• LifeCycle Costing (LCC) calculation tool

    ReCiPe method has been chosen for the calculations of potential impacts for the abovementioned areas of protection and impact indiors. Externality outputs include a bar graph and a table with the calculated values, showing the contributions of the various items. The four calculated externalities are reported separately. There are two main reasons behind this .

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  • Vehicle Dynamics Calculation – Tractive Effort of a Car

     · Example: Calculate the applied tractive force for a rear wheel drive car with following specifiions: Wheel type = P215/65R15. Engine torque, Et = 2000 Nm. Efficiency of whole powertrain, η = Transmission ratio in first gear, Ng = Rear axle .

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  • Ball Mill Design/Power Calculation

     · The ball mill motor power requirement calculated above as 1400 HP is the power that must be applied at the mill drive in order to grind the tonnage of feed from one size distribution. The following shows how the size or select the matching mill required to draw this power is calculated from known tables 'the old fashion way'. Here is a section of a mill in operation. The power input ...

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  • Power Calculation for Rotating Cylinder

     · Power Calculation for Rotating Cylinder edisonf (Mechanical) (OP) 23 Aug 06 15:38. I need help, please. I have an appliion with a rotating cylinder in which material is tumbled for processing purposes. The following quantities are known although I have need of generic formulas in the future as these are variables between system appliions. Known .

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  • Winch calculation

    Motor. The amount of torque and power resulting from the calculation must be translated into a motor type and size. Depending on what is locally available in terms of power supply or even available physical space, the motor emerging from the calculations may prove beyond what is possible. In that case the motor and winch performance have to be ...

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  • Ball Mill Design/Power Calculation

     · The ball mill motor power requirement calculated above as 1400 HP is the power that must be applied at the mill drive in order to grind the tonnage of feed from one size distribution. The following shows how the size or select the matching mill required to draw this power is calculated from known tables 'the old fashion way'. Here is a section of a mill in .

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  • Design and Development of Three Phase Permanent Magnet ...

    A major part of the power consumption in the lowwattage reciproing compressors, used for refrigeration units, is associated with the motor. A variable speed compressor as opposed to a single speed compressor is known to provide energy savings due to its ability to match the load demand from the pump more closely to the power delivered by the pump. The .

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  • Motor Efficiency

    Motor efficiency varies between 70 and 96% [1]. The portion of electric energy that is not converted to mechanical power is converted to heat, which is mostly unusable. For example, assuming that no transmission losses occur: •. A motor with an efficiency of 80% will draw an electrical power of 1/= kW for each killowatt of shaft power ...

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  • The Impact of Condition on Motor Efficiency and Reliability

    This article discusses the financial impact of motor condition on electric motor efficiency and reliability by reviewing a combination of motor circuit analysis (MCA) and vibration techniques. Cost impacts on energy, production and maintenance will be outlined. The topic will surround a utility study and Department of Energy market transformation success during 2000 and .

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  • formula for calculating conveyor motor power

    Apr 10, 2009· Hi I'm looking for a calculation to work out the power required to move a conveyor. I have all sorts of information on the conveyor if anyone can help. The basics are its a Coal conveyor of 930 Metres long with wide running at m/min Looking at putting a Motor, Gearbox Inverter on it.

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  • What Determines the Rotating Speed of a Motor?

    More poles result in a lower motor speed: if all other factors are equal, a 4pole motor will rotate at half the speed of a 2pole motor. A 60 Hz power supply changes polarity 60 times per second, and a twopole motor will spin at 3,600 rpm when connected to this source. A .

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  • The Economics of Improving Power Factor |

    Selection of the right motor for the appliion can have a major impact on power factor. Use the highest speed motor possible. Twopole, 3600 RPM, motors have the highest power factor; power factor decreases as the number of poles increases. Size motors as close as possible to the horsepower demand of the appliion. A lightly loaded motor requires little real power .

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  • Agitator Power Requirement

    Agitator Power. Calculates agitator speed and power requirement for a given reactor geometry and mixture properties. Reactor Geometry. Batch Volume (V) m³. Agitator Narrow Hydrofoil Wide Hydrofoil Pitched Blade Rushton 6Blade 180 ° Concave User Defined. D/T Ratio

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  • Power and Efficiency Equations for Compressor Calculations

    The goal of compressor sizing calculations is often to find out the efficiency of the compressor and power required to drive that compressor, given the gas composition, flow rate, temperature pressure conditions at inlet and outlet pressure requirement. Let's look at equations frequently used in compressor calculations to determine power and efficiency of the compressor along .

