From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 1073/CH6/EX6.16/6_16.sce | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100755 1073/CH6/EX6.16/6_16.sce

(limited to '1073/CH6/EX6.16')

diff --git a/1073/CH6/EX6.16/6_16.sce b/1073/CH6/EX6.16/6_16.sce
new file mode 100755
index 000000000..98b1bcb50
--- /dev/null
+++ b/1073/CH6/EX6.16/6_16.sce
@@ -0,0 +1,41 @@
+clc;
+clear;
+//Example 6.16
+bpr=40.6;        //[K]
+Cpf=1.88;       //[kJ/kg.K]
+Hf=214;     //[kJ/kg]
+H1=505;     //[kJ/kg]
+mf_dot=4536;    //[kg/h] of feed solution
+ic=0.2;      //Initial conc
+fc=0.5;      //Final concentration
+m1dot_dash=(ic/fc)*mf_dot       //Thisck liquor flow arte[kg/h]
+mv_dot=mf_dot-m1dot_dash        //[kg/H]
+Ts=388.5;        //Saturation temperature of steam in [K]
+bp=362.5        //b.P of solution in [K]
+lambda_s=2214;     //[kJ/kg]
+P=21.7;      //Vapor space in [kPa]
+Hv=2590.3;       //[kJ/kg]
+
+//Enthalpy balance over evaporator
+ms_dot=(m1dot_dash*H1+mv_dot*Hv-mf_dot*Hf)/lambda_s     //[kg/h
+printf("\nSteam consumption is %f kg/h\n",ms_dot);
+dT=Ts-bp        //[K]
+U=1560      //[W/sq m.K]
+Q=ms_dot*lambda_s           //[kJ/h]
+Q=Q*1000/3600               //[W]
+A=Q/(U*dT)      //[sq m]
+printf("\nHeat transfer area is %f sq m\n",A);
+
+//Calculations considering enthalpy of superheated vapour
+
+Hv=Hv+Cpf*bpr   //[kJ/kg]
+ms_dot=(m1dot_dash*H1+mv_dot*Hv-mf_dot*Hf)/lambda_s     //[kg/h]
+printf("\n Now,Steam consumption is %f kg/h\n",ms_dot);
+eco=mv_dot/ms_dot       //Steam economy
+printf("\nEconomy of evaporator %f\n",eco);
+Q=ms_dot*lambda_s       //[kJ/h]
+Q=Q*1000/3600           //[w]
+A2=Q/(U*dT)              //Area
+printf("\nNow,Area is %f\n",A);
+perc=(A2-A)*100/A           //%error in the heat transfer area 
+printf("\n If enthalpy of water vapour Hv were based on the saturated vapour at the pressure\nthe error introduced is only %f percent\n",perc);
-- 
cgit