The aim of this experiment was to study the effect of iron sand in a single solar still. The study was conducted on an open floor at the Faculty of Engineering, Muhammadiyah University Prof. DR HAMKA in Jakarta, Indonesia between August – September 2018 using two solar stills made of 2 mm stainless steel (420 mm x 305 mm) covered with 3 mm glass with a slope of 30 degrees. Iron sand was taken from Glagah beach, Kulonprogo in Yogyakarta, Indonesia. One solar still contained 20 mm height of iron sand with 15 mm height of water, while the other one contained 20 mm of water without iron sand and was used as a control. The experiment results showed that the efficiency of solar still containing iron sand was 1.5% higher than the control.
Penelitian ini bertujuan untuk mengetahui pengaruh koefisien kehilangan panas keseluruhan terhadap hasil output yang terjadi pada solar still. Penelitian ini menggunakan material stainless still tebal 1,6 mm dan kaca penutup tebal 3mm dengan kemiringan terhadap alat solar still 30 ̊. Pengujian dilakukan mulai pukul 08.00 WIB sampai 17.00 WIB selama 3 hari, dengan beberapa parameter yang di ukur seperti suhu kaca bawah (Tgi), suhu air (Tw), kecepatan angin (v), intensitas radiasi matahari (I(t)s) yang terdapat dalam sistem alat solar still. Dari hasil pengujian yang dilakukan overall heat loss coefficient tertinggi yaitu sebesar 50,7 W/m2.K.. Semakin tinggi coefficient top heat loss sangat mempengaruhi coefficient heat loss overall sehingga hasil output tidak mengalami kenaikan.
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