EnergyMix,
I appreciate the apology, and sorry for the counter-strike; I was too aggressive due to taking it the wrong way. Also, I was not trying to be dismissive to the other members at all. I feel bad if it came off that way. As far as an update with this, I'm pretty sure our OSHA...
@ EnergyMix :
Well, reading your post from the other side comes off in a different way. It seemed like you were being very sarcastic and not trying to help at all. I guess we got off on the wrong foot, a lot can be interpreted incorrectly via internet. To be honest though, I'm not really...
@ BigInch :
Yes sir, I'm trying. Thanks for your time and patience!
For an update: I'm working on nozzle selection, looking at PSI needed for area coverage. Next will be bypass constructions w/ PLC control. Fun stuff.
@EnergyMix
It's obvious having an expert come look at my setup, thank you for bringing that to my attention. I do not expect free consultation. If this is the case, 80% of these threads on this forum should be red-flagged. I am a new engineer and don't have all the answers unfortunately. I...
Sorry for the delays! I understand the trade-offs, and VFD's aren't the most ideal scenario. I will take all of this into consideration for sure. We use the pumps for constant flow for process requirements, so it's either a smaller pump, or run w/ VFD and/or bypasses. A smaller pump to...
@ Big Inch : Wow, what a wealth of knowledge; I truly appreciate your time.
I'm feeling stupid again: I can't seem to match my pump with your 4 highlighted points. The most kW I've seen was 71.8, 115.5 A, and 59.2 Hz. The kW in the PDF are much higher.
I am starting to wake up to reality...
@ BigInch & Artisi :
From more researching and getting your inputs, I'm getting to where I need to be even more. The efficiency w/ VFD control does seem problematic. Our pumps are rated for VFD's so that is what I will look into more. I can understand your explanations and will keep this in...
@ BigInch :
There already is a VFD for our pump, but we currently do not use it, only a set-point can be used, but is maintained at close to 95% of its 60 HZ. We have PLC control, just need to make it automatic w/ PID integration. I know there are certain concerns w/ running a VFD from your...
Posting to put this thread on the top!
How do I add extra valves to have in 2 locations to isolate in series and drain in parallel ? Anybody have experience w/ valves that have Interlocking?
Alright guys,
I'm going to assume that this is only radiant heat effects in the surrounding areas. If the cooling chamber is to become enclosed, doesn't seem like it will make the surrounding area much more hotter/more humid. I will assume it to be negligible, only a couple degrees of ambient...
@ Artisi : that was thought about for sure. I'm just trying to work with what we have; of course not trying to go through many rebuilds as we do now though. We do have VFD for the pumps, but are VFD's a good solution for pump protection... for low GPM, turn setpoint % down from the 60Hz ...
Anyone know how to isolate/drain in series/parallel with the setup I have pictured? Am I missing something from the internet link posted by hsbcn? Thank you!
@ nfinit : I have been reading his articles; I'm not quite done yet, but they are very helpful so far. I'm just trying to stay updated with this thread.
@Artisi : The pump has been in place for many years, and going through a lot of rebuilds, most likely to operating out of its operating...
Thank you so much for your responses;
I was assuming only radiant/ambient effects being an enclosed cooling chamber, assuming the chamber is well insulated. I was just wondering if there would be any formulas that I was not aware of... maybe as something simple as TEMP1 of body will increase...
I'm not sure where that information is available on the chart you attached. When the flows start at 1,000 gpm and go up from there for the various pumps, 90 gpm sounds a little small
Okay, that makes sense, but just wondering the basics of why; is it because it will dead-head, causing...
haha, yeah I had a itch that it wouldn't work with that GPM range. Some of our processes require only 90 GPM, so maybe putting a drain pipe at the header to dump back into the tank will help. Say if you put it up to 250 GPM, water can exit to the tank as well as supply the 90 GPM needed...
