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 196 for “"PCM"”.
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PCM television bandwidth reduction using pseudo-random noise
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1961
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Enhancing Urban Energy Sustainability through PCM-Integrated Mortar Infrastructure
… sustainability using Phase-Change Material (PCM) and recycled crushed glass with low thermal conductivity. This study also aims to clarify contradictory findings about the impact of glass on the mechanical properties of mortar. While some studies suggest that incorporating glass improves the …
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Development of thermo-regulating fabric using phase change material (PCM)
… concentrates on use of phase change material (PCM) in textiles which can produce thermo-regulating characteristics to control body temperature useful for various daily wear and technical textiles. The latent heat which is released or absorbed during the process of phase change is studied and …
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New PCM based FPGA architecture and graphene memory cell design
… (LUT) implementation using phase change memory (PCM) cells. Utilizing the fact that PCM cells store data using resistance values, unlike traditional memory cells, the memory cell we propose can store up to 2 bits per cell. This is achieved by controlling the 1T2R PCM cell resistances between the …
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Reconstruction of missing packets of PCM and ADPCM encoded speech
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1986.
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Preparation and Characterization of Bio-based PCM Microcapsules for Thermal Energy Storage
Phase change materials (PCM) have gained extensive attention in thermal energy storage applications. During their phase transition, the energy can be stored in or released from PCM. While changing from solid state to liquid state, PCM start to flow. Encapsulation is a widely-used technique to …
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An Investigation of Phase Change Material (PCM)-Based Ocean Thermal Energy Harvesting
Phase change material (PCM)-based ocean thermal energy harvesting is a relatively new method, which extracts the thermal energy from the temperature gradient in the ocean thermocline. Its basic idea is to utilize the temperature variation along the ocean water depth to cyclically freeze and melt a …
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Thermal Performance Enhancement of a Crossflow PCM-to air and liquid Heat Exchanger
… exchanger integrated with phase change material (PCM). The PCM-integrated heat exchanger (PCM-HEX) incorporates two fluid flows and is improved to operate effectively during intermittent working fluid flow periods. The system targeted for investigation has previously undergone examination by prior …
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Thermal Performance Modeling of a Novel Dual-PCM Evacuated U-Tube Solar Collector
… have shown that utilizing phase change material (PCM) as an energy storage medium in SWH systems can alleviate the effect the booster unit. Nevertheless, current SWH technology has the PCM-based storage unit designed as a separate medium away from the solar collectors. The novelty of this study …
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ENHANCEMENT OF PHASE CHANGE MATERIAL (PCM) THERMAL ENERGY STORAGE IN TRIPLEX-TUBE SYSTEMS
… components utilizing phase change materials (PCMs). These materials have the potential to store large amounts of energy in relatively small volumes and within nearly an isothermal storage process. The primary drawback of today’s PCMs is that their low thermal conductivity values critically …
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Shape-Stabilization of PCM/HDPE Composites with 3D-Printing Applications for Battery Thermal Management
<p>Phase-change materials (PCMs) are a useful alternative to more traditional methods of thermal management of Li-ion batteries in electric or hybrid-electric vehicles. PCMs are materials which absorb large amounts of latent heat and undergo solid-to-liquid phase change at near-constant …
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Thermal performance of backflow solar air heating with integrated nanoparticle enhanced pcm absorber storage system
… nanoparticles enhanced phase change material (PCM) absorber storage system. Three different SAH configurations have been designed and studied; without thermal storage, with thermal storage using paraffin wax as a PCM and with thermal storage using Al2O3-paraffin wax. A three-dimensional …
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Modelling, design and analysis of innovative thermal energy storage systems using PCM for industrial processes, heat and power generation
… (TES) systems based on phase change materials (PCM) to be used as a back-up for intermediate temperature applications (up to 250 °C). The work is divided in two part: the first part presents the development of numerical models of the latent heat thermal energy storage (LHTES) devices. Different …
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Parametric Analysis and Life Cycle Cost Assessment for Optimizing PCM Application in Exterior Walls in the Kingdom of Saudi Arabia
… This study proposes replacing thermal mass with PCM in modular housing and, investigates this using EnergyPlus simulations. The research investigated the optimal placement and thickness of PCM to maximize its thermal performance in SIPs. PCM application reduced the model total site energy by …
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Performance of phase change cementitious composites with self-heating capacity
… significant contributor. Phase Change Materials (PCM) are introduced in construction to store heat energy and regulate temperature, reducing the reliance on air conditioners. Concrete is an ideal carrier for PCM, making PCM concrete a promising solution for energy savings and sustainable …
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Parent-child mutuality: An examination of its influences and stability in a twin sample
This study explored parent-child mutuality (PCM) in a number of different ways. The stability of PCM, as well as its relation to externalizing problems in children, was examined. In addition, the influences of genes, parent personality, and child temperament on PCM were explored. It was expected …
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Investigation of advanced experimental and computational techniques for behavioural characterisation of phase change materials (pcms)
The existing Phase Change Material (PCM) thermal investigation methods have significant drawbacks and limitations in terms of the correct determination of phase change temperature and enthalpy values. It results in the inaccuracy and sometimes absence of experimental data which are required for the …
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Structural and Molecular Mechanisms of Centrosome Assembly and Strength
… of centrosomes, called pericentriolar material (PCM), organizes microtubules for mitotic spindle assembly. The molecular interactions that enable PCM to assemble and resist external forces are poorly understood. To answer such question, we use cross-linking mass spectrometry (XL-MS) to analyze …
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Thermal performance of a room with wall latent heat storage
… of utilization of phase change materials (PCMs) in building envelope components for thermal storage were investigated. The phase change material (PCM) gypsum board used in this study was made by soaking conventional gypsum board in a PCM with phase change range of …
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Ultra-low power phase change memory with carbon nanotube interconnects
Phase change memory (PCM) is a promising candidate for the next-generation non-volatile data storage, though its high programming current has been a major concern. By utilizing carbon nanotubes (CNTs) as interconnects to induce phase change in ultra small regions of Ge2Sb2Te5 (GST), we are able to …
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