Estimasi Indeks Clear-Sky Global Solar Radiation Menggunakan Model Hottel dan Liu-Jordan di Jatinangor, Sumedang
Keywords:
Clear-sky global solar radiation, model Hottel, model Liu-Jordan, energi surya.Abstract
Energi surya dapat berkontribusi untuk memperoleh solusi pada permasalahan pertumbuhan permintaan energi yang pesat. Oleh karena itu, asesmen untuk penilaian potensi energi surya di lokasi tertentu sangat diperlukan. Penelitian ini berfokus pada pengestimasian indeks radiasi global di bawah kondisi langit cerah (clear-sky global radiation index/CSGSR) di Kecamatan Jatinangor (-6,937o, 107,781o), Kabupaten Sumedang guna memberikan kontribusi terhadap pemahaman distribusi radiasi matahari di wilayah tersebut, sehingga dapat mengoptimalkan pemanfaatan energi matahari. Penelitian ini melibatkan penghitungan transmitansi atmosferik untuk radiasi langsung dan terdifusi menggunakan pemodelan Hottel dan Liu-Jordan. Penelitian ini menunjukkan bahwa terdapat dua nilai maksimal pada pola CSGSR tiap tahunnya, yakni pada 24 Februari (979,51 W/m2) dan 18 Oktober (969,58 W/m2), yang mengindikasikan ketersediaan energi surya yang maksimal. Selain iu, terdapat pula satu titik terendah yang terjadi pada 21 Juni (774,34 W/m2) akibat titik balik musim panas.
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