Dear Sir
I am encountering a project that is required us to do the steam and condensate balance caluation under normal condtion / feed variation condtion / start-up condtion / shut-down condtion.
Could you please share any book or related software information allow me to do this calculation...
Dear Professional eng-tips member
I have a project required to size the inlet/outlet pipe size of thermosyphone reboiler.
And, our deisgn guide is written that the liquid vleocty to the reboiler in the range of
2 to 7 ft/s. And, the pressure drop in the line to the reboiler is requried to be...
Dear eng-tips forum members:
My new project plant capacity is scale up from 3000 tons to 6000 tons. And, new project shell and tube heat exchanger duty is scale up from 1000kw to 2000 kw. I wonder I only knew the heat excahger data sheet infromation from 3000 tons plant. How could I develope...
Dear Sir
As we know, steam flow measurements, being compressible, always
require both pressure and temperature compensation.
But, I am confused why a steam flow meter/indincator are installed. (Please see the desuperheater with 3 control loop drawing in the attached post)
Is this steam flow...
Dear Sir
I wonder how to show the right way that the software signal from interlock to shutdwon the motor. Please see the attached drawing.
case 1 : As liquid level's low low, the singal will interlock through the pushbutton to stop the motor, and the pushbutton only be activated as interlock...
Dear Sir
Sorry to bother you this simple solenoid question.
There are two case of pressure control valve.
I wonder why we always pick pressure control valve (case 1) instead of
pressure control valve with solenoid (case 2).
In my poor undestanding about...
Dear Sir
I am sorry to bother you this simple control / alarm set point question.
Case 2 is a simple direct temperature control through a temperature sensor located downstream and send a siganl to the valve controller to increase
or decrease the water supply.
Case 1 is a complex temperatrue...
I am sorry to bother this silly and trivial.
Does it is necessary that process engineer provdie low flow alarm/setpoint for this mass flow meter
considering the following process, "the acetic acid flow into the reactor"?
Also, a client requires the readout on the DCS, process engineer...
Dear fourm members:
I have an overflow tank. There is a overflow pipe
connected on top of the tank, and through gravity
flow to a seal pot.
The service water will flow through a solenoid valve(XV-A) with
level control(LIT-B) to the seal pot.
It is confused me that the interlock in this...
Dear professional
I notice that almost line drain in P&ID (operating / non-operation drain) always
has isolation valves or isolation valve before spectacle blinds (usually closed)
at these drain line from equipmennts or process main lines.
Howver, in hazardous service, such as hydrogen...
