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 7 of 7 for “"Scroll expander"”.
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Design, analysis and experimental investigation of a new scroll expander based trigeneration system
… source heat is used to generate power through a scroll expander and a portion of the heat is used in an ejector cooling system. The residual heat which is normally released to the environment in this type of power cycle is captured as much for hot water heating or space heating. Ammonia-water is …
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Sustainable design and durability of domestic micro combined heat and power scroll expander systems.
… the main components of three different micro-CHP scroll expander systems was conducted. This was performed in order to identify the possible tribo-mechanical effects (abrasion, adhesion, cavitation, fatigue) which occur on the substrate of these components during the operation of the scroll which …
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Flow modelling of scroll compressors and expanders
The use of scroll compressors in refrigeration systems is becoming increasing popular. However the development and use of a scroll machine as an expander to replace a throttle valve has never been reported. This thesis describes the work carried out to develop a two phase scroll expander for use in …
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ThermoSolar and photovoltaic hybridization for small scale distributed generation : applications for powering rural health
… Rankine Cycle (ORC) using repurposed HVAC scroll compressors as expanders. The design of the [mu]-CSP technology is informed by a semi-empirical steady state multi-physics sizing and performance model (SORCE) which predicts system output, efficiency, and specific costs as a function of …
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Mechanical design, control and optimization of a hybrid solar microgrid for rural electrification and heat supply in sub-Saharan Africa
… (the mechanical design of a high expansion ratio expander) to the more global evaluation of their impact once included into a complex micro-grid system. Special attention has also been paid to the links between thermal and electrical demands. The main contributions of this thesis are: – The …
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Exergoeconomic analysis and optimization of organic Rankine cycles
… in low temperature heat sources. A Bitzer model scroll expander is used for the prime mover for the system. This expander has a reliable model in which thermodynamic analysis can be done. Various working fluids are explored to investigate which one will provide the most power output and …
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Dynamic modeling and control strategies for a micro-CSP plant with thermal storage powered by the Organic Rankine cycle
… energy. Coupling small-scale ORCs powered by scroll expander- generators with solar thermal collectors and storage can provide combined heat and power to underserved rural communities. Simulation of such systems is instrumental in optimizing their control strategy. However, most models …