Saturated methyl chloride at 430 kPa (abs) condenses on a horizontal 10 × 10 bank of tubes. The 5-cm- OD tubes are equally spaced and are 10 cm apart center-to- center on rows and columns. If the surface temperature of the tubes is maintained at 78C by pumping water through them, calculate the rate of condensation of methyl chloride in kg/m s. The properties of saturated methyl chloride at 430 kPa are shown in the list that follows:

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saturation temperature = 16°C heat of vaporization = 390 kJ/kg liquid density = 936 kg/m³ liquid specific heat = 1.6 kJ/kg K liquid absolute viscosity = 2 x 10-4 kg/m s liquid thermal conductivity = 0.17 W/m K