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 331 for “"thermal performance"”.
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Thermal Performance of Duplex Fuel
Made available in DSpace on 2017-07-06T18:49:09Z (GMT). No. of bitstreams: 3 Lam_Annie_W_MS.pdf: 51217607 bytes, checksum: db4c3fb2ab28998dbbe44adf22698e6e (MD5) Lam_Annie_W_MS_ABS.pdf: 584994 bytes, checksum: abbec9ad3276c16036d320cd605427de (MD5) license.txt: 4813 bytes, checksum: …
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Urban solarium : thermal performance in Boston
… issue of energy efficiency through the lens of thermal performance in the context of urban housing in the city of Boston. Located in the historic brick row house neighborhood of the South End, the project utilizes brick for its inherent property of high heat capacity - a material's ability to …
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Thermal Performance of Microencapsulated Phase Change Material Slurry
The research consists of a variety of experimental investigations relevant to MPCM. Initial quantitative characterization of MPCM material properties, including latent heat of fusion, melting and freezing points, and temperature- and concentration-dependent viscosity data, are presented. …
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The Impact of Different Passive Roof Construction Types on Building Thermal Performance / Experimental Method for Optimizing the Thermal Performance of Building Enclosures
… technologies as a means of improving the indoor thermal conditions under summer conditions. Five identical Smart Test Cells (STCs) representing a section of a typical Iraqi dwelling unit were constructed for the experimental research of the study. In this research, the roof was the only envelope …
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Property measurement and thermal performance prediction of foam insulations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1984.
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Thermal performance of a room with wall latent heat storage
Thermal storage use in buildings is a promising approach for the improvement of energy efficiency. In this study, the feasibility and benefits of utilization of phase change materials (PCMs) in building envelope components for thermal storage were investigated. The phase change material (PCM) …
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Thermal Performance Study of Liquid Metal Fast Breeder Reactor Insulations
Three types of metallic thermal insulations were investigated analytically and experimentally. These were multilayer reflective plates, multilayer honeycomb composite and multilayer screen insulation. Each of these insulations was subjected to evacuated and non-evacuated conditions where thermal …
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Radiative transfer and thermal performance levels in foam insulation boardstocks
The validity of predictive models for the thermal conductivity of foam insulation is established based on the fundamental geometry of the closed-cell foam. The extinction coefficient is experimentally and theoretically determined; the theoretical prediction based on measured geometrical properties …
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Development of straw insulation board : fabrication methods, structure, thermal performance
… to 160 kilograms per cubic meter), and has good thermal properties for an air based insulation, meaning R3 to R4 per inch (Btu-in/ hr-ft2-°F)-, or a conductivity of .048 to .036 W/m-K. The initial effort is to produce a straw insulation board suitable for northern Pakistan, where we are studying …
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Thermal Performance Comparison of Three Integrated Thermal Solar Roof Collectors
… by operating this system. The traditional solar thermal system is an add-on system rather than integrated, which increases the cost-benefit ratio. The current system is integrated with the roof structure. Except for the energy collecting benefit, it will reduce the material cost, labor cost and …
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Structural and thermal performance of cold-formed steel studs with slits
… increasingly incorporate web slits to limit thermal bridging, yet these openings can reduce axial strength. This thesis integrates structural and thermal assessments through validated non-linear elasto-plastic finite element analysis (FEA) and complementary heat-transfer modelling. …
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The Thermal Performance and Tolerance of Tropical cleaner shrimp (Lysmata amboinensis)
… traded organisms. Chapter two investigates the thermal performance and tolerance of the tropical cleaner shrimp (Lysmata amboinensis) under thermal warming and cooling scenarios, providing insight into how a tropical species of shrimp responds to thermal change. Overall, this species showed a …
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Thermal performance of a Nam-Ju nanostructured copper oscillating heat pipe
As electronic devices increase in performance and decrease in size, more efficient thermal management systems are necessary to combat high heat fluxes. Copper heat pipes, and oscillating heat pipes are devices commonly used in the electronics industry to remove high heat fluxes, safeguarding …
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Cool Roofs for improving thermal performance of existing EU office buildings
… to reduce heat gains during daytime - and a high thermal emissivity that enables them to dissipate the heat absorbed throughout the day during night. Despite the concept of cool roofs - i.e. the application of cool materials to roof surfaces - is well known in US since 1990s, many studies focused …
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Thermal performance testing of heat exchangers with reference to future automation
… an investigation into reducing the time spent in thermal performance testing heat exchangers. Conventional testing requires establishing steady state conditions which is time consuming. The research considered two approaches - use of a non-steady state testing technique and closed-loop control of …
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Improved seismic and thermal performance of low-income housing in Nepal
… opportunity areas to improve the structural and thermal performance of their rebuilt homes. Using scaled testing and structural modeling this work finds promising ways to reinforce the mud mortar used in common stone and mud construction. Results indicate a 20-60% improvement in the predicted out …
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Predicting the thermal performance of bio-based cold chain packaging system
… and computational approaches to improve the thermal efficiency and environmental sustainability of passive cold chain packaging systems. The first phase of the study (Chapter 1) focuses on predicting the thermal performance of bio-based ISCs through finite element modeling (FEM). Material …
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Stagnation temperature test methods for determining solar collector thermal performance degradation
… evaluate a proposed method for determining the thermal degradation of materials used in flat-plate solar collectors. The proposed method is based on measuring stagnation (no-flow) temperatures of the absorber plate. A comparison of the advantages and limitations of the proposed method is made …
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The effects of material property changes on solar collector thermal performance
… detail. Next, a mathematical model of collector thermal performance is used to show the theoretical dependence of efficiency on property values. Actual degradation measurements of three typical collectors in the NBS D/R Program are presented. These measurements, based on ASHRAE standard 93-77 …
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