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All Journal Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Transmisi: Jurnal Ilmiah Teknik Elektro AUSTENIT YOUNGSTER PHYSICS JOURNAL Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Jurnal Rekayasa Mesin JURNAL INTEGRASI Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Agrotek UMMat Jurnal Inovator Andalasian International Journal of Applied Science, Engineering, and Technology International Journal of Research in Vocational Studies (IJRVOCAS) Eksergi: Jurnal Teknik Energi Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Inclusive Society and Sustainability Studies (ISSUES) Jurnal Pengabdian Masyarakat Bangsa Journal of Mechanical Engineering and Applied Technology Jurnal Polimesin International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS) Journal of Mechanical Engineering and Fabrication
Yusuf Dewantoro Herlambang
Politeknik Negeri Semarang
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The Nexus of Knowledge Management and Partnership Network in Nurturing the Business Continuity of Agro-Industry Hermawan, Iwan; Hindrawati, Gita; Herlambang, Yusuf Dewantoro; Inayah, Inayah; Rahmawati, Lusiana
Inclusive Society and Sustainability Studies Vol. 4 No. 2 (2024): December Volume
Publisher : Research Synergy Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31098/issues.v4i2.2851

Abstract

This study aims to find the best model for coffee agribusiness development in Indonesia that acquires the construct of knowledge management. Knowledge Management helps businesses effectively collect, store, and use relevant information. The effectiveness of such information management is becoming increasingly important despite complex challenges such as intense competition and changing economic conditions. The main problem is that contradictions result in the relevance relevance between Knowledge Management and Business Continuity. From these problems, this research offers the Partnership Network as a mediating variable. This study aims to empirically examine the effect of knowledge management on business continuity. This research offers the Partnership Network variable as a mediator from the perspective of Resource-Based View Theory and Knowledge-Based View Theory. This study employs a quantitative approach with a positivism paradigm. The number of samples in this study was 179 with data testing using Structural Equation Modeling (SEM) with the SmartPLS analysis tool. This study found the effect of Partnership Network (PN) mediating variables that bridged Knowledge Management (KM) to Business Continuity (BC), namely Internalization (IN) to Business Continuity (BC), by 0.130. The perspective of this study uses the Resource Based View Theory and Knowledge-Based View Theory. Coffee farm owners need to join a trusted certified community to receive active knowledge transfer. The knowledge gained from training must be immediately applied to managing coffee farm challenges, such as lack of fertilizer and changing soil characteristics.
Experimental study on the use of aluminum waste as a heat energy storage medium in laboratory-scale drying equipment Apriandi, Nanang; An-Nizhami, Avicenna; Herlambang, Yusuf Dewantoro; Raharjanti, Rani; Rachman, Iqo Yovie; Suseno, Sigit; Khoirunnisa, Hilma; Khusna, Atina Nurul
Jurnal Agrotek Ummat Vol 11, No 4 (2024): Jurnal Agrotek Ummat
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jau.v11i4.26626

Abstract

One of the best ways to reduce food loss during harvest is drying. The main challenge in the drying process is reducing energy consumption as a heat source in drying equipment. Integrating thermal energy storage (TES) into drying equipment has proven to be an effective way to enhance energy efficiency in the drying process. This research aims to explore the potential of TES material in the form of aluminium chips sourced from machining waste and integrated into a drying device. The thermal characteristics of the drying system without and with the addition of TES are compared and evaluated under two testing conditions, namely charging and discharging. The results show that the integration of TES in the drying system can reduce the percentage of temperature drop in the drying chamber due to the charging-discharging process by 58.57%, with the average percentage of temperature drop in the drying chamber without and with the addition of TES being 25.56% and 10.59%, respectively. Overall, aluminium chips obtained from machining waste can be used as an alternative TES material that is environmentally friendly, inexpensive, and readily available.
Solar Drying Technology: Current Research Trends and Future Perspectives Apriandi, Nanang; Raharjanti, Rani; An-nizami, Avicenna; Herlambang, Yusuf Dewantoro; Pambudi, Yoyok Dwi Setyo; Rozi, Khoiri; Negara, Komang Metty Trisna; Setyowati, Nur
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 4 No. 3 (2024): November 2024
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v4i3.193

