I am selecting the operating temperature for some equipment e.g. pumps inside a building.
The external temperature is 105. The plant building is ventillated mechanically (and no A/C) with intake at +2m and outlet at +15m. There is are several industrial furnaces inside the plant on the ground...
Dear all,
Thanks for your advices.
FYI, it is water (condensate at 85 deg. C) that I am looking at. Sorry it was not stated earlier.
I called the Pump Manufacturer directly to discuss the pump curves, and was offered the possible explainations (which I will re-confirm with the Vendor):
1. to...
I was reading a pump spec + datasheet submission by a vendor. Want to relate the spec data to the curve.
It is one of those instances where a difference of 1 bar makes a difference to the calculation (theoretically).
Else, I may just have shrugged it off..
This is also what I thought.
But when I read the corresponding gpm vs. H, the reported value in the technical datasheet could not be reconciled with the curve.
Datasheet:
Vendor pump data was reported with suction = 1.2 barA, differential head = 103m =~ 10bar.
Discharge would then be 11.2 barA...
Dear all,
The total head (m/ feet) for a given pump curve, is it always in pressure atmosphere or pressure gauge?
Eg. reference the pump curve Total Head H in Page 8. No atmosphere or gauge is stated. So which is it, A or G?
http://www.gouldspumps.com/download_files/ic/bicfamily.pdf
Is there...
Can more knowledgable persons please explain because I am not very familiar with details of valves and its dimensions.
For pneumatic actuated valves, would the face to face dimension be the same as a manual valve for a given type of valve, e.g. butterfly type?
I need the information very...
ASTM C 1609-05, Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (Using Beam With Third-Point Loading)
ASTM B 609/B 609M Standard Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
what a difference a "1" and B/ C...
Hi all,
The tank is just the simplest example I explained to the Supplier where the "technical know-how" and value-add is in the open, i.e. any competent engineer can pick up on his/her own. So what is there to be protective/ secretive of?
Of course there are many other process related black...
Timelord..
It is was clearly specified in the Bid Specification, so imagine my surprise when informed in the meeting.
Ron..
My thoughts exactly, was the design estimated or/ and guessimated?
I have an obligation to ensure safe designs are installed for the plant, not withstanding the Drawings...
Dear all,
May I please check with the Engineers in the USA and in Canada, please. I am currently discussing an offer (scope: Process, mech, EIA and equipment for a dryer plant) with a supplier from Canada.
The supplier informed me that he will NOT submit any design calculations to support his...
Hi JL Seagull:
Thanks for the reply. The contract requirements are sketchy.
I am coming from the angle for the need to provide for test points and test nozzles, e.g. blinded nozzles for temperature measurements (thermowells). How can I obtain information on these standard hookups used for test...
Please suggest information on necessary hook-ups that detail the mech/instrument requirements for a process plant.
Sampling needed for flow, pressure and temperature, and fluids: superheated steam (40 bar/ 410 deg. C), saturated steam (270 deg. C), condensate, feed water, and flue gases...
Dear all,
I apologise for my late reply as I had been travelling.
In any case, for closure to this thread, the mech. design temperature of the system is only 150 deg. C and as such, in order to maintain the warranty on the design of the system and for safety, I have decided to go for...
I have considered to do the mass and energy balance, but as the superheated steam (m1, h1) mixes with the steam in the duct (m2,h2), what volume/ mass of m2 should be considered? 1, 5, 10 m of steam in the duct?
Any consideration on any irrecoverable work done by the SH steam
Typically during running, the turbine (condensing) is at 0.8 bar(a) exhaust. Flow rate is ~180ton/hr. So the condenser load is more than sufficiently provided.
However, surprisingly, and unexpectedly, the turbine drains will be SH at 340 deg. C at the end of the initial heating (Steam...
I am pretty rusty in Thermodynamics, and I have spent time reading my old texts, but no luck to find a classical text-book solution:
What will the resulting fluid properties be if, 1200kg/h SH steam at 0.8 bar(a) and 340 deg. C is allowed to flow into a exhuast steam duct kept at 0.8 bar(a)...
If I take the first diameter (to get the shell plate length required): (610 mm OD - 25.4mm) * 3.14 = 1836.57mm
And the second diameter (to get the shell plate length required): (610 mm ID + 25.4mm) * 3.14 = 1996.17mm
Difference= 159.6mm.
Why is it an additional 500mm?
