From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001 From: prashantsinalkar Date: Tue, 10 Oct 2017 12:27:19 +0530 Subject: initial commit / add all books --- 3685/CH19/EX19.8/Ex19_8.sce | 22 ++++++++++++++++++++++ 3685/CH19/EX19.8/Ex19_8.txt | 7 +++++++ 2 files changed, 29 insertions(+) create mode 100644 3685/CH19/EX19.8/Ex19_8.sce create mode 100644 3685/CH19/EX19.8/Ex19_8.txt (limited to '3685/CH19/EX19.8') diff --git a/3685/CH19/EX19.8/Ex19_8.sce b/3685/CH19/EX19.8/Ex19_8.sce new file mode 100644 index 000000000..9ab250626 --- /dev/null +++ b/3685/CH19/EX19.8/Ex19_8.sce @@ -0,0 +1,22 @@ +clc +// Given that +V = 4 // Volume flow rate in m^3/min +p1 = 1.013 // Pressure in bar +t1 = 15 // Temperature in degree centigrade +N = 250 // Speed in RPM +p4 = 80// Delivery pressure in bar +v = 3 //Speed of piston in m/sec +n_mech = .75 // Mechanical efficiency +n_vol = .8 // Volumetric efficiency +n = 1.25 // Polytropic index +printf("\n Example 19.8\n") +T1 = t1+273 +p2 = sqrt(p1*p4) +W = (2*n/(n-1))*(p1*100/n_mech)*(V/60)*((p2/p1)^((n-1)/n) - 1) +L = v*60/(N*2) +Vs = V/N +D_LP = sqrt(Vs*V/(%pi*L*n_vol)) +D_HP = D_LP*sqrt(p1/p2) +printf("\n Minimum power required by the compressure is %f kW,\n Bore of the compressure in low pressure side is %f cm,\n Bore of the compressure in high pressure side is %f cm,\n Stroke of the compressure is %d cm",W,D_LP*100,D_HP*100,L*100) +//The answers vary due to round off error + diff --git a/3685/CH19/EX19.8/Ex19_8.txt b/3685/CH19/EX19.8/Ex19_8.txt new file mode 100644 index 000000000..5a15c6210 --- /dev/null +++ b/3685/CH19/EX19.8/Ex19_8.txt @@ -0,0 +1,7 @@ + + Example 19.8 + + Minimum power required by the compressure is 49.337005 kW, + Bore of the compressure in low pressure side is 26.596152 cm, + Bore of the compressure in high pressure side is 8.921722 cm, + Stroke of the compressure is 36 cm \ No newline at end of file -- cgit