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What is the usage of rundown tank in lube oil?
Holding (residence) time requirements for next unit operation. M. Felzien
What is difference between retention time and detention time?
Retention time is the time of passing material through the volume of the drum with determined flowrate :Retention time=V/Qwhich Q : flowrateand V : Volumebut Detention time is the time that materials stay in drum
How can be maintain the mlss in aeration tank?
by drain the sludge of secondary tank from time to time....and one may also maintain mlss by the addition of jaggery ...
What is RRT and RRF in hplc?
In HPLC RRT means Relative Retention Time and RRF is Relative Response Factor
What is reactor period in nuclear engineering?
Reactor period is the time is takes for a reactor's power to increase by a factor of e (2.71828).
How do you calculate the mean residence time in a system?
To calculate the mean residence time in a system, you divide the total amount of time a substance spends in the system by the total amount of that substance in the system. This gives you an average time that the substance remains in the system before leaving.
How do you calculate the residence time of carbon in a given system?
To calculate the residence time of carbon in a system, you divide the total amount of carbon in the system by the rate at which carbon enters or exits the system. This gives you the average amount of time that a carbon atom remains in the system before moving out.
How do you calculate the residence time of water in a given system?
To calculate the residence time of water in a system, you divide the total volume of water in the system by the rate at which water enters or exits the system. This gives you the average amount of time a water molecule stays in the system before leaving.
How do you calculate residence time in a system?
Residence time in a system is calculated by dividing the total volume of the system by the flow rate of material entering or leaving the system. This gives you the average amount of time that a substance remains in the system before exiting.
How do you calculate the residence time of water in a lake?
The residence time of water in a lake is calculated by dividing the volume of water in the lake by the rate at which water flows into or out of the lake. This helps determine how long water typically stays in the lake before being replaced.
How to calculate the amount of time for a ball to reach 3 meters?
You need to know how fast the ball is going, and divide the speed by the distance, which is 3 meters.
The velocity time graph of a ball moving on surface of floor is shown in figure calculate the force acting on ball if mass of floor is 20gram?
To calculate the force acting on the ball from the floor, you need to use Newton's second law of motion, which states that force equals mass times acceleration. Acceleration can be calculated as the slope of the velocity-time graph. Given the mass of the ball, you can calculate the force acting on it using this formula.
What is the formula for calculating residence time?
the hydraulic residence time t is given by t=V/q where V is the volume in the tank and q is the volumetric flow rate. A theoretical residence time can be given by the relationship between concentration and time ln(C)=-(t/tav) where tav in this equation is the residence time.
How can you calculate the average velocity of a bowling ball?
First, find an increment of distance. In between one place and another. Then, time how long it takes for the ball to get from point a to point b.Velocity= Distance divided by Time
What is the optimal loading amount of a ball mill?
Ball milling is an important part of the enamel process. Many novice enamel factories do not know how to use a ball mill. As an enamel frit manufacturer, Nolifrit will briefly introduce how to determine the optimal loading amount of a ball mill. The loading amount of grinding media in a standard mill accounts for 50% of the drum volume. Some older ball mills may only use 30% to 40% of the drum volume for media loading, but the principle is the same. For optimally stacked spheres, the void ratio between uniform spherical media is 26%, and for randomly stacked spheres, the void ratio between uniform spherical media is 36.5%. This makes the void ratio of 50% media loading 13%-18.25%. If some product is added on top of this, the material loading is usually close to 25%. As a starting point, a material loading of 25% usually ensures that there is product between and on top of the grinding media. Too little material will cause direct collision of the grinding media, which will increase media wear and reduce efficiency. Too much material loading will buffer the impact of the media and reduce grinding efficiency. The 25% material loading is just a starting point. The optimal loading must be determined empirically during the grinding operation. Depending on the initial particle size, shape and porosity, many (if not most) materials will become denser as the particle size is reduced and homogenized. The result is a finer but smaller product. The loading must be adjusted based on this volume reduction. Calculate the 25% loading based on the final uncompacted bulk density (if known). Fill the ball mill and run it for a few minutes. Open the ball mill and check the loading. a. If there is too little material, the exposed grinding media can be clearly seen b. If there is too much material, it will be difficult to distinguish the shape of the media C. When the loading is optimal, the media will look like it is covered with snow, and the spherical shape of the grinding media can be vaguely seen During the grinding process, it is necessary to stop the ball mill several times and check the filling of the ball mill. Add materials as needed, record the weight, continue running and check the material status according to the criteria in step 4 above. Please note that when doing this for the first time, the residence time of the material added during the operation in the ball mill is different from the actual required time, so the particle size distribution may deviate or the ball mill needs to run longer. Finally, the total weight of the initial charge and subsequent supplementary materials is the initial charge for the next production run.
What is residence time of gas?
Residence time in the boiler is typically two to five seconds, and the particles must be small enough for complete combustion to have taken place during this time. The ratio of gas occupied to a particular volume is called residence time based on gas.
What is Difference between residence time and space time?
Residence time is the time it takes a particle to complete the cycle. Space time is volume of the reactor over the velocity. If the volume does not change and the velocity remains constant then Residence time = space time, however, if there is a disturbance in the reactor (i.e., change in pressure, temp, ect.), then residence time does not equal to space time.
