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Hi all! Thank you again for all the replies! Very appreciated! stgrme, thank you soo much for the file! It was great to have this for double check! Awsome! georgeverghese, Thanks again for your valuable insights! Good to have this practical and exerienced feedback! Thank you all for the...

Dear georgeverghese, Thank you so much for the feedback, again! I understood perfectly what you've said! So, in practical ways, to get the exact power we must get the manufacturer enthalpy value at the outlet, correct? If we are making a study (and we don't have yet this value), the only way...

Hi all! Sorry for the late reply. Vacations. I've searched an alternativa use case for this analysis. Please see below the turbine data and my calculation, also with my questions: Turbine data: My calculations: Questions: 1) My total real power (underlined in red) is below the power...

pierreick, Correct. Is that. Thanks with the links. MintJulep, So, in your opinion, in practic life, the isentropic value, doesn't gives much of use, correct? We must consider the efficiency given by the manufacturers, is that? georgeverghese, It's exactly that. My issue is not with the...

Hi dear georgeverghese, Here are the values: Turbine inlet: Pressure: 60 bar(a) Temperature: 450 ºC Enthaly: 3304,2 kJ/kg Turbine outlet: Pressure: 3 bar(a) Temperature: 133,2 ºC Enthaly: 2724,9 kJ/kg Steam flowrate: 33,41 ton/h

Hi all! Digging on the subject i found in several situations with real manufacturers data, that the mechanical (shaft) power output is much more higher than the the one that we calculate using the isentropic efficiency. For instance, i can get the following values, as an example: - Isentropic...

Dear MisterE2, Thanks again for the reply! I agree 100% with you. This is a specific phenomena that varies with a ton of things like dimension of the coil, outside fluid properties, etc... So i've searched a lot and in several books, articles and foruns the conclusion was the same that we are...

I don't know what you mean with "upright", but i think it is vertical. What tou say about the convection phenomena is correct and thats why i asked for some help with specific formulas for this application. The tube material is SS 316. Thanks

Hi everyone, I'm ending some calculations of a helical coil immersed in a liquid solution. Inside the tube runs superheated steam that condensates along it. Here i don't have problems, even though we're talking about condensation. My problem is to calculate the heat transfer coef. outside the...

Dear Latexman, Thanks in advance for the reply. Meanwhile, i've already made that. I've putted this post, but i forgot that this could be obtained exactly as you said. So thank you anyway.

Hi, I'm making some heat transfer calculations, to determine a steam coil to heat a phosphoric acid tank. For this i need the coefficient of expansion of this acid. I've searched a lot but i didn't find anything. Does anyone have a value?? Thanks

Please see the pump curvehttp://files.engineering.com/getfile.aspx?folder=53ec56e1-a9b2-46cc-819d-1eb19b32d705&file=PIUSI-PIUSI-EX50-esp.pdf

LittleInch Thanks. Please see the attachment. I've attached also the pump and the filter specifications. Let me tell you i'm only analysing 1 pump, but i will have 3 in parallel and the idea was to put only 1 filter for the whole system...

The only information that i get from the supplier is that the pump has a max. aspiration height of -4m. The difference between the bottom diesel tank and the centerline of the pumps is aprox 400mmm. (i can increase a little bit this) This is in design stage

Hi, i have de following situation: vertical diesel tank with aprox. 7m height above the outlet. next i have a coalescent filter that has a pressure drop of 0,4 bar (clean) to 1,0 bar (change-out). next i have a pump for 50 l/min and 0,6 bar head. it pumps to a consumer at 50m distance and with...

Sorry, i was talking about the nominal flow rate capacity of each pair. Of course, if the 2nd pair in operation mode only works with a flow rate of 100 m3/h the 2st pair will adjust it's working point in the curve, but i was talking about the nominal capacity.

Ok, so let's say that the 1st group of pumps as a volumetric flowrate of 200 m3/h and the 2nd group of 100 m3/h. Now, look at the new diagram (in attachment) where the 2nd consumer was substituted by an open tank. What should be the flowrate going through this line to the opened tank? It...

I forgot to attach the file...http://files.engineering.com/getfile.aspx?folder=d4fdcd01-f0f8-473c-889f-a69e51c1a648&file=Exp_diag.pdf

Hi, I have a specific situation to study but i would like to receive some opinions and i will put the question in a very basic way so that i can start from scratch. I've attached a pdf file with a simple drawing. Assumptions: - Both pair of pumps are working at 50Hz - Each pair of pumps has...

Dear chemlite, Thank you very much for the anwer. It was great! I will look deep in this and try to take a look to that book. Thanks!