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

---
 3516/CH2/EX2.2/Ex2_2.sce | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 3516/CH2/EX2.2/Ex2_2.sce

(limited to '3516/CH2/EX2.2')

diff --git a/3516/CH2/EX2.2/Ex2_2.sce b/3516/CH2/EX2.2/Ex2_2.sce
new file mode 100644
index 000000000..1d2ee33f4
--- /dev/null
+++ b/3516/CH2/EX2.2/Ex2_2.sce
@@ -0,0 +1,33 @@
+//Page 14
+clc
+printf("\t Example 2.2 \n");
+printf("\t approximate values are mentioned in the book \n");
+La=8/12; // Thickness of firebrick wall,ft
+Lb=4/12; // Thickness of insulating brick wall,ft
+Lc=6/12; // Thickness of building brick wall,ft
+Ka=0.68; // themal conductivity of firebrick,Btu/(hr)*(ft^2)*(F/ft)
+Kb=0.15; // themal conductivity of insulating brick,Btu/(hr)*(ft^2)*(F/ft)
+Kc=0.40; // themal conductivity of building brick,Btu/(hr)*(ft^2)*(F/ft)
+A=1; // surface area,ft^2
+Ta=1600; // temperature of inner wall,F
+Tb=125; // temperature of outer wall.F
+Ra=La/(Ka)*(A); // formula for resistance,(hr)*(F)/Btu
+printf("\t resistance offered by firebrick : %.2f (hr)*(F)/Btu \n",Ra);
+Rb=Lb/(Kb)*(A); // formula for resistance,(hr)*(F)/Btu
+printf("\t resistance offered by insulating brick : %.2f (hr)*(F)/Btu \n",Rb);
+Rc=Lc/(Kc)*(A); // formula for resistance,(hr)*(F)/Btu
+printf("\t resistance offered by buildingbrick : %.2f (hr)*(F)/Btu \n",Rc);
+R=Ra+Rb+Rc; // total resistance offered by three walls,(hr)*(F)/Btu
+printf("\t total resistance offered by three walls : %.2f (hr)*(F)/Btu \n",R);
+Q=(1600-125)/4.45; // using formula for heat loss/ft^2,Btu/hr
+printf("\t heat loss/ft^2 : %.0f Btu/hr \n",Q);
+// T1,T2 are temperatures at interface of firebrick and insulating brick, and insulating brick and building brick respectively,F
+delta=(Q)*(Ra); // formula for temperature difference,F
+printf("\t delta is : %.0f F \n",delta);
+T1=Ta-((Q)*(Ra)); // temperature at interface of firebrick and insulating brick,F
+printf("\t temperature at interface of firebrick and insulating brick :%.0f F \n",T1);
+deltb=Q*(Rb);
+printf("\t deltb is : %.0f F \n",deltb);
+T2=T1-((Q)*(Rb)); //temperature at interface of insulating brick and building brick,F
+printf("\t temperature at interface of insulating brick and building brick :%.0f F \n",T2);
+//end
-- 
cgit