Baseload plant case study results 7 design considerations. The value of design condenser pressure to be measured at 300. The condenser is a very difficult part of a power plant. The improvement in condenser heat transfer, which is just one step in the powerproduction cycle, could lead to an overall improvement in power plant efficiency of 2 to 3 percent based on figures from the electric power research institute, preston says enough to make a significant dent in global carbon emissions, since such plants represent. Intek has established itself as a leader in solving condenser related problems and improving condenser performance. A typical power plant condenser has the following functional arrangement. Generally the colder the circulating water, the more efficient the plant is. A wide variety of power plant condenser tube options are available to you, such as turkey. The 210 mw power plant unit schematic diagrams is presented in fig. Welcome to the most trusted and comprehensive condensers. Steam condensing the challenge condense vacuum steam at a lower turbine back pressure. A surface condenser is a commonly used term for a watercooled shell and tube heat exchanger installed to condense exhaust steam from a steam turbine in thermal power stations. Abstract in a thermal power plant, one of the main parts is considered that is a condenser, which is used to condensate the lowpressure steam into a liquid. Sinha agm netra, ntpc limited abstract the demands placed on the condensers of utility generating units are significant.
Advanced condenser boosts geothermal power plant output. Due to its sheer size, hundreds of penetrations, and dozens of seals, just finding an air inleak can consume several manhours and be very costly. Steam condensation analysis in a power plant condenser. The use of a hybrid steam condenser enables higher efficiency of the steam power plant by lowering condenser steam pressure and. The rheovac instrument measures the mixture of water vapor and noncondensable gases in the vent line. Nttps is modeled and numerically analyzed in solidworks flow simulation. We can get the following conclusions according to the. Ultratech air cooled condenser specification the steam in tubes is condensate by air come from fan. Since condensers for 600 mw and mw units are similar to those of 300 mw units, a good condenser tube arrangement for a 300 mw unit can give guidance for designs of large units. In surface condensers, there is no direct contact between the exhaust steam and the cooling water. High level jet condenser or barometric jet condenser 382016footer text 11 condenser shell is installed at height greater than that of atmospheric pressure in water column i. Aircooled condensers for next generation power plants. Global supplier of steam condensers and related technology. In a power plant, the main feedwater pumps boost water pressure to whatever pressure is needed to feed the boil.
The main steam condenser mc system is designed to condense and deaerate the exhaust steam from the main turbine and provide a heat sink for the turbine bypass system. Regenerative otec systems using condenser effluents discharged from three nuclear power plants in south korea. High vacuum about 735 mm of hg pressure can be obtained in the surface condenser. The condensate is collected in the condenser hot well, from which the condensate pumps take their suction. Modelling and optimization of the direct air cooling power.
Steam condenser for 100mw power plant fossil fuel power plant location. In surface condensers there is no direct contact between the steam and cooling water and the condensate can be reused in the boiler. I didnt have time to really evaluate what alternatives are currently being examined. Performance characteristics of an aircooled condenser. As single pressure or multipressure, depending on whether the cooling water flow path creates one or more turbine backpressures. What is the purpose of a condensate extraction pump. Mezzo technologies makes micro tube heat exchangers. It is a device or an appliance in which steam condenses and heat released by steam is absorbed by water. Pdf analysis of a condenser in a thermal power plant for possible. Patel mihir 450119107 patel mubarak 450119110 patel parth 450119116 patel pathik 450119117 pathan uvesh 450119125 2. Pdf improving aircooled condenser performance in combined. Download 99 steam condenser power plant stock photos for free or amazingly low rates. The condensers shall be designed for heat load corresponding to unit operation for valves wide open vwo conditions, 3% makeup, design condenser pressure.
Although the capital cost and the space needed is more in surface condensers but it is justified by the saving in. Effect of condenser backpressure on power plant heat rate and. Innospin is a world leader in acc technology and can assist you with each area of your project. Micro tube heat exchangers for power plant condensers. Theory and practice, the institu tion of chemical engineers symposium series no.
Parametric analysis of surface condenser for thermal power. For inhibited admiralty or arsenical copper, 18 bwg tubes are normally used. Intek has established itself as a leader in solving condenserrelated problems and improving condenser performance. Utility problem cooling water for condensers is supplied via circulating water pumps at the intake structure.
