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1/6/2003· One is to keep the reheater pressure low by equipping the cascade bypass with a start-up bypass system (Figure 3). The start-up bypass connects the HP turbine exhaust to the condenser from

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1/1/2017· High pressure HR Relative humidity HRSG Heat recovery steam generator IGV Inlet guide vane IP Intermediate pressure ISO Whereas, the equivalent useful heat received by the low-PR cycle in the area of c-3-4-4′-c requires a higher heat input represented byb

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Now, using the single pressure HRSG that we demonstrated in developing the heat balance in Section 4, we can select the heat transfer tubes necessary to proceed with the thermal design. We are going to select an HRSG unit using 2.000" od tubes, so the following selections will be based on this tube od.

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GE Power’s PressureWave Plus HRSG cleaning can be done in 3-4 shifts over the course of 2-3 days, letting you get back online—and profitable—much faster than other methods. Pressure wave cleaning means reducing your back pressure can not only save money, it can significantly improve your unit’s performance and reliability.

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The air test pressure shall be 2 inches W.G. above the predicted maximum furnace operating pressure. The air shall be admitted to the unit(s) until the test pressure is reached, and then the unit sealed. If the pressure drop does not exceed 5.0 inch W.G. in ten

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Figure 3. Pressure Measurement at a Depth in a Liquid DYNAMIC PRESSURE SYSTEMS Dynamic pressure systems are more complex than static systems and can be more difficult to measure. In a dynamic system, pressure typically is defined using three.

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Every additional half-inch (water column) of pressure drop through a typical F-class HRSG reduces the bottom line by about $100,000 per annum, depending on the price of fuel. An effective cleaning could be expected to regain at least 3-6 inches of pressure drop.

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Pressure = 36.5 psig Quality = 0.00 [Steam Property Calculator] => Specific Enthalpy = 251.8 btu/lbm Feedwater Energy Flow = Specific Enthalpy * Mass Flow [ Feedwater Energy Flow = 4,501 = 251.8 btu/lbm * 16.9 klb/hr] Step 3: Determine Blowdown

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A. Keith Escoe, in Pressure Vessel and Stacks Field Repair Manual, 2008Lifting lugs are connected to the shell with fillet welds. If lifting lugs are welded to a reinforcing pad, and the pad is connected to the shell with fillet welds, then the capacity of the lifting lugs is a function of the strength of the pad fillet welds, as well as the fillet welds attaching the lug to the pad.

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1/8/2014· This 3×1 coined cycle plant operated on a two-shifting schedule experienced a steam leak due to a weld crack in its 18-inch-diamater main steam pipe. Courtesy: Tetra Engineering Group, Inc

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Many other studies focused on the optimization of steam cycle alone such as the study of Vald es and Rapuan [8] who optimized a single pressure level HRSG for TOT equal 545 C. Franco and Russo [9

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1-3 1.1 Introduction Most control devices are loed some distance from the emission sources they control. This separation may be needed for several reasons. For one thing, there may not be enough room to install the control device close to the source. Or, the