Abstract

Solar drying technology has become a vital innovation for sustainable food preservation and renewable energy utilization, offering an energy-efficient alternative to conventional drying methods. This study provides a comprehensive bibliometric analysis of research trends, influential authors, key institutions, and geographical contributions in the field of solar drying technology from 2004 to 2024. We analyzed 108 relevant publications using the Scopus database and VOSviewer software, revealing a significant increase in research output since 2010, with a marked surge after 2016. India and China emerge as leading contributors, driven by their large agricultural sectors and favorable solar conditions. Key research efforts have focused on improving energy efficiency, optimizing drying processes, and preserving product quality. Despite these advancements, critical gaps remain, particularly in scaling solar drying systems and integrating hybrid technologies that combine solar energy with other renewable sources. This study highlights the importance of interdisciplinary collaboration to advance technological innovation and address challenges in food security and energy sustainability. Future research should focus on developing hybrid systems, finding better ways to store energy, and studying how solar drying affects the taste and nutritional value of food in order to make it more useful in a wider range of climates and farming situations. Keywords: Solar Drying Technology, Bibliometric Analysis, Renewable Energy, Hybrid Systems, and Food Preservation.
Solar Drying Technology: Current Research Trends and Future Perspectives Apriandi, Nanang; Raharjanti, Rani; An-nizami, Avicenna; Herlambang, Yusuf Dewantoro; Pambudi, Yoyok Dwi Setyo; Rozi, Khoiri; Negara, Komang Metty Trisna; Setyowati, Nur
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 4 No. 3 (2024): November 2024
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v4i3.193

Abstract

Solar drying technology has become a vital innovation for sustainable food preservation and renewable energy utilization, offering an energy-efficient alternative to conventional drying methods. This study provides a comprehensive bibliometric analysis of research trends, influential authors, key institutions, and geographical contributions in the field of solar drying technology from 2004 to 2024. We analyzed 108 relevant publications using the Scopus database and VOSviewer software, revealing a significant increase in research output since 2010, with a marked surge after 2016. India and China emerge as leading contributors, driven by their large agricultural sectors and favorable solar conditions. Key research efforts have focused on improving energy efficiency, optimizing drying processes, and preserving product quality. Despite these advancements, critical gaps remain, particularly in scaling solar drying systems and integrating hybrid technologies that combine solar energy with other renewable sources. This study highlights the importance of interdisciplinary collaboration to advance technological innovation and address challenges in food security and energy sustainability. Future research should focus on developing hybrid systems, finding better ways to store energy, and studying how solar drying affects the taste and nutritional value of food in order to make it more useful in a wider range of climates and farming situations. Keywords: Solar Drying Technology, Bibliometric Analysis, Renewable Energy, Hybrid Systems, and Food Preservation.
PEMBUATAN BATIK TULIS ALAMI (ECOPRINT) Widyaningsih, Wiwik Purwati; Margana, Margana; Supriyo, Supriyo; Mulyono, Mulyono; Wahyono, Wahyono; Bono, Bono; Suwoto, Gatot; Herlambang, Yusuf Dewantoro; Roihatin, Anis
Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Vol. 2 No. 1 (2021): Vol. 2 No. 1 April 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (348.904 KB) | DOI: 10.32497/sitechmas.v2i1.3048

Abstract

Tujuan dari kegiatan ini adalah untuk meningkatkan pengetahuan dan ketrampilan kelompok ibu-ibu PKK RT 02 RW 02 di Kelurahan Kramas . Dengan kegiatan ini diharapkan dapat membuat Batik Ecoprint sehingga dapat meningkatkan penghasilan. Adapun program pelatihan pembuatan batik ecoprint   adalah 1) Sosialisasi program dan penegasan kerjasama : Dalam kegiatan ini akan disampaikan tentang program , pembagian pekerjaan dan jadwal pelaksanaan kegiatan. Agar terjalin kerjasama sinergis, dan komitmen bersama, 2) Pelatihan pembuatan batik ecoprint : Memberikan pelatihan bagaimana cara membuat batik Ecoprint sehingga dapat diharapkan meningkatkan nilai tambah (penghasilan) dan menjadikan bagi anggota ibu-ibu PKK RT 02 RW 02 mampu mandiri dan sejahtera, 3)Evaluasi : Akan dilakukan uji kompetensi terhadap peserta pelatihan pembuatan batik tulis Ecoprint, bagaimana cara berkreasi untuk mendapatkan hasil batik tulis Ecoprint yang nilai jualnya tinggi.
OPTIMIZATION OF PROCESS PARAMETERS IN 3D PRINTING FDM BY USING THE TAGUCHI AND GREY RELATIONAL ANALYSIS METHODS Arifin, Fatahul; Zamheri, Ahmad; Herlambang, Yusuf Dewantoro; Syahputra, Angga Panjy; Apriansyah, Icvan; Franando, Franando
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 15 No. 1 (2021): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.15.1.1-10

