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All Journal Journal of Mechanical and Manufacture J-ENSITEC (Journal of Engineering and Sustainable Technology)
Alwi Albaar
Universitas Majalengka
Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Design Of A Coconut Shell Charcoal Briquette Mixer Machine With A Capacity Of 50kg Asep Rachmat; Gilang dwi Saputra; Alwi Albaar
J-ENSITEC (Journal of Engineering and Sustainable Technology) Vol. 12 No. 02 (2026): June 2026
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/j-ensitec.v12i02.17946

Abstract

Coconut shell waste has not been optimally utilized, despite its potential to be processed into charcoal briquettes with higher economic value. One of the critical stages in briquette production is the mixing process, which requires an efficient and reliable mixing system to ensure homogeneity. This study aims to design a coconut shell charcoal briquette mixer machine with a capacity of 50 kg. The design methodology includes determining the mixer drum capacity, frame dimensions, and shaft specifications, followed by mechanical analysis to evaluate the torsional load acting on the shaft. Simulation analysis was conducted to assess the structural performance of the machine. The results indicate that the maximum stress due to torsional loading is 1.714 × 10⁵ Pa, while the resulting deformation is 3.306 × 10⁻⁵ m. These results demonstrate that the designed mixer machine meets the required safety criteria and is capable of operating effectively in the briquette mixing process. The proposed design is expected to improve efficiency and consistency in coconut shell charcoal briquette production.
DESIGN AND CONSTRUCTION OF A HYDRAULIC RAM PUMP Encu Shobari; Alwi Albaar
Jurnal Mekanika dan Manufaktur Vol 5 No 2 (2026)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jmm.v5i2.19356

Abstract

Areas whose land surface lies higher than the available water source often face difficulty obtaining a continuous water supply. Using an electric pump to lift water under such conditions increases operational costs because it depends on electrical energy, so an alternative technology is needed that can raise water from a lower to a higher elevation without fuel or electricity. This study aims to design and construct a hydraulic ram pump as a solution for community water needs in Argalingga Village, Argapura Subdistrict, Majalengka Regency, where the elevation difference between the water source and the settlement is approximately 21 m with a distance of about 100 m. Concept selection was carried out using the Analytic Hierarchy Process (AHP) on five design alternatives based on price, working performance, ease of use, maintenance, and service life criteria, with the hydram pump selected as the alternative with the highest final weight (0.290). The pump was constructed from PVC pipe with a 2-inch pump body diameter, a 3-inch delivery tank, and a 2-inch input pipe. Testing was conducted using five variations of input height and input pipe length. Results show that at an input height of 1 m and input length of 8 m, a maximum output height of 13 m was achieved with a discharge of 1.20 L/min; at 1 m and 12 m, output height 13 m with 1.71 L/min; at 2 m and 16 m, output height 17 m with 1.89 L/min; at 2 m and 20 m, output height 17 m with 3.00 L/min; and after extending the output pipe length at the 2 m/20 m configuration, a maximum output height of 21 m with a discharge of 2.12 L/min was obtained. These results indicate that increasing the input height and input pipe length improves both the lifting height and discharge output of the hydram pump.
Co-Authors Encu Shobari Gilang dwi Saputra Rachmat, Asep