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Ridwan, Kiagus Ahmad
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Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

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PROTOTYPE DRYER SOLAR IN TERMS OF USAGE DUAL COLLECTOR THERMAL AND SYSTEM PHOTOVOLTAIC Ridwan, Kiagus Ahmad
KINETIKA Vol. 9 No. 1 (2018): KINETIKA 01032018
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Direct drying method is still widely used by the general public and home industry, in the application of this type of method has several disadvantages such as susceptible to dust or pollution so that the resulting product is not hygienic and the drying time up to days is also a shortage of direct drying. Based on the problems faced, an innovation is carried out in the process of drying environmentally friendly food by using thermal collectors and solar panels as a result of renewable energy development. From the results of the study it can be seen that the length of drying time affects the energy produced by the dual collector thermal to the mass of vaporized H2O and the resulting heat loss. In the research carried out, mass H2O was highest evaporated in the 240th minute of 0,1998 grams and the highest amount of heat loss in the 300th minute was 1604,38 kJ with the energy produced by the dual collector thermal was 4221,0498 kJ, whereas in the study with the use of photovoltaic systems the highest amount of heat loss produced in the 120th minute is 570,389 kJ and the highest electrical power generated at 12:00 WIB with a slope of 300 angle of 10,25 watts.
KAJIAN RANCANG BANGUN SOLAR WATER HEATER (SWH) ANALISIS TERHADAP KOEFISIEN LAJU KONVEKSI DAN EFISIENSI PEMANASAN AIR Ridwan, Kiagus Ahmad
KINETIKA Vol. 10 No. 3 (2019): KINETIKA 01112019
Publisher : Politeknik Negeri Sriwijaya

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We know that, solar energy can be used as an alternative source. One of them is by converting solar energy into heat energy using solar collectors, which are called solar water heaters. In this study a solar radiation heat absorbent device was used to heat water using copper pipes and aluminum pipes. This study aims to obtain the need for pipe length, find out the heat used to heat water, and analyze the effect of radiation intensity on the heating efficiency of the water produced. This water heater is made through several preparation stages such as literature study, consultation with mentors, tool making, and also final analysis and reporting. With a pipe length of 5 meters and a diameter of 0,5 inch, with the provisions of batch flow at intervals of every 10 minutes, the results of the research shows that the value of useful energy for heating the largest water occurs in the copper pipe is 32,65Btu and an energy loss of 80,33Btu. It can be seen that the greater the intensity of solar radiation, the greater the rate of convection, useful energy, and the efficiency of water heating. With the largest convection rate (h) in aluminum pipes that is 750,4w/m2oc at radiation intensity of 895w/m2 and efficiency of 40,52%. While the largest convection rate (h) in copper pipes is 818,6w/m2oc at a radiation intensity of 889,7w m2 and efficiency of 54,93%
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