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Fan Energy saving work sheet
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document.xls 04/17/202319:25:31
Project: Page 1 04/17/2023
Rockwell Automation
Fans - Energy Savings Calculator Ges.m.b.H.A-1150 Wien, Austria
Tel +43 (0)1 892 88 80-0 Fax +43 (0)1 892 88 80-80Help [email protected]
Input-Field [email protected] Time [DAY] 357 8568 Std. Hours
Cost per kWh[US$] 0.0450Cost per kvarh[US$]
Trafo Efficiency 98.0% VFD kvarh 3546407 kvarh
PF for the machine by 100% Load 0.87 Motor kvarh 5641149 kvarh
PF for the machine by 50% Load 0.75 Language= E D= German Languager or E = EnglishLoad-curve general YES X (BLUE) x Calculation= K H = Horsepower or K ( Kilo watts )Burden-curve input YES X (RED) Currency= U E=Euro ( Dollars ) or U=USF ( Dollars )
max. Power[kW] 900Investment price VFD[kUS$] 200
Energy cost without VFD[kUS$] 335Energy cost with VFD[kUS$] 153
Savings per Year[kUS$] 181Amortization Time [DAY] 402 0
Operating Time [%] 0 0 0 0 0 3 12 40 38 3 4Speed 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Flow 0 10 20 30 40 50 60 70 80 90 100
------------------------------------ 0 100 200 300 400 450 500 600 700 800 900------------------------------------- 0 0% 0% 0% 0% 55% 57% 80% 81% 95% 100%
Calculation Power Load-curve[kW] 0 18 36 54 72 108 189 315 477 675 900Full load regulation 900 900 900 900 900 900 900 900 900 900
Losses 882 864 846 828 792 711 585 423 225 0Regulation Type v
Without regulation (V)
Hydraulic Clutch Regulation (T) Output damper regulation (A) Bypass regulation (B) Input damper regulation (E)
0% 1000% 2000% 3000% 4000% 5000% 6000% 7000% 8000% 9000% 10000%0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
0
100
200
300
400
500
600
700
800
900
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Power Table Calculation Power Load-curve[kW]
Full load regulation
Investment price
VFD[kUS$]
Energy cost without
VFD[kUS$]
Energy cost with
VFD[kUS$]
Savings per Year[kUS$]
Amortization Time [DAY]
0
100
200
300
400
200
335
153 18
1
402
Cost Evaluation
