I am attaching motor nameplate (its an Cl2 compressor)
The running ampere on the meter (it varies with throughput) is now 320A
According to this post (https://www.eng-tips.com/threads/actual-work-380v-vs-460v.91809/post-344509) , total electric kW input will be
=1.732 x 320 Amp x 380 Volt x...
I have found x2 comments made on the use of Equal% & Linear control valves on LinkedIn
I cannot understand the relationship between length of pipe & valve characteristics? Secondly per my operational experience the 2nd point is not true as even at very long Cl2 lines I can see Equal%...
I am attaching images perhaps someone can provide insight as to what may be the reason & how we can avoid it.
The pump in picture are brine pumps as well as vacuum pumps [both are provide by HB company]
I am attaching pdf & SMath sheet that provides a x3 page calculation & perhaps someone can review it.
The background is I have a liquid ring compressor that vendor provides performance curve tested with air media while actually it will be used for H2. From this data I have calculated polytropic...
Cl2 & H2 should never mix ...but I have a situation where I have H2 compressor, H2 seal & Cl2 seal being fed by same water line.
What if x2 events happen simultaneously:
1] Supply water tank become empty so water line is empty
2] H2 seal is CS (carbon steel) & the immersed line can develop...
In this p&id there is a constant feeding of H2 into the circuit. Now only one consumer of H2 gas exists i.e acid furnace, which requires a bit pressurised H2 gas. If there is any tripping at the furnace at that instant vessel pressure will increase abruptly beyond mentioned setpoint. How can we...
Our electrolyser produce a constant (fixed) flowrate of 10m3/hr 32%NaOH. Part of this goes to evaporation unit (for producing 50% NaOH) & part of this goes to storage tank.
In the illustration I had added what is to be achieved. First level control of first tank & flow control to evaporation...
I have gone through a Plate&Frame heat exchanger [PHE] manual by Chinese vendor & I want to share some extracts from it.
The coloured lines I couldn't understand & ask people here to elaborate on these
Following are extracts:
Typical working pressure 10bar
Typical temperature ranges 150C...
I have Chinese valves where from nameplate I can get Cv @100% open & that its Equal%.
Now I generated a spreadsheet model which is fairly simple & then used 'Goal Seek' feature to iterate values such that I get stated Cv at 100% opening.
I am uploading procedure that I followed (this document...
I cannot understand is it just a pilot operated SOV or a Pressure Regulator. If it is SOV I simply cannot adjust back pressure value, but why there are x2 pressure lines attached to solenoid?
ref: https://www.kunag.com/index.php/product/index/g/e/id/5400.html
The process of Cl2 liquefaction is detailed here:
https://www.linkedin.com/pulse/chlorine-liquefaction-performance-monitoring-benchmark-mayank-shukla/
I have seen x2 refrigerants so far being used in Cl2 liquifier R22 & R-509. If the tubular exchanger has some leak ..say the tube side Cl2...
There is a truck loading platform supported by iron columns x4 on each side. The platform will have a FRP roof as well. The whole platform is under high KV cables that are passing above it & we are having static electricity problem at the top section of each column (yellow arrow)
The loading...
I am unable to find a suitable value for Heat of Dilution of concentrated H2SO4. I will share my calculation here as well but first I need this value to be settled.
I have x2 documents
1] 95 kJ/mol https://scilearn.sydney.edu.au/firstyear/exams/chem1101/2008answers/2008-J-13.pdf
2] 71.76 kJ/mol...
Can anyone explain the purpose of these small drums at pump suction. What doesn't the vendor simply use submerged pump suction directly.
https://files.engineering.com/getfile.aspx?folder=9b1839c8-0763-4238-b1cc-417ce129f113&file=Screenshot_20221230_104300_DWG_FastView.jpg...
In this process one of subsystems is : incinerator / superheater / waste heat boiler (aka evaporator) + steam drum & stack
Gas burned is a tail gas from upstream SRU units...
All these equipments can be visualized as follows:
source...
Crane TP-410M while calculating K values for reducer / expander only uses physical geometry of said fitting. The formulas are here:
https://www.enggcyclopedia.com/2019/04/reducer-k-value/
However, in all other fittings (like valves, turns) K value is dependent on Reynolds (or Darcy frictional...
@ https://www.eng-tips.com/viewthread.cfm?qid=286603
Facing similar problem:
While calculating pressure losses (unrecoverable) at PSV inlet (must be less than 3%) ...We have a straight line from steam drum nozzle & PSV is attached via reducer. So X3 components friction losses are to be...
Somebody please audit my understanding of Hazel-Williams eq. for gravity flow & pressure flow both have same form of eq. when it comes to finding velocity:
V = k C (D/4)^0.63 S^0.54
But for pressure S = hf / L https://www.lmnoeng.com/hazenwilliams.php
For Gravity S is the slope of the pipe...
