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As explained in earlier post by zdas and cheute, the water flow is function of several factor. The concept is: the pressure drop (depends on flowrate) of water flowing in the pipe will be equal to available delta pressure in the system. The calculation to calculate the pipe system capacity...

Access is may be one reason... Fire water ring for example. it usually designed to surround your equipment. If it installed above ground, it may block operating or maintenance access to the equipments -rayz-

Hi all, This question may sound very basic, but I need your opinion on this: There is a reciprocating pump, 150 gpm with 25 psig discharge pressure (head: 60 ft) BHP: 3.7 hp and motor selected is 5 hp. The pump maximum pressure it self is 350 psig I use PSV to protect the class 150 line and...

Morten Thanks for quick response, I agree that HYSYS are not reliable on entrainned gases. However my major question has not answered yet. In real life if there is any dissolve gas (entrained gas) in my liquid, did I will have cavitation caused by bubble of gases that is break when pressure...

Effect of Dissolved Gas to NPSH available. Dear all, I would like to know what is the effect of dissolved gas to NPSH available calculation. My liquid is shipping oil. This shipping oil have undergo gas-liquid separation and oil-water separation. However, my HYSYS simulation shows that in the...

Reena, I always consider that the gate valve is not suitable for throtling because of the erosion on the disc. Because of gate valve is less restrictive than globe valve, it need less opening (leads to higher velocity) for the same flow compare than globe valve. However by-pass is rarely use...

CJKrueger, Your saying about flange and instrumentation is absolutely right, and I agree that we can not take the 650 F design temperature thing easily. Joe Wong, thanks for your explanation, it is confirmed my understanding about MAWT. So back to adx question, it can not be say as...

All, I'm sorry but I’m a little confuse here and maybe this will be a little bit out of discussion. First question came over of my head IS DESIGN TEMPERATURE ALWAYS THE SAME WITH MAWT? You might already hear the similar question with term of pressure and the answer is no (because it depends on...

Hienbo, I'm a little bit curious... what is your method in calculating 0.69 MMSCFHr (16.56 MMSCFD) vapor generated in your storage tank? It seem very high in my opinion for tanks emission(or is there in reality?). If you calculated it based on outbreathing calculation as like in API 2000 (i...

Mineng76 Dont forget about operating temperature. Metal impeller withstand with more higher temperature And also what type of fluid pumped. Although polymer/rubber is more applicable in corrosive environment, it might not suitable for some material, depends on what type of polymer you use for...

Stel, following your thread above, depends on what you are trying to do, i think your condition can be accessed using one of this two solution. 1. you might want to use a Pressure Safety valve (PSV) or Pressure Relief valve (PRV)... if you do so, you are referring to wrong API standard. for...

Ehsank, first i will answer your question 1. It is not only required but also a must to consider any piping section for a suction for pump design. This is because one of the important thing in pump design is to calculate the available NPSH (NPSHa). The suction pipe length should be as small...

25362, what do you mean by segregation? you mean that the condensate will not mix with the fluid? The crude oil i'm talking here is mostly consist of water (about 80 to 90%)flowing in turbulent manner. So i think steam condensate generally can be mixed with the fluid. We trying to heat this...

Dear all helpful member, I was trying to upgrading my oil treating facility heating system. We want to heat a crude oil steam using waste steam condensate. Heating is done by injecting the steam condensate into the crude oil stream. Downstream, the mix temperature of oil and condensate will be...

Hello my name barios. I want to ask maybe anyone of you can give me explanation about Load calculation HVAC for building using Form E-20 ( Spread sheet)

Jte, I also don't like the idea for problem that will be arise, including handling and installation... However, i still curious with the heat transfer issues.. regards, -bay-

Dear Colleague and Guru, I would like to get some opinion for natural convection of a finned pipe. I was trying to calculated how much temperature can be dropped by simple natural convection of a pipe which is attached with radial fins. The pipe is 16" dia and the pipe length is about 500 ft...

Xeros.. Thanks for the information. However i find Norsok M-506 standard that could be useful for CO2 corrosion rate calculation. They offer the calculation spreadsheet too :)Just follow this link.. http://www.standard.no/imaker.exe?id=1369 Thanks for all comments... -Rayz

All... thanks for your post... there is always some knowledge i got everytime i start a thread :) dcasto... The 25 psia partial pressure of CO2 is what i'm searching for. However if it not bother you, could you refer me to some document regarding to that value. Anyway thanks for the tips...

Dear all, Like you all know that for H2S service there is a NACE MR-0175 that will determine the requirement of NACE approved material for Sour Service (H2S) depends on H2S partial pressure. My question: is there any similar kind of NACE standard/requirement or else for vapor flow contain...