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Category > Applied Sciences Posted 29 Jul 2017 My Price 5.00

Compute the difference in cost per year of operating them at $0.10 per kilo watt hour

 

In a factory, two machines, each delivering 27 kW are used on an average for 8.7 h/day, 320 days/year. If the efficiency of the newer machine is 87% and that of the older machine is 72%, compute the difference in cost per year of operating them at $0.10 per kilo watt hour

 

 

 
 

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Alpha Geek
(8)
Status NEW Posted 29 Jul 2017 10:07 AM My Price 5.00

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file 1501325550-1671957_1_636358703346012029_Power-consumption.docx preview (245 words )
N-----------ew -----------Mac-----------hin-----------e, ----------- Po-----------wer----------- de-----------liv-----------ery-----------= 2-----------7kW----------- E-----------ffi-----------cie-----------ncy-----------=87-----------%=0-----------.87----------- P-----------owe-----------r a-----------t s-----------ink-----------=0.-----------87*-----------27=-----------23.-----------49k-----------W -----------Ene-----------rgy----------- co-----------nsu-----------mpt-----------ion-----------=23-----------.49-----------(kW-----------)*8-----------.7(-----------h/d-----------ay)-----------*32-----------0(d-----------ays-----------/ye-----------ar)----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- =2-----------3.4-----------9(k-----------W)*-----------8.7-----------(h/-----------day-----------)*3-----------20(-----------day-----------/ye-----------ar)----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- = -----------653-----------96.-----------16 -----------kW------------h/y-----------ear-----------Del-----------ive-----------ry -----------cos-----------t=$-----------0.1-----------0(p-----------erk-----------W-h-----------)* -----------653-----------96.-----------16 -----------kW------------h/y-----------ear----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- =-----------$65-----------39.-----------616-----------/ye-----------ar ----------- Ol-----------d M-----------ach-----------ine-----------, -----------Pow-----------er -----------del-----------ive-----------ry=----------- 27-----------kW ----------- Ef-----------fic-----------ien-----------cy=-----------72%-----------=0.-----------72 ----------- Po-----------wer----------- at----------- si-----------nk=-----------0.7-----------2*2-----------7=1-----------9.4-----------4kW-----------
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