Pure coconut oil or Virgin coconut oil is a modification of making coconut oil to produce products with the lower water and acid level , clear and has a long shelf life of 12 months. In terms of economics, pure coconut oil has higher selling price compared to traditional coconut oil by heating coconut milk or precipitating coconut milk in a long time so as to produce rancid odor and poor quality due to high water content and free fatty acid. The purpose of this study was to obtain pure coconut oil with lower water content and free fatty acids according to SNI. There are 3 methods of making pure coconut oil that is method of fermentation, induction and heating, while the method was used in this research is the method of heating. Heating method which is tested by gradual heating or once heating, for gradual warming done preheat with temperature 60-110 ° C with 9 hours of drying and heating time with 60 ° C temperature variations (sample A), 70 ° C (sample B), 80 ° (sample C) and 5 hours, 4 hour and 3 hour drying time. The results showed that drying air temperature had an effect on product quality and length of drying time. The results of the calculation and testing showed the most effective treatment that is on the sample A with water content and free fatty acid content of the lowest reached 0.08% and 0.10%.
Sistem drainase yang tidak baik merupakan salah satu permasalahan yang sering terjadi di beberapa daerah di kawasan Aceh besar yang merupakan areal pertanian. Berbagai macam usaha telah dilakukan oleh para petani diantaranya dengan mengalirkan air dari sumur dengan menggunakan pompa listrik. Keadaan ini membuat para petani harus mengeluarkan biaya tambahan untuk membuat instalasi listrik untuk menggerakkan pompa air dimana diperlukan kabel listrik yang panjang agar pompa dapat teraliri arus listrik. Untuk mengatasi permasalahan ini maka perlu dilakukan analisa potensi energi angin sebagai sumber energi listrik pada sistem pengairan di daerah pertanian Aceh Besar, terutama di desa Blang Krueng. Tujuan dari penelitian ini adalah untuk menganalisis sumber energi angin sebagai sumber listrik untuk menggerakkan pompa pada sistem drainase pertanian di Desa Blang Krueng Kabupaten Aceh Besar. Luas lahan pertanian yang menjadi analisis dalam penelitian ini adalah ± 0,5 Hektar. Metode pengambilan data penelitian ini dilakukan dengan mengukur kecepatan angin dan analisa kebutuhan daya yang diperlukan untuk menggerakkan pompa. Dari hasil analisa diketahui bahwa kecepatan angin rata-rata pada Bulan April, Mei dan Juni 2019 berturut-turut adalah 2,93 m/s, 3,12 m/s dan 2,91 m/s dengan rata-rata selama tiga bulan 2,98 m/s. Nilai kecepatan ini dapat dikatagorikan untuk penggunaan turbin angin kecepatan rendah (low speed wind turbine).
Saat musim panen kopi banyak petani di Aceh khususnya yang menjual kopi yang masih berwarna merah. Hal tersebut terjadi karena lamanya proses pengeringan. Pengeringan secara alami di bawah sinar matahari membutuhkan waktu yang sangat lama dan higienis produk juga menjadi kendala karena biasaya penjemuran dilakukan di lahan terbuka. Dengan menggunakan perpindahan panas secara alamiah maka waktu yang dibutuhkan utuk proses pengeringan biji kopi berkisar antara 12-20 jam. Penelitian ini memaparkan kolektor surya sebagai alat alternatif pengeringan biji kopi sehingga produk biji kopi yang dihasilkan lebih higienis tanpa terpapar baik oleh kotoran maupun bakteri serta proses pengeringan yang tidak terlalu lama sehingga kualitas biji kopi pun diharapkan akan meningkat. Metode yang digunakan dalam penelitian ini adalah dengan menganalisis kemampuan penyerapan panas absorber yang menggunakan material alumunium yang sebelumnya telah dicat dengan warna hitam serta penggunaan blower udara. Data temperatur dalam ruang pengering diambil dalam waktu interval 30 menit. Pengukuran massa biji kopi diukur setiap 1 jam dengan menggunakan timbangan digital. Begitu pula dengan laju penurunan massa dari biji kopi dan penurunan kadar air yang juga diukur setiap 1 jam. Dari hasil penelitian dapat dilihat bahwa penggunaan blower dengan kecepatan hembusan udara 3,65 m/s dengan temperatur rata-rata 56 ℃ dapat mengurangi kadar air sebanyak 25,5 %. Untuk kecepatan udara 4,55 m/s dengan temperatur rata-rata 54,2 ℃ maka kadar air yang berkurang sebanyak 24,52 %, sedangkan untuk kecepatan 4,95 m/s dengan temperatur rata-rata 52,7 ℃ maka kadar air yang berkurang sebanyak 21,78 % dalam waktu 4 jam.
Anchovies are a group of pelagic fish that inhabit coastal waters and have a very wide distribution. In Indonesia, this species of fish are also preserved through the drying process. The humidity of the drying room must meet the humidity requirements required for drying of 55 - 60%. The natural drying process takes 8 hours of drying time per day for 3 days in areas with high sunshine intensity. Drying work must be accompanied by turning 2-3 times every day. The fish drying technology that has been completed is capable of drying fish for one hour with a capacity of 15 kilograms, and requires a supply of electricity of 3065.5 watts from the state electricity company. The high consumption of electric power required will affect the value of the production costs required so that it is necessary for this analysis to obtain an initial model of the location, type, number of turbines - solar panels, and batteries used to operate the fish dryer. The estimation result of the average daily electric power generated from wind speed is 389,53 watts hour (Wh) and solar energy is 5,79 watt hour. The total potential of electric power generated on period August - September 2020 is 2,31 kilo-watt hour (kWh).
The environmental temperature has increased significantly reaching 33oC as felt by the community, one of which is in the Aceh region which triggers Global Warming. As a result of the increase in temperature in the Aceh area, many buildings and houses become uncomfortable especially during the daytime because most house with zinc roof. This will cause the temperature in the house and the air around it to increase. Therefore, it is necessary to do research on the study of heat absorption on colored zinc roofs. This research method is to calculate the heat absorption (sun intensity) in zinc that has been coated with several kinds of colors such as white, red, blue, yellow and black. The purpose of this study was to determine the color that has the least amount of heat absorption to the sun's intensity. The highest room temperature on zinc-coated black is 49.2° C and the lowest is in white. 40.9°C from the pen. In the environmental temperature observation, there is the highest temperature at 12.00. Room temperature increased the highest temperature at 12.00 on black zinc. The distribution of room temperature can be averaged with a yellow color of 46.0°C, a black color of 49.2°C, a blue of 45.5°C and a white zinc of 40.9 oC. The heat absorbed in the room is 47.9 joules, so from the overall average of the test it can be described that the room temperature is 45.6 and the zinc temperature is 53.8oC from the highest temperature difference at 12.00 WIB, room temperature and 13.00 WIB the highest absorption occurs at zinc temperature.
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