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Lady C. Ch. E. Lengkey
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Agriculture, Biological Sciences & Forestry

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MODIFIKASI ALAT PENGERING ENERGI SURYA TIPE RAK UNTUK PENGERINGAN BAHAN PANGAN Noviset Tumbal; Daniel P.M. Ludong; Lady C. Ch. E. Lengkey
COCOS Vol. 14 No. 4 (2022): EDISI OKTOBER-DESEMBER 2022
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.42747

Abstract

ABSTRACT This study aims to modify a racks-type dryer with a combination of electrical energy and sunlight and to design a heat distribution system for the 3 (three) drying racks to be uniform and the drying temperature can be maintained optimally. This study uses an experimental design method with a trial and error form. The implementation of this research includes the stages of modification, testing, as well as observation and data processing (temperature and humidity). After the dryer was modified, an experiment was carried out to dry the cayenne pepper. The result of the modification of a shelf-type solar dryer consists of several main components, namely a drying chamber, solar collector, and heating/electric element with dimensions of a rectangular drying chamber measuring 100 cm long, 60 cm wide, and 120 cm high, as well as a solar collector. measuring 215 cm long, 125 cm wide at the bottom, 50 cm wide at the top, and 16 cm thick. The experimental results obtained, namely the highest average temperature on each shelf, namely the top shelf 69.80 oC, the middle shelf 66.10 °C, and the bottom shelf 57°C. while the lowest RH on each shelf is the top shelf 11.50%, the middle shelf 14.30% and the bottom shelf 21.30%.
KAJIAN SIFAT FISIK KEDELAI VARITAS ANJASMORO DI DESA LOLAH KECAMATAN TOMBARIRI KABUPATEN MINAHASA Johsi R. Rawung; Lady C. Ch. E. Lengkey; Robert Molenaar
COCOS Vol. 15 No. 1 (2023): EDISI JANUARI-MARET 20223
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.43064

Abstract

ABSTRACT The purpose of this study was to measure the dimensions of length, width, and thickness of soybean seeds at (two) different moisture content at 14% moisture content at harvest and 9% after drying, as well as determine the arithmetic diameter and geometry of soybean seeds, calculate the weight of 1000 soybean seeds in ( two) different moisture content, namely water content at harvest 14% and after drying 9%, calculating roundness, bulk angle and friction angle of soybean seeds at (two) different moisture content at water content at harvest 14% and after drying 9%, and determine the bulk angle and friction angle of soybean seeds at (two) different moisture content at 14% water content at harvest and 9% after drying. The research method was carried out by the experimental method. Data were collected on soybean seeds with 2 levels of moisture content, namely the water content after threshing (14%) and after drying (9%). From the results of this study, the average length, width, and thickness of soybean seeds of the Anjasmoro variety were soybean seeds at 9% moisture content, respectively 7.54 mm, 6.21 mm, 5.04 mm, and at water content 14% respectively 7.70 mm, 6.22 mm, 5.07 mm, obtained an average weight of 100 soybean seeds 16.10 g. The average weight of 1000 soybean seeds is 161 g, the bulk angle of soybean seeds at 9% moisture content ranges (23.2 – 25.4) with the average value of soybean seeds at 9% moisture content and 14% moisture content ranging from ( 19.25º). The lowest bulk angle of soybean seeds was at 9% and 14% moisture content (20.03º – 18.05º) with an average value of soybean seeds 9% and 14% (18.58º – 20.09º) and the highest bulk angle of soybean seeds was at moisture content 9% and 14% (23.01º – 23.00º) the average value of soybean seeds 9% and 14% (21.29º – 21.08º). The average friction angle of soybean seeds at 9% moisture content (14.10º) and the average soybean seed at 14% moisture content (17.01º).
KARAKTERISTIK PENGERINGAN SAGU MENGGUNAKAN ALAT PENGERING TENAGA SURYA TIPE RAK1) Feyta Gloria Rawung; Daniel P. M. Ludong; Lady C. Ch. E. Lengkey
COCOS Vol. 15 No. 2 (2023): EDISI APRIL-JUNI 2023
Publisher : Universitas Sam Ratulangi

