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 107 for “"Thermal Storage"”.
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Advanced building skins : translucent thermal storage elements
… building envelope. New glazing, insulation and thermal storage technologies are discussed in the context of their technical trajectories. Based on th is discussion of functions and technologies, a specific set of materials is selected and their combination into a facade panel is proposed. Th is …
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Heat extraction for the CSPonD thermal storage unit
… (330° to 275°C) with the lights off and a thermal lid, to reduce radiation and surface convection losses. The thermal lid improved the extraction duration by a factor of four. The second objective was to characterize the thermal loss rate (W) of the each prototype. The thermal loss rate …
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Numerical and Experimental Study of Solidification Behavior in Thermal Storage Systems
<p>This dissertation investigates thermal energy storage systems for building applications through experimental validation, computational modeling, and geometric optimization of phase change material (PCM) systems. The study addresses limitations in empirical data, HVAC integration, and …
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The use of ice thermal storage with real time electricity pricing.
The thesis investigates the application of ice thermal storage technology to situations where the price of electricity varies continuously with instantaneous network demand. A central hypothesis is postulated in chapter 1, which states: "A variable electricity pricing structure, in which unit price …
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Modelling High-Temperature Thermal Storage Systems for Concentrated Solar Power Plants
Thermal energy storage (TES) is an important aspect of concentrated solar power (CSP) systems addressing the mismatch between electrical demand and supply profiles and intermittency in the solar resource. The design of TES components should be optimised from a system-level perspective to minimise …
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Modelling High-Temperature Thermal Storage Systems for Concentrated Solar Power Plants
Thermal energy storage (TES) is an important aspect of concentrated solar power (CSP) systems addressing the mismatch between electrical demand and supply profiles and intermittency in the solar resource. The design of TES components should be optimised from a system-level perspective to minimise …
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Viability assessment of enhancing dry cooling systems using thermal storage ponds
… an accurate model to predict the transient thermal response of the pond. No such pond model is available in open literature due to the pond under consideration having a unique size as well as size to depth ratio. Various heat transfer modes are numerically modelled for large evaporation …
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Thermal Characterization of Graphitic Carbon Foams for Use in Thermal Storage Applications
… foams are currently being studied for use as thermal conductivity enhancers (TCEs) in thermal energy storage (TES) systems. TES systems store energy using the latent heat capacity of phase change materials (PCMs). Due to the low thermal conductivity of most PCMs, TCEs are necessary to evenly …
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A domestic solar/heat pump heating system incorporating latent and stratified thermal storage.
… background, a heating system combining solar thermal collectors, heat pump, stratified thermal storage and water/ice latent heat storage has been investigated. In order to investigate and optimise the heating system, a dynamic system simulation model was developed. On this basis, a fundamental …
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Heat recovery and thermal storage : a study of the Massachusetts State Transportation Building
… utilizes internal-source heat pumps and a water thermal storage system to provide building heating and cooling. The potential benefits of this type of system include both energy savings and operating and equipment cost savings when compared to more conventional building heating and cooling …
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Transient-heat-transfer and stress analysis of a thermal-storage solar cooker module
… the best material and configuration of a thermal-storage solar cooker module.The thermal-storage solar cooker utilizes the high-latent-heat lithium nitrate releases when transitioning from liquid to solid state.However,before this process can transpire the salt has to be completely melted …
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Modeling of Thermal Storage Silos and Heat Exchanger for Particle-Based Concentrated Solar Power
… goal of this work is the development of simpler thermal models of a particle storage silo and a particle-to-super critical carbon dioxide heat exchanger. These models are then combined together into a continuous system where the particles flow from the storage system through the heat exchanger. …
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A comparison of thermal storage models with a solar electric generation system using Trnsys
… that models three different types of sensible thermal storages for analysis with use in a solar electric generating system (SEGS) simulation. One component containing a fully mixed, stratified and a plug flow tank model has been developed such that the inputs and parameter specifications are …
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Power electronics implementation of dynamic thermal storage as effective inertia in large energy systems
… domains, such as electrical, mechanical, thermal, and chemical. Although many systems are becoming predominantly electrical dependent, an integrated multi-physics energy approach creates additional avenues to higher power density, system efficiency, and reliability. Power electronics, …
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Numerical solution of multiple front phase change problems for modeling ice thermal storage systems
… systems, which arise in ice-on-pipe brine thermal energy storage systems, are investigated in this study. Two numerical methods, the boundary element method ( BEM ) and the thermal network method ( TNM ), are developed to solve the multiple front phase change problems. In the thermal …
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Investigation of Shroud Geometry to Passively Improve Heat Transfer in a Solar Thermal Storage Tank
… is used to passively increase heat transfer in a thermal store. The shroud and baffle are used to create a vena contracta near the surface of the heat exchanger, which will speed up the flow locally and thereby increasing heat transfer. The goal of this study is to investigate the geometry of the …
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Potential energy cost savings by use of building roofs as thermal storage of a multi-storied building
The thermal mass of a building has been used for more than two decades to shift the peak cooling load occurring during the day time to evening or night time. This is typically accomplished by use of concrete slabs embedded with pipes carrying hot or chilled water to meet the heating or cooling …
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Second law analysis of the transient behavior of solid media thermal storage utilizing finite difference computational modeling
… developed to simulate the behavior of a simple storage system. The system analyzed utilizes the deposition of heat from a fluid to a solid matrix in the initial part of cycle followed by heat removal in the latter part. The storage system was divided into perpendicular slices with respect to the …
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Dynamic modeling and control strategies for a micro-CSP plant with thermal storage powered by the Organic Rankine cycle
… 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 developed so far operate at steady-state or …
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Improving energy efficiency : (turning wasted heat into cash flow)
… 2. Storing this energy with our proprietary thermal storage materials. 3. Selling the stored energy at either industrial sites or to pricier markets. New thermal-storage materials and a mini-sized combined heat and power (CHP) system have been further developed. This system will be the first …
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