Question: Question 1. (25 Marks) (a) What Is Conservative Analysis? Give An Example Of Conservative Estimation In Consequence Modelling Procedure. State The Disadvantage Of Conservative Analysis. (10 Marks) (b) Determine The Evaporation Rate From A 12 M Diameter Pool Of Pentane At An Ambient Temperature Of 296 K. The Pool Is On Wet, And The Solar Energy Input …

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Question 1. (25 marks) (a) What is conservative analysis? Give an example of conservative estimation in consequence modelling procedure. State the disadvantage of conservative analysis. (10 marks) (b) Determine the evaporation rate from a 12 m diameter pool of pentane at an ambient temperature of 296 K. The pool is on wet, and the solar energy input rate is 720 J/mºs. (12 marks) Additional data: Wind speed at 15 meters: 4 m/s Molecular weight of pentane: 72 kg/kmole Heat of vaporization of pentane: 27.4 kJ/ mol Vapor pressure of pentane at ambient temperature: 0.652 bar (abs) Kinematic viscosity of pentane in air: 1.5 x 10-5 m/s Diffusivity of air: 7.1 x 10-6 m/s Heat transfer coefficient for pentane: 40.5 J/(s.m2.C) Heat transfer coefficient for ground: 50.8 J/(s.m2.°C) (c) Based on your calculation in question 1(b), discuss whether the evaporation rate is dominated by the mass transfer evaporation or solar evaporation. (3 marks)