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  • Users: rmw
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  1. rmw

    Can 3 GT's Supply 1 HRSG?

    Have you thought about how to isolate individual CT's from the HRSG when down or maintenance is required? How would you handle fluctuating loads? GT's don't like running at partial load, so prudent operation would be to take one or more off line and leave the ramaning one(s) run at higher...
  2. rmw

    islanding operation of six distributed steam turbine generators in a high voltage network

    Some of the "old school" methodology was just blind stupid luck. I inadvertantly tripped a unit on an islanded systemconsisting of two plants, multiple units at each plant, but only one unit running at each plant that winter evening. The operator at the other plant just happened to be up...
  3. rmw

    FLENDER GEAR BOX REPLACEMENT FOR GE FRAME 5- 60HZ

    Look here: http://www.lufkin.com/index.php/products-a-services/power-transmission/gearing rmw
  4. rmw

    Interpretation of technical text

    As Scotty has noted, combustion turbines come in "hot end drive" and "cold end drive." The words you quote to me say to me that this is a cold end drive machine. The LM-6000 was mentioned in another thread witin the last few days. It is a 'cold end' drive machine. Large "F" frame machines...
  5. rmw

    saturated steam

    I think your temperature measuring element is being wetted by carryover or ME slip, thereby cooling it below the sat temp of the vessel. Is it possible to move it? Or... the 'purified' water is loaded with air or some other dissolved gas so that as was stated much earlier in this thread, there...
  6. rmw

    saturated steam

    So, is the effect you are asking about in the original post the first effect? Define 'purified water'. Are you distilling purified water or making purified water, and if making purified water, what are you distilling. What is the boiling point elevation (depression) of the fluid that is fed...
  7. rmw

    Chromium Carbide Hardfacing for Slurry Transport Pipes

    My main experience with basalt lined pipe was in coal bottom ash slurries and that flow stream is full of clinkers that are not only lava hard, but with lots of sharp edges too. Some of the pumps that pumped the stuff were designed to handle up to 14" solids. It was very tough stuff, not...
  8. rmw

    saturated steam

    Air meaning any form of non condensables. EM, Hopper has asked a legitimate question for this thread. Shoubaki, two possibilities, one is non-condensables where the partial pressure of the water vapor has to be taken into consideratoin or (2) if this temperature sensing device is in fact above...
  9. rmw

    5w30 Engine Oil

    There is an Automotive Lubricant forum in the Automotive section that I think you will find more posters who might be able to help you, not that it isn't a ME subject. The members who lurk there might have it at their fingertips. rmw
  10. rmw

    Chromium Carbide Hardfacing for Slurry Transport Pipes

    Sorry, meant to stick this link in before posting: http://www.cbpengineering.com/pdf/CBP-Basalt_Pipe.pdf rmw I have used beaucoup chrome carbide plate as fan and ductwork liners for gas sterams laden with abrasive materials - and it was just dandy. Those however, were dry processes where the...
  11. rmw

    Chromium Carbide Hardfacing for Slurry Transport Pipes

    Your client would be wise to back up and take a look at basalt lined pipe for this application. rmw
  12. rmw

    Tubesheet with Hub

    EM, Haven't you heard that the ISO in, for example, ISO 900X means "Internet Sourced Only"? rmw
  13. rmw

    Boiler Hot Lay up with tube deflection

    A hot lay up boiler connotes to me a boiler ready at a moment's notice to come on line and take up the slack if, for example, another boiler should trip. Can it have happened that this boiler has been called on to come to full load in a rapid fashion without the SH loops having been properly...
  14. rmw

    Job prospects for 40+ year old entering industry?

    I don't know exactly how to recommend the search terms, but a search of this site would reveal this topic having been discussed many many times. I'd recommend you make some kind of attempt to find some of those older conversations. I know there is information in there that you are looking for...
  15. rmw

    Sanicro 38

    Or post this in the pulp & paper forum. rmw
  16. rmw

    control valve on condensate line after steam-water heat exchanger

    I meant to say "...in series with a trap.." in my earlier post. To add to moltenmetal's comment above, it also allows full steam pressure (which has a temperature relationship) in the Hx rather than a reduced pressure across a control valve at the inlet, and for some Hx's or processes, that is...
  17. rmw

    looking for information to educate myself on different pump applications

    Don't forget Ruhrpumpen's site either. rmw
  18. rmw

    control valve on condensate line after steam-water heat exchanger

    I think it has been repeated several times throughout this thread that it is NOT the right thing to do to have a control and valve in series after a heat exchanger. To do so is a poor design. Are you trying to justify the design? rmw
  19. rmw

    Relationship between pressure and flow is to achieve the optimum heat loss?

    The relationship is this: Q = M(dot)*Cp* delta T. But also, Q = M(dot)*U*A*LMTD. The first is a heat in/heat out book keeping equation and he second is a function of the heat transfer coefficients and the terminal temperature differences. So you need to know how much heat you need to remove...
  20. rmw

    control valve on condensate line after steam-water heat exchanger

    I am familiar with the concept of a control valve on the condensate outlet, but that is not the question that was asked in the OP. Adding a trap in series after the valve makes it into a completely different situation. On the second method mentioned above, if the control valve fails shut...

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