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/CH15/EX15.20/Ex15_20.sce | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100755 2510/CH15/EX15.20/Ex15_20.sce (limited to '2510/CH15/EX15.20/Ex15_20.sce') diff --git a/2510/CH15/EX15.20/Ex15_20.sce b/2510/CH15/EX15.20/Ex15_20.sce new file mode 100755 index 000000000..8f0f73974 --- /dev/null +++ b/2510/CH15/EX15.20/Ex15_20.sce @@ -0,0 +1,14 @@ +//Variable declaration: +Di = 0.902/12.0 //Inside diameter of tube (ft) +Do = 1.0/12.0 //Outside diameter of tube (ft) +k = 60.0 //Thermal conductivity of tube (Btu/h.ft^2..) + +//Calculation: +//From example 15.19: +a = 0.00126 +Dr = (Do - Di)/2.0 //Radial thickness of tube wall (ft) +Rw = Dr/k //Resistance of wall (Btu/h..) +ho = 1.0/(a-Rw) //The revised ho (Btu/h.ft^2..) + +//Result: +printf("The revised ho is : %.0f Btu/h.ft^2.. .",ho) -- cgit