The result is a condenser specifically engineered to meet the needs of your application. In such condenser even impure water can be used for cooling purpose whereas the cooling water must be pure in jet condensers. Water flows through an inlet pipe to the inlet waterbox, through the tube bundle into the outlet waterbox, and out through the discharge pipe. The power plant has a hybrid dry cooling tower system which is unique in germany hydro electric power generation facility.
Power plant resources are compiled in this industrial portal which provides information on manufacturers, distributors and service companies in the. The condenser tubes and baffles are arranged in such. Advanced condenser boosts geothermal power plant output nrel. For the su2 project we adopted a different approach. What seems in some discussions to be called condensate extraction pumps are known in many power plants as simply condensate pumps. Provide a lowpressure collection point for condensate drains. The solution a niagara wet surface air cooler vacuum steam condenser was designed and manufactured to allow the customer to lower. Condenser optimization in steam power plant springerlink. Whether you wish to create a new air cooled condenser or maintain and upgrade existing equipment, our team of experts can advise you on every step. We produce a wide variety of industrial maintenance solutions, specially designed to satisfy even the most challenging power plant cleaning tasks. In this paper the effects of the condenser design parameters such as turbine inlet condition, turbine power and condenser pressure on heat transfer area, cooling water flowrate, condenser cost and specific energy generation cost are studied for surface type condenser.
Includes highly efficient tube bundles that are scaled to meet the needs of any size power plant. Space restrictions were a major concern for a french power plant evaluating heat exchangers for use as a steam condenser. Condenser in thermal power plants linkedin slideshare. The results are given in the text and also shown as diagrams. Energy balance of a coalfired power plant in condensing. Steam condenser power plant stock photos download 99. Surface condensers are basically a shell and tube heat. Consultant abstract condenser performance and reliability have a significant impact on the electric generation of a. Steam rises from the condenser of an energy plant power plant.
When power production at the geysers geothermal power complex. Recovering this steam as condensate, and returning it to the boiler, is an economical way to recycle heat. Flow rate, condenser, power output, performance analysis, vacuum, energy efficiency introduction 1 the condenser is a heat transfer device or unit used to condense a substance from its gaseous to its liquid state, typically by cooling it. The method presented here enables to evaluate precisely processes occurring in power plant condensers. The exhausted steam from the lp turbines is condensed by passing over tubes containing water from the cooling system. Power plant condenser control system westinghouse electric. Condenser, back pressure, power, heat rate, thermal efficiency i. Condenser is a heat exchanger apparatus and is vital for a thermal power plant because the efficiency of the turbine is fully d increased by enhancing the heat transfer rate of a condenser. Effect of condenser backpressure on power plant heat rate. Condenser design criteria the steam condensing plant shall be designed, manufactured and tested as per hei latest edition. Air cooled condenser thermal power plant system, thermal. A wide variety of power plant condenser options are available to you, such as local service location, condition, and application. Plant life extension keeping condensers clean the humble condenser is among the biggest contributors to a steam power plants efficiency.
In any thermal power plant the major energy loss takes place in the condenser through its cooling water system. Where no river suffices to cool the plant, the cooling tower is the other very difficult part. Performance characteristics of an aircooled condenser under. The main purpose in steam power plant is to generate maximum power at high efficiency. While the 3d models are likely the most accurate option in the absence of extensive proprietary data available to condenser manufacturers, the difficulties of modelling twophase flow, phase change and interaction of. Crosssectional schematic diagram of a power plant condenser for condensing exhaust steam from a steam turbine. Condenser services to improve condenser performance. This condenser is singlepass on both the tube and shell sides with a large opening at the top for the exhaust steam to enter and a hotwell at the bottom where condensate water drips down to and collects. Advanced condenser boosts geothermal power plant output fact. An energy analysis of condenser article pdf available. The condenser performance test and thermal performance.
For power generation, condenser subcooling is undesirable since it results in an increase in turbine. Condenser in thermal power plant linkedin slideshare. The condenser is often referred to as the biggest jobrelated headache by many power plant personnel. An introduction to condensers and auxiliary equipment for. This real process is of particular inter est as it involves. This study analyzes the flow and heat transfer in a power plant condenser for a 300 mw unit. The unit consists of a steam turbine with reheating, steam, generator regenerative feed water heaters, condenser, feed water, condensate and drain pumps and other necessary related equipment. Power plant resources are compiled in this industrial portal which provides information on manufacturers, distributors and service companies in the condensers. Operators did not know if they shouldve left the valves open or not when the tanks of two condensers were emptied of their. Function pdf transport model, and conditional moment closure cmc. Power plants become less efficient when either the condenser tubes are fouled, e. Gland steam condenser posted in industrial professionals. This increases the thermal efficiency of the plant. This book addresses issues related to both coal fired and steam power plants.
