Freeprojectmaterial

ABSTRACT The effect of temperature variation on the viscosity of SEA 40W oil samples, (Tonimas oil, Mobil oil, A-Z oil, Total oil and Kommaz) has been assessed. These viscosity values decrease as temperature increase. From this result Mobil oil has the lowest viscosity value while Komaz oil has the highest value. Models for calculating their viscosity value for a wide range of temperature are also developed. Tonimas       =       0.518          exp  3456.22                …

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ABSTRACT An automatic cooling fan system is constructed and developed in this research. The device uses a temperature sensor; a comparator unit and relay switch to automatically regulate the speed of the fan, creating breeze to enhance convective heat transfer. The developed household electric fan automatically changes speed in five different ascending levels with respect to the calibrated temperature range of the environment. Depending on the temperature of the environment, the fan automatically regulates its speed, making the device safe…

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