QUESTION 1 1.1 A steam generator generates 5 650 kg wet steam per hour at 900 kPa with a dryness fraction of 0,95 from supply water at 43,8 C while using 620 kg coal with a calorific value of 32 MJ/kg. From the steam tables, use the following values: Pressure(kPa) ts (C) 9 43,8 hr (kJ/kg) 183 Hrg (kJ/kg) hg (kJ/kg) 2 398 2 581 900 175,4 743 2 030 2 773 1 kg of water requires 2 257 kJ heat to evaporate from and at 100 C. Calculate the thermal efficiency of the steam generator and the equivalent evaporation from and at 100 C. (6) 1.2 Name FOUR safety accessories that must be installed on an evaporator for a steam generator. (4)