Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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Subject: search.filters.subject.Thermal energy storage

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    Characterization of metal-PCMs for thermal energy storage applications
    (Trans Tech Publications Ltd ttp@transtec.ch, 2015) Sudheer, R.; Prabhu, K.
    In recent years phase change materials have emerged to be ideal energy storage materials for their higher energy density over sensible heat storing materials. Use of phase change materials (PCM) have been successfully implemented at lower temperature applications with various organic compounds. On the other hand, high temperature applications have been solely dominated by various salts, their eutectics and mixtures as phase change materials. This work discusses the suitability of metals and alloys for thermal energy storage applications as the phase change material. Metals offer superior thermal conductivities with considerable energy density compared to salts. Here, two alloys namely, Sn-0.3Ag-0.7Cu (SAC) solidifying over 212-224°C and ZA8 (Zn-8%Al) solidifying over 378-405°C have been studied. Thermal analysis of PCMs using Computer Aided Cooling Curve Analysis (CA-CCA) and DSC technique were performed to predict the solidification path. In addition to this, Newtonian technique was employed to estimate the latent heat of fusion for these phase change materials. Cooling rate curves and Fraction Solid curves offered a better insight into their ability to receive and discharge heat over the concerned temperature range. © (2015) Trans Tech Publications, Switzerland.
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    Preparation and characterization of nanoparticle blended polymers for thermal energy storage applications
    (American Institute of Physics Inc. subs@aip.org, 2019) Chavan, S.; Gumtapure, V.; Arumuga Perumal, D.A.
    This paper is concerned with the comprehensive procedure of preparing, morphological characterization and thermal property evaluation of nanoparticle blended polymer composites. Polymer composites are intended to consecrate the thermal energy storage applications. Linear low-density polyethylene (LLDPE) is incorporated with functionalized graphene with different concentrations (1, 3 and 5%). The morphological study revealed compatibility of polymer composites, at lower concentrations (1-3%,) it shows homogenous dispersion, but above threshold limit the particle distribution is non-homogenous with coarse surface structures. Higher concentration (5%) of nanoparticles emulsifies the molecules and generates micelles between themselves. The thermal conductivity of the polymer composite is significantly enhanced with the reduction of specific heat. At lower concentrations polymer exhibits homogeneous dispersion and the interfacial interaction is comparatively higher, optimal concentration (3%,) of nanoparticle provides favorable results and hence polymer composites with ideal concentration can be utilized for thermal energy storage applications. © 2018 Author(s).
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    Environmental Engineering for Ecosystem Restoration—An Introduction
    (Springer Science and Business Media Deutschland GmbH, 2024) Vinod Chandra Menon, N.; Kolathayar, S.; Sreekeshava, K.S.; Bhargavi, C.
    This extensive volume addresses a range of environmental challenges and explores sustainable solutions across various domains. The research encompasses studies on paper consumption trends, thermal energy storage systems in green buildings, health risks associated with long-term noise exposure in urban areas, and passive design principles for buildings in cold and arid climates. The volume also delves into GIS-based assessments for ecosystem restoration, including groundwater quality in a smart city and spatiotemporal variability of short-term meteorological drought in semi-arid regions. Natural risk and vulnerability studies cover topics such as landslide vulnerability and the impact of changing climate on rainfall. Land use and land cover maps are analyzed for spatio-temporal changes using remote sensing and GIS tools. In the realm of industrial assessment, the volume addresses the treatment of dye-based effluents from various industries, focusing on electrochemical systems and adsorption analysis. Soft computing and numerical methods are applied to assess saltwater intrusion in inland aquaculture areas and predict ammonia levels in aquaculture. The volume also explores hydraulic structures' role in flood mitigation, with a focus on energy dissipation using a rigid stepped spillway. Groundwater suitability for irrigation is evaluated using electrical resistivity techniques. Solid waste management and green materials are extensively discussed, covering life cycle assessment in the silk textile industry, carbon footprint assessment of green concrete liners, and the effects of fly ash on concrete properties. Water quality assessment studies include analyses of borewell water for drinking purposes, groundwater quality modeling using artificial neural networks, and the application of phytoremediation for sullage treatment. The volume concludes with discussions on solid waste management in rural areas, with a focus on adaptation strategies, and quantification of water efficiencies in residential buildings. The study contributes to understanding environmental challenges and provides valuable insights for policymakers, researchers, and practitioners. Key themes include sustainable practices, environmental impact assessment, and the development of innovative technologies for waste treatment. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.