Saturday, April 26, 2014
ABDUL HAKIM
DAYLIGHTING IN ALGERIAN CLASS ROOM
Daylight quality and quantity in Algeria schools shows an urgent condition to ensure visual comfort for students and teachers. Some problems arise due to poor window design and excessive amounts of daylight penetration inside the classrooms as well as non-uniform daylight, which may cause glare and heat gain. This study aimed at choosing an ideal window size and glazing pattern to maximize daylight effectiveness and occupant comfort in Algerian schools. Field measurements of selected classroom were carried out in selected school in Algeria during summer and winter season. The data were analysed and used to develop model design for simulation. Seven patterns of glazing windows design were used for extensive simulation exercise. The results of the investigation from the site measurements show that WWR was more than 40%; the WPI was found to be within the range of 300lux to 500lux and the DF of 4%, which exceed reference value except the southeast orientation 2.98% in morning and 2.29% in the evening. Result from simulation using IES by
comparing three different glazing types (tint, clear and reflective) and using
different glazing size from 25% to 75% in
winter season (under overcast sky condition) and summer season (under
intermediate sky condition). The
evidence from this study suggests that tinted windows in both winter and summer
is ideal as the simulations result shows that significant usable area of
(31.22% - 41.74%) is achievable in a bilateral window opening with a (DF<2 25="" 300lux="" 30="" 500lux.="" 50="" 75="" a="" adequate="" algeria="" and="" as="" be="" bilateral="" by="" configurations="" daylight="" daylighting.="" design="" different="" during="" enhancement="" experiment="" for="" from="" further="" glass="" glazing="" has="" ideal="" impact="" improve="" in="" increasing="" it="" louvers="" need="" of="" overhangs.="" percentage="" public="" quality="" quantity="" range="" research="" result="" school="" schools="" shelves="" significant="" span="" steaming="" suggest="" that="" the="" tinted="" to="" unobtainable="" use="" variations="" vt="" was="" with="" within="" would="" wpi="" wwr="" yield="">
Daylight quality and quantity in
Algeria schools shows an urgent condition to ensure visual comfort for students
and teachers. Some problems arise due
to poor window design and excessive amounts of daylight penetration inside the
classrooms as well as non-uniform daylight, which may cause glare and heat gain. This study aimed at choosing
an ideal window size and glazing pattern to maximize daylight effectiveness and
occupant comfort in Algerian schools. Field measurements of selected
classroom were carried out in selected school in Algeria during summer and
winter season. The data were analysed and used to develop model design for
simulation. Seven patterns of glazing
windows design were used for extensive simulation exercise. The results of the
investigation from the site measurements show that WWR was more than 40%; the
WPI was found to be within the range of 300lux to 500lux and the DF of 4%,
which exceed reference value except the southeast orientation 2.98% in morning
and 2.29% in the evening. Result from simulation using IES by
comparing three different glazing types (tint, clear and reflective) and using
different glazing size from 25% to 75% in
winter season (under overcast sky condition) and summer season (under
intermediate sky condition). The
evidence from this study suggests that tinted windows in both winter and summer
is ideal as the simulations result shows that significant usable area of
(31.22% - 41.74%) is achievable in a bilateral window opening with a (DF<2 25="" 300lux="" 30="" 500lux.="" 50="" 75="" a="" adequate="" algeria="" and="" as="" be="" bilateral="" by="" configurations="" daylight="" daylighting.="" design="" different="" during="" enhancement="" experiment="" for="" from="" further="" glass="" glazing="" has="" ideal="" impact="" improve="" in="" increasing="" it="" louvers="" need="" of="" overhangs.="" percentage="" public="" quality="" quantity="" range="" research="" result="" school="" schools="" shelves="" significant="" span="" steaming="" suggest="" that="" the="" tinted="" to="" unobtainable="" use="" variations="" vt="" was="" with="" within="" would="" wpi="" wwr="" yield="">
Daylight quality and quantity in Algeria schools shows an urgent condition to ensure visual comfort for students and teachers. Some problems arise due to poor window design and excessive amounts of daylight penetration inside the classrooms as well as non-uniform daylight, which may cause glare and heat gain. This study aimed at choosing an ideal window size and glazing pattern to maximize daylight effectiveness and occupant comfort in Algerian schools. Field measurements of selected classroom were carried out in selected school in Algeria during summer and winter season. The data were analysed and used to develop model design for simulation. Seven patterns of glazing windows design were used for extensive simulation exercise. The results of the investigation from the site measurements show that WWR was more than 40%; the WPI was found to be within the range of 300lux to 500lux and the DF of 4%, which exceed reference value except the southeast orientation 2.98% in morning and 2.29% in the evening. Result from simulation using IES
SHAHRUL CHE ONN
GREEN ROOF HEAT TRANSFER IN BUILDING
In dealing with the urban heat island effect in urban
areas, green roof technology has been approved by researchers around the world
as the best solution to date. Apart from its high cost in terms of application,
it really contributes most in mitigating the urban heat island effect in urban
areas. Potted plants seems to be a potential alternative in comparison to green
roof system in contributing to urban heat island mitigation. This paper
describes a method for accessing thermal performance of potted plants in mitigating
urban heat island effect in the urban environment of tropical climate regions.