Abstract

The 3D printing technology is one of the technologies that is developing currently. This machine can make products easily, quickly, and precisely. 3D printing is used to print models, prototypes/modeling, teaching aids for education, health support devices, product design, and many more in 3D shapes. Fused Deposition Modeling (FDM) is the most popular among others 3D printing techniques. In simple concept, it does not need maintenance regarding solvents or glue. The spare parts can be found easily and cheaply.  In this research, we create objects by using Autodesk inventor that is called human denture. Then, it converted to G-Code using Simplyfy3D software version 4.1.2. The G-Code data is used in the 3D printer for making the product. We select parameters to print the product. In this study, we find the optimal parameters of the effect of shrinkage and hardness of the product. The 3 parameters are in this study namely; layer height, print speed, temperature print. The material of human denture is filament PLA +. The Taguchi method and Grey analysis are used to analyze the data result. The results of the analysis for optimal parameters are at Layer Height 0.15 mm, Print Speed 25 mm/s, and Print Temperature 210⁰C.
Solar radiation monitoring system for electric vehicle charging using solar modules based on the Internet of Things Herlambang, Yusuf Dewantoro; Huda, Muhamad Nurul; Antoro, Daffa Yudha Akbar Putra; Ghozali, Hanif Faizal; Setyawan, Martando Robby; Apriandi, Nanang Apriandi; An-Nizhami, Avicenna; Yanuar, Padang; Riadini, Elfrida Rizky; Marliyati, Marliyati
Journal of Mechanical Engineering and Fabrication Vol. 2 No. 1 (2025): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v2i1.17

Abstract

The utilization of solar energy to support electric vehicle charging still faces challenges related to efficiency and real-time solar radiation monitoring. Addressing this issue is critical given the importance of optimizing renewable energy to facilitate the transition toward sustainable transportation. This study offers a solution through the development of an Internet of Things (IoT)--based solar radiation monitoring system capable of measuring solar light intensity in real time. The system employs a BH1750 sensor integrated with an ESP32 microcontroller to process data, transmit it to the Firebase Realtime Database, and display it via an Android application. The methodology encompasses the design, implementation, and testing of the system on an electric vehicle placed in an open area for 10 hours of observation. Results indicate that the highest light intensity, recorded at 98,321 lux, corresponded to solar radiation of 776.74 W/m², while the lowest light intensity, 69 lux, resulted in radiation of 0.55 W/m². The implications of this research include enhanced efficiency in electric vehicle charging, the advancement of IoT-based solar energy systems, and the potential integration with energy storage technologies and predictive algorithms to improve energy sustainability.
PEMBANGKIT PANAS BUMI KAPASITAS 2 KW MEMANFAATKAN SISTEM ENTHALPI RENDAH UNTUK APLIKASI SISTEM OFF-GRID Herlambang, Yusuf Dewantoro; Harmoko, Udi; Widodo, Achmad; Yulianto, Gatot; Widada, Sugeng; Sahid, Sahid
Eksergi Vol. 17 No. 1 (2021): JANUARI 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.021 KB) | DOI: 10.32497/eksergi.v17i1.2285

