How do we compare the energy levels between steam at two different pressures? Assumption is saturated steam.
Example:
If I have two separate steam supply lines, one at 30 bar, and the other at 50 bar, both at the same flowrates and same pipe sizing. Both are NON-insulated, and assuming I only...
This is a very fundamental question which I'm having a tough time explaining to a colleague. Maybe you guys can help.
Question:
What is the total static head in the following piping layout?
To me, the obvious answer is:
Total Static Head = 30m -24m = 6m
regardless of all the bends and...
I have a Centrifugal Pump designed for about 12m3/hr (from purchase information with the supplier). The pump curve is without efficiency lines and as follows:
We are however, running the pump at only 3.5 m3/hr maximum, which based on the above, means it's not even on the curve. Although I...
Hi all, is there a "professional" term for the following structure:
It is used as a support to hold certain loads (parts of heavy equipment etc) after they have been dismantled. It's just a temporary support while waiting for the maintenance work to be carried out. The red part is the main...
Recently, there is a trend towards more usage of biodiesel as alternative fuels in place of (or as a mixture to) the traditional petroleum diesels. With petroleum diesel, the reaction going on in the engine is some form of "burning" under high pressure (compression) and temperature. This burning...
This may seem like a trivial question. On second thoughts, it probably is. And inane too.
But in your opinion, what is the difference between these two phrases "Economically Feasible" and "Financially Feasible"? Or, stuff it & whocares! there's no difference at all?
Obviously I have my views...
In a thermal insulation system, we normally use Aluminium cladding to protect. When installing the cladding, are there any requirements or standards on which type of securing method to use? I prefer screw type instead of rivet, as I believe the maintenance fitters can fix them back more easily...
I know most of you here refer to the UNS codes, but my suppliers normally use a different nomenclature. Examples are 1.4408, 1.4571, 1.4581 etc. Where can I get a full listing or table which describes ALL these nomenclature and match it back to UNS or whatever else codes available in the market...
We intend to install steam tracing on a pump for the purposes of maintaining a certain temperature, which enables the fluid in the pump to remain in liquid form.
What are the considerations for doing the heat transfer calculations for the required steam tracing?
My view is as follows:
- Volume...
We are planning to construct a pipe for overflow (at a given flowrate). As such, we need to determine the minimum diameter for this pipe to cater for this overflow.
Looking at the calculation:
Diameter D = Unknown (to be determined)
Velocity u = Unknown
and Pressure Drop is required input to...
Given a known quantity of gas, say in kg, how do we convert this to "Normal m3"?
I'm quite sure I know this, but just wanted confirmation from you guys.
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My take on this is as follows, rightly or wrongly:
Using Ideal Gas Law PV=nRT:
we have PV=mRT/M
where m =...
Can anyone point me to a website which lists down the standard symbols or icons used in a P&ID for equipment and instruments in a process plant. Example valves (various types), pumps, controllers, etc.
---engineering your life---
Sorry to those who may feel a sense of dejavu. But I do have some questions regarding sizing of orifices for LIQUIDS. Of course, we already have a good solid discussion on the similar topic here Thread: Flow of VAPOR thru a hole , but I didn't want to clog up the thread, so I've created a new...
Hello all. I'm a newbie here, searching for opinions on orifice sizing.
For a vapor through a hole (in this case, saturated steam), I was recommended the following equation (from Crowl/Louvar):
Qm (choked)
= Co A Po SQRT{(k gc M / Rg To)*(2/k+1)^[(k+1)/(k-1)]}
(Equation is provided in the...
