Q Ansongle effe eves A solution of organic colloids in water is to be concentrated from $10\%.$ to $50\%.$ Solids in a sengle effect evaporator. Sleam is arailable at gange pressure of $1\mathrm{.}05$atm. A presuure of $100mmHg$ is to be mauntamed on vapour space. If feed ate is $25000k\frac{g}{n},$ calculate steam consumpition, economy and area of evaporator. $U=2900\frac{W}{m^2}k.$ Cp of feed is $3\mathrm{.}78k\frac{J}{k}gk.$ Feed temp is $50C.BP$ o $1$ water at $200mmHg$ is $50C.$ Steam temp is $130C.$

$$ of steam at $130C=2210k\frac{J}{k}g$

$$ if vapoar at $50C=2394k\frac{J}{k}g$