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Studi Komputasi dan Analitik Konfigurasi Trombe Wall pada Cuaca Kota Bandung

COMPUTATIONAL AND ANALYTICAL STUDY OF TROMBE WALL CONFIGURATIONS WITHIN BANDUNG WEATHER CONDITION

Undergraduate Theses from JBPTITBPP / 2017-09-27 13:44:16
Oleh : Vidya Aisya (NIM : 13113142), S1 - Department of Mechanical Engineering
Dibuat : 2017-09-27, dengan 1 file

Keyword : Trombe wall, iradiasi matahari, thermal mass, Bandung, CFD, energi, temperatur

Trombe wall merupakan teknologi selubung bangunan yang utamanya digunakan dalam pemanasan dan pendinginan pasif. Performanya sangat dipengaruhi keadaan cuaca seperti iradiasi matahari dan temperatur lingkungan. Panas yang diperoleh pada siang hari dapat disimpan oleh dinding thermal mass untuk kemudian dilepas pada malam hari secara perlahan.

Peninjauan penggunaan Trombe wall pada iklim tropis masih jarang dilakukan akibat adanya potensi panas berlebih pada siang hari. Kota Bandung yang cenderung lebih dingin dari kota lain di Indonesia dipilih sebagai area dilakukannya simulasi CFD dan evaluasi performa termal dari temperatur dan energi masukkan. Konfigurasi berupa variasi ketebalan menjadi parameter desain utama yang kemudian dilihat pengaruhnya terhadap temperatur ruangan.

Hasil simulasi model ruangan Trombe wall secara konsisten memberikan nilai temperatur yang lebih tinggi dibandingkan dinding biasa. Semakin tebal dinding thermal mass, temperatur ruangan semakin turun. Pada hari terpanas, terjadi fenomenena panas berlebih sehingga dilakukan simulasi dengan penambahan sistem vent. Namun, efek penurunan temperaturnya hanya dapat mencapai rata-rata 2,27 °C yang masih lebih panas sekitar 6,30 °C dari temperatur dinding konvensional.

Deskripsi Alternatif :

Trombe wall is a building envelope technology that mainly used for passive heating or cooling. Its performance depends greatly on weather condition such as solar irradiation and outdoor air temperature. The heat collected during daytime could be stored in the thermal mass wall before transmitted gradually later at night.

Assessment of Trombe wall utilization has not been gaining many attention due to potential of overheating occurrence in the afternoon. Bandung City with cooler environment than other cities in Indonesia was chosen as the area to conduct CFD simulation and thermal performance evaluation regarding the temperature and heat gain. Configuration of varied thickness was selected as the primary parameter in which indoor temperatures are being monitored.

Simulation results of Trombe models gave a consistently higher temperature than conventional wall. As the wall got thicker, indoor air temperature decreased. The results also showed the overheating phenomenon on hot days so that a model of vented Trombe wall was simulated as an alternative modification of Trombe wall configuration. Unfortunately, indoor air temperature only decreased as much of 2.27 °C averagely which was still higher than conventional wall model by 6.30 °C on average.

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