Lec11 basic concept of turbine, velocity diagram youtube. So now we will see what happens in steam and gas turbines, what are the. Find materials for this course in the pages linked along the left. But the intent here is simply to outline the way one might proceed, as follows. Turbines revolutionized airplane propulsion in the 1940s, and in the 1990s through today have been a popular choice for new power generation plants in the united states. Lecture 14 chapter 19 ideal gas law and kinetic theory of gases chapter 20 entropy and the second law of thermodynamics now we to look at temperature, pressure, and internal energy in terms of the motion of molecules and atoms. Nocintroduction to abrasive machining and finishing processes. Lecture notes reference materials for teachersinstructors. Elsayed ahmed, aircraft propulsion and gas turbine engines, 2008, taylor and francis crc press. Freely browse and use ocw materials at your own pace.
A power unit like an engine or turbine to convert heat energy into mechanical energy. The ideal jetpropulsion cycle differs from the simple ideal brayton cycle in that the. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Pdf power plant lecture notes chapter6 gas turbines. Open cycle gas turbine power plant, twin shaft arrangement. A generator to convert mechanical energy into electrical energy.
While the gas generator, composed of the compressor, combustor and turbine, is the heart of any gas turbine engine, the overall performance of the propulsion system is strongly influenced by the inlet and the nozzle. Gas turbine engines are widely used to power aircraft because they are light and compact and have a high power toweight ratio. This is especially true for high m o flight, when a. Aircraft gas turbines operate on an open cycle called a jetpropulsion cycle. Gas turbine technology is very important in terms of future worldwide reduction of co 2 emissions. If the liquid is assumed to be at a constant temperature, and the crucible. It is not uncommon to have pressure ratios in industrial gas turbines in the 17 to 20. Lec11 basic concept of turbine, velocity diagram nptelhrd. If worldwide co 2 emissions have to be reduced by 20% in 2020, and by more than 50% in 2050, then gas turbines will surely play a crucial role, owing.
It sucks in air from the atmosphere, compresses it. Over the years, there has been a marked increase in the share of natural gas in prima ry energy production from 10% in 1994 to % in 1999. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Lecture series on steam and gas power systems by prof. Property relationships for pure substances and mixtures, thermodynamic relations, ideal gas mixtures, combustion thermodynamics, gas power cycles, vapour power cycles, refrigeration cycles, reciprocating compressors, compressible flows and steam nozzles.
Bai tc in gas turbines content development of gas turbine types of gas turbines gas turbine cycle gas turbine combustor new gas turbine combustors for clean environment. Nptel syllabus jet aircraft propulsion video course. Oil remains the worlds leading fuel, accounting for 33. A gas turbine is a turbomachine and basically similar to steam turbine regarding its working principle the first turbine to produce useful work was probably a wind mill, where no compression and no combustion exist now a days gas turbine include a compression process and combustion process. Engineering advancements pioneered the development of gas turbines in the early 1900s, and turbines began to be used for stationary electric power generation in the late 1930s. Turbomachinery aerodynamics nptel online videos, courses iit video lectures.
Nptel provides elearning through online web and video courses various streams. How does gas turbine works gas turbine functions in the same way as the compressed ignition engine. Fundamentals of fluid mechanics chapter 12 pumps and turbines. Pdf power plant lecture notes chapter2 steam power. Gas turbine engines derive their power from burning fuel in a combustion chamber and using the fast flowing combustion gases to drive a turbine in much the same way as the high pressure steam. The course contains the details of steam and gas thermal power plants, hydro power plants, nuclear power plants, along with solar, wind and geothermal energy power systems in addition to the direct energy conversion. Gas turbine is used in aircraft propulsion and electric power generation. Lecture series on applied thermodynamics for marine systems by prof. Suitable for combined cycles with steam power plant high power to weight ratio, high reliability, long life fast start up time, about 2 min, compared to 4 hr for steampropulsion systems. Special university course for future engineers lecture notes. Power plant lecture notes chapter2 steam power plant cycles.
The only difference is instead of the reciprocating motion, gas turbine uses a rotary motion throughout. This course provides a simple understanding of the power plant engineering. This section includes select lecture notes for the course excluding lessons on aircraft. The gases expand doing work and finally exhausts outside. Vtu nptel nmeict project progress report the project on development of remaining three quadrants to nptel phasei under grant in aid nmeict, mhrd, new delhi. It is the ratio of indicated power to the shaft power. In the last discussion lecture we talked about compressible flows. Pdf power plant lecture notes chapter4 steam turbine. So now we will see what happens in steam and gas turbines. In the power generation sector, which is the greatest contributor to co 2 emissions, co 2 reduction is currently the driving factor, see fig. Good morning, i welcome you all for the last topic of the course on fluid dynamics and turbo machines, that is steam and gas turbines. Dulari hansdah assistant professor department of mechanical engineering.
It can be used in several different modes in critical industries such as power generation, oil and gas, process plants. Nocinspection and quality control in manufacturing. Lecture notes internal combustion engines mechanical. There has been a decline in the share of oil in primary energy production from 20%. Search by nptel course id, course name, lecture title, coordinator. Tech mechanical engineering course code bme 423 prepared by. Nptel video lecture topic list created by linuxpert. Growth decelerated for all regions and for all fuels. Turbomachinery aerodynamics nptel online videos, courses. We can define the number of molecules crossing a plane per unit time as, where p is pressure in pascals, k is boltzsmans constant, t is absolute temperature and m is the atomic or molecular mass. A steam power plant must have the following equipment.
Lecture 14 ideal gas law and terms of the motion of. Chapter 9 gas power cycles universiti tenaga nasional. Natural gas oil renewables world primary energy consumption grew by 2. Lecture notes on renewable energy sources subject code.