1 files changed, 16 insertions, 0 deletions
diff --git a/965/CH2/EX2.21/21.sci b/965/CH2/EX2.21/21.sci
new file mode 100644
index 000000000..a9ba45054
--- /dev/null
+++ b/965/CH2/EX2.21/21.sci
@@ -0,0 +1,16 @@
+clc;
+clear all;
+disp("thickness of insulation")
+ti=310;// degree C
+t0=45;// degree C
+//tair=12 to 32 degree C
+k=0.036;//W/(m*C)
+h0=12;//W/(m^2*C)
+//q=Q/A=(ti-tair)/(L/k+1/h0);
+//(ti-tair)/(L/k+1/h0)=(t0-tair)/(1/h0);
+//L=(k/h0)*(ti-t0)t/(t0-tair)
+disp ("thickness of insulation will be large for tair = 32 degree C")
+tair=32;// degree C
+L=(k/h0)*(ti-t0)/(t0-tair);
+disp("mm",L*1000,"thickness of insulation = ")
+