Pump Sizing does the hydraulic calculation for a centrifugal pump and estimates differential head, hydraulic power, motor power, NPSH available. Facebook Twitter Chemical Engineering Calculations
Torque is a pseudovector that measures the tendency of a force to rotate an object about some axis. Here we can calculate Torque, Force, Distance.
In order to calculate the power we need to know the brake on time: The power is then given by: This is the average power, the peak power at the onset of braking is double this. Dry Disc Temperature Rise. These calculation are based on that given in the following reference: Brake Design and Safety 2nd edition by Ruldolf Limpert. Single Stop Temperature Rise
If you know any 3 values (Pulley sizes or RPM) and need to calculate the 4th, enter the 3 known values and hit Calculate to find the missing value. For example, if your small pulley is 80mm diameter, and spins at 1000 RPM, and you need to find the second pulley size to spin it at 400 RPM, Enter Pulley1 80, Pulley 1 RPM 1000, Pulley 2 RPM 400, and hit Calculate to find the second pulley diameter.
The rotary vacuum drum filter is used to dewater a slurry, such as a starch or protein suspension. It mainly consists of a rotating drum, which is covered with filter cloth, a vacuum pump and other accessories. The drum is submerged in a tank of the slurry. As the drum rotates, the slurry is sucked through the cloth.
Introduction. Likewise, mechanical rotary power given from a motor must be driven by an appropriate amount of electrical power provided by the drive. Like the energy example, rotary power is provided for by the electrical input power, and, also like the energy example, .
Formula 212 Calculation of the condensation surface area Formula 213 Base pressure of a vacuum system Formula 214 Diffusion coefficient (T) 4 Vacuum generation Formula 41 Compression ratio Formula 42 Pump combination gas flow Formula 43 Backflow conductance Formula 44 Actual compression ratio Formula 45 Pumping speed recursion formula Formula 46
Today's blog entry deals with quick but reliable estimate of the power consumption of vacuum pumps used in the chemical process industry. Some equations are presented below for the benefit of the readers: Liquid Ring (NASH) pump: BkW = *(SF) Rotary Piston Pump: BkW .
A conversion factor may be necessary when using different units of power or torque. For example, if rotational speed (revolutions per time) is used in place of angular speed (radians per time), we multiply by a factor of 2 π radians per revolution. In the following formulas, P is power, τ is torque, and ν (Greek letter nu) is rotational speed.
The power calculation should be made per stage of compression and then summed for all stages connected to a single driver. The stepbystep calculation for shortcut method. a. Calculate the isentropic exponent (k) by Equation 3 using the average temperature defined by T = (T 1 +3T 2)/4. This form of average temperature was defined to obtain better match between the rigorous and shortcut method .
Linear Motion Formulas. Linear distance can be expressed as (if acceleration is constant): s = v0 t + 1/2 a t2 (1c) Combining 1b and 1c to express the final velocity v = (v02 + 2 a s)1/2 (1d) Velocity can be expressed as (velocity is variable)
Rotary Kilns Transport Phenomena and Transport Processes Akwasi A. Boateng AMSTERDAM •BOSTON HEIDELBERG • LONDON NEW YORK •OXFORD PARIS SAN DIEGO SAN FRANCISCO •SINGAPORE SYDNEY • TOKYO ButterworthHeinemann is an imprint of Elsevier
How to Measure Indicated Power in Diesel Engine with Indicator Diagram. This mean height, when multiplied by the spring scale of the indicator mechanism, gives the indicated mean effective pressures for the cylinder. The mean effective or average pressure [Pm] can now be used to determine the workdone in the cylinder. Following calculations can be made to the area of indicator diagram to .
Apr 24, 2017· Mechanical power is power generated by machines like engines, muscles, levers or pulleys. It is distinct from other types of power, such as electrical or nuclear power, which are measured in different ways. To calculate the mechanical power involved in the interaction between two objects, you first need to calculate ...
Calculate the velocity of a nitrogen molecule at 100 °C. (to convert from centigrade to kelvin, add 273). Mean Free Path: The distance a gas molecule can travel (on the average) is a function of total pressure and the diameter of the gas molecules. 2 1 [] 2 Lcm PNd = L=mean free path [cm]
Rotary vacuum drum filter. Rotary vacuum drum filter (RVDF), patented in 1872, is one of the oldest filters used in the industrial liquidsolids separation. It offers a wide range of industrial processing flow sheets and provides a flexible application of dewatering, washing and/or clarification. A rotary vacuum filter consists of a large rotating drum covered by a cloth.
A model has been developed for drum scrubbing which allows selection of geometry and power input. Specific aspects considered are: • Calculation of total static and operating volumes. • Total residence time based on total operating volume. • Solids residence time based on solids operating volume. • Selection of the aspect ratio.
Example No. 2. Piston diameter is 8 cm, rod diameter – 1 cm, and piston stroke length equals to 16 cm. Working shaft rotation speed equals to 85 rpm. It is necessary to calculate required power of electric motor (pump and electric motor efficiency should be taken as, and adjusting coefficient ).
4. For removal of minerals concentrated in the steam drum, a part of the water in steam drum is removed as blowdown water from the bottom of the steam drum. Normally the mass flow rate of blowdown is 13 % of the mass flow rate of feedwater coming into steam drum. 5. In principle, the feedwater coming into steam drum should be saturated water.
Air compressibility factor calculation Air density calculation tutorial Calculation of overall heat transfer coefficient Calculation of insulation thickness for furnace wall Calculation of NM3/hr and SM3/hr for gas flow Calculation of MMSCFD for gas flow LMTD calculation when the formula fails Pressure Relief Valve Sizing Calculations Critical gas flow service Pressure Relief [.]
BASIC· FORMULAS FORMULA FOR: WORD FORMULA: lETTER FORMULA: FLUID PRESSURE PRESSURE _ FORCE (fXJUnds) P F . . FLaN RATE 0 In Gal/ollS/Minule UNIT TIME T (Minute) FLUID POWER IN HORSEPOWER HORSEPOWER = PRESSURE (PSI) x FLOW (GPM) HP =~ 1714 1714 VELOCITY FLUID THROUGHFORMULASPIPING VELOCITY = .3208 x flOW RATE THROUGH
As this is opened, less air is sucked through the separator and the quantity of bagacillo reduces. Air required for bagacillo Pneumatic transport is 6 to M3 of air will be required per kg of bagacillo. The velocity of air in duct line generally considered 2 to 3m/sec.