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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Teknosains SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Prosiding Semnastek International Conference on Coastal and Delta Areas R.E.M (Rekyasa Energi Manufaktur) Jurnal Rekayasa Teknologi Jurnal SOLMA Prosiding Seminar Nasional Teknoka SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Bantenese Jurnal Pengabdian Masyarakat Jurnal Teknologi Bahan dan Barang Teknik Jurnal Pengabdian kepada Masyarakat Nusantara (JPkMN) Urecol Journal. Part E: Engineering
Mugisidi, Dan
Univeritas Muhammadiyah Prof. Dr. HAMKA, Jakarta, Indonesia
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Journal : Jurnal Teknosains

 1 
Determination of the convective heat transfer constant (c and n) in a solar still Dan Mugisidi; Abdul Rahman; Oktarina Heriyani; Pancatatva Hesti Gunawan
Jurnal Teknosains Vol 11, No 1 (2021): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.50908

Abstract

The geometry of a solar still determines the convection constants C and n, which in turn affect the convection heat transfer coefficient’s value and mass. A method for determining the value of convection heat transfer constants C and n has already been developed by the researchers. Therefore, this study aimed to use several methods and theories to find the value of convection heat transfer constants C and n. The results are then compared with the results of the study. The solar still used in this study has one slope. To reduce variables that cannot be controlled, the data collection was conducted indoors using a halogen lamp that can be regulated as a heat source for 24 hours nonstop. The sea surface height in the solar still was maintained at a height of 20 mm, using a height regulator. Temperature was measured using a data logger set to enter data every hour. The desalinised clean water was stored in bottles placed on scales that were recorded every one hour. Room temperature was maintained in the range of 35 to 36 oC. The data in this study were used to calculate the heat transfer constants C and n to obtain the value of the convection heat transfer coefficient and mass calculation. This study compares the calculation models of Tiwari, Dunkle and Power. The following calculation model results: Tiwari model, C = 0.082 and n = 0.612; Dunkle model, C = 0.075 and n = 1/3; Power model, C = 0.815 and n = 0.611. The C and n values obtained with these four approaches reveal that the results from the Power model calculation are the closest to the actual mass, showing a percentage deviation of 1.63%.
Efisiensi termal dan efektivitas produksi kondensor pada solar still terpadu Dan Mugisidi; Adittia Fajar; Rifky Rifky; Oktarina Heriyani
Jurnal Teknosains Vol 12, No 1 (2022): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.70731

Abstract

Water is a basic human need that must be fulfilled. The need for clean water is increasing while the availability of clean water is limited, so researchers are trying to use sea water as raw material for fresh water. Sea water is an abundant source of water but still contains salt, therefore it is necessary to separate sea water and its salt content to produce fresh water or desalination, one way is to use solar stil. Solar stills are mostly used for desalination processes on the coast and remote area because they can be operated easily and can be manufactured at low cost. However, solar still has low productivity, so various studies have been carried out to increase desalination yields, such as the addition of a condenser. Aim of this study was to determine the thermal efficiency and effectiveness of the condenser on solar stills. The research was conducted in period March - May 2021. The materials used are aluminum with a length of 300 mm, a width of 300 mm and a thickness of 1.6 mm for the basin plate, double glass with a thickness of 3 mm for the top and sides of the solar still. The study was conducted indoor with radiation intensity using halogen lamps. The variables measured were water temperature, evaporation, inner glass surface, condenser, inlet and outlet of the condenser cooler using a fluke meter, radiation intensity using a solar power meter and desalinated water using a digital balance. From the results of the study, the average thermal efficiency of the condenser in the integrated solar still reached 83.94% and the desalination mass of seawater reached 451.32 grams with the effectiveness of condenser production of 96.4% and the correlation value of 0.99.
Co-Authors Abdul Rahman Abdul Rahman Soleh Pohan Adittia Fajar Agus Fikri Agus Fikri Agus Fikri Ahmad Maulana Yusuf Ahmad Samil Mubarok Atiqah Meutia Hilda Avorizano, Arry Cahyani, Regita Septia Che Wan Mohd Noor Djeli, M Yusuf Estu Sinduningrum Faturahman, Hamdi Fikri, Agus Firmansyah Azharul Hamdi Faturahman Hamdi Faturohman Hangga Putra Prabawa Hilda, Atiqah Meutia Ikbal Prasetiyo Aji Irfan Hilmi Luhung, Rizal Andi Lutfan Zulwaqar M Yusuf Djeli Mohammad Mujirudin Mohammad Yusuf D Mubarok, Ahmad Samil Muhidal Wasi Mujirudin Mujirudin Oktarina Heriyani Oktarina Heriyani Oktarina Heriyani Oktarina Heriyani Oktarina Heriyani Oktarina Heriyani Oktarina Heriyani Oktarina Heriyani Oktarina Heriyani Oktarina Heriyani Oktarina Heriyani Pancatatva Hesti Gunawan Regita Septia Cahyani Rifky Rifky Rifky Rifky Rifky, Rifky Riyan Ariyansah Rizal Andi Luhung Sinduningrum, Estu Sugema Vazri Muharom4 Wahyu Kuncoro Wasi, Muhidal Wilarso, Wilarso Zaka Nurfadilah