Capric acid and stearic acid mixture impregnated with gypsum wallboard for low-temperature latent heat thermal energy storage
TL;DR: In this paper, a novel form-stable phase change wallboard (PCW) was prepared for low-temperature latent heat thermal energy storage by incorporating eutectic mixture of capric acid and stearic acid and gypsum wallboard.
Abstract: A novel form-stable phase change wallboard (PCW) was prepared for low-temperature latent heat thermal energy storage by incorporating eutectic mixture of capric acid and stearic acid and gypsum wallboard. Thermal properties of form-stable PCW were measured by DSC analysis. The form-stable PCW has good thermal reliability with respect to the changes in its thermal properties after accelerated thermal cycling. Thermal performance test indicated that the use of such a type of PCW can decrease indoor air temperature fluctuation due to absorption of heat by the eutectic phase change material. Copyright © 2007 John Wiley & Sons, Ltd.
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TL;DR: In this article, the state of the art of phase change materials for thermal energy storage applications is reviewed and an insight into recent efforts to develop new phase change material with enhanced performance and safety.
1,399 citations
TL;DR: In this article, a comprehensive review of the integration of phase change materials in building walls is presented. But, even if the integrated phase change material have a good potential for reducing energy demand, further investigations are needed to really assess their use.
Abstract: The present paper is the first comprehensive review of the integration of phase change materials in building walls. Many considerations are discussed in this paper including physical considerations about building envelope and phase change material, phase change material integration and thermophysical property measurements and various experimental and numerical studies concerning the integration. Even if the integrated phase change material have a good potential for reducing energy demand, further investigations are needed to really assess their use.
856 citations
TL;DR: In this paper, the authors deal with the preparation, characterization and determination of thermal energy storage properties of polyethylene glycol (PEG)/diatomite composite as a novel form-stable composite phase change material (PCM).
576 citations
TL;DR: In this article, an extensive review on the incorporation of PCM into construction materials and elements by direct incorporation, immersion, encapsulation, shape-stabilization and form-stable composite PCMs is presented.
Abstract: The building sector is the dominant energy consumer with a total 30% share of the overall energy consumption and accounts for one-third of the greenhouse gas emissions around the world. Moreover, in recent years the energy demands for buildings have increased very rapidly due to increase in the growth rate of population and improvement in living standards of people. Furthermore, fossil fuels will continue to dominate the world's primary energy by 2030. Thus, the increase in energy demand, shortage of fossil fuels