author : Chen, Chi-Ren
um
Address : 13F, No. 200, Sec. 3, Beisin Rd., Sindian District, New Taipei City 23143, Taiwan (R. O. C.) ber
2
Tel : 0910121018
Ju
E-mail : chiren@abri.gov.tw
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