Sistem Monitoring Thermoelectric Sp1848 dengan Fan Cooling

Abstract

The utilization of waste heat from furnaces had not been optimized, even though it could be converted into electricity by using a Thermoelectric Generator (TEG). This research aimed to design and test a TEG system based on the SP1848 module equipped with a fan-based cooling system in order to utilize temperature differences as an alternative source of electrical power. The system was designed with key components, including a type K thermocouple, an INA219 sensor, an ESP32 microcontroller, a buck-boost converter, a lithium battery for energy storage, and an LCD I2C for real time monitoring. The experimental procedure involved placing the 20 TEGs arranged in parallel series on a furnace and observing the effect of the temperature difference (∆T) on the generated electrical output. The results showed that the fan cooling system maintained the stability of the cold side, allowing a greater ∆T to be achieved and significantly increasing the generated power. At the lowest ∆T of about 11,75°C, the system produced approximately 1,2 W, while at the highest ∆T of about 40,25°C, the output reached around 2,6 W. These findings confirmed that a larger ∆T resulted in higher electrical output. Therefore, the SP1848 TEG with fan cooling was considered a simple, low-cost, and environmentally friendly alternative power generator that could be applied in small-scale industries and rural areas. Keywords: Renewable energy, brick factory, INA219 sensor, K-type thermocouple, thermoelectric generator (TEG).