Lately, in one of our steam turbines we are experiencing loss of vacuum, which we have attributed to the gland steam condenser malfunction. Condenser w 0 steam power plant q h h out 4 1 the thermal efficiency of the rankine cycle is determine from net out th in in k 1 wq qq where w q q w w net in out turbine, out pump, in deviation of actual vapor power cycle from idealized ones the actual vapor power cycle differs from the ideal rankine cycle, as a result of. Improvement power plant efficiency with condenser pressure. A method for controlling the operation of a steam condenser in a power plant which includes a steam turbine having a steam outlet, the condenser having. Since 1994, intek has been the leading source of new information on condenser dynamics, which has been made possible with the rheovac instrument. Installation of condenser for steam turbine by large block. Heat exchangers offering condensers proven technology to ensure the highest plant performance the condenser is the main auxiliary of a steam. Aspects of failure of condenser tubes and their remedial. Condensers for nuclear, gas, coal and oil power pdf catalogs. Fossil fuel power plants dominate the energy structure in china. The surface condenser is designed to condense and deaerate the exhaust steam from the main turbine and provide a heat sink for the turbine bypass system. Installation of condenser for steam turbine by large block construction 142 site and assembled as the blocks are lifted into position by a crane.
But although a clean condenser can provide great economic benefit, a dirty one can raise plant heat rate, resulting in large losses of generation revenue andor unnecessarily high fuel bills. An air cooled condenser is one of the most common types of dry cooling system and can be used in any part of the world. For stainless steel tubes, 22 bwg tubes are normally used. These condensers are heat exchangers which convert steam from its gaseous to its liquid state at a pressure below atmospheric pressure. Any steam condenser does the task to fulfill mainly two objectives as given below. Where cooling water is in short supply, an aircooled condenser is often used. An aircooled condenser is however, significantly more expensive and cannot achieve as low a steam turbine exhaust pressure and temperature as a watercooled surface condenser. As single pressure or multipressure, depending on whether the cooling water flow. The condenser s shall be designed for heat load corresponding to unit operation for valves wide open vwo conditions, 3% makeup, design condenser pressure. The water gets warmed in the condenser is discharged into the cooling system i. For locations without adequate water, the eerc concept is estimated to offer improved cost and performance over an aircooled condenser without.
Modular steam condenser replacements using corrosion resistant high performance stainless steel tubing john m. The condensate will be collected in the steam collection header and gets the bottom of a structure. Using the operating data of the existing combined cycle power plant, the results of the analysis showed that by cooling the inlet air streams to 15 o c at the compressors, and to 29 o c at the air. Power plant condenser fouling article of interest by dewindia team industrial process plants generate steam for power production and process use. Ive never designed a condenser for a power plant, and i am not currently doing business in this field.
Dear all i am working as a head engineer at a sulphuric acid plant. The condenser also has the following secondary functions. May 29, 2015 the improvement in condenser heat transfer, which is just one step in the powerproduction cycle, could lead to an overall improvement in power plant efficiency of 2 to 3 percent based on figures from the electric power research institute, preston says enough to make a significant dent in global carbon emissions, since such plants represent. In the late 1990s, the pressure of geothermal steam at the geysers was falling, reducing the output of its power plants. It must treat huge volumes of vapour pressure as small a possible, drop as little pressure as possible, drop as little temperature as possible, but transfer a huge heat power. Goodway technologies products have been trusted by power generation maintenance professionals for over 50 years. Condenser tubes are readily available in 14, 16, 18, 20, 22, and 24 gauge. During the accident fukushima nuclear plant in 2011, the operators did not open the valve manually, and emergency system had been activated too late and could not work for long. In pt02 the condenser cleanliness coefficient was dropped to 0. As its the usual the acid production is coupled with power generation steam turbine driven generators. Direct air cooling condenser dacc is appealing for its water saving ability. Modular steam condenser replacements using corrosion.
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