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Diffstat (limited to '3681/CH4/EX4.17')
| -rw-r--r-- | 3681/CH4/EX4.17/Ans4_17.PNG | bin | 0 -> 5553 bytes | |||
| -rw-r--r-- | 3681/CH4/EX4.17/Ex4_17.sce | 15 |
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diff --git a/3681/CH4/EX4.17/Ans4_17.PNG b/3681/CH4/EX4.17/Ans4_17.PNG Binary files differnew file mode 100644 index 000000000..57e75dacf --- /dev/null +++ b/3681/CH4/EX4.17/Ans4_17.PNG diff --git a/3681/CH4/EX4.17/Ex4_17.sce b/3681/CH4/EX4.17/Ex4_17.sce new file mode 100644 index 000000000..9ccf3b01e --- /dev/null +++ b/3681/CH4/EX4.17/Ex4_17.sce @@ -0,0 +1,15 @@ +// Calculating the temperature of machine after one hour of its final steady temperature rise
+clc;
+disp('Example 4.17, Page No. = 4.24')
+// Given Data
+Ti = 40;// Initial temperature (in degree celsius)
+T_ambient = 30;// Ambient temperature (in degree celsius)
+Tm = 80;// Final steady temperature rise (in degree celsius)
+Th = 2;// Heating time constant (in hours)
+t = 1;// Since we have to calculate temperature of machine after one hour of its final steady temperture rise (in hours)
+// Calculation of the final steady temperature rise of coil surface and hot spot temperature rise
+Ti_rise = Ti-T_ambient;// Initial temperature rise (in degree celsius)
+T = Tm*(1-%e^(-t/Th))+(Ti_rise*%e^(-t/Th));// Temperature rise after one hour (in degree celsius)
+disp(T+T_ambient,'Temperature of machine after one hour (degree celsius)=');
+//in book answer is 67.54 (degree celsius). The answers vary due to round off error
+
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