Interested to Buy Any Domain ? << Click Here >> for more details...
Could anybody pls give ans of boiler 3 element control system?
- 5 Answers
- 13784 Views
- Qatar Petroleums, I also Faced
- E-Mail Answers
Answer Posted / ecxlsync
in boiler drum level control it uses the three elements
principle wherein it consist of Feed water Flow, actual drum
level and steam flow.
in the feed water line there are two Flow Control Valves (37%and 100%). the 37% is being controlled by single element
(single controller). the SP of single controller is the
actual pressure compensated drum level. if the steam flow
is more than 30% of its designed max flow, drum level
control will shift automatically to three elements control
which is in cascaded mode (two controllers). the output of
primary controller which is compensated by the steam flow
as feed forward control is being fed to the secondary
controller as setpoint for the feed water flow. the output
of secondary controller is sent to 100% FCV to manipulate
the feed water flow.
therefore, 3 elements control is to attain that feed water
flow will be equal to the Steam flow.
| Is This Answer Correct ? | 6 Yes | 1 No |
Post New Answer View All Answers
What is instrumentation control?
HOW TO CHOOSE FREAQUENCY IN FMCW TYPE RADAR INSTRUMENTS. DESIGN BASIS OR DESIGN CALCULATONS ?
What is instrumentation technologists and mechanics?
What is the minimum rating availalbe for weld neck orifice in market?
what is controlling card in dcs? how u measure dcs memory?what is bus in dcs?how u know dcs speed n ehternet speed?
Programmable Logic control.
what is gas metering system? gas chromatograph? and gas compressors?
Specify eight technical requirements that you would consider important, when deciding upon a particular control valve?
How to calibrate radar type level transmitter for interface level? Total liquid(liq.1 and liq.2), level both the liq individually? For. Both the liquid levels how the signal will go from transmitter to dcs? How to calibrate. Single radar 9:26:55 AM for 2 different liquids in a tank?
Give an example where you had aproblem on the job, and tell me how you solved the problem. and the finalvoutcome.
Good evening all I need a small favour regarding reliance paper i wanna probable sample papers(e&i) of reliance. if any of u have any idea about dis then plz mail me back.i belongs to electronics and instrumentation engg.so i need e&i papers. thanking u....
What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.
Hi, Is there any smart plant instrumentation design training institute in Bangalore?
What is 3 selection available when configure the burnout protection for controller
what is insdustrial vibration.who it works. give atleast 2 types of insdustrial vibration
