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Why does vacuum in steam condenser reduce or drop??

  1-High exhaust temperature: Vacuum drops or maintains at lower side due to high exhaust steam temperature flow into steam condenser. This high exhaust temperature is mainly due to 1-Operation of Turbine at lower loads 2-More clearance in labyrinth seals 3-Not operating exhaust hood sprays 4-More load on condenser 5-Breaking of ejector U loop 2-Low circulating cooling water flow Vacuum in condenser reduces due to inadequate cooling water flow through steam condenser. This is mainly due to; 1-Problems associated with pumps 2-Air pockets in pipe line 3-Leakages in cooling water line 4-Stuck of discharge valve of pump 3-High cooling water temperature at condenser inlet Higher cooling water temperature at condenser inlet results into reduction of vacuum due to poor heat transfer from steam to water 4-Poor heat transfer in condenser Very less or poor heat transfer in steam condenser reduces vacuum to very low level resulting into high exhaust temperature &am

How do you calculate the Power generation in steam Turbines??

Power in the steam Turbines produces at every stage where the steam is taken out, whether it may be bleed, extraction or exhaust steam. As the steam out from the turbine increases the power developed on that particular stage will increase. Power generation phenomenon. Power generation in steam Turbines is calculated based on difference between the heat content of inlet steam & extracted steam. Factors affecting the power generation: Power generation at particular stage increases, when there is more steam flow &vice versa Power generation at particular stage increases when there is more difference between inlet & extraction steam & Vice versa Power develop at particular stage decreases if its extraction pressure increases & vice versa Power developed at particular stage decreases if its extraction temperature increases & vice versa Power developed in steam Turbine decreases if inlet live steam pressure & temperature decrease If steam v

Selected Questions & Answers on Rigging guidelines

1. What is rigging technology? Rigging is the process of using hoists, ropes, pulley, slings, jacks and cranes for lifting, lowering or shifting the heavy objects. 2. Who is rigger? A person who leads or carries out the rigging process. 3. What are the various rigging elements used in power plant? Synthetic and wire ropes Slings Chain hoist/chain block Pulley block Screw and hydraulic jacks Crane Winch machine EOT cranes Derricks…etc. 4. Write a short note on rigging plan. In order to ensure the safety of workers and the equipment involved, any operation involving the use of a lifting item to lift items must be planned thoroughly before being carried out. Rigging Plan Involves: 1. Determination of Task and Job Site Requirements: a. What is to be lifted? b. Who is the in charge person? c. What are the job site requirements? d. What type of lift? Ordinary Lift: Involve the use of basic hoisting equipment directly above the load. The load