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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal Geuthee of Engineering and Energy
Helta, Fahri
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Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Artificial Lighting System Design with PWM Control for the Growth of Kangkung Microgreen Fauzan, Muhammad; Syukriyadin, Syukriyadin; Helta, Fahri; Syahrizal, Syahrizal; Alfisyahrin, Alfisyahrin
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1249-1261

Abstract

Microgreen plants such as lettuce, spinach, and kangkung can be cultivated indoors, with artificial lighting like Light Emitting Diodes (LEDs) replacing sunlight. This study compared the growth of kangkung microgreens under artificial lighting using Pulse Width Modulation (PWM) versus without PWM. Two sample trays, each containing 50 grams of kangkung seeds, were placed 50 cm below the light. The first tray used PWM lighting, starting with a 65% duty cycle at 8 a.m, increasing to 100% by 12 p.m, and decreasing back to 65% by 4 p.m. The second tray received constant lighting without PWM. Results showed that PWM improved power efficiency from 16.3 W without PWM to 13.36 W with PWM. Growth of kangkung microgreens improved with PWM, evidenced by better stem length, leaf count, wet weight, stem diameter, petiole length, and leaf width, although single root length with PWM (9.68 cm) was slightly shorter than without PWM (9.98 cm).Base on statistical t-test results showed that there was a significant difference in stem length between lighting treatments using the PWM method and without using the PWM method, with a significance level of 5%. The study successfully developed an automated lighting control system using PWM that enhances plant growth. Keywords: Artificial lighting, Indoor farming, Kangkung, Microgreen, Pulse wave modulation.
Design of hybrid solar and pyco hydro power plant using water reservoir tank Muttaqin, Asyrofi; Syukriyadin, Syukriyadin; Syahrizal, Syahrizal; Alfisyahrin, Alfisyahrin; Helta, Fahri
Journal Geuthee of Engineering and Energy Vol 3, No 1 (2024): Journal Geuthee of Engineering and Energy
Publisher : Geuthèë Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52626/joge.v3i1.37

Abstract

The energy contained in the flow of water from the tank can be utilized as an additional source of electrical energy, namely by making a Pico Hydro Power Plant (PLTPh). However, the flow of water produced is certainly not strong enough because it only relies on the height of the tank laying, and the water discharge is not too large. So, the energy from sunlight is also utilized simultaneously and becomes a hybrid PV-hydro power plant (PLTH PV-hydro) with the aim of producing more optimal alternative energy. PLTH PV-Hydro is designed using a combination of 10 WP monocrystalline solar panels and two 10W DC generators coupled with turbines. The distance between the water drop point and the generator is designed to be as high as 2 meters and uses a 12 V, 5Ah VRLA battery as an electrical energy storage system. Based on the tests that have been carried out, the water discharge measurement results are 147.82 cm3/s = 147.82 × 10-3 l/s. The total power that PLTH can generate is 5.32 Watts using a 5-watt lamp load, and it can charge the battery within 6 hours. 
Co-Authors Alfisyahrin, Alfisyahrin Muhammad fauzan Muttaqin, Asyrofi Syahrizal Syahrizal Syukriyadin, Syukriyadin