Analisis Efektivitas Penurunan Suhu Dinamo Motor Listrik pada Ruang Tertutup dengan Menggunakan Exhaust Fan
Keywords:
exhaust fan, electric motor, temperature reduction, forced convection, ventilationAbstract
An electric motor running continuously produces heat from power losses. Heat that accumulates in an enclosed space without ventilation can damage the winding insulation and shorten the motor life. This study analyzes the effectiveness of an exhaust fan in lowering the temperature of an electric motor dynamo in an enclosed space. The method is an experiment using a single-phase ADK YL-63B-4 induction motor (0.18 kW, 220 V) and a Maspion MV-250NEX exhaust fan (10 inches, 30 W, 860 m³/h). The motor surface temperature was measured with a TM-902C type K thermocouple digital thermometer. Testing was carried out in an open space for 20 minutes per condition and in an enclosed cardboard space with a volume of 0.606 m³. The open space test showed a final motor temperature of 55.9°C without the fan and 46.6°C with the fan, a decrease of 9.3°C (16.64%). In the enclosed space, the temperature that reached 97.1°C dropped to 52.3°C within one minute, a decrease of 44.8°C (46.14%). The heat transfer rate increased from 39.13 W to 78.88 W in the open space and reached 177.83 W in the enclosed space. The exhaust fan is proven effective in lowering the electric motor temperature, with the highest effectiveness in an enclosed space.
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