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  4. why we are using interlock on solenoid valve, if this valve is placed at drain line. and what is use of that valve at drain line with fully automation ???

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  6. Fauling means scaling on the inner or outer side of tube wall..due to increasing the scaling..resistance increase..If you think in common way then You can realize that heat transfer should be decrease by increasing the fauling..and in technical way ,the answers are already given in above comment
  7. Utilities are the various streams to achieve the desired product which may include air system, steam , boiler, process water , cooling system, instrumentation, etc.
  8. Burning of hazardous gasses in refineries are called flaring. The flaring can not burn all types of gasses some are unburnt such as co ,co2 and others...
  9. Over all heat transfer decreases as increase in fouling factor ( scale).Due to increased scale there will be less heat transfer and hence the performance of heat exchanger lower...
  10. Hi can you any presentation topic to present

    1. Tusshar Pawar

      Tusshar Pawar

      merus ring magical solution for scale and rust in heat exchangerr

       

       

       

       

  11. The rate of decomposition of A is given by rA = - k C/(1+KC)2, k= 10min-1 and K = 10 mol/cm3, and C= concentration of A The reaction is to take place in a perfectly mixed reactor. a. Show that there is a possibility for multiple steady states when this reaction is carried out in a CSTR. b. The concentration of A in the feed is to be 1.5 mol/cm3 and conversion at the exit is to be 80%. What should be the average residence time? (Use a graphical method to solve the problem). b. For the Q/V you calculated in part A and the same CAf (i.e.1.5 mol/cm3), find the possible steady states by plotting the net input rate (f1) , net disappearance rate (f2) and accumulation rate (f) on the same figure. c. What is the range of the initial concentrations that will guarantee the desired steady state (80% conversion)? d. Find the unstable steady state concentration and demonstrate its instability by making a ±5 % perturbation around it. This implies that you will have to solve the transient mass balance equation for two different initial conditions . For each one of the cases, plot the concentration, the net input, net disappearance rate and accumulation rate of A as a function of time.
  12. Can anyone solve this: Consider the reaction A -->C + D; this first order reaction is carried out in a batch reactor. What should be the conversion of A if we wish to maximize the overall productivity of C. Define any terms or parameters you may need. (Overall productivity = Number of moles of C produced /batch time which includes reaction time and down time).
  13. Help me solve this.

    Consider the reaction A -->C + D; this first order reaction is carried out in a batch reactor. What should be the conversion of A if we wish to maximize the overall productivity of C. Define any terms or parameters you may need. (Overall productivity = Number of moles of C produced /batch time which includes reaction time and down time).

    1. Shriram Dusane

      Shriram Dusane

      The most important point here is that the reaction is taking place in a batch reactor which means that the overall dynamics of reaction depends on the temperature variation. As per the reaction shown it means that A is decomposing in C and D. Rate of formation of C and D will largely depend on Temperature and Pressure conditions. So the parameter to look for here is the temperature as conversion of A into C is dependent on it.  

  14. how rice starch converts into liquid glucose and malto dextrine powder? explain with reaction deeply...

  15. heyy guys..well Iam nw 2 dis...grup..Iam doing my BTECH frm NIT Arunachal and want 2 do internship in explosives...plzz do share hw nd frm where....

  16. i wanna ask you about the equipment the tubular reactor is it homogeneous or heterogeneous ?
  17. let's make our time valuable by exchanging different ideas about any interesting matter :) 

  18. Green house gas mean the gas which absorb the infrared radiation when they reflecting from the earth so that earth surface temp will increase , more amount of water vapor are collect the IR due to this collection temp of earth will increase so we also consider water vapor in green house gas.but its not more harmful like co, co2.
  19. I am Process/Project Engineer. 

  20. You cannot measure entropy of any system at any point. You can only measure the change in entropy of system by determining the state of system. Only entropy known is the one given by third law of thermodynamics which says the entropy of perfectly crystalline solid at 0 K temperature is zero.
  21. Overall heat transfer which is the reciprocal of addition of reciprocals of individual heat transfer coefficient, decreases as the fouling factor increases. Fouling factor considers the scale formation inside the shell or the tube which is written as 1/hs. Scale formation can be due to sulphides, alkali metal salts, or oxides.
  22. where are the questions?
  23. How fouling affect heat transfer rate? You can ▪ answer this question ▪ Like the best answer ▪ Share to get more answers
  24. How can we measure entropy? You can ▪ Answer this question ▪ Like the best answer ▪ Share to get more answers
  25. How I can know pressure of distillation column if gage pressure enters to distillation column 0.6 and . DC pressure 1 Atm(how its operate)
  26. Hello. How can I know I will get concentration of Ammonia Hydroxide 3% and PH equal 10 when I injection of NH3 gas cylinder in tank of water 1m3. Hent:NH3 gas in cyliner when I open its valve measured by pressure (bar).
  27. In case of centrifugal pump the liquid would keep on revolving in side the pump and would heat up though Electric consumption would be low than if the discharge valve is open.
  28. How is plate heat Exchanger used in ammonia refrigeration system? You can ▪ Answer this question ▪ Like the best answer ▪ Share to get more answers
  29. For a centrifugal pump,if the pump is running and we close the discharge,what is the effect? You can ▪ Answer this question ▪ Like the best answer ▪ Share to get more answers
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