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+//Transport Processes and Seperation Process Principles
+//Chapter 1
+//Example 1.6-3
+//Introduction to engineering principles and units
+//given data
+//a)at 101.325 kPa
+
+H1=88.60;// enthalpy of water in kJ/kg at 21.11 degree celcius
+H2=251.13;// enthalpy of water kJ/kg at 60 degree celcius
+delH1=H2-H1;//change in enthalpy in SI units
+//enthalpy change in English units
+h1=38.09;//enthalpy of water in btu/lb at 70 degree F
+h2=107.96;//enthalpy of water in btu/lb at 140 degree F
+delh1=h2-h1;//change in enthalpy in English units
+mprintf("change in enthalpy in SI and English units :%f kJ/kg and %f btu/lb respectively",delH1,delh1);
+//b)Enthalpy change 172.2 kPa
+H3=2699.9;// enthalpy of water kJ/kg at 115.6 degree celcius
+delH2=H3-H1;
+h3=1160.7; //enthalpy of water in btu/lb
+delh2=h3-h1;//change in enthalpy in English units
+mprintf("change in enthalpy in SI and English units :%f kJ/kg and %f btu/lb respectively",delH2,delh2);
+//c)Enthalpy change at 172.2 kPa
+H4=484.9;//enthalpy of water in kJ/kg at 115.6 degree C
+delH3=H3-H4; //enthalpy change in SI units
+h4=208.4;//enthalpy of water in btu/lb at 240 degree F
+delh3=h3-h4;//change in enthalpy in English units
+mprintf("change in enthalpy in SI and English units :%f kJ/kg and %f btu/lb respectively",delH3,delh3);
+//end