Consider an air mass of temperature of 30°C and relative humidity 60% rising from sea surface (1000 mb) to 8 km in the (standard
) atmosphere (pressure decreases with altitude approximately 100mb per kilometer, temperature lapse rate 6.5K km-?). Find the height of cloud-base where air temperature is equal to dew-point temperature. If the conversion efficiency of water vapor in the clouds to precipitation is 5%, and the convection lasts 2 hours with average updraft velocities of 1 m s', what would be the total precipitation?
Answer: Taking as a basis of calculation 100 mol of gas leaving the conversion reactor, draw andcompletely label a flowchart of this process. Then calculate the moles of fresh methanol feed,formaldehyde product solution, recycled methanol, and absorber off-gas, the kg of steamgenerated in the waste-heat boiler, and the kg of cooling water fed to the heat exchangerbetween the waste-heat boiler and the absorber. Finally, calculate the heat (kJ) that must beremoved in the distillation column overhead condenser, assuming that methanol enters as asaturated vapor at 1 atm and leaves as a saturated liquid at the same pressure.
Explanation: This is because of the mixture of material used and the number of directions it causes strain I directly proportional to the number of times it causes stress.
