Published on April 5, 2014
Proposed ModificationsProposed Modifications inin Boiler Feed TankBoiler Feed TankBoiler Feed TankBoiler Feed Tank By: D K Singhal firstname.lastname@example.org
Conventional Boiler Feed TankConventional Boiler Feed Tank The fundamental object of having a boiler feed tank is to ensure uninterrupted supply of boiler feed water to the boiler. email@example.com
Problems with Existing TankProblems with Existing Tank A boiler feed water tank is generally a huge tank suitable of storing sufficient feed water for 3-4 hours of operation. That is why, it cannot be kept pressurizedThat is why, it cannot be kept pressurized (or fully closed) easily and economically. With open tank, flash vapors coming out result in significant energy losses. firstname.lastname@example.org
Problems with Existing TankProblems with Existing Tank Big size results in increased insulation costs. Furthermore, as the surface area is high, heat losses are significant even after goodheat losses are significant even after good insulation. email@example.com
Proposed ApproachProposed Approach Proposed approach uses two separate tanks connected to each other. One tank contains cold makeup water, and needs no insulation.and needs no insulation. The second tank is relatively small, which can be insulated easily and efficiently. firstname.lastname@example.org
Cold Make Up Water TankCold Make Up Water Tank This tank can be made suitable sized to hold adequate make up water in case there is inadequate condensate supply. The elevation of this tank is as per theThe elevation of this tank is as per the boiler designer recommendations, as its head will give sufficient NPSH to feed pump. email@example.com
New Small Hot CondensateTankNew Small Hot CondensateTank The proposed small hot condensate tank is a small tank strategically placed in the circuit. Its capacity should be adequate forIts capacity should be adequate for typically 15-20 minutes of operation. As the size is substantially small, it can be properly insulated. firstname.lastname@example.org
New Small Hot CondensateTankNew Small Hot CondensateTank This tank has an outlet to boiler feed pump near the top. The make up water enters the tank at the bottom.bottom. At extreme top, there is a small venting line that vents flash vapors generated by condensate to the top of cold make up water tank. email@example.com
The SchemeThe Scheme firstname.lastname@example.org
Small TankSmall Tank The small tank is a closed vessel in which hot condensate enters from the top. The condensate is removed from top, thus, hotter condensate goes to boilerthus, hotter condensate goes to boiler feed pump. In case condensate supply is lesser than that required by boiler feed pump, cold makeup water enters from the bottom. email@example.com
Small TankSmall Tank Thus, the cold water enters the boiler if and only if all hot condensate has been consumed. As the make up supply is without a valve,As the make up supply is without a valve, there is no risk of tank becoming empty and dry run of boiler feed pump. firstname.lastname@example.org
Small TankSmall Tank In case the boiler feed pump is off, and condensate is coming from process, the same pushes the colder water at the bottom of small tank back to the mainbottom of small tank back to the main feed water tank through make up line. Even if some hot condensate is pushed back through this line, this returns back when the pump is restarted. email@example.com
InsulationInsulation The small tank and the make up water line (as it may get flooded with hot condensate occasionally) needs insulation. Being this tank much smaller, you canBeing this tank much smaller, you can insulate it well. Typically, the insulation costs are reduced to just 15-20% only. firstname.lastname@example.org
Main Feed Water TankMain Feed Water Tank This way, the main feed water tank remains at lower temperature, and hence no insulation is required. email@example.com
ThankYou.ThankYou. D K Singhal +91-9412713426 firstname.lastname@example.org email@example.com
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Conventional Boiler Feed Tank. The fundamental object of having a boiler feed tank is to ensure uninterrupted supply of boiler feed water to the boiler.
Presentation Title: Proposed Modifications in Boiler Feed Tank. Presentation Summary : Conventional Boiler Feed Tank. The fundamental object of having a ...
Proposed Modifications in Boiler Feed Tank. By: D K Singhal firstname.lastname@example.org. Conventional Boiler Feed Tank. The fundamental object of having a ...
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