Abstract

PLTP siklus biner merupakan salah satu solusi alternatif pemanfaatan panas bumi yang memanfaatkan sistem entalpi rendah. Skala percobaan pembangkit listrik siklus biner bertujuan untuk mengembangkan kemungkinan penggunaan tidak langsung dari sistem panas bumi entalpi rendah di situs Diwak. Unit ini adalah sistem siklus biner 2 kW yang terdiri dari empat komponen utama: evaporator, turbin, kondensor, dan sistem pendingin. Refrigeran R134a dipilih sebagai fluida biner karena kinerja yang diinginkan dan kemudahan ketersediaan di area lokal. Panas ditransfer ke fluida biner di sistem evaporator dengan loop ekstraksi termal. Pendinginan disuplai ke pipa ganda kondensor kemudian diedarkan sebagai loop pada sistem menara pendingin. Turbin putar digunakan sebagai ekspander untuk mengekstraksi pekerjaan dari sistem dan diumpankan oleh evaporator bertekanan tinggi. Sistem telah dirancang dan dibangun dan sekarang siap untuk komisioning dan pengujian.
OPTIMALISASI ARAH SUDUT TILT DAN SUDUT AZIMUTH DARI ALAT PEMANEN ENERGI RADIASI MATAHARI DI SEMARANG, JAWA TENGAH Sutanto, Bayu; Herlambang, Yusuf Dewantoro; Bono, Bono; Alfauzi, Abdul Syukur; Munawwaroh, Dita Anies
Eksergi Vol. 17 No. 2 (2021): MEI 2021
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (776.751 KB) | DOI: 10.32497/eksergi.v17i2.2545

Abstract

Energi surya merupakan sumber energi terbarukan yang sangat optimal untuk dikembangkan dan telah menarik banyak perhatian baik dari para peneliti maupun pemerintahan. Penelitian ini bertujuan untuk mengidentifikasi sudut kemiringan (tilt/slope angle) dan orientasi arah (azimuth angle) dari suatu alat pemanen energi surya untuk mendapatkan nilai radiasi maksimum pada sepanjang tahun di daerah Semarang, Jawa Tengah. Lokasi yang digunakan sebagai basis data untuk menghitung arah sudut optimum ini dipilih di Politeknik Negeri Semarang yang berkoordinat di 7 °03'13.4" (7.053715 °) Lintang Selatan dan 110 °26'06.8" (110.435220 °) Bujur Timur. Metode perhitungan dari sudut-sudut matahari dan koordinat di bumi digunakan untuk mendapatkan nilai estimasi radiasi matahari. Hasil penelitian menunjukkan bahwa sudut kemiringan optimum sepanjang tahun berada pada kisaran 0 ”“ 30.14 ° dengan orientasi arah ke utara dan pada kisaran sudut kemiringan 0 ”“ 16.00 ° dengan orientasi arah ke selatan. Sedangkan untuk pemasangan menggunakan sudut konstan sepanjang tahun, nilai optimum dicapai pada sudut kemiringan 6.99 ° dengan orientasi menghadap ke utara.
Analysis of Hybrid System in the Photovoltaic and Photothermal Technology Sutanto, Bayu; Munawwaroh, Dita Anies; Bono, Bono; Herlambang, Yusuf Dewantoro; Sumarno, F Gatot; Alfauzi, Abdul Syukur
Eksergi Vol. 19 No. 01 (2023): JANUARY 2023
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v19i01.4191

