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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /551/CH10/EX10.8 | |
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initial commit / add all books
Diffstat (limited to '551/CH10/EX10.8')
| -rwxr-xr-x | 551/CH10/EX10.8/8.sce | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/551/CH10/EX10.8/8.sce b/551/CH10/EX10.8/8.sce new file mode 100755 index 000000000..9b5e89330 --- /dev/null +++ b/551/CH10/EX10.8/8.sce @@ -0,0 +1,58 @@ +clc
+
+//For the air at 35°C DBT and 50% R.H.
+p_vs=0.0563; //bar; At 35 0C, from steam tables
+phi=0.5;
+p_v=phi*p_vs;
+p_t=1.0132; //bar
+
+t_dp1=23; //0C
+t_db1=35; //0C
+W1=0.622*p_v/(p_t-p_v);
+h_g1=2565.3; //kJ/kg
+R=287;
+cp=1.005;
+
+h_vapour=h_g1 + 1.88*(t_db1 - t_dp1);
+h1=cp*t_db1+W1*h_vapour;
+
+
+disp("(i) Relative humidity of out coming air and its wet bulb temperature.")
+
+disp("Relative humidity of exit air is 100 per cent.")
+
+t_wb=20; //0C
+disp("Wet bulb temperture=")
+disp(t_wb)
+disp("0C")
+
+p_v=0.0234; //bar
+p_vs=p_v;
+t_db2=20; //0C
+h_g2=2538.1; //kJ/kg
+t_dp2=t_db2;
+
+W2=0.622*p_v/(p_t-p_v);
+h_vapour=h_g2 + 1.88*(t_db2 - t_dp2);
+h2=cp*t_db2+W2*h_vapour;
+
+T=308; //K
+V=120; //m^3
+
+W=W1-W2; //Weight of water vvapour removed per kg of dry air
+h=h1-h2; //Heat removed per kg of dry air
+m=(p_t-p_v)*10^5*V/R/T;
+
+
+disp("(ii) Capacity of the cooling coil in tonnes of refrigeration")
+C=m*(h1-h2)*60/14000;
+disp("Capacity =")
+disp(C)
+disp("TR")
+
+
+disp("(iii) Amount of water removed per hour")
+Amt=m*(W1-W2)*60;
+disp("Amount of water removed per hour=")
+disp(Amt)
+disp("kg/h")
\ No newline at end of file |