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Abstract

ABSTRACT This study aims to test the performance of a solar dryer for drying sago. Performance tests include: temperature distribution pattern, relative humidity of the air in the drying chamber, changes in moisture content, drying time, and drying rate. The benefits of this research are expected to use a rack-type solar dryer to shorten the drying time and also this tool can provide an overview of the use of solar energy in the process of drying sago and drying other crops. During the drying process there has been a temperature difference between the bottom shelf, middle shelf, top shelf, chimney and ambient air temperature. The average relative humidity of the ambient air on the first day is 63.75% with a maximum condition of 67% and the lowest air relative humidity condition is 60% and the average relative humidity of the air inside the device on the first day is 34.62% with a maximum condition of 37% and the lowest air relative humidity condition is 33%. The average relative humidity of the ambient air on the second day is 65.66% with a maximum condition of 69% and the lowest air relative humidity condition of 62% and the average relative humidity of the air insi de the device is 35.83% with a maximum condition of 38% and the lowest air relative humidity condition is 33%. The mathematical model of the relationship between water content and time on the bottom shelf is y = 0.6305e- 0.127x with R² = 0.972 on the middle shelf y = 0.6149e-0.118x with R² = 0.9875 on the top shelf y = 0.6434e-0.11x with R² = 0.9649. The drying rate on each shelf is different and changes occur every time because it depends on the mass of the material. The average drying rate on the lower shelf is 3.40%, the middle shelf is 3.31%, and the upper shelf is 3.21%. To reach a moisture content of 11-14% requires a total of 13 hours for 2 days. Keywoards : sago drying, rack tipe solar dryer
KARAKTERISTIK PENGERINGAN BIJI PINANG MENGGUNAKAN EXPERIMENTAL DRYER Tori Yigibalom; Lady C. CH. E. Lengkey; Ireine A. Longdong
COCOS Vol. 15 No. 2 (2023): EDISI APRIL-JUNI 2023
Publisher : Universitas Sam Ratulangi

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Abstract

Abstract Areca nut seeds at harvest generally have a high water content, so to reduce the water content of betel nuts, namely drying or drying the betel nuts, they must be dried because if they contain high water content, the betel nuts will be easily damaged. To obtain the drying characteristics, thick sliced, medium sliced, and thin sliced areca seed layers were dried using an experimental dryer. This study aims to analyze temperature changes in the dryer during the drying process, determine the drying characteristics of areca nut meat including moisture content versus time, drying rate versus time and drying rate versus moisture content. The betel nut meat taken from the Malalayang One area is then sliced into 3 thicknesses, namely thick, medium and thin. Observations of temperature changes were carried out at the temperature of the material in each thickness, the ambient temperature, the plenum temperature and the temperature above the dried material. The temperature data is plotted and analyzed graphically. The water content was analyzed descriptively calculated based on the hourly weight loss. drying rate obtained from calculations and analyzed graphically. The results showed the temperature distribution in the plenum room, drying room, material temperature and drying room temperature. The water content decreased inversely with the change in time, the longer the drying time, the lower the water content in Areca seed, showing a pattern of decreasing water content in this experiment by showing an exponential pattern. Drying time for Areca nut seeds using this drying tool takes 9, 5, and 4 hours for thick, medium, and thin slices. The moisture content of Areca seed at the end of drying was 9.0%, 4.8% and 3.07 for thick, medium and thin slices, respectively. The drying rate of Areca seed relative to the drying time decreased the drying rate. The average drying rates for thick, medium, and thin slices were 7.92%/hour, 15.10%/hour, and 19.31%/hour, respectively. Keywords : Drying, Areca Nut, Experimental Dryer
Co-Authors Angeline Y. Lapasi Bertje R. A. Sumayku Dandi Firmansyah A. Karim Daniel P. M. Ludong Daniel P.M. Ludong Dedie Tooy Emi Y. Sagas Feyta Gloria Rawung Frans Wenur Ir. Daniel P. M. Ludong, MSc Ireine A. Longdong Johsi R. Rawung Jovanka P. Lengkey Juanly J. Mamahit Maya M. Ludong Moh Fadel Alhabsyi Noviset Tumbal Ramly Lumanu Reyfhel H. F. Tagah Robert Molenaar Rodrigo J. Mokalu Stenli F. E. Pomantow Tori Yigibalom