Abstract

The utilisation and optimisation of solar energy have a vital role in reducing the global need for conventional fossil energy. Moreover, it is also clean and eco-environmentally energy resources. The photovoltaic-thermal (PV-T) hybrid system that combines photovoltaic and photothermal technology is an ideal solution for creating high-efficiency energy conversion devices. In addition, this system can be constructed to be small and compact with a higher economic value than the conventional technology from the previous solar energy harvesters. This paper will review the PV-T hybrid system and provide the thermodynamic analysis and the feasibility study.
Co-Authors - Suwarti, - . Sahid . Wahyono A Fauzi, Abdul Syukur Achmad Widodo Adiba, Azka Fikral Ahmad Hamim Su’udy Al Huda, Luqman Al Rasyid, Zya Jamaluddin Alfauzi, Abdul Syukur AM Mufarrih Aminuyati Amrullah, Utsman Syah An Nizhami, Avicenna Andreas Wahyu Gunawan Anis Roihatin Annisa Dewi Agustin Antoro, Daffa Yudha Akbar Putra Anwar, Muhammad Khaerul Apriandi MS, Nanang Apriandi, Nanang Apriandi Apriansyah, Icvan Aris Fiatno Arnoldi, Dwi Azharuddin Balqis Balqis Bayu, Tatar Bono . Bono Bono Budhi Prasetiyo Budhi Prasetiyo Carlos R. S. Dianisa Khoirum Sandi Dicky Septrianto Diny Agustina Rahayu Dr. Fatahul Arifin, S.T., Dipl.Eng.EPD., M.Eng.Sc Dwi Arnoldi, S.T., M.T. Dwiana Hendrawati Effendi, Sairul Elfrida Rizky Riadini Elhas, Rivan Ma’rivan Ella Sundari, S.T., M.T. Eri Prihatmini Evan, Bah F Gatot Sumarno, F Gatot F. Gatot Sumarno, F. Gatot Fachry Abda El Rahman Fatahul Arifin Fatahul Arifin Fatahul Arifin, Fatahul Feby Agasa Fenoria Putri, S.T., M.T. Franando, Franando Gatot Suwoto Gatot Yulianto Ghozali, Hanif Faizal Gustaf Susetyo Hadi, Kms. M. Hairul Hartanto, Jimmy Hermawan, Baktiyar Mei Hindrawati, Gita Huda, Muhamad Nurul Inayah Inayah Indrawati, Ragil Tri Iwan Setiawan Khoiri Rozi Khoirunnisa, Hilma Khoryanton, Ampala Khusna, Atina Nurul Kurnianingsih Kurnianingsih, Kurnianingsih Kurniawan Kurniawan Aldy Kusuma Lee, Shun-Ching Lusiana Rahmawati Margana Margana Marliyati Marliyati Marliyati, Marliyati Mars Widodo Mochammad Denny Surendra Mochammad Denny Surindra Mochammad Facta Muhammad Arif Fadilah Muhammad Ikbal Mulyono Mulyono Munawwaroh, Dita Anies Muztaba, Robiatul Nabila, Lathifa Dylla Nafisah Amalia Nanang Apriandi Nanang Qosim Nandiyaguna Yusarindra Negara, Komang Metty Trisna Ningrum, Siti Mardiyanti Ningtias, Dieta Wahyu Asry Novarika, Wirda Padang Yanuar Padang Yanuar Pambudi, Yoyok Dwi Setyo Pradana, Wisnu Dyka Prasetya, Valendry Naufal Putri, Farika Tono Putri, Mega Purnama R, Rizky Amelia Rachman, Iqo Yovie Raditya Rizqy Wibowo Radjiq, Akhmad Ramadoni, Ramadoni Rani Raharjanti Rasid, M. RD. Kusumanto RM. Fauzi Romi Wilza Rr. Tony Yulianto Rusdianasari Safriana, Eni Sahid Sahid Sandi, Dianisa Khoirum Satito, Aryo Setiyawan, Trio Setyawan, Martando Robby Setyowati, Nur Siti Zulaikhah Slamet Priyoatmojo, Slamet Sudjito Soeparman Sudjito Sudjito Sugeng Widada Supandi supriyo supriyo Supriyo Supriyo Supriyo Supriyo Suseno, Sigit Sutanto, Bayu Suwarti Suwarti Suwarti Suwarti Syahputra, Angga Panjy Teguh Aji Wibowo Teguh Harijono Mulud Teguh Harijono Mulud Timotius Anggit Kristiawan Udi Harmoko Vita Ayu Aspriyanti Wahyono Wahyono Wahyu Isti Nugroho Wahyu Triharto Prabowo Wahyuni, Puri Wibowo, Andryana Dwiandara Widhaninggar, Diana Fika Wigiantoro Wigiantoro Willy Ravindo H Damanik Wilza, Romi Wiwik Purwati Widyaningsih Yahya Yanuar Mahfudz Safarudin Yehuda Tofan Indra Cahya Yosintaska Yosintaska Yudha Ramadhan Yudha, Venditas Yusi Amalia Renaningtyas Zainal Abidin Zakaria Zakaria Zakki Fuadi Emzain Zamheri, Ahmad Zulhan Widya Baskara