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/CH12/EX12.7/Ex12_7.sce | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100755 2510/CH12/EX12.7/Ex12_7.sce (limited to '2510/CH12/EX12.7/Ex12_7.sce') diff --git a/2510/CH12/EX12.7/Ex12_7.sce b/2510/CH12/EX12.7/Ex12_7.sce new file mode 100755 index 000000000..90331fcc8 --- /dev/null +++ b/2510/CH12/EX12.7/Ex12_7.sce @@ -0,0 +1,18 @@ +//Variable declaration: +T_sat = 126.0 //Saturation temperature (°F) +T = 64.0 //Surface temperature of tube (°F) +g = 32.2 //Gravitational acceleration (ft^2/s) +D = 4.0/12.0 //Outside diameter of tube (ft) + +//Calculation: +Tf = (T_sat+T)/2.0 //Mean film temperature (°F) +//From approximate values of key properties: +h_vap = 1022.0 //Latent heat of steam (Btu/lb) +p_v = 0.00576 //Density of steam (lb/ft^3) +p_l = 62.03 //Density of liquid (lb/ft^3) +k_l = 0.364 //Thermal conductivity of liquid (Btu/h.ft.°F) +mu_l = 4.26*10**-4 //Absolute viscosity of liquid water condensate (lb/ft.s) +h = 0.725*((p_l*(p_l-p_v)*g*h_vap*k_l**3)/(mu_l*D*(T_sat-T)/3600.0))**(1.0/4.0) //Average heat transfer coefficient (Btu/h.ft^2.°F) + +//Result: +printf("The average heat transfer coefficient is : %.1f Btu/h.ft^2.°F.",h) -- cgit