diff options
Diffstat (limited to '167/CH6/EX6.8/ex8.sce')
| -rwxr-xr-x | 167/CH6/EX6.8/ex8.sce | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/167/CH6/EX6.8/ex8.sce b/167/CH6/EX6.8/ex8.sce new file mode 100755 index 000000000..9cdd0097f --- /dev/null +++ b/167/CH6/EX6.8/ex8.sce @@ -0,0 +1,18 @@ +//ques8
+//Malfunction of a Refrigerator Light Switch
+clear
+clc
+COPr=1.3;//coefficient of performance of refrigerator
+Qref=40;//heat load of refrigerator in W
+Wref=Qref/COPr;//power consumed in W
+Wlight=Qref;//power consumed by light in W
+Wtotal=Wlight+Wref;//total additional power consumed in W
+nh=20*30*365/3600;//normal operating hour per yr (h/yr)
+//Then the additional hours the light remains on as a result of the malfunction becomes
+annualh=8760;// total number of annual hour in a year h/yr
+at=annualh-nh;//additional hr in h/yr
+aP=Wtotal*at/1000;//additional power consumption in kWh/yr
+printf('Additional power consumption = %.0f kWh/yr \n',aP);
+uc=0.08;//unit cost 0.08 $/kWh
+APC=aP*uc;//additional power cost in $/yr
+printf(' Additional power cost = $ %.1f/yr ',APC);
\ No newline at end of file |