., Henni (2018) Konfigurasi Desain Selubung Bangunan Pendidikan dengan Sistem Penghawaan Hibrida di Iklim Tropis Lembab. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Perubahan penerapan sistem penghawaan alami menjadi mekanis (AC) pada bangunan pendidikan, mendorong peningkatan konsumsi energi. Penerapan sistem penghawaan hibrida yang mengkombinasikan penghawaan alami dan AC merupakan usulan solusi memenuhi kenyamanan termal sekaligus efisiensi energi. Penelitian ini bertujuan mengidentifikasi pengaruh desain selubung bangunan serta mengelaborasi faktor desain yang mempengaruhi kinerja termal dan energi pendinginan bangunan pendidikan saat moda pasif dan aktif, guna mengindikasi potensi penerapan sistem penghawaan hibrida. Penelitian ini juga bertujuan mendapatkan konfigurasi selubung bangunan pendidikan berpenghawaan hibrida yang menghasilkan kinerja termal yang baik serta efisien terhadap energi pendinginan.
Paradigma penelitian ini adalah kuantitatif positivisme dengan strategi eksperimen menggunakan simulasi. Software yang digunakan adalah DesignBuilder 5.0. Variabel desain selubung bangunan adalah aspek rasio, luas jendela, dan orientasi. Pengaruh desain selubung bangunan dianalisis terhadap kebutuhan energi pendinginan saat moda aktif dan presentase waktu tidak nyaman sesuai rekomendasi ASHRAE 55-2004 (discomfort hour) saat moda pasif. Tahap terakhir adalah optimasi.
Pengaruh aspek rasio terhadap kinerja termal dan energi tidak sesignifikan luas jendela dan orientasi. Peningkatan luas jendela meningkatkan energi pendinginan dan menurunkan discomfort hour pada model dengan orientasi Timur-Barat. Sebaliknya, peningkatan luas jendela meningkatkan discomfort hour pada model dengan orientasi Utara-Selatan. Hal ini disebabkan panas yang dilepas melalui penghawaan pada orientasi Timur-Barat lebuh besar dari Utara-Selatan, karena arah angin terbanyak di Surabaya adalah Timur-Barat. Bangunan dengan sisi terpanjang menghadap Timur-Barat lebih sesuai untuk menerapkan sistem penghawaan hibrida di iklim tropis lembab. Perbaikan kinerja termal dan energi pendinginan masing-masing 4,3% dan 9,3% terhadap base case didapatkan pada model dengan aspek rasio 4, luas jendela 60,5 m2 (WWR 31,5%), dan orientasi Timur-Barat.
=================Changes from natural ventilation to mechanical ventilation (AC) on educational buildings will increase energy consumption. The proposed solution is applying hybrid ventilation system, which combine natural and mechanical system (AC) to improve indoor thermal environment and reduce cooling energy demand. This study aims to identify the effect of envelope building design and elaborate design factor on building thermal performance and cooling energy in passive and active mode, to indicate the potency to apply hybrid ventilation. This study also aims to find the optimum envelope configuration of educational building with hybrid ventilation in tropical climate, which have good thermal performance and cooling energy efficient.
The research paradigm used in this study is quantitative (postivism) and experiment using simulation as the strategy. Simulation was performed using DesignBuilder 5.0. Envelope design variable are building aspect ratio, window size, and building orientation. The effect of envelope design on cooling energy demand (active mode) and discomfort hour based on ASHRAE 55-2004 recommendation (passive mode) is analyzed. The last step was optimization to find the optimum design configuration of educational building with hybrid ventilation in tropical climate.
The effect of building aspect ratio on thermal and energy performance is not as significant as window size and building orientation. Increase of window size is increasing cooling energy and decreasing discomfort hour for East-West oriented building. On the other hand, increase of window size is increasing discomfort hour for North-South oriented building. The reason is more heat losses through ventilation on East-West oriented buildings than North-South oriented building. East and West are the most frequent wind direction in Surabaya. Building elongated from North to South is more appropriate to use hybrid ventilation in Surabaya context. The most optimum configuration is East-West oriented building with aspect ratio 4 and window size 60,5 m2 (WWR 31,5%). Thermal and cooling energy performance was improved 4,3% and 9,3% than base case.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | bangunan pendidikan, discomfort hour, energi pendinginan, penghawaan hibrida, educational building, discomfort hour, cooling energy, hybrid ventilation |
| Subjects: | N Fine Arts > NA Architecture > NA6600 Education buildings |
| Divisions: | Faculty of Architecture, Design, and Planning > Architecture > 23101-(S2) Master Thesis |
| Depositing User: | Henni |
| Date Deposited: | 21 Nov 2018 03:44 |
| Last Modified: | 21 Apr 2021 07:42 |
| URI: | http://repository.its.ac.id/id/eprint/52986 |
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