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_aJohn CarlosC. Mislang, Leidi Naces, Grazelle R. nadel, Arl Dominic C. Que.
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_aHybrid far infrared radiation and hot air rice grain dryer.
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_aUndergraduate Thesis : (Bachelor of Science in Electronic Engineering) - Pamantasan ng Lungsod ng Maynila, 2024.
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_aABSTRACT: Rice cultivation in the Philippines is vital for food security and economic stability, yet post-harvest losses from inefficient drying methods, especially after typhoons, significantly undermine production, this study explores the use of a Hybrid Far Infrared Radiation (FIR) and Hot Air Technology rice grain drying system to boost drying efficiency and reduce losses. Central to this system is an Arduino UNO microcontroller which composes a DHT22 Temperature and Humidity Sensor, various heating elements through a four-channel relay, and an i2c LED display for real-time data monitoring and control. The experimental setup unfolded in two stages: the first tested basic temperature control and drying effectiveness, while the second added humidity monitoring for enhanced precision. Results indicate that the new system drastically cuts drying time and energy use, drying a 3kg sample of NSIC Rc490H rice to the desired 14% moisture content in just 10 minutes-compared to 50 minutes with traditional methods-and uses significantly less power, with maximum consumption at 0.5kWh versus the 0.8 to 2.2 kWh per kilogram typical of conventional dryers. These findings suggest that Hydbrid FIR and Hot Air Technology could significantly improve the efficiency and sustainability of rice drying practices in the Philiipines.
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