The dual goals of this study are to emphasize green roof technology and to provide
alternative for green roof system application. Method of investigation for this
project started with an experiment, which included building of four test cells
equipped with data acquisition system that accommodated four different design
variables. The data recorded helped establish the thermal benefits of potted
plants as alternative measure in mitigating urban heat island effect.
Abstract
HANDRINO
GREEN MATERIALS AND CONSTRUCTION IN WEST SUMATRA
Tafsiran Tenaga Terkandung:
Bangunan yang dibina dengan pelbagai bahan-bahan binaan yang menggunakan tenaga di seluruh peringkat pembuatan mereka, penggunaan dan pembinan. Peringkat ini terdiri daripada pengekstrakan bahan mentah, pengangkutan, pembuatan , pemasangan serta pemasangan pembinaan dan penguraian. Miller (2001 ) mendedahkan bahawa , yang dijangka tenaga termaktub telah ditafsirkan dalam pelbagai cara, dan ukuran yang diterbitkan adalah agak tidak jelas. Crowther (1999 ) mendefinisikan tenaga mirip sekali sebagai- jumlah tenaga yang diperlukan dalam penciptaan sebuah bangunan , termasuk tenaga langsung yang digunakan dalam proses pembinaan dan pemasangan , dan tenaga tidak langsung , yang diperlukan untuk mengeluarkan bahan-bahan dan komponen bangunan. Treloar et al.
Tenaga ( 2001b ) menjelaskan, - Tenaga termaktub (EmE) adalah tenaga yang diperlukan untuk menyediakan produk ( secara langsung dan tidak langsung) melalui semua proses, hulu (iaitu boleh dikesan ke belakang daripada produk siap kepada idea tentang bahan-bahan mentah). Begitu juga, definasi yang lebih lengkap , yang disediakan oleh Baird , 1994; Edwards dan Stewart, 1994; Howard dan Roberts, 1995; Lawson , 1996; Cole dan Kernan , 1996 (Seperti yang dipetik dalam Ding, 2004) , mencadangkan bahawa- tenaga termaktub terdiri daripada tenaga yang digunakan semasa pengeluaran dan pemprosesan bahan-bahan mentah, pengangkutan bahan-bahan mentah asal , pembuatan bahan-bahan binaan dan komponen dan penggunaan tenaga untuk pelbagai proses semasa pembinaan dan perobohan bangunan. Definasiini mewakili perbezaan pendapat mengenai sempadan sistem untuk dimasukkan ke dalam analisis tenaga termaktub.
Tafsiran Tenaga Terkandung:
Bangunan yang dibina dengan pelbagai bahan-bahan binaan yang menggunakan tenaga di seluruh peringkat pembuatan mereka, penggunaan dan pembinan. Peringkat ini terdiri daripada pengekstrakan bahan mentah, pengangkutan, pembuatan , pemasangan serta pemasangan pembinaan dan penguraian. Miller (2001 ) mendedahkan bahawa , yang dijangka tenaga termaktub telah ditafsirkan dalam pelbagai cara, dan ukuran yang diterbitkan adalah agak tidak jelas. Crowther (1999 ) mendefinisikan tenaga mirip sekali sebagai- jumlah tenaga yang diperlukan dalam penciptaan sebuah bangunan , termasuk tenaga langsung yang digunakan dalam proses pembinaan dan pemasangan , dan tenaga tidak langsung , yang diperlukan untuk mengeluarkan bahan-bahan dan komponen bangunan. Treloar et al.
Tenaga ( 2001b ) menjelaskan, - Tenaga termaktub (EmE) adalah tenaga yang diperlukan untuk menyediakan produk ( secara langsung dan tidak langsung) melalui semua proses, hulu (iaitu boleh dikesan ke belakang daripada produk siap kepada idea tentang bahan-bahan mentah). Begitu juga, definasi yang lebih lengkap , yang disediakan oleh Baird , 1994; Edwards dan Stewart, 1994; Howard dan Roberts, 1995; Lawson , 1996; Cole dan Kernan , 1996 (Seperti yang dipetik dalam Ding, 2004) , mencadangkan bahawa- tenaga termaktub terdiri daripada tenaga yang digunakan semasa pengeluaran dan pemprosesan bahan-bahan mentah, pengangkutan bahan-bahan mentah asal , pembuatan bahan-bahan binaan dan komponen dan penggunaan tenaga untuk pelbagai proses semasa pembinaan dan perobohan bangunan. Definasiini mewakili perbezaan pendapat mengenai sempadan sistem untuk dimasukkan ke dalam analisis tenaga termaktub.
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