i agree with artisi given the complexity of your system. since the feed and discharge piping configurations will be different, even slightly, for each pump a theoretical approach will not provide actual operating results. if you have the ability, run and log flow and input power results for...
what you say is true, however there are a couple of factors that support the recommendation for the use of vfd's and multiple pumps. yes, this could be a rough and ready system however the tank size required and the flow rates, up to 300cum/hr (1300usgpm), would indicate the system may be used...
moiz19670309,
another and maybe more economical (environmentally friendly) option is to use three pumps, one each of 50, 100, and 160 cum/hr. have all three pumps on variable frequency drives. the pumps would use a downstream pressure sensor and control logic to determine the number of pumps...
extremechanical,
my suggestion is that you follow the recommendations by littleinch. the other posts have various errors in the relationship between the pump and system. basically the pump will add energy based on its performance curve balanced with the system requirements, the intersection...
sinectica,
in order for a centrifugal pump to operate without recirculation it must be eccentric. if you are referring to an involute pump it will also be eccentric. if you are having problems at the cutwater that are a result of wear, not corrosion or pitting, then you most likely have a pump...
santu398
you provide very little information on your system and what you are pumping.
basically, the pump will react to the system conditions. for your required flow rate and system configuration use bernoulli's equation to calculate the total head on the discharge side of the pump and the...
this is an extremely wide range of flows for a pump. at this flow rate and head i assume it's a centrifugal pump. also consider installing multiple parallel pumps, 2 or 3, of various sizes to meet the system demands. it is correct that the discharge pipeline will also cause you problems with...
in addition to the reasons stated above, a pump will run with greater stability and predictability when operated left of the bep, than to the right of bep. now here's something to consider; as the pump wears it will operate left of where it operated when new. if you operate just to the right...
wrd2032
any kind of throttling or recirculation of flow to match pump performance wastes energy. also, most vfd's are efficient down to about 60% of 60Hz, i.e. 36Hz. to maximize the efficiency of your existing pumps trim the impellers so that the vfd operates between 50% and 100%. the best...
If you can, upgrade to V.14 of Algor. It now comes with a scaled down version of Alibre solid modelling software. This will be much easier than trying to do it in Superdraw.
I use Solidworks 2004 and Algor FEA with an InCad add-in that automatically launches the Algor software and creates the mesh. I am pretty sure there is a similar add-in for Pro/E. Talk to Ed Simmons at Algor, he will be able to give you more information. The software is easy to use and the...
I use Solidworks and Algor FEA. The Algor FEA has an InCad module that will launch the software and create the mesh directly from Solidworks. It is relatively easy to use.
I have been looking at doing a similar analysis for a trailer. I think that using plate elements would give the desired results. A 3D analysis using bricks would be far too costly from a standpoint of time. Using beam elements would be fine for the sizing of the frame and lateral members...
