Pengaruh Perbedaan Ketebalan Irisan Asam Gelugur (Garcinia atroviridis) Terhadap Kandungan Total Asam Pada Asam Sitrat Dengan Pengeringan Sinar Matahari Sistim Konveksi Paksa
Keywords:
Dimensions, Citric Acid, Drying, Heta Transfer Convection
Abstract
The mechanism of the drying process is the process of heat transfer and mass transfer that takes place simultaneously. The pressure of the water vapor in the acid gelugur is higher than that on the surface interface of the gums and air acids. Intensity solar radiation averages around 300-590w / m2 and Ambient Temperature 28,830C. The hot air condition in the drying box averages 320C. The content of total citric acid gelugur acid was 1.2787% with 3mm slice thickness and 1.3981% with a 5mm slice thickness. Drying is done from 08.00-17.00 am with a hot air flow rate of 1.5m/s.
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[4] R. D. Mattes and L. Bormann, “Effects of (−)-hydroxycitric acid on appetitive variables,” Physiol. Behav., vol. 71, no. 1–2, pp. 87–94, 2000.
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[7] M. B. Sibuea and M. Thamrin, “Analisis Usahatani Dan Pemasaran Asam Gelugur Di Kabupaten Deli Serdang,”AGRIUM J. Ilmu Pertan., vol. 17, no. 3, 2015.
[8] A. A. Amran, Z. Zaiton, O. Faizah, and M. Paden, “Effect of Garcinia atroviridis on oxidative stress and atherosclerotic changes in experimental guinea pigs.,” Am. J. Pharmacol. Toxicol., vol. 5, no. 2, pp. 65–70, 2010.
[9] S. F. Dina, H. Ambarita, F. H. Napitupulu, and H. Kawai, “Study on effectiveness of continuous solar dryer integrated with desiccant thermal storage for drying cocoa beans,” Case Stud. Therm. Eng., vol. 5, pp. 32–40, 2015.
[10] S. Vendan, L. P. A. Shunmuganathan, T. Manojkumar, and C. S. Thanu, “Study on design of an evacuated tube solar collector for high temperature steam generation,” Int J Emerg Tach Adv Eng, vol. 2, 2012.
[11] P. Siagian, E. Y. Setyawan, T. Gultom, F. H. Napitupulu, and H. Ambarita, “A field survey on coffee beans drying methods of Indonesian small holder farmers,” in IOP Conference Series: Materials Science and Engineering, 2017, vol. 237, no. 1, p. 12037.
[12] P. Siagian, “Pengeringan Asam Gelugur Secara Hibryd Dengan Kolektor Surya Dan Potovoltaik Pada Temperatur Konstan,” 2019.
[13] M. Van Belleghem, M. Steeman, A. Willockx, A. Janssens, and M. De Paepe, “Benchmark experiments for moisture transfer modelling in air and porous materials,” Build. Environ., vol. 46, no. 4, pp. 884–898, 2011.
Published
2019-08-09
How to Cite
Siagian, P., Gultom, T., Ginting, S., Manurung, H., & Setyawan, E. (2019). Pengaruh Perbedaan Ketebalan Irisan Asam Gelugur (Garcinia atroviridis) Terhadap Kandungan Total Asam Pada Asam Sitrat Dengan Pengeringan Sinar Matahari Sistim Konveksi Paksa. SPROCKET JOURNAL OF MECHANICAL ENGINEERING, 1(1), 44-54. https://doi.org/https://doi.org/10.36655/sproket.v1i1.38
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