Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 184 for “"waste heat"”.
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Furnace offgas waste heat utilization
The project investigates a heat exchanger design concept for a furnace offgas pipe from an industrial furnace at Elkem. The goal is to develop a heat exchanging concept for harvesting exhaust heat using a numerical model. The proposed heat exchanger duct goes around a 3,2 m diameter pipe, and its …
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Waste heat recovery from aluminum production
… consumed in aluminum production is lost as waste heat. Approximately 30-45% of the total waste heat is carried away by the exhaust gas from the smelter which is the most easily accessible waste heat stream. Alcoa Fjardaal in east Iceland produces 350 000 tons annually, emitting the 110 °C …
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Harnessing thermoacoustics for waste heat recovery
… manufacturing processes is lost in some form to waste heat. The purpose of this study is to review the waste heat recovery technologies currently available in both commercial and research applications to determine how thermoacoustics may serve a role in furthering the use of waste heat recovery …
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Waste heat reclamation in aircraft engines
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014.
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Parametric Study on a Novel Waste Heat Recovery System
… on an industry-sponsor project involving a novel waste heat-to-electricity conversion system. This proprietary system utilizes thermal energy from a low temperature heat sources to produce torque that drives an electric generator to produce electricity. The system needs to be studied through …
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Waste heat recovery from a high temperature diesel engine
… fuel energy being rejected to the environment as waste heat through engine coolant and exhaust gases. Attempts have been made to harness this waste heat and use it to drive a Rankine cycle and produce additional work to improve efficiency. Research on waste heat recovery (WHR) demonstrates that it …
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Low-grade Thermal Energy Harvesting and Waste Heat Recovery
Low-grade heat, either in the form of waste heat or natural heat, represents an extremely promising source of renewable energy. A cost-effective method for recovering the low-grade heat will have a transformative impact on the overall energy scenario. Efficiency of heat engines deteriorates with …
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Analysis and design of stirling engines for waste-heat recovery
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1981.
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Waste heat recovery in automobile engines : potential solutions and benefits
… car; most of the remaining energy is lost as heat. Since most of the energy consumed by an internal combustion engine is wasted, capturing much of that wasted energy can provide a large increase in energy efficiency. For example, a typical engine producing 100 kilowatts of driveshaft power …
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Design and modeling of an exhaust gas waste heat autoclave
… was designed and modeled. This system uses waste engine heat from the exhaust system of a diesel generator set to boil water and produce the pressurized steam conditions necessary for effective medical sterilization. Currently, the design utilizes a 0.59 meter, concentric tube cross-flow …
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Waste heat recovery in aluminum plants by means of Stirling engines
Parmi tous les secteurs industriels, celui de la production d’aluminium est l’un des plus importants consommateurs d’énergie : les processus les plus modernes nécessitent une quantité d’énergie électrique comprise entre 11 et 15 MW h par tonne d’aluminium produite. La plus grande partie de cette …
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Energy harvesting of low-grade waste heat with colloid based technology
L'abstract è presente nell'allegato / the abstract is in the attachment
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Feasibility study of heat pumps for waste heat recovery in industry
… to assess the feasibility of implementing the heat pump for waste heat recovery. Through analysis, the focus was narrowed down from a site wide audit, to a departmental breakdown and then eventually to a specific process; the wort boiler. Three different alternatives were investigated and the …
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Synthesis of molten salt as heat transfer fluid for waste heat recovery application
Basically, various materials such as water, oil heat, ionic liquids and also molten salt are selected to serve as heat transfer fluid. The properties of the different heat transfer fluid determine their performance in any application. The development of nitrate molten salt with different …
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Synthesis and thermoelectric properties of Mg2Si-Mg2Sn solid solutions for waste heat recovery
… promising thermoelectric materials for vehicle waste-heat recovery owing to their high figure-of-merit (ZT), light weight, low cost, and non-toxicity. The optimized ZT of Mg2Si0.4Sn0.6 peaks at ∼ 750 K because its relatively narrow band gap results in the pronounced bipolar thermoelectric …
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Thermoelectric waste heat recovery in automobile exhaust systems: Topological studies and performance analysis
… has placed an emphasis on exhaust system waste heat recovery as a 40% of the fuel's chemical energy is lost to the environment in modern spark ignition engines. To advance fuel economy, researchers are currently evaluating technologies to exploit exhaust stream thermal power using …
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