For which one of the following situations would Kendall’s tau be appropriate? a) The Mohs scale rates the hardness of minerals. If one mineral can scratch another, it is judged….
What is the required surface area in m2 and the steam consumption?
Surface Area and Steam Consumption of an Evaporator. A single-effect evaporator is concentrating a feed solution of organic colloids from 5 to 50 wt %. The solution has a negligible boilingpoint elevation. The heat capacity of the feed is cp = 4.06 kJ/kg · K (0.97 btu/lbm · °F) and the feed enters at 15.6°C (60°F). Saturated steam at 101.32 kPa is available for heating, and the pressure in the vapor space of the evaporator is 15.3 kPa. A total of 4536 kg/h (10 000 lbm/h) of water is to be evaporated. The overall heat-transfer coefficient is 1988 W/m2 · K (350 btu/h · °F). What is the required surface area in m2 and the steam consumption?