You’ve selected your pump. Your duty point falls between the impeller sizes shown on the pump curve, what size should you use? Should you just choose the next biggest one shown on the pump curve? You could, but you will end wasting a lot of money on power. To not waste money on power, we need to work out, accurately, what is the best size impeller to meet our duty.
There may also be times on site where you are looking at changing the duty for an existing pump. You could just throttle a valve and waste power, but a more suitable option may be to install a smaller impeller. Wasted power is wasted money.
Alternatively, you may be planning to use a VSD to operate your pump between a few different operating points. At what speed/s will you need to be operating in order to meet your requirements?
In this workshop we will learn how to use the Pump Affinity Laws to work out the most suitable size impeller, or at what speeds we will need to run, in order to accurately meet our requirements
We will discuss the accuracy and limitations of the Affinity Laws and what sort of corrections we will need to apply to our result.
We will also discuss the impact that changing the speed will have on the NPSHR for our pump.
Note, this workshop is aimed at people who have completed our two day pump training course (Pumping Fundamentals and Advanced Pumping).
Two-hour training workshop to learn how to calculate what size impeller you should use, or at what speed your pump should be running
This is a workshop. You will need to print out the handout notes that will be forwarded to you. You will need a calculator, pen and spare paper.
The course is not a box ticking exercise, or a ‘how can I get the computer to do it for me’ (and understand nothing) exercise. We need to learn how to do it manually first and then learn how to use the computer to do it quicker.
As it is a workshop session, we don’t have an exact time. We anticipate that the session will be between 1.5 and 2 hours long. The exact time will depend on how quickly attendees work through the exercises and the type and number of questions asked.
You will need to log-in prior to the start time.
If the workshop is cancelled by us, you will be eligible to transfer your booking to a future date, if one has been set, or you will be provided with a full refund, at your discretion.
Your booking is treated as fixed and firm. There will be no refunds for cancellations or not logging in on the day. You agree, that once you have registered, you are liable for payment in full whether you attend or not.
