Anyone had any experience designing pressure vessel with flat head according to UG-34 Sketch (n)?
If yes, could you share what is your design consideration, especially for the threaded ring design.
Hi, I'm designing my own refrigeration system (NH3) where currently on designing the separator/receiver. I am familiar with pressure vessel and heat exchanger sizing but that as a mechanical engineer scope. Now, I need to do sizing and study of the V/L separator downstream of the expansion...
Dear All,
How do I generate properties (heat properties with enthalpy at each point) in KBC Petro-SIM? Something similar like below.
In KBC Petro-SIM, I don't usually use the heat exchanger for generating these table, I only use the stream function to generate properties since I only want to...
Hi,
In comparison between HVOF/TSA coating and painting, I need to know is there any alternatives to HVOF/TSA like using special painting/coating system?
I see that HVOF/TSA is the ultimate solution when dealing stress corrosion chloride (SCC) when applied on carbon or stainless steel body...
Hi,
I'm unclear of how the actual pressure vessel with U-stamp process? I mean I know that the design will be reviewed and approved by ASME AI, but what are the overall scope of the AI? Does the AI only review and approved the design? or will the AI witness any fabrication process? Some says...
As water boils at around 98.9 degC or 100 degC at 1 atm. During that phase change, the vapor fraction increases and liquid starts to reducing.
Does the increase and decrease of vapor and liquid respectively is called vapor-liquid equilibrium (VLE)?
I need to find the properties of a stream which is in two-phase. I'm only given separate properties i.e. liquid and vapor properties. I need to find the enthalpy for the two-phase mixture from the liquid and vapor enthalpy. See the table below:
I would really like to know how do I find...
I tried looking into B16.5 and ASME VIII Div.1 Appendix 2 and there are no mentioned what are the basis to determine the raised face diameter.
Is there any general rule of thumb to determine the basis of the raised face diameter?
The only close thing I found on ASME VIII Div.1 Appendix 2 is...
Hi,
I'm not familiar with chemical process engineering, I need advise and help on how do I determine the density, enthalpy, thermal conductivity, specific heat and viscosity of separated vapor and liquid phase.
I'm designing heat two-phase stream heat exchanger and I need to use mixture...
Hello,
I never got this question from any client, but aren't we always calculate the duty of each process using Q=m x Cp x dT and this Cp we would usually used average between inlet and outlet? We received one question why are we calculating our duty using ONLY inlet side of the specific heat...
Hi,
I am very new when it comes to boiler system, design and construction but I knew a bit of steam generation.
What interest me is what is the operating pressure of the boiler? Does it the same as discharge pressure of its feed water pump?
For example for heat exchanger, when the inlet...
Hi,
I am really not a chemical engineer but I received one HYSYS data sheet from my client to design a heat exchanger.
Below is what I'm trying to figure out, for example below, the viscosity for liquid and aqueous was below hundreds but when it combines the overall viscosity becomes more...
Guys,
Why is the root area between these two are different?
e.g. for M12 on Table D-5M the root area is 72.396 sq-mm while for for M12-1.75 UNC it is about 84.3 sq-mm.
Why is it different and what are the formula used for establishing TEMA root area? I'm wondering this since day one but just...
Hello,
I need to reconfirm with those that have experience with the said issue. I'm in a never ending argument on the following issue in determining the overall heat transfer coefficient in different condition.
One party says that U_dirty is actually U_service and another party says that it is...
Hi,
If we have a stream that contains diesel and water, which physical properties shall we consider in sizing of heat exchanger?
Do we use water since it's heavier than diesel? or do we use diesel since the viscosity affects the sizing as well?
On the top of my head was that using HTRI, I...
Dear Experts,
Does the joint as per UW-13(d) considered as full penetration weld?
I'm not a weld expert and have no practical weld experience.
All I know is that for it to be considered full penetration weld, the metal attached has to have a root gap which as per UW-13(d) I did see a root gap...
Greetings,
Anyone had any experience operating and designing printed circuit heat exchanger (PCHE). From my understanding this kind of exchanger has the best overall heat transfer coefficient in comparison to other kind of heat exchangers and is the best gas-gas heat exchanger on the market...
Hi,
As title referred, I understand that for a single phase (sensible heat) it is preferred that specific heat method is used to determined the duty. However, when the flow is a slug flow I found that even a minor fraction of vapor would effect the calculated duty when using specific heat...
Hi,
I tried searching for equation or formula on how to obtain the channel velocity between the plate gaps of plate heat exchanger. So many equation I found from dividing mass flow rates into number of plate gaps then divide that by area and then there's where mass flow divide by density*number...
I referred to few articles and catalogs for plate heat exchanger and most of the velocity through the plate (plate hydraulic slots/opening) is between 0.5 m/s to 3 m/s. Anyway know how this velocity is calculated? From my understanding when the fluid enters the inlet port, let say at 3 m/s then...
