A single-effect evaporator operates at 13 kN/m². What will bc the heating surface necessary to concentrate 1.25 kg/s 2) of 10% caustic soda to 41% assuming a value of U of 1.25 kW/m*K, using steam at...

Extracted text: A single-effect evaporator operates at 13 kN/m². What will bc the heating surface necessary to concentrate 1.25 kg/s 2) of 10% caustic soda to 41% assuming a value of U of 1.25 kW/m*K, using steam at 390 K? The heating surface is 1,2 m below the liquid level. Boiling point rise of solution Feed Temperature Specific heat of feed Specific heat of the product Specific gravity of boiling product : 30 K : 291 K :4.0 kJ/kgK : 3.26 kJ/kgK : 1.39