EVALUASI KINERJA SELUBUNG BANGUNAN GEDUNG AGAPE UNIVERSITAS KRISTEN DUTA WACANA YOGYAKARTA
DOI:
https://doi.org/10.26418/lantang.v8i2.45436Keywords:
Selubung Bangunan, OTTV, Konservasi EnergiAbstract
Di tengah fenomena perubahan iklim dan pemanasan global, arsitektur sudah semestinya turut berperan dalam menjaga lingkungan dengan menghadirkan desain-desain bangunan yang memiliki performa tinggi, yang dapat memberikan kenyamanan optimal bagi penghuninya tanpa mengorbankan kualitas lingkungan di sekitarnya. Karakter iklim Indonesia yang merupakan iklim tropis menyebabkan tingginya temperatur lingkungan, sehingga berpotensi menimbulkan ketidaknyamanan bagi penghuni bangunan. Upaya dalam meningkatkan kenyamanan tentu akan membutuhkan konsumsi energi yang tinggi, sehingga perlu dipikirkan strategi konservasi energi agar bangunan tidak berdampak negatif terhadap lingkungan. Sebagai bagian dari kompleks Universitas Kristen Duta Wacana Yogyakarta, Gedung Agape adalah gedung dengan fungsi perkantoran yang menggunakan sistem pendingin udara. Setelah digunakan selama 12 tahun, Gedung ini memiliki evaluasi kenyamanan termal yang cukup baik oleh para penghuninya. Namun demikian, diyakini Gedung Agape masih memiliki potensi penghematan energi yang cukup besar melalui kinerja selubung bangunannya. Studi ini bertujuan untuk mengevaluasi bagaimana kinerja selubung bangunan Gedung Agape UKDW dalam fungsinya mereduksi panas dari lingkungan serta menentukan strategi apa saja yang dapat diterapkan untuk menekan nilai Overall Thermal Transfer Value (OTTV) dalam upaya mendukung konservasi energi pada bangunan. Standar Nasional Indonesia tentang konservasi energi Gedung menetapkan nilai OTTV maksimal sebesar 35 W/m2. Berdasarkan hasil perhitungan dengan worksheet, didapatkan nilai OTTV Gedung Agape sebesar 49,06 35 W/m2, cukup jauh dari standar SNI. Beberapa strategi untuk menekan nilai OTTV dicoba disimulasikan melalui modifikasi material bukaan dan penyesuaian window to wall ratio, sehingga pada akhirnya dapat mencapai 34,86 W/m2.
EVALUATION OF BUILDING ENVELOPE PERFORMANCE ON AGAPE BUILDING UNIVERSITAS KRISTEN DUTA WACANA YOGYAKARTA
In response to the worldwide issue about climate change and global warming, architecture should play a role to protecting the environment by presenting high performance building designs. This kind of building can provide optimal comfort for its occupants without sacrificing the quality of the surrounding environment. The character of Indonesia's tropical climate, causes high environmental temperatures, thus potentially causing discomfort for building occupants. The effort to increase comfort will certainly require high energy consumption, so it is necessary to consider about energy conservation strategies to minimize negative impact on the environment. As a part of Universitas Kristen Duta Wacana area, Agape is an office building that uses air conditioning system. After being used for 12 years, this building has a satisfactory evaluation about the thermal comfort from the occupants. However, it is believed that the building still has considerable potential of energy saving through the performance of the building envelope. This study aims to evaluate performance of Agape Building"™s envelope in term of heat transfer reduction and determine strategies that can be applied to reduce the Overall Thermal Transfer Value (OTTV) value to support energy conservation. Indonesian National Standards (SNI) about building"™s energy conservation determine a maximum OTTV value of 35 W/m2. Based on calculation, the OTTV value of Agape Building was obtained 49,06 W/m2, has not been able to reach the SNI standard. Several strategies to reduce the OTTV value have been simulated by modifying the opening material and adjusting the window to wall ratio, so that in the end the OTTV value could meet the standards, 34,86 W/m2.
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