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1- The evaporation rate of drop in air and mass transfer coefficients, 2- The evaporation rate of drop if the temperature rises to 40 °C. The vapor pressures of water: at 25 °C is 3.168 kPa at 40 °C is 7.375 kpa

1- The evaporation rate of drop in air and mass transfer coefficients, 2- The evaporation rate of drop if the temperature rises to 40 °C. The vapor pressures of water: at 25 °C is 3.168 kPa at 40 °C is 7.375 kpa

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Q3// A raindrop with a radius of 6mm is evaporated in air at 25 °C and I atm where the diffusivity coefficient of water vapor in air at these conditions is 0.26 cm/s. Find: 1- The evaporation rate of drop in air and mass transfer coefficients, 2- The evaporation rate of drop if the temperature rises to 40 °C. The vapor pressures of water: at 25 °C is 3.168 kPa at 40 °C is 7.375 kpa
Transcribed Image Text:Q3// A raindrop with a radius of 6mm is evaporated in air at 25 °C and I atm where the diffusivity coefficient of water vapor in air at these conditions is 0.26 cm/s. Find: 1- The evaporation rate of drop in air and mass transfer coefficients, 2- The evaporation rate of drop if the temperature rises to 40 °C. The vapor pressures of water: at 25 °C is 3.168 kPa at 40 °C is 7.375 kpa
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