Power plant engineering
 | This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)
|
Power Plant Engineering or Power Plant Engineering (English: Power Plant Engineering) abbreviated as TPTL is a branch of the field of Energy engineering , and is defined as the engineering and technology required for the production of an electric power station.<ref name=":02">Weisman, Joel (1985). modernpowerplant00weis Modern Plant Engineering. Englewood Cliffs, New Jersey 07632: Prentice -Hall, Inc. ISBN 0-13-597252-3. {{cite book}}: Check |url= value (help)CS1 maint: location (link)</ref> Technique is focused on power generation for industry and community, not just for household electricity production. This field is a discipline field using the theoretical basis of mechanical engineering and electrical. The engineering aspects of power generation have developed with technology and are becoming more and more complicated. The introduction of nuclear technology and other existing technology advances have made it possible for power to be created in more ways and on a larger scale than was previously possible. Assignment of different types of engineers for the design, construction, and operation of new power plants depending on the type of system being built, such as whether it is power generation fueled fossil, NPP, hydropower plant, and solar power plant.
History
Power plant engineering got its start in the 1800s when small systems were used by individual factories to provide electrical power. Originally the only source of power came from DC, or direct current, systems.<ref name=":4">Center, Copyright 2014 Edison Tech. "History of Electrification Sites". www.edisontechcenter.org. Retrieved 2018-04-18.{{cite web}}: CS1 maint: numeric names: authors list (link)</ref> While this was suitable for business, electricity was not accessible for most of the public body. During these times, the coal-powered steam engine was costly to run and there was no way for the power to be transmitted over distances. Hydroelectricity was one of the most utilized forms of power generation as water mills could be used to create power to transmit to small towns.<ref name=":4" />
It wasn't until the introduction of AC, or alternating current, power systems that allowed for the creation of power plants as we know them today. AC systems allowed power to be transmitted over larger distances than DC systems allowed and thus, large power stations were able to be created. One of the progenitors of long-distance power-transmission was the Lauffen to Frankfurt power plant which spanned 109 miles.<ref name=":0">Center, Copyright 2015 Edison Tech. "Lauffen to Frankfurt 1891". www.edisontechcenter.org. Retrieved 2018-04-18.{{cite web}}: CS1 maint: numeric names: authors list (link)</ref> The Lauffen-Frankfurt demonstrated how three-phase power could be effectively applied to transmit power over long distances.<ref name=":0" /><ref name=":1">"What are Power Plants?". Brighthub Engineering. Retrieved 2018-04-18.</ref> Three-phase power had been the progeny of years of research in power distribution and the Lauffen-Frankfurt was the first exhibition to show its real potential for future me=":0" />
The engineering knowledge needed to perform these tasks enlists the help of several fields of engineering including mechanical, electrical, nuclear and civil engineers. When power plants were up and coming, engineering tasks needed to create these facilities mainly consisted of mechanical, civil, and electrical engineers.<ref name=":4" /> These disciplines allowed for the planning and construction of power plants. But when nuclear power plants were created it introduced nuclear engineers to perform the calculations necessary to maintain safety standards.<ref>"What Is Nuclear Engineering?". Live Science. Retrieved 2018-04-20.</ref>
Governing principles
First Law of Thermodynamics
In simple terms, the first law of thermodynamics states that energy cannot be created nor destroyed; however, power can be converted from one form of energy to another form of energy. This is especially important in power generation because power production in nearly all types of power plants relies upon the use of a generator.<ref name=":1" /> Generators are used to convert mechanical energy into electrical energy; for example, wind turbines utilize a large blade connected to a shaft which turns the generator when rotated. The generator then creates electricity due to the interaction of a conductor within a magnetic field. In this case, the mechanical energy generated by the wind is converted, through the generator, into electric energy. Most power plants rely on these conversions to create usable electric power.<ref>"How Electricity Works". HowStuffWorks. 2004-05-28. Retrieved 2018-04-20.</ref>
Second law of thermodynamics
The second law of thermodynamics conceptualizes that the entropy of a closed system can never decrease. As the law relates to power plants, it dictates that heat is to flow from a body at high temperature to a body at low temperature (the device in which electricity is being generated).<ref name=":1" /> This law is particularly pertinent to thermal power plants which derive their energy from the combustion of a fuel source.<ref name=":02" />
Types of power plants
All power plants are created with the same goal: to produce electric power as efficiently as possible. However, as technology has evolved, the sources of energy used in power plants has evolved as well.<ref name=":02" /> The introduction of more renewable/sustainable forms of energy has caused an increase in the improvement and creation of certain power plants.<ref name=":02" />
Hydroelectric power plants
.jpg)
Hydroelectric power plants generate power using the force of water to turn generators. They can be categorized into three different types; impoundment, diversion and pumped storage.<ref>"Types of Hydropower Plants | Department of Energy". www.energy.gov. Retrieved 2018-04-18.</ref> Impoundment and diversion hydroelectric power plants operate similarly in that each involves creating a barrier to keep water from flowing at an uncontrollable rate, and then controlling the flow rate of water to pass through turbines to create electricity at an ideal level. Mechanical engineers are in charge of calculating flow rates and other volumetric calculations necessary to turn the generators to the electrical engineers specifications. Pumped storage hydroelectric power plants operate in a similar manner but only function at peak hours of power demand. At calm hours the water is pumped uphill, then is released at peak hours to flow from a high to low elevation to turn turbines.<ref>USGS, Howard Perlman. "Hydroelectric Power: How it works, USGS Water-Science School". water.usgs.gov. Retrieved 2018-04-18.</ref> The engineering knowledge required to assess the performance of pumped-storage hydroelectric power plants is very similar to that of the impoundment and diversion power plants.
Thermal power plants
.jpg)
Thermal power plants are split into two different categories; those that create electricity by burning fuel and those that create electricity via prime mover. A common example of a thermal power plant that produces electricity by the consumption of fuel is the nuclear power plant. Nuclear power plants use a nuclear reactor's heat to turn water into steam.<ref name=":02" /> This steam is sent through a turbine which is connected to an electric generator to generate electricity. Nuclear power plants account for 20% of America's electricity generation.<ref name=":2">"Thermal Power Plant Classification". Retrieved 2018-04-18.</ref> Another example of a fuel burning power plant is coal power plant. Coal power plants generate 50% of the United States' electricity supply.<ref name=":2" /> Coal power plants operate in a manner similar to nuclear power plants in that the heat from the burning coal powers a steam turbine and electric generator.<ref name=":02" /> There are several types of engineers that work in a Thermal Power Plant. Mechanical engineers maintain performance of the thermal power plants while keeping the plants in operation.<ref name="Wagner">Wagner, Vivian. "Engineers Who Work With Solar". Houston Chronicle. Retrieved April 20, 2018.</ref> Nuclear Engineer generally handle fuel efficiency and disposal of nuclear waste; however, in Nuclear Power Plants they work directly with nuclear equipment.<ref name=":6">"Nuclear Engineers". CollegeGrad. Retrieved April 20, 2018.</ref> Electrical Engineers deals with the power generating equipment as well as the calculations.<ref name=":5">"What Does An Electrical Engineer Do?". Sokanu. Retrieved April 20, 2018.</ref>
Solar power plants
Solar power plants derive their energy from sunlight, which is made accessible via photovoltaics (PV's). Photovoltaic panels, or solar panels, are constructed using photovoltaic cells which are made of silica materials that release electrons when they are warmed by the thermal energy of the sun. The new flow of electrons generates electricity within the cell.<ref>"Solar Power Has Benefits as a Source of Alternative Energy". 2009-10-09. Archived from the original on February 17, 2017. Retrieved 2018-04-18.</ref> While PV's are an efficient method of producing electricity, they do burn out after a decade and thus, must be replaced; however, their efficiency, cost of operation, and lack of noise/physical pollutants make them one of the cleanest and least expensive forms of energy.<ref name=":02" /> Solar power plants require the work of many facets of engineering; electrical engineers are especially crucial in constructing the solar panels and connecting them into a grid, and computer engineers code the cells themselves so that electricity can be effectively and efficiently produced, and civil engineers play the very important role of identifying areas where solar plants are able to collect the most energy.<ref name="Wagner"/>
Wind power plants
Wind power plants, also known as wind turbines, derive their energy from the wind by connecting a generator to the fan blades and using the rotational motion caused by wind to power the generator.<ref name=":3">"How Do Wind Turbines Work? | Department of Energy". www.energy.gov. Retrieved 2018-04-18.</ref> Then the generated power is fed back into the power grid. Wind power plants can be implemented on large, open expanses of land or on large bodies of water such as the oceans; they rely on being in areas that experience significant amounts of wind.<ref name=":02" /> Technically, wind turbines are a form of solar power in that they rely on pressure differentials caused by uneven heating of the Earth's atmosphere.<ref name=":3" /> Wind turbines solicit knowledge from mechanical, electrical, and civil engineers. Knowledge of fluid dynamics from the help of mechanical engineers is crucial in determining the viability of locations for wind turbines.<ref>"Mechanical Engineer". Energy Efficiency and Renewable Energy. Retrieved April 20, 2018.</ref> Electrical engineers ensure that power generation and transmission is possible.<ref name=":5" /> Civil engineers are important in the construction and utilization of wind turbines.<ref>"What does a Civil Engineer Do?". Sokanu. Retrieved April 20, 2018.</ref>
Education
Power plant engineering covers a broad spectrum of engineering disciplines. The field can solicit information from mechanical, chemical, electrical, nuclear, and civil engineers.
Mechanical
Mechanical engineers work to maintain and control machinery that is used to power the plant.<ref name=":6" /> To work in this field, mechanical engineers require a bachelor's degree in Engineering and license passing both the Professional Engineering Exam (PE) and Fundamental Engineering Exam (FE). Mechanical engineers have additional roles that are needed to be considered based on their careers. When working in thermal power plants, mechanical engineers make sure heavy machinery like boilers and turbines, are working in optimal condition and power is continually generated.<ref name=":6" /> Mechanical engineers also work with the operations of the plant. In nuclear and hydraulic power plants the engineers work to make sure that heavy machinery is maintained and preventive maintenance is performed.
Electrical
Electrical engineers work with electrical appliances while making sure electronic instruments and appliances are working in company and state level satisfaction.<ref name=":5" /> They require licenses passing both the Professional Engineering Exam (PE) and Fundamental Engineering Exam (FE). It is also preferred that they have a bachelor's degree approved by the Accreditation Board of Engineering and Technology, Inc. (ABET) and field experience before getting an entry-level position.
Nuclear
Nuclear engineers develop and research methods, machinery and systems concerning radiation and energy in subatomic levels.<ref name=":6" /> They require on-site experience and a bachelor's degree in engineering. These engineers work in Nuclear Power plants and require licenses for practice while working in the power plant. They require work experience, passing the Professional Engineering Exam(PE), Fundamental Engineering Exam (FE), and a degree from an Accreditation Board for Engineering and Technology, Inc (ABET) approved school.<ref name=":6" /> Nuclear engineers work with the handling of nuclear material and operations of a nuclear power plant. These operations can range from handling of nuclear wastes, nuclear material experiments, and design of nuclear equipment.<ref>"What Nuclear Engineers Do". Bureau of Labor Statistics. April 13, 2018. Retrieved April 20, 2018.</ref>
Civil
Civil engineers focuses on the power plant's construction, expenses, and building.<ref name=":7">"Civil Engineers". US Bureau of Labor Statistics. April 13, 2018. Retrieved April 20, 2018.</ref> Civil Engineers require passing the Professional Engineering Exam (PE), Fundamental Engineering Exam (FE), and a degree from an Accreditation Board of Engineering and Technology, Inc. (ABET) approved school.<ref name=":7" /> They work with making sure the structure of the power plant, the location, and the design and safety of the power plant.
Associations
While there are many disparities between the aforementioned engineering disciplines, they all cover material related to heat or electricity transmission. Obtaining a degree from an ABET accredited school in any one of these disciplines is essential to becoming a power plant engineer.<ref>"How to Become a Power Plant Operator: Career Guide". Study.com. Retrieved 2018-04-18.</ref> There are also many associations which qualified engineers can join, including the American Society of Mechanical Engineers (ASME), the Institute of Electric and Electronic Engineers (IEEE), and the American Society of Power Engineers (ASOPE).
Fields
Power plant operation and maintenance consists of optimizing the efficiency and power output of power plants and ensuring long term operation.<ref name=":13">"Power Plant Engineering". english.spbstu.ru. Retrieved 2018-04-03.</ref> These power plants are large scale, and used to supply power for communities and industry. Individual household electric power generators are not included.<ref name=":02"/>
Power station design consists of the design of new power plant systems.<ref name=":1" /> There are many types of power plants, and each type requires specific expertise, as well as interdisciplinary teamwork, to build a modern system.<ref name=":02" />
See also
- Power engineering
- Mechanical engineering
- Electrical engineering
- Civil engineering
- Photovoltaics
- Thermal power station
- Hydroelectricity
- First law of thermodynamics
- Second law of thermodynamics
- Wind power
References
<references /> Brighthub Engineering. Retrieved 2018-04-18.
External links
