Boiler

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  • Balancing Act - Simple Techniques for Steam Header

    Apr 30, 2013 · 0.50. An industrial steam distribution system with multiple headers, turbines, boilers, and reducing valves is managed with header control strategies that mitigate upsets, increase power generation, and reduce clean condensate makeup. Effective use of override, anti-windup, and TG governor interface strategies insure header stability.Learn More

  • Steam System Components | CSI Heat

    Steam exits the boiler through piping referred to as the steam header. The header also serves as a reservoir that feeds steam to the individual heating circuits. The steam header must be large enough to virtually eliminate pressure drop between the boiler and the beginning of the circuit.Learn More

  • Boiler room steam distribution header - Boiler and

    Sep 09, 2003 · The header pressure should be a constant 125. There's no way you can (or should) have the velocity of steam in the header the same as the steam leads. New headers are often oversized initially anyway, to allow for future additions. This also gives water droplets that have been carried over, out of the boiler, a low velocity area to drop out of Learn More

  • Drop header or not — Heating Help: The Wall

    Boiler Headers, Manifold Headers, Boiler Speed Headers Learn More

  • What is a Drop Header? - Heating Help

    Jun 24, 2014 · Wet steam does not do much except cause water hammer. The best results are accomplished by "drying" the steam at the header (by increasing the steams "travel" distance at the boiler). That's usually tough to do in a low basement, so a drop header can give you the best of both worlds. Bob Young replies: As Dave pointed out, extra dry steam is a Learn More

  • Water Handbook - Steam Purity | SUEZ

    Steam purity should not be confused with steam quality. Steam quality is a measure of the amount of moisture in the steam. It is expressed as the weight of dry steam in a mixture of steam and water droplets. For example, steam of 99% quality contains 1% liquid water. Carryover is any solid, liquid, or vaporous contaminant that leaves a boiler Learn More

  • Drop header or not — Heating Help: The Wall

    Jun 13, 2011 · They are a very good thing for a steam boiler, especially if the existing supply/feed is close to the recommended height above the water line in the boiler. Your supplies off the top of the boiler can go up much higher to the ceiling and back down to the header which has the equalizer and feed the system off the header. Keeps the steam drier.Learn More

  • Steam Headers and Off Takes | Spirax Sarco

    Jun 24, 2014 · The drop header keeps water from getting into the system, and allows for more expansion and contraction of boiler sections. This results in "dry" steam being fed to the system, which is steam at its most potent. Dave replies: Wet steam does not do much except cause water hammer. The best results are accomplished by "drying" the steam at the header (by increasing the steams "travel" distance at the boiler).Learn More

  • How NOT to Design a Steam System - The C&S Companies

    Many Steam boilers are undersized for the actual NET load Determine the BTU required for the heat load Add losses for the piping, distribution, etc. Correct for the operating pressure of the boiler Correct for the feedwater temperature of the Main Steam HeaderLearn More

  • ALL YOUVE EVER NEEDED TO KNOW ABOUT STEAM BUT …

    this header is first reduced in pressure to 10 psi and then cooled down with water injection as close as possible to the saturation temperature for 10 psi steam of 240°F. Your lumber quality will improve immensely, your boiler will be loafing, your fuel bill will drop dramatically. As I said at the beginning, steam is an amazing substance.Learn More

  • U.S.C.G. Merchant Marine Exam Third Assistant Engineer

    The main steam stop bypass valve is used to _____. o (A) supply auxiliary steam when the main steam stop is closed o (B) cross-connect two steaming boilers o (C) isolate the main steam stop for repairs while steaming • (D) gradually increase the pressure and temperature of the main steam …Learn More

  • Steam Velocity — Heating Help: The Wall

    Just as an example, one of my most popular steam boiler installs is a Weil McLain EG-40, 125,000 BTU and 325 sq ft steam. I run two 2-1/2" risers a minimum of 30" above the boiler jacket or higher depending on space. The risers turn into a 3" drop header, then I'll put a 3"X12" long nipple before the first take off. Most risers end up around 36 Learn More

  • Hartford Loop - Mass Engineers, Steam Engineering, Steam

    A Hartford Loop is an arrangement of piping between a steam boiler's header and its gravity-return piping. The end of the header drops vertically below the boiler's waterline and connects into the bottom of the boiler. We call this pipe the "equalizer" because it balances the pressure between the boiler's steam outlet and condensate-return inlet.Learn More

  • Section 23 52 39 - FIRE-TUBE BOILERS

    At Maximum Required Output: On each fuel at site altitude, with and without economizer (if applicable) in service, at 15 percent excess air. Data must include fuel and steam flow, boiler flue gas outlet temperature, economizer (if provided) flue gas outlet temperature, steam quality, boiler efficiency, furnace pressures, and predicted boiler radiation and unaccounted losses, feedwater and flue Learn More

  • Pipe Sizing Steam Supply andCondensateReturn Lines

    steam main to the new unit. The use of the tables is best described by solving a typical problem: Assume a boiler operates at a steam pressure of 15 psig and is supplying a 300-ton steam absorption machine which requires a minimum operating pressure of 12 psig. There is a 2 psig pressure drop along the steam …Learn More

  • ENHANCED MULTI AGENT BASED INDUSTRIAL PROCESS …

    one boiler causes a drop in steam header pressure, which produces "boiler swell" in the untripped boilers. These effects will shut down all the untripped boilers through drum level high protection. The variables that affect the boiler swell are the rate of fuel firing to the boiler and the rate of …Learn More

  • Steam Piping Best Practices | CleanBoiler.org

    In order for steam system controls to function properly, they must be installed properly. In the photo to the right, a green-headed PRV (Pressure Reducing Valve) has been installed to reduce the higher pressure steam from the main steam header, to a lower pressure for …Learn More

  • Drop header on residential steam boilers | Plumbing Zone

    The main observation is that this design of distribution header does not allow the boilers to share the load equally. The aim should be that the pressure drops between each boiler outlet and the header off-take to the plant should be within 0.1 bar. This will minimise carryover and help to prevent overload and lockout of boilers.Learn More

  • Balancing Act - Simple Techniques for Steam Header

    Jun 24, 2014 · I think the bottom of the steam header should be a minimum of 24 inches above the top of the boiler jacket, and more than that, if possible. The higher the header, the drier the steam will be. Pros who do steam know this. Many of them use a Dead Man trick called a drop header.Learn More

  • How NOT to Design a Steam System - The C&S Companies

    Many Steam boilers are undersized for the actual NET load Determine the BTU required for the heat load Add losses for the piping, distribution, etc. Correct for the operating pressure of the boiler Correct for the feedwater temperature of the Main Steam HeaderLearn More