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Tugas Audit EnergiPertanyaan 1

SolusiMenghitung efisiensi fan static sebelum instalasi ESPCalculate the new impeller diameter if the impeller is trimmed, that would result in a reduction in fan efficiency of 5%Calculate the new RPM that would result in a fan efficiency of 60%Determine which of the two options is more energy efficient

Menghitung Efisiensi Static Fan Sebelum Instalasi ESP1. Power input pada shaft fan=power motor x efisiensi=120 x 0.86=103.2 kW2. Efisiensi fan static= Flow x Pressure developed across fan 102 x Power required at fan shaft= 90 x 80 102 x 103.2= 0.68 = 68%

Calculate the new impeller diameter if the impeller is trimmed, that would result in a reduction in fan efficiency of 5%Calculate the new RPM that would result in a fan efficiency of 60%Determine which of the two options is more energy efficientPower required by impeller trimming = 44.8 kWPower required by reducing RPM = 47 kWTherefore impeller trimming is the more energy efficient option.

calculate the operation efficiency=Q * H * g3600 * P * eff motor=0,311915=31%Explain what would be the best solution to obtain the required flow rate variationdidapat effisiensi sebesar 31%untuk variasi flow 500 m3/h sampai 700 m3/h

opsi yang paling optional menggunakan variable speed drive (VSD) karena flow rate (Q) is proportional to the rotating speed (N)Calculate the power savings if the options suggested under question 2 would reduce the flow rate of the pump is 550 m/h Relationship flow rate Q and RPM: Q1/Q2= N1/N2Relationship power P and RPM: P1/P2= (N1/N2)^3diketahuiQ1 =550Q2 dari desain =800N1 =1020,9375N2 =1485P1 =51.99 KwP2 =160N1 =1020,938N2 =1485power yang didapat 51.99 Kwpower saving 160 Kw - 51.99 = 108.01 kw