iphone application slurry pump system ... - keystone pumps · equivalent water head is a corrected...

iPhone Application

Slurry Pump System Calculator

Instructions

Document No. – A1558 Date – 15 September 2014 Revision – 0 Uncontrolled Copy

Slurry Pump System Calculator Instructions

Press + to start a New

Calculation

Enter in Title of the

Calculation.

Press on saved calculation

to open and start

calculation.

Select U.S. Customary or

Metric Units. Note: Units

can be interchanged at any

time.

Select Slurry Properties.

Enter in known properties of

the Slurry.

Slurry Properties Continued.

Enter in Water Temperature

and Atmospheric Pressure.



Select Type of System. Enter in the desired flow rate

and select Discharge Pipe

Properties.

Select Type of Discharge

Pipe. (Example HDPE)

Select Pipe Rating.

(Example 130 psi DR 13.5)

Scroll Down to select pipe

diameter.

(Example 5.584” ID, 6”)

Enter in discharge pipe

angle and static head

requirements.



Select Discharge fittings type

and quantity.

Select Suction Properties. Select Suction Pipe

Properties.

Select Type of Suction Pipe.

(Example Steel)

Select Suction Pipe Rating.

(Example Sch 40)

Scroll Down to select

Suction pipe diameter.

(Example 10.02” ID, 10”)



Select Suction fittings type

and quantity.

Results for Equivalent

Water Head at desired flow

rate. Ensure the Velocity

Check is set to Good.

Select Results

Select System Data for more

details.

Select Slurry for more

details.

Pump System, Flow and

Equivalent Water Head

results.



Details about the Slurry,

Settling Velocities,

Correction Factors, etc.







Select Carrier Fluid for more

details.

Details about the carrier fluid

is provided. Select Discharge for more

details.



Details about the discharge

is provided based on

pumping water.

Details about the discharge

is provided based on

pumping water.

Select Suction for more

details.

Details about the suction is

provided based on pumping

water.

Details about the suction is

provided based on pumping

water.



Q & A

1. What do I do if the Velocity Check says Low?

If the Velocity Check displays Low, go to the Results Page and click on Slurry. The program uses

an average of three settling velocity theories, Durand, Schiller and Wasp. The user can look at

each value separately and decide if one of the settling velocity theories meets their minimum

criteria for settling velocity. Otherwise the user will have to increase the system flow rate, and

(or) decrease the discharge pipe internal diameter, and (or) decrease the slurry concentration,

and (or) decrease the average solid size and (or) change the discharge pipe angle.

2. What is Equivalent Water Head (Pressure)?

Equivalent Water Head is a corrected head (Pressure) used for selecting slurry pumps that have

been tested using water as the medium. Almost all slurry pump manufacturers use water to

test their slurry pumps and publish their tested curves based on water in order to standardize

the results. Each manufacturer has a head (Pressure) and efficiency correction factor which is

applied to each application and adds a margin to the head requirement.

The basic calculation procedure is as follows:

a. Friction Head Calculation based on water (Piping System Only).

b. Corrected Friction Head Calculation based on slurry (Piping System Only).

c. Total Head Slurry (Piping System Only)=Corrected Friction Slurry Head + Static Head

d. Total Equivalent Water Head = TDH Slurry / Pump Correction Factor

3. Should I add an extra margin of Head (Pressure) to the Total Equivalent Water Head results?

We typically do not recommend adding any type of margin to the results because the results

already have margins and estimations built into the formulas and the results are

approximations. If margins are added to the final Total Equivalent Water Head result the pump

will run the risk of running significantly off best efficiency point, which can cause premature

wear to the impeller & casing plus this can create mechanical problems with seals, shafts and

bearings. If the slurry and or process is relatively unknown or if the process requires a more

accurate flow rate then we would suggest using a Variable Frequency Drive (VFD) to control the

speed of the pump/motor to increase or decrease the head as required to maintain a more

accurate flow rate.

4. What if I have multiple pipe sizes in series? (Example: 4” – 500ft to a 6” – 1000 ft)

The current program does not accommodate multiple pipe sizes within one series pipe system.

If the user would like to use the program to calculate multiple pipe sizes we would suggest they

split the system into sections based on the pipe diameters. The user would complete separate

calculations then add the results for each section. Always take into account the settling velocity

and static head for each part of the system.

5. Can I calculate Sewage or Paper Pulp Slurries?

No, the Slurry Pump System Calculator was designed to be used with mineral and sand slurries

or other slurries that have relative characteristics as the above.



6. Can I calculate Non-Newtonian slurries?

No, the Slurry Pump System Calculator only allows the user to use water as the carrier liquid.

Non-Newtonian slurries can be complex and each Non-Newtonian slurry requires in depth

analysis and Rheological study.

7. What if the head requirement is high for the desired pump technology?

If the head requirement is high for the desired pump technology (ex. Submersible Slurry Pumps),

then the user will have to adjust the slurry concentration or piping system to decrease the head

requirement, in some cases this becomes a real application challenge. We would suggest

lowering the system flow rate, and (or) decreasing the static head requirement, and (or)

increasing the discharge pipe internal diameter, and (or) decrease the slurry concentration, and

(or) decrease the average solid size.

Contact Keystone Pumps 1-888-875-3323 P 604-227-3555 F 604-229-0494 [email protected]

Disclaimer

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND

ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE

FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR

TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

© 2011 Keystone Pumps

iphone application slurry pump system ... - keystone pumps · equivalent water head is a corrected...

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