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  • Understanding dc motor curves and temperature: Part 2

     · Equation 6a – Motor Output Power (at any point) P out = ω x T. Equation 6b – Maximum Output Power P max = x ω 0 x T LR. Equation 6c – Maximum Output Power (Theoretical) P max = x (V T 2 / R mt) Equations 6b and 6c illustrate the effect of motor resistance on the output power capability of the machine. Although not intuitive by looking at equation 6b, a higher winding ...

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  • Engineering: Compressor Power Calculation

     · For centrifugal compressors, the gas power can be calculated as GHP = W H p / ... For further calculation, motor drive has been selected. 5. Determination of the total polytropic head h*pT (from k, p2, p1, Z, Mf, T1) with Diagram 4 h*pT = kJ/kg 6. Determination of the max. polytropic head obtainable per casing hpG max (from umax) with Diagram 5 hpG max = 300 kJ/kg 7. .

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  • Watt (W) to Torque (Nm) Conversion Calculator | Electrical4u

    Watt (W) to Torque (Nm) Calculation: Motor Torque T (Nm) in Newton meter (Nm) is equal to of the electric power P (W) in watts divided by the speed N (rpm) in rpm.. Hence for converting watt to torque, T (Nm) = *P (W) / N (rpm). Nm = * Watt / RPM. Also our Watt to Nm conversion calculator is designed to get the exact value of .

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  • Motor Calculations | ECM

    Motor Calculations. Sept. 1, 2008. Motor protection and motor circuit protection require different calculations. Mike Holt.

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  • IEEE SF Motor Protection Fundamentals

    Calculation of Slip Slip ns = 120 • f / p = 120 • 60 / 6 rpm = 1200 rpm s = 1 –nr / ns = 1 –1180 / 1200 = or %. 5/29/2015 Schweitzer Engineering Laboratories 7 AC Induction Motor Basic Ratings and Characteristics Torque. 5/29/2015 Schweitzer Engineering Laboratories 8 Rated Power Rated mechanical power, Pm (hp or kW) Fullload speed, nr (rpm or rad/s) Full .

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  • Shaft Stress Calculations

    calculations Impact Analysis Direct wheel impact at max speed By using the deflection equation, EI Fl s 192 3 (based upon two fully constrained rod ends), solving for F, and using a basic kinematic equation v v2 2a( s) f o) to solve for s in terms of F, the force of impact can be determined (227505 N) Utilizing shaft stress equations shown below the stress can be determined (400 MPa) When ...

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  • Shaft Stress Calculations

    calculations Impact Analysis Direct wheel impact at max speed By using the deflection equation, EI Fl s 192 3 (based upon two fully constrained rod ends), solving for F, and using a basic kinematic equation v v2 2a( s) f o) to solve for s in terms of F, the force of impact can be determined (227505 N) Utilizing shaft stress equations shown below the stress can be .

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  • How to calculate and minimize the deadtime requirement for ...

    Dead time calculation Calculate proper dead time Appliion Note 8, 200704 Influence of gate resistor / driver output impedance The choice of gate resistor will have significant impact on switching delay time. Generally to say, the larger the resistor is the longer the delay time will be. It is recommended to measure delay time with ...

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  • Power Calculation

    Power calculations become part of the iterative dialogue that leads to the eventual compromise study design, and consideration of the uncertainty of the assumptions and their impact contributes to understanding the robustness of the design. There is no right size for any given experiment. Power calculations are often not appropriate – there may not be a simple .

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  • Braking Calculations

    of a machine (gearbox output shaft) then all calculated inertia values (motor, couplings, etc.) must be referred to this shaft. When referring inertia J B from one shaft with speed ω B to another shaft with speed ω A use: J A = J B ( ω B / ω A)2 Special requirements In certain cases there are other direct considerations to be applied when making braking calculations. In mine hoists .

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  • The Economics of Improving Power Factor |

    Selection of the right motor for the appliion can have a major impact on power factor. Use the highest speed motor possible. Twopole, 3600 RPM, motors have the highest power factor; power factor decreases as the number of poles increases. Size motors as close as possible to the horsepower demand of the appliion. A lightly loaded motor requires little real power and a heavily loaded ...

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