Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Jurnal Rekayasa Mesin Jurnal Pengabdian Magister Pendidikan IPA
Jayus Kharisma Hendra
Unknown Affiliation
Education Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Inovasi Pemanfaatan Sumber Daya Lokal Sebagai Sarana Budidaya Pertanian di Halaman Rumah Yang Murah dan Praktis Suwardji; Rudy Fermana; Rengga Astrada; Larassaty Octaprama; Mariatul Quro; Sabariyah; Nurlina; Jayus Kharisma Hendra; Izomil Fathoni
Jurnal Pengabdian Magister Pendidikan IPA Vol 5 No 1 (2022): Januari - Maret
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.291 KB) | DOI: 10.29303/jpmpi.v5i1.1473

Abstract

Potensi lokal dalam memenuhi kebutuhan dalam bertani sangat rendah diperhatikan. Sumber daya lokal bila dimanfaatkan secara tepat maka dapat memenuhi kebutuhan sehari-hari. Pertanian berskala rumahan dapat ditopang dengan sumber daya lokal. Salah satu sumber daya lokal di Desa Akar-akar adalah tongkol jagung kering, sekam padi, tanaman mimba, rumput teki dan lainnya. Sumberdaya tersebut dapat diolah menjadi produk yang dapat menunjang kegiatan budidaya pertanian berskala rumahan. Inovasi teknologi yang memanfaatkan sumber daya lokal ini dapat berupa pembuatan pupuk PGPR(Plant Growth Promoting Bacteria), biochar, dan pestisida nabati. Tongkol jagung dan sekam padi dapat menjadi biochar; rumput teki dapat menjadi pupuk PGPR; dan tanaman mimba dapat diolah menjadi pestisida nabati. Inovasi tersebut dapat memberikan dampak positif baik bagi masyarakat maupun lingkungan. Pemanfaatan ini dapat mempermudah penyediaan sarana produksi berskala rumahan yang murah dan praktis.
Performance of an Air-Water Harvester Machine under Various Inlet Air Relative Humidity Conditions Mirmanto Mirmanto; Made Wirawan; Faniar Reza Khatami; Arif Mulyanto; Yesung Allo Padang; Nurchayati Nurchayati; Jayus Kharisma Hendra
Jurnal Rekayasa Mesin Vol. 21 No. 2 (2026): Volume 21, Nomor 2, August 2026
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v21i2.7655

Abstract

Atmospheric water harvesting (AWH) using vapor-compression refrigeration systems has emerged as a promising approach for decentralized freshwater production. Although previous studies have investigated the effects of refrigeration-system configurations and operating parameters on water production, the influence of inlet air relative humidity on freshwater productivity, heat-transfer characteristics, and thermodynamic performance has not been comprehensively evaluated within a single experimental framework. This study experimentally investigates the performance of an air-water harvester operating at inlet relative humidities of 30%, 50%, and 70% under controlled laboratory conditions. Freshwater production, coefficient of performance (COP), total heat absorbed by the evaporator, and evaporator efficiency were evaluated using measurements of temperature, pressure, airflow velocity, electrical power consumption, and psychrometric properties. The results show that increasing inlet relative humidity significantly enhanced condensation and system performance, yielding the highest freshwater production of 0.345 kg and the maximum COP of 12.19 at 70% RH. In contrast, the highest evaporator efficiency (11.89%) and total heat absorbed by the evaporator (167.81 W) were obtained at 30% RH, where sensible heat transfer dominated the cooling process. The findings indicate that inlet air relative humidity strongly influences the distribution of sensible and latent heat transfer, thereby affecting both freshwater production and energy performance. This study provides an integrated experimental assessment of the thermodynamic response of refrigeration-based AWH systems to varying inlet humidity and offers practical guidance for optimizing system operation in humid tropical environments.
Co-Authors Arif Mulyanto Faniar Reza Khatami Izomil Fathoni Larassaty Octaprama M. Mirmanto, M. Made Wirawan Mariatul Quro Nurchayati Nurchayati Nurlina Rengga Astrada Rudy Fermana Sabariyah Suwardji Yesung Allo Padang