why the discharge pressure of ID fan showing negative at fan
running condition.(boiler operating condition.)

Answer Posted / girish_b_k

pressure always flow from high to low pressure .
furnace pressure is high and atmospheric pressure is low

when the damper is opened automatically all the pressure to
the low pressure. the low pressure in the sense it is vaccum
only and negative is only vaccum

Is This Answer Correct ?    4 Yes 10 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Draw a P& ID showing – orifice flange, plate, dp transmitter, isolation & bypass valves and tubing.

1500


PT RTD Range: -200 to 500 degree celsius If I configured in DCS Lower range and Upper range . In face plate it shows red colour due to overa range how was the characteristics look If the temperature is more than operating range. how was the characteristics look . whether its in Resistance vs Temperature curve is Linear or Non linear

1534


can anyone guide me how to get any of the previous year GAIL question papers? are they available? 0n 2nd august i have to take the written test.

1463


what is output of FOUNDATION FIELD BUS transmitter

1694


when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??

1711






A length of steel pipe is used to carry sea water to a desalination plant. An adequate corrosion allowance must be specified and indicated in the piping specification, which affects the _________________________ of the pipe

1784


Which types of quections asked in interview for FORMULATION PLANT (PHARMA)

6218


when placing a vent or drain hole on an orifice plate should you measure from the center of the bore up or down for the vent placement?

1304


Sir,I am going to sit for IOCL written test exam. recently.Can anyone tell me the name of 'Objective type Question Book on Instrumentation Engineering ' which will help me. Pl. mail to bidyut_71@rediffmail.com / bidyut.saha2008@indiatimes.com / bidyut.saha09@yahoo.in

1651


I am manjunath having exp in maintenance of chemical plants,know i want to do a design course INTOOLS,after doing design course can we get jobs in design field.sinve i dont have design exp..

1341


What is 3 element control system

1014


What is sensitivity in vibration probes..?

1034


Drum level tx with GP4 with zero elevation:7300mmh20 on HP and 8050mmh2o on LP as range but on commissioning the tx readiing is max,Why this reading?

1495


3. Differentiate between ultrasonic flowmeter and radar type flow meter.

2435


How to Calibrate Vibration Probe (Axial, Redial) in field

712