Filter lifetime
Filter lifetime
(OP)
Hi!
I want to know, how can I find out the lifetime of a filter for fluids. Is there a general formula for that, or can it be found out just by practical experiences.
I need to calculate the lifetime of a filter from a conveyor. The filter has an 80-micron mesh openings and the fluid is a water-soluble coolant that flows at 55gpm. The particles are aluminum very small particles that are filtered. From the inside of the filter there are some nozzles that spray water to clean the filter. My duty is to calculate how much this filter will survive. I found on the Internet at http://www.dpsystms.com/filterlife.htm a ‘formula’ that looks like calculating the lifetime of a filter but I guess it’s just for a specified type of filter and I don’t think it can be used on any filters... But, that's just guessing...
So, can anybody help me with some suggestions, opinions or information?
Thank you in advance,
Serban
I want to know, how can I find out the lifetime of a filter for fluids. Is there a general formula for that, or can it be found out just by practical experiences.
I need to calculate the lifetime of a filter from a conveyor. The filter has an 80-micron mesh openings and the fluid is a water-soluble coolant that flows at 55gpm. The particles are aluminum very small particles that are filtered. From the inside of the filter there are some nozzles that spray water to clean the filter. My duty is to calculate how much this filter will survive. I found on the Internet at http://www.dpsystms.com/filterlife.htm a ‘formula’ that looks like calculating the lifetime of a filter but I guess it’s just for a specified type of filter and I don’t think it can be used on any filters... But, that's just guessing...
So, can anybody help me with some suggestions, opinions or information?
Thank you in advance,
Serban





RE: Filter lifetime
I suppose you could find out what similar installations experience but it's still going to be driven by how clean 'your' system is.
It sounds like you hav a back wash system, are you talking about how long you can operate between back wash cycles or until the filter has to be replaced?
RE: Filter lifetime
I was talking about how what's the period the filter has to be replaced. The back-wash system is working continous.
Well, the vendor of the filter is... me:) I mean, the filter is designed here, and it's the first time I'm doing it. So I don't know the dirt loading of the filter; I know the openigns of the filter and that's pretty much all I know. Indeed, the difficult part is esimating the aluminuium particles from the fluid. I don't have any ideea how to do this...
Thanks for your reply,
Serban
RE: Filter lifetime
RE: Filter lifetime
Then, you'd need to look at the efficiency the filter is removing particles from the fluid since that is its primary purpose. Butelja suggested starting with ISO 4572 (I'm not familar with it but he's a well known name here), take a look at it as a start and see what it says. Particle size distribution is really key to selecting the proper filter but it's much more difficult to measure than a simple estimate of the contaminate loading.