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

---
 2510/CH18/EX18.21/Ex18_21.sce | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100755 2510/CH18/EX18.21/Ex18_21.sce

(limited to '2510/CH18/EX18.21/Ex18_21.sce')

diff --git a/2510/CH18/EX18.21/Ex18_21.sce b/2510/CH18/EX18.21/Ex18_21.sce
new file mode 100755
index 000000000..392267b1d
--- /dev/null
+++ b/2510/CH18/EX18.21/Ex18_21.sce
@@ -0,0 +1,17 @@
+//Variable declaration:
+m1 = 144206                     //Mass flow rate of flue gas (lb/h)
+cp1 = 0.3                       //Average heat capacities of the flue gas (Btu/lb F)
+cp2 = 0.88                      //Average heat capacities of the solid (Btu/lb F)
+//From example 18.18:
+T1 = 550                        //Initial temperature of gas ( F)
+T2 = 2050                       //Final temperature of gas ( F)
+T3 = 70                         //Initial temperature of solid ( F)
+T4 = 550-40                     //Final temperature of solid ( F)
+
+//Calculation:
+Dhf = m1*cp1*(T2-T1)            //For the flue gas, the enthalpy change for one hour of operation (Btu)
+Dhs = round(Dhf*10**-4)/10**-4  //For the solids, the enthalpy change for one hour of operation (Btu)
+m2 = Dhs/(cp2*(T4-T3))          //Mass of solid (lb)
+
+//Result:
+printf("The mass of solid is : %.0f lb .",m2)
-- 
cgit