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All Journal International Journal Science and Technology (IJST) Jurnal Pengabdian Kepada Masyarakat
Ichsan Purnama
Universitas Gunadarma
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Languange, Linguistic, Communication & Media

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COMPARATIVE STUDY OF WASTE MOISTURE CONTENT DRYING METHOD BETWEEN HOT AIR BLOWING METHOD AND BOILING METHOD IN A HEATED ROOM Ichsan Purnama; Sari, Sri Poernomo; Kuncoro, Heru
International Journal Science and Technology Vol. 1 No. 3 (2022): November: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v1i3.235

Abstract

This waste problem can be used as new and renewable energy in the form of Refuse Derived Fuel (RDF) fuel. Due to its relation to energy, the calorific value of garbage becomes an important parameter. Water content is one of the important parameters that determine the calorific value. If the moisture content of the waste is high, then the energy needed for drying and destruction through combustion is also high, so a process of reducing the water content in the waste is needed. The drying mechanism is the most important part of the drying technique because by knowing the drying mechanism, it can be estimated the amount of energy and the need for the optimum air mass for drying. This study is to evaluate the needs of air masses, the amount of drying energy needed, then a comparison of drying calculations using the Relative Humidity dryer method through air media is heated by drying using the evaporation method through boiling by heating the walls of the drying room. The energy required in the Relative Humidity dryer method through a heated air medium is not only to heat the moisture content until it can evaporate but energy is also needed to heat the air from the initial temperature of heating the dryer air to the temperature out of the dryer. In addition, the amount of air needed to carry water vapor is very large. Based on the results of the discussion and calculations of each drying method to reduce the mass of water content in wet waste that has been carried out, it can be concluded that the drying method by evaporating the moisture content by heating the drying chamber is more efficient because it requires less energy than the method of blowing heated air.
Optimalisasi Penyiapan Pakan Kambing melalui Alat Pencacah Rumput Minimalis Tri Mulyanto; Ario Geraldi; Ichsan Purnama
Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 2 (2026): Jurnal Pengabdian Kepada Masyarakat
Publisher : CV. Era Digital Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59066/jpkm.v2i2.2161

Abstract

Ketersediaan hijauan menjadi kunci produktivitas peternakan kambing, namun penyiapan pakan sering terhambat karena pencacahan masih manual sehingga menyita waktu, menguras tenaga, dan menghasilkan ukuran cacahan tidak seragam. Kegiatan pengabdian ini menerapkan alat pencacah rumput minimalis tipe vertikal berbasis motor DC untuk meningkatkan efisiensi pengolahan hijauan. Kegiatan melibatkan 10 peserta dengan populasi sekitar 25 ekor kambing melalui demonstrasi lapangan, praktik pengoperasian, serta pendampingan perawatan dasar. Evaluasi dilakukan menggunakan pengamatan sebelum–sesudah pada 10 indikator, mencakup kecepatan, efisiensi waktu, beban kerja fisik, keseragaman hasil, kemudahan operasi, kelancaran proses, kerapihan area kerja, kepatuhan keselamatan, keterampilan perawatan, dan potensi keberlanjutan penggunaan. Hasil menunjukkan peningkatan konsisten dari 50–70% menjadi 80–90% setelah penerapan alat, terutama pada efisiensi waktu, keseragaman cacahan, dan kesiapan adopsi. Temuan ini menegaskan pentingnya teknologi tepat guna yang disertai pelatihan untuk mendukung keberlanjutan penyiapan pakan hijauan.
Co-Authors Ario Geraldi Kuncoro, Heru Sri Poernomo Sari Tri Mulyanto