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/CH2/EX2.21/2_21.sce | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100755 1073/CH2/EX2.21/2_21.sce

(limited to '1073/CH2/EX2.21')

diff --git a/1073/CH2/EX2.21/2_21.sce b/1073/CH2/EX2.21/2_21.sce
new file mode 100755
index 000000000..da1f59cfa
--- /dev/null
+++ b/1073/CH2/EX2.21/2_21.sce
@@ -0,0 +1,18 @@
+//Exaample2.21
+//Given
+k1=0.7   //common brick   W/((m.K)
+k2=0.48  //gypsum layer [W/(m.K)
+k3=0.065 //Rockwool    [W/m.K]
+//Heat loss with insulatiob will be 20% of without insulation
+A=1      //sq m
+x1=0.1   //[m]
+x2=0.04 //[m]
+R1=x1/(k1*A)   //K/W
+R2=x2/(k2*A)   //K/W
+R=R1+R2        //K/W
+//R3=x3/(k3*A)
+QbyQd=0.2
+sigRbyRd=QbyQd
+x3=(R/QbyQd-R)/15.4 //m
+x3=x3*1000          //[mm]
+printf("Thickness of rockwool insulation =%f mm",x3)
\ No newline at end of file
-- 
cgit