Liquid oxygen which is boiling at 61 K is stored in a spherical container, 1 m in diameter covered with a 30 mm thick insulation having thermal conductivity of 0.0045 W/m°C. The outer surface is exposed to air at 326 K with a convective heat transfer coefficient of 22 W/m2°C. Latent heat of evaporation of oxygen is 214 kJ/kg. Find out the rate of O2 boil-off in kg/hr. Write your answer in four decimal places.

answer with explanation in handwritten format

describe the sequences of five production steps and stages from the initial research and development idea to the launch of the product for a metal casing or a car engine block. Use descriptive diagrams and or images, data to support your answers.