Feedwater Heater Ttd

Side operating pressure leads to a higher TTD and LMTD and therefore a lower heat transfer surface. Lower heat condenser (similar to a feedwater heater). This is possible so long as the lowest pressure in the bypass condenser is … Get Document

General Electric Advanced Technology Manual Chapter 5.1 …
TTD Staff during the actual simulator runs and subsequent staff seminars. Caution is advised when trying to apply these simulator curves to any operating plant. measurement devices down stream of the last high pressure feedwater heater. … Document Retrieval

Welcome Back Regulation Update
PerformanceOpt can detect are feedwater heater TTD, turbine efficiency, condenser cleanliness and air heater leakage. How does PerformanceOpt determine the potential impacts for the identified performance gaps? For each of the performance problems that … Document Viewer

Heater No: TTD ( Design) TTD (Actual) HP- Heater-5 1.14 7.61 HP Heater-4 2.6 0.88 TABLE : 3 Since measured TTD for HP-5 heater is much higher than the design value of TTD, it has raised the turbine heat rate which is around 0.55% in comparison … Return Document

Exhibit A RFP-GM-61451 STATEMENT OF WORK Nixon High Pressure …
Technical Specifications for Feedwater Heater No. 5 and No. 6 3-6 Design 10. Terminal Temperature Difference (TTD), F 0.0 11. Drain Cooler Approach (DCA), F 10.0 12. Minimum design pressure of feedwater side, psig 3375 13. Minimum … Access Document

Optimal Operating Conditions And Configurations For …
Cycles, each with either an air or a water heater, the feedwater stream in the condenser. TTD, speci c entropy generation is minimum for the optimized conditions, and the cycles are sensitive to both the mass … View Full Source

Side operating pressure leads to a higher TTD and LMTD and therefore a lower heat transfer surface. Lower heat condenser (similar to a feedwater heater). This is possible so long as the lowest pressure in the bypass condenser is … Visit Document

Proceedings Of – Подольский городской …
The deaerator is an open-type feedwater heater, where the feedwater, extraction steam and drains of the HP heaters come into a and Terminal-Temperature Difference (TTD) parameters for each LP Heater are listed in Table 5 (Black and Veatch, 1996), while the steam extraction points can be … Fetch This Document

Of TTD or DCA, or to use test a feedwater heater are designed assuming some increase in fouling. If the assumed fouling does not occur, heating surface is consequently too large. Hence, moisture which poses a threat to the … Fetch Content

HEAT RATE IMPROVEMENT PROGRAM – Development Academy Of The …
Top HP Heater TTD 5 deg F .10% Other heaters TTD 5 deg F .03% BOILER COMPONENTS Coal moisture (12,000 Btu/lb Coal) 1% .10% feedwater heaters and steam cycle. Numerous opportunities for improved performance are also available at the boiler. … Get Document

… Access Doc

Study Of Improvement In Boiler Efficiency Through …
Which transfers heat from the stack gases to the incoming feedwater. Typically, on a high pressure water (TTD). 1. Introduction Economizers T4= Air heater at FD inlet duct 30 0C 300C … Access Full Source

Special Report – Powering Portable Power
feedwater heater and presence of heavy wall tubing,representing a very substantial savings to AEP over replacement heaters. The TTD (terminal temperature difference) and the satura-tion temperature of the heater (based … Visit Document

High Pressure Feedwater Heater Increase of high pressure feedwater heater differential pressure Boiler feedwater pump performance reduction Increased Drain Flow TTD No Change DCA Decrease Low Feedwater outlet temperature … Fetch Doc

C H A P T E R T W O – Home – University Of Tulsa
An open feedwater heater is a FWH in which a small amount of steam mixes directly with the feedwater to raise its temperature. Steam drawn from a turbine for feedwater heating or other purposes is called extraction steam. TTD = Tsat – Tfw [R | K] … View Full Source

Feedwater heater with Drain cooler and Desuperheater –TTD=Terminal temperature difference C=Condenser DC=Drain cooler DS=Desuperheater DS Bled steam Feedwater T L + TTD DC C C DC Steam FW Condensate Feedwater heater with Drain cooler FW Regeneration cycle Reheat … Read Content

Leave a Reply

Your email address will not be published.