In thermal power plants, the heat energy obtained from combustion of solid fuel mostly coal is used to convert water into steam, this steam is at high pressure and temperature. Pdeen bandhu choturam thermal power plant is a project of haryana power generation corporation limited hpgcl. This paper presents a new air flow controller for a thermal power plant. Id,fd,pa fans for boiler in thermal power plant plan and brief description of fans till my last dispatch i completed the topics of boiler structure, boiler pressure parts, rotary air preheater as major equipment. It is owned and operated by the bangladesh power development board, government of the peoples republic of bangladesh. Airpreheater is one of the most important part of power plant for increasing efficiency of the boiler. A conventional coalfired thermal power plant uses slightly more 5 8% of the electricity it produces for the auxiliary load. Failure analysis of induced draft fan used in a thermal. What are the design criteria to keep speed of id fans in. Id fans boiler id fans best id fans suppliers india.
Boiler furnace pressure excursion and set points general term measurement keywords mftmaster fuel trip 1. The induced draft id fans and forced draft fd fans provide control for draft and forced air zoning of fuel burned furnaces of steam generation plant of a thermal power plant. Draft fan control using fuzzy logic in thermal power plant ijeat. Assessment of noise level of a medium scale thermal power plant article pdf available in indian journal of occupational and environmental medicine 103 september 2006 with 964 reads. Scribd is the worlds largest social reading and publishing site. When mechanical ventilation is supplied to these boilers, the heat transfer rate increases.
Increasing energy efficiency of fans in thermal power plants. Assessment of noise level of a medium scale thermal power. Induced draft fan used in thermal power plant as well as waste heat recovery boilers. The book thermal power plants advanced applications introduces analysis of plant performance, energy efficiency, combustion issues, heat transfer, renewable power gen. Induced draft fan is also used to identify the combustion process used in large boilers. Controlling induced draft fan of power plant using labview. Draught fans used in thermal power plants reitz india.
Fans in thermal power plants authorstream presentation. Id fan will take the hot flue gases from furnace via dust collector dust separation system or fume extraction system and wi. Induced draft fanid fan working and location in thermal. Based on the size of the boiler or steamer the rating of the fan used differs and based on the type of air flow and. Ppt thermal power plant powerpoint presentation free. Study the performances of induced fans and design of new induced fan for the efficiency improvement of a thermal power plant. Thermal power plant is also referred as coal thermal power plant and steam turbine power plant. It is the metric most often used in the electric power generation industry to track and report the performance of thermal power plants. Fd fan is used to draw the air from atmosphere to boiler that will create positive pressure inside the boiler. The boiler is one of the main equipment in a coal power plant. A fan operates along a performance given by the manufacturer for a particular fan speed. The proposed controller is evaluated by performing a simulation.
Already present air in furnace is taken out through it. This waste heat can go through a condenser and be disposed of with cooling water or in cooling towers. Normally both fans are used in thermal power plant. Pdf reducing auxiliary power of induced draft fans in coal fired. At fan speed n 1, the fan will operate along the n 1 performance curve as shown in figure 5. In a boiler, combustion of coal takes place with the help of air that comes through an air system. A coal based thermal power plant converts the chemical energy of the coal into electrical energy. Introduction in india 65% of total power is generated by the thermal power stations. I have discussed about the plans and erection sequence of the same. Before going into detail of this topic, we will try to understand the line diagram of electric power generation plant theory of thermal power station.
For a combinedcycle power plant, the auxiliary consumption can be less than 3. The fan performance chart shows performance curves for a series of fan speeds. Induced draft fans induced draft fans id are placed at the outlet of the boiler system and exhaust all gaseous combustion products, or flue gas. The air is pressurized by the aerodynamic lift generated by the fan blades, much like a propeller and an airplane wing. The primary difference between a forced draft and induced draft is, fd fan forces outside air into the heating system whereas id fan draws flue gases from the. Large capacity fan units typically consist of a bladed, rotating impeller enclosed in a stationary casing. Selective catalytic reduction scr and desulfurization processes, dust collection, turbine cooling and exhaust, bus cooling, combined cycle gas turbines including the hrsg, mist collection, and enclosure ventilation. Pdf boiler fan is the main power consumption device in thermal power units and the induced draft fan accounted for the largest proportion. The purpose of boiler in thermal power plants is to.
It is located in raozan upazila of chittagong district 25 kilometres 16 mi northeast from chittagong on the south side of the chittagongkaptai highway. Air preheater in thermal power plant energy technology. Fan a fan can be considered a mechanical device that moves a volume of fluid such as air, gas, or vapor through a pressure driven flow. The heat rate of a plant is the amount of fuel energy input needed btu, higher heating value basis to produce 1 kwh of net electrical energy output. Failure analysis of induced draft fan used in a thermal power plant using coordinated condition monitoring approach. This article provides an overview of fossilfuel power plant ffpp con. Noise reduction techniques for forced draft fan in thermal power. Type of bearings plain bearing plain bearing is simplest type of bearing,comprising just a bearing surface and no rolling elements also known as specific styles bushing, journal bearings, sleeve bearing, rifle bearing. 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. Draught fans used in thermal power plants reitzindia.
