Pengaruh Posisi Shading Terhadap Kenyamanan Thermal Bangunan Komersial Melalui Retrofitting Energi

Prasetya, Hamzah Zulfan (2023) Pengaruh Posisi Shading Terhadap Kenyamanan Thermal Bangunan Komersial Melalui Retrofitting Energi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sektor bangunan di Surabaya merupakan target program efisiensi energi yang penting karena kontribusinya yang besar dalam konsumsi energi. Bangunan komerisal dengan aktivitas penghuni yang aktif sering dijumpai memiliki banyak kaca untuk penerangan alami namun juga meningkatkan temperatur ruangan dan beban pendinginan, sehingga sangat penting untuk menciptakan kenyamanan termal pada bangunan tersebut. Berdasarkan survei yang dilakukan, penggunaan energi untuk pengkondisi udara memiliki tingkat konsumsi yang besar hingga 62%. Untuk merancang kenyamanan termal dan mengurangi konsumsi listrik, perlu dilakukan retrofitting pada bangunan, terutama untuk bangunan komersial. Pada penelitian ini, retrofitting dilakukan dengan menerapkan shading pada sisi luar kaca bangunan yang diharapkan dapat
mengurangi solar heat gain sehingga mampu mengurangi perpindahan panas yang terjadi pada selubung kaca. Penelitian ini menggunakan 2 posisi shading, yaitu horizontal dan vertikal, dengan masing-masing posisi memiliki variasi sudut bukaan sebesar 0°, 30°, dan 45° dan lebar shading sebesar 20% dan 60% dari tinggi kaca. Penelitian ini menggunakan metode Computational Fluid Dynamics. Setelah melakukan simulasi, didapatkan hasil bahwa
penerapan shading horizontal dengan lebar 60% dari tinggi kaca dan sudut bukaan sebesar 45° mampu menurunkan temperatur sebesar 2.5278°C. Selanjutnya, dilakukan analisis cost-benefit untuk mencari selisih konsumsi listrik sebelum dan setelah retrofitting. Dari analisis tersebut,
didapat penghematan konsumsi listrik pada penerapan shading sebesar 7619.9 kWh sehingga tercapai penghematan biaya konsumsi listrik dengan skenario terbaik sebesar p15,586,068
dan skenario terburuk sebesar Rp10,390,712 dengan masing-masing payback period sebesar 1.57 dan 2.52. ====================================================================================================================================
The building sector in Surabaya is an important target for energy efficiency programs due to its large contribution to energy consumption. Commercial buildings with active occupants are often found to have a lot of glass for natural lighting but also increase the room temperature and cooling load, so it is very important to create thermal comfort in the building. Based on a survey conducted, energy use for air conditioning has a large consumption rate of up to 62%.
To design thermal comfort and reduce electricity consumption, it is necessary to retrofit the building, especially for commercial buildings. In this study, retrofitting is done by applying shading on the outer side of the building glass which is expected to reduce solar heat gain so as to reduce the heat transfer that occurs in the glass envelope. This research uses 2 shading positions, namely horizontal and vertical, with each position having a certain opening angle and width variation. This research uses the Computational Fluid Dynamics method with the help of CFD software as a simulation tool, with variations of shading opening angles at 0°, 30°, and 45°, and shading widths of 20% and 60% of the window glass height. After conducting the simulation, it was found that the application of horizontal shading with a width of 60% of the glass height and an opening angle of 45° was able to reduce the temperature by 2.5278°C.
Furthermore, a cost-benefit analysis was conducted to find the difference in electricity consumption before and after retrofitting. From the analysis, it was found that the electricity consumption savings in the application of shading amounted to 7619.9 kWh, resulting in the best-case cost savings of Rp15,586,068 and the worst-case cost savings of Rp10,390,712, with payback periods of 1.57 and 2.52, respectively.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Retrofitting, Shading, Temperatur, Konsumsi Listrik, Temperature, Electricity Consumption
Subjects:	T Technology > TH Building construction > TH437 Building--Cost control. T Technology > TH Building construction > TH880 Sustainable buildings. Sustainable construction. Green building
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Prasetya Hamzah Zulfan
Date Deposited:	28 Jul 2023 15:49
Last Modified:	28 Jul 2023 15:49
URI:	http://repository.its.ac.id/id/eprint/99681

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