Hai sir good morning you are videos only help me lots during PHE work.. I have one doubt regarding PHE cleaning I was try to cleaning plate with pressure washer after I using pressure washer couldn't clean it properly using a pressure washer.. It is very black and dirty Sir Please recommended something better 🙏
Thanks! Nice video! Do You have some video which explains differential switch and how it works as heat plate exchangers flow security device? If I good understood, differential pressure switch wait until the flow make enough pressure drop and press it. This is information that flow is good. I expect if the temperature of fluid drop that pressure will rise and on the end if it is frozen the pressure drop will be max and the pressure switch will be stile pressed? Where I am wrong? Thanks in advance ..
First of all, excellent videos, it's clear and simple, thanks! What value should we aim for for the wall shear stress? I read in an Alfa Laval document about the best design practices that ideally 50 Pa would be necessary with a minimum of 35 Pa for a fouling applications. Is that right ?
Sorry for the belated reply, yes 50 is a good number and 35 should be considered as a bare minimum for fouling applications. If you are absolutely sure that fouling is not going to be a problem, though, you can live with much lower shear stress
If you mean to increase the heat transfer area, the only way is to add plates BUT you have to take care of the shear stress (see other video), otherwise you can increase the flowrate BUT that increases the pressure drop ....
Hai sir good morning you are videos only help me lots during PHE work..
I have one doubt regarding PHE cleaning
I was try to cleaning plate with pressure washer after I using pressure washer couldn't clean it properly using a pressure washer.. It is very black and dirty
Sir
Please recommended something better 🙏
Thanks! Nice video! Do You have some video which explains differential switch and how it works as heat plate exchangers flow security device? If I good understood, differential pressure switch wait until the flow make enough pressure drop and press it. This is information that flow is good. I expect if the temperature of fluid drop that pressure will rise and on the end if it is frozen the pressure drop will be max and the pressure switch will be stile pressed? Where I am wrong? Thanks in advance ..
More good content. Well explained
Thanks again DT, and if you any suggestion about next topics, please don't hesitate....
How do you find the safety factor ?
First of all, excellent videos, it's clear and simple, thanks! What value should we aim for for the wall shear stress? I read in an Alfa Laval document about the best design practices that ideally 50 Pa would be necessary with a minimum of 35 Pa for a fouling applications. Is that right ?
Sorry for the belated reply, yes 50 is a good number and 35 should be considered as a bare minimum for fouling applications. If you are absolutely sure that fouling is not going to be a problem, though, you can live with much lower shear stress
Hi , can you please suggest to increase the heat transfer rate in plate HE ?
If you mean to increase the heat transfer area, the only way is to add plates BUT you have to take care of the shear stress (see other video), otherwise you can increase the flowrate BUT that increases the pressure drop ....