A surface condenser is designed for a condensation of vapour at the rate of 60 kg/ hr. It has 81 tubes in a square array of 9 x 9. Outside diameter of tube is 10 mm and its length is 1 m. What will be...

A surface condenser is designed for a condensation of vapour at the rate of 60 kg/ hr. It has 81 tubes in a square array of 9 x 9. Outside diameter of tube is 10 mm and its length is 1 m. What will be the condensation rate in vertical position instead of horizontal position?