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advances in thermal engineering ppt
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02-01-2016, 04:50 PM
Hi I am vamsikrishna I want to give paper presentation on advances in thermal topic,so my friend said that topic can get here and its important to me .so I need your help please details about that topic
04-01-2016, 02:55 PM
advances in thermal engineering ppt
Thermal engineering is playing a key role in protecting the environment, advancing critical technologies, and reducing costs in industry.
Heat transfer - more broadly, thermal engineering - is playing an increasingly critical role in the development and successful application of advanced technology in virtually all fields. From space stations to hazardous-waste destruction to high-speed transport, from ozone-protecting refrigerants to "night vision" goggles, a vast range of technologies depend on energy management, heat-flow control, and temperature control to successfully meet their design objectives and attain commercial success.
Meeting the continually escalating demand for electricity and "cheap" process heat will remain a challenge. Environmental protection can depend not only on using energy more efficiently, but on changing the energy conversion process to reduce initial pollutant formation. Further advances in electronics, materials processing, and manufacturing will depend in part on more precise energy management and temperature control.
The scale of thermal engineering is quite broad, extending from the very large to the near-molecular level, and from very high temperatures of thousands of degrees to very low ones approaching absolute zero. This breadth of application can be illustrated by a review of three specific areas: application of advanced numerical modeling to large boiler furnaces (approaching 100 m in height) in order to improve environmental performance; application of microscale ([approximately] 100 [Mu]) heat pipes to cool high-performance electronic circuits; and a look at some of the manufacturing processes where heat transfer and thermal analysis improve quality, performance, and cost.
NUMERICAL MODELING
The combustion of fossil fuels, such as coal, provides energy for process heat and/or electricity generation. Turbulent combustion is a very complex flow, heat transfer, and chemical reaction process, where it is important to simultaneously meet three frequently conflicting goals:
* High combustion efficiency to use all of the fuel;
* Minimum emissions of air pollutants such as nitrogen oxides (N[O.sub.x]);
* Maximum equipment efficiency to remove and utilize the heat at a minimum cost.
The combustion of coal in large boiler furnaces is a challenging problem for thermal evaluation. In a typical configuration, the furnace's open volume is large, and the geometry is fully three-dimensional and complex, with up to 100 individual burners. The fuel is dirty with reacting (carbon) and nonreacting (ash) solids mixed in the turbulent flame.
Thermal engineering is playing a key role in protecting the environment, advancing critical technologies, and reducing costs in industry.
Heat transfer - more broadly, thermal engineering - is playing an increasingly critical role in the development and successful application of advanced technology in virtually all fields. From space stations to hazardous-waste destruction to high-speed transport, from ozone-protecting refrigerants to "night vision" goggles, a vast range of technologies depend on energy management, heat-flow control, and temperature control to successfully meet their design objectives and attain commercial success.
Meeting the continually escalating demand for electricity and "cheap" process heat will remain a challenge. Environmental protection can depend not only on using energy more efficiently, but on changing the energy conversion process to reduce initial pollutant formation. Further advances in electronics, materials processing, and manufacturing will depend in part on more precise energy management and temperature control.
The scale of thermal engineering is quite broad, extending from the very large to the near-molecular level, and from very high temperatures of thousands of degrees to very low ones approaching absolute zero. This breadth of application can be illustrated by a review of three specific areas: application of advanced numerical modeling to large boiler furnaces (approaching 100 m in height) in order to improve environmental performance; application of microscale ([approximately] 100 [Mu]) heat pipes to cool high-performance electronic circuits; and a look at some of the manufacturing processes where heat transfer and thermal analysis improve quality, performance, and cost.
NUMERICAL MODELING
The combustion of fossil fuels, such as coal, provides energy for process heat and/or electricity generation. Turbulent combustion is a very complex flow, heat transfer, and chemical reaction process, where it is important to simultaneously meet three frequently conflicting goals:
* High combustion efficiency to use all of the fuel;
* Minimum emissions of air pollutants such as nitrogen oxides (N[O.sub.x]);
* Maximum equipment efficiency to remove and utilize the heat at a minimum cost.
The combustion of coal in large boiler furnaces is a challenging problem for thermal evaluation. In a typical configuration, the furnace's open volume is large, and the geometry is fully three-dimensional and complex, with up to 100 individual burners. The fuel is dirty with reacting (carbon) and nonreacting (ash) solids mixed in the turbulent flame.
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