The book includes comprehensive listings of operating values and ranges of parameters for temperature, pressure, flow, level, etc of a typical 250500 mw thermal power plant. Id fans are the second largest in rating motor in a thermal power plant after boiler feed pump bfp. List of thermal power plants in india with capacity pdf. Thermal power plant as the title infers is the place of mechanism which converts heat energy into electric power. It gives the list of thermal power plants in india their plant names, commissioned date, plant capacity mw, plant location and operator the organisation under which the thermal power station is operated. List of thermal power plants in india with capacity pdf download consists of all the important major thermal power plants in india. Powergenasia07 149 increasing efficiency of the auxiliary. Normally it is done with the help of a forced draft fan. New method for controlling large fan of thermal power. Draught fans play an important role in thermal power plants by providing critical support to the various process activities related to power generation. Thermal power plant free download as powerpoint presentation. Study the performances of induced fans and design of new. As we know, for a steam boiler to generate steam, combustion must occur, be it any fuel woodcoalrice huskpet cokeldofurnace oil and for combustion to exist one of its three main requirements, is the air. The id fan exhausts flue gases from the furnace and induces combustion air into the furnace by having the furnace operated under negative pressure.
First, a brief introduction of ffpp fundamentals and con. In this work made for the stated purposes, boiler combustion air fans primary air, secondary air and induced draft fans in thermal power plants were examined in. Appropriate for project engineers as well as instrumentationcontrol engineers, the book also includes tables, charts, and figures from reallife projects around the world. The first four units was bifurcated from the total 8 units of the plant. Pa fans, id fans, draught fans, fd fans, sa fans in. Pdf performance analysis of induced draft fan driven by steam. If the waste heat is instead used for district heating, it is called cogeneration. Thermal power stations use 3 to 8 % of their gross generation capacity for auxiliary processes. Erosion one of the most common damage mechanisms associated with power plant fan failure is erosion, which is responsible for serious and costly maintenance. A forced draft fan sucks the air from the atmosphere and blows it into the. Industrial fans for power generation and power plant fans. Air preheater in thermal power plant free download as powerpoint presentation. But id fan is used to evacuate the flue gas from boiler to atmosphere via esp,chimney and that will create negative pressure inside the boiler.
Global and chinese pakistan thermal power plant industry, 2018 market research report thermal power plant industry, 202023 market research report is a professional and indepth study on the current state of the global pakistan thermal power plant industry with a focus on the chinese market. Raozan power station is a gasfired thermal power station in bangladesh. When an inverter power source is used for a forced draft fan fdf in order to save power, the conventional countermeasures do not cover all abnormal states. Although they can sometimes be used interchangeably with centrifugal fans, axial fans are commonly. It burns coal to generate heat that is used to boil the water present to produce steam. Thermal power generation plant or thermal power station is the most conventional source of electric power. Id fan is basically mentioned here for induced draft fan and id fan is always located between dust collector and chimney. Panipat thermal power station is situated at a distance of about 12 km. Thermal power generation plant or thermal power station. Power station or power plants are industrial facility for electric power generation. As the operation of the fan is held by the clearance between the suction cone and the impeller seal ring, we have incorporated all the essential elements for the optimum performance of. The specification covers scope, design criteria, equipment features, quality. Steam power plant configuration, design, and control. How to sew a reusable face mask with filter pocket diy fabric face mask batch sew medical mask duration.
These id fans are supplemented with top of the casing open to view the arrangement of the suction cone and the impeller seal ring. There are 3 main parts with which the manuscript received on april 14, 2012. An induced draft fan is used to suck the flue gases generated in the boiler. It is important to note that the boiler, and steam system, are often prepared and started before the process units in a large plant, because many of the other processes depend on the steam system for startup or ongoing power supply. Air through pa fan is mixed with coal and is sprayed in furnace for combustion. Induced draft fan or id fan is used to create a vacuum or negative pressure in a system like steam boiler or thermal oil heater. The power plant is one of the coal based power plants of hpgcl.
When air or flue gases are maintained above atmospheric pressure. And this requirement is compensated by a forced draft fan. Coalfired thermal power plants systems use several types of process fans. Pdf reducing auxiliary power of induced draft fans in. The auxiliary power used by induced draft fans forms about 0. The rotor system causes the motion of the airgas and the casing. Optimize power plant operations primary air secondary air coal coal handling mills ash ash air heater esp id fans steam turbine lp feedwater heaters hp feedwater heaters coal quality and variability effects on boiler efficiency, availability, auxiliary power demand fan and drive inefficiencies give high power consumption feedwater heater. The energy of a thermal power station not utilized in power production must leave the plant in the form of heat to the environment.
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