Home businesses are part of UMKM whose existence is very useful in improving the national economy, one of which is in the distribution of the people's income. This science and technology for society (IbM) activity targets home business called "Naurah Cakes". This home business located in Pangkalbalam sub-district, Pangkalpinang city is engaged in the cake and bread business with the main product being birthday cake which has been occupied since 2010. The problems faced by partners are 1) lack of capital, 2) lack of equipment 3) limited human resources, and 4) the absence of financial statements. This IbM activity aims to increase productivity and profitability through technology transfer in the form of stand mixers, frosting deco pens, printers, and cork cutters for the process of making and decorating birthday cakes. The methods used in this IbM activity include training, mentoring, and monitoring. The results of this IbM activity are as follows: 1) an increase in productivity seen from the aspect of effectiveness in the process of making birthday cakes, 2) an increase in the quality of the birthday cake produced and 3) an increase in profitability by 19.44% from 40.47% before the activity. to 54.91% at the end of the activity. Home Business "Naurah Cakes" is a very productive and creative IbM partner, but it needs to be supported by more modern science and technology and sustainable assistance so that the business can develop better, so that in the future partners can increase their turnover, quality, and quantity of their business.
Recent days, more and more people are becoming interested in "free-energy". "Free-energy" means the energy sources used freely without to pay. The sources of "free-energy" are sunlight, rainfall, wind energy, wave power, and tidal power. There are other sources of power such as gravity, electrical charge in the atmosphere and ionosphere, and a mass. FESS (Flywheel Energy Storage System) is an attempt to store kinetic energy generated from the rotation flywheel in which the electrical power output from the generator as an input to the motor. Mass flywheel greatly affects the amount of power generated by a generator which will serve as a flywheel device or distributors of energy while at the induction generator to eventually convert mechanical energy into electrical energy and vice versa. In this system design becomes very important for the flywheel can store the kinetic energy. This research aims to design and build mechanisms as a means of comparison FESS flywheel effect of the geometry of the kinetic energy generated. The research method is done by making three different geometric design flywheels, and then analyzed with the help of FESS. From the experimental results, flywheel 1 with a ringtype web-concave generate kinetic energy of 312.30 J and specific energy of 31.23 J / kg, at the flywheel 2 which is type-straight arm kinetic energy gained by 316.73 J and energy specific of 31.67 J / kg and flywheel 3 with a ring-type web-straight kinetic energy obtained by 284.997 J and specific energy of 28.49 J / kg. From the research data we can conclude that each design geometry flywheel has a different contribution to the performance of energy storage.
Waste is one of the many social problems faced by the community. To solve the problem of waste required a technology to process waste itself. Several studies have been done, one of which is design and construction thrasher machine. There are several studies on the design and construction thrasher machine. However, the analysis was conducted on one type of thrasher machine with a particular waste material. This study aims to obtain the results of the efficiency analysis of the thrasher machine results on the type of thrasher machine and waste material. The method used is experimental method. The type of thrasher machine and waste material used as a free variable. The percentage of the chopping result is chosen as a variable depending on the speed of rotation and thrasher time as the companion variable. The results of this study based on the results of experiments, both qualitatively and quantitatively shows that plastic bottle trash has a suit with shear type, grass litter has a match with the type of swing and trash has a match with the type of crusher.
Palm brondolan are the outer fruit of the loose bunches and fall to the ground. Palm brondolan is used as a feed ingredient. Processing of palm brondolan for feed ingredients needs to be done by the process of damaging the material structure. This study aims to determine the quality of palm brondolan crusher using standard cutting eyes and determine the right shaft. In this study the crusher machine was designed using 13 circular cutting eyes to see the standard 4 x 1.75 mm, the number of teeth 40 pieces and the distance between cutting eyes 5 mm. This machine uses a source of driving power in the form of a 3 phase electric motor with 3 HP power and has a rotating speed of 1420 rpm and a rotation ratio of 1: 1 shaft. This study uses the experimental method, by comparing the shaft test with the quality of the palm blended crusher. The quality characteristics that are addressed are the smaller the better. The results of the study, obtained an effective engine capacity of 30 kg/hour. The quality of the crusher at 700 rpm shaft speed accelerated the size of coir length from 1 to 30 mm and the volume of shell and seed granules 8-27 mm3 while in shaft rotation 1420 rpm the size of 1-20 mm coir and the volume of grain and seeds 4-12 mm3 were obtained. From the results of the experiment proving that circular cutting eyes see the standard capable of destroying palm leaflets and shaft rotation affect the quality of the crusher. The 1420 rpm shaft rotation has a better crusher quality compared to 700 rpm shaft rotation.
Meningkatnya luas areal perkebunan kelapa sawit berdampak pada meningkatnya limbah perkebunan yang dihasilkan, salah satunya brondol sawit dan berdampak positif terdapat perkembangan teknologi pengolahan limbah sawit. Mesin pencacah brondol sawit sebagai salah satu pendukung produksi pakan ternak mampu menghasilkan cacahan dengan dimensi serat dan bungkil yang layak untuk pakan ternak. Namun jenis ternak menuntut dimensi cacahan serat dan bungkil yang bervariasi pula. Tujuan penelitian ini adalah penyelesaian yang lebih efektif dari proyek ‘Desain dan Analisis Sistem Pencacah Brondol Sawit dengan Variasi Ketebalan Spacer Cutter Produk 3D FDM’. Proses desain suatu komponen mesin harus memperhitungkan tegangan dan deformasi yang terjadi sehingga dapat diketahui apakah komponen yang didesain memiliki kualitas yang baik atau tidak. Lima langkah proses pemecahan masalah adalah sebagai berikut: 1) Tentukan persyaratan, 2) Kumpulkan/analisis informasi, 3) Kembangkan beberapa opsi, 4) Pilih opsi terbaik, dan 5) Implementasikan desain. Simulasi desain dan analisis dilakukan pada komponen poros pencacah, spacer cutter, dan pegas tekan. Dari hasil simulasi diperoleh data desain poros pencacah mengunakan bahan baja, dimensi Æ20mm/ Æ16mm, dan beban merata w= 0,24 N/mm. Analisis tegangan bending maksimum sB= 1,847 MPa, tegangan torsi t = 0,103 MPa, dan defleksi fmax = 4,201 microm. Desain komponen spacer cutter mengunakan bahan ABS, dimensi Æ70mm/ Æ20mm dengan variasi ketebalan 10-15 mm, dan beban tekan F= 100 N. Analisis Von Mases Stress sebesar 0,0319665 MPa dan displacement maksimum 0,0000713021 mm. Desain komponen pegas tekan mengunakan bahan baja karbon, dimensi kawat 2 mm, diameter dalam 20 mm, dan panjang 100 mm. Analisis pemeriksaan pegas bernilai positif.
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