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 38 for “"Heat Engine"”.
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Development of a Nitinol heat engine
… Institute of Technology, Dept. of Mechanical Engineering, 1980.
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Simulation and control of a Marnoch heat engine
The Marnoch heat engine (MHE) is a new type of heat engine currently under development at the University of Ontario Institute of Technology. The MHE can use waste or collected heat at temperatures that are currently unusable or not economically viable to use by conventional technologies. The MHE …
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The VT1 Shape Memory Alloy Heat Engine Design
… a period of intense interest in the area of heat engines in the late 70's and early 80's. It was believed that these engines could use heat from low temperature sources such as solar heated water, geothermal hot water and rejected heat from conventional engines as a significant source of …
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An efficient heat engine for ocean thermal energy conversion
… thermal Physics. The solution required engineering knowledge in the realm of Reynolds numbers, friction factors, and Navier-Stokes computational fluid dynamics solutions to optimize the venturi so that it would approach its theoretical efficiency. I therefore chose my co-discipline in …
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Piezoelectric flexing and output voltage of a microchannel heat engine
… membrane and fluid motion in a microchannel heat engine. A new slug flow model is developed for droplet motion in a circular cross-section channel. The model includes friction, pressure, viscous and thermocapillary forces on the droplet. This thesis examines the concept of a piezoelectric …
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Heat Engine Driven by Shape Memory Alloys: Prototyping and Design
… shape memory alloy (SMA) wires into a functional heat engine. Significant contributions include the design itself, a preliminary analytical model and the realization of a research prototype; thereby, laying a foundation from which to base refinements and seek practical applications. Shape memory …
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Thermodynamic performance evaluation and experimental study of a Marnoch Heat Engine
The Marnoch Heat Engine (MHE) is a recently patented type of new heat engine that produces electricity from lower temperature heat sources. The MHE utilizes lower temperature differences to generate electricity than any currently available conventional technologies. Heat can be recovered from a …
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Transient heat transfer analysis of heat exchangers in a Marnoch Heat Engine
The Marnoch heat engine (MHE) is a new type of power generation device that is under research and development at the University of Ontario Institute of Technology. In this thesis, the transient heat transfer behaviour of the source heat exchanger of the Marnoch heat engine is studied, and its …
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A strategic analysis of the advanced ceramics industry for heat engine applications
Thesis: M.S., Massachusetts Institute of Technology, Sloan School of Management, 1986
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Experimental design, analysis and improvement of a Marnoch Heat Engine with heat recovery.
… research examines the prototyping of a Marnoch Heat Engine (MHE) and conducts thermodynamic and heat transfer analyses of this heat engine with a waste heat recovery system. The heat source for the MHE can be low grade heat (about 365 K). During cold seasons an ambient temperature can be …
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The development of a prototype external heat engine based on the Ericsson cycle
… this thesis was to develop a prototype external heat engine based on the Ericsson cycle, as an alternative to the internal combustion engine, to be used as a small-scale power source for rural Africa. Subsequently test and evaluate its viability and potential to fulfil the requirements of such an …
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Development and assessment of a novel osmotic heat engine for energy generation from low-grade heat
… a clean and secure energy future. The osmotic heat engine (OHE) is a closed-loop, membrane based process that utilizes low-grade heat and salinity-gradient energy between two streams for electrical energy generation. The OHE couples pressure retarded osmosis (PRO), an osmotically driven …
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Enhancing the performance of a self-oscillating fluidic heat engine (SOFHE) through thermodynamic cycle and phase change characterization
L'objectif de cette thèse est de mieux comprendre les principes de fonctionnement d'un moteur thermique fluidique auto-oscillant (SOFHE) récemment découvert, en caractérisant le cycle thermodynamique (diagramme P-V) et le changement de phase (évaporation-condensation). Le SOFHE est proposé pour la …
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Limit Theorems for Random Billiard Models
… and another which models a minimalistic heat engine. The main results for the gas diffusion model, a series of probabilistic limit theorems, allow us to express transport characteristics such as mean exit times of the gas from the channel in terms of characteristics of the channel walls. …
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Nanoscale thermal systems in subcritical region
… thermodynamic cycles. A nanoscale vapor heat engine shows a lower efficiency than the macroscale vapor heat engine and the coefficient of performance for a nanoscale refrigeration cycle is higher than that for a macroscale refrigeration cycle.
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Engineering the Whirlwind
… suggesting they can be usefully analysed as heat engines, converting Convectively Available Potential Energy (CAPE) contained in a rising columnar core, into rotational kinetic energy. The cold reservoir of the heat engine is considered as being located at the point where the coherent vortex …
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Thermal energy grid storage : liquid containment and pumping
… concept that stores electricity as sensible heat in an extremely hot liquid (>2000°C) and uses multi-junction photovoltaics (MPV) as a heat engine to convert it back to electricity on demand hours, or days, later. In addition to a technoeconomic analysis, this thesis focuses experimentally on …
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Experimental and theoretical investigations of a new integrated solar tower system for photocatalytic hydrogen and power production
… process, a photovoltaic process, and a heat engine to efficiently utilize solar radiation. For a given solar tower system that requires a reflective area of 913, 289 m2, energy and exergy efficiency values up to 40% and 30% are achieved respectively. Based on archived solar data, for a …
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LOW DIMENSIONAL CARBON BASED ORGANIC THERMOELECTRIC COMPOSITES: SYNTHESIS, CHARACTERIZATION, AND PERFORMANCE
… magnitude below that required to replace current heat engine power sources. Alternatively, one potential solution is to consider using thermoelectrics in low powered applications where their efficiencies are comparable to those of standard heat engines, and where the use of heat engines is …
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Design, analysis and experimental investigation of a new scroll expander based trigeneration system
… energy produce a large amount of waste heat which can potentially be recovered in the form of useful work to use in our day to day life. This initiative not only optimizes the energy usage but also contributes to mitigating environmental impact of fossil fuel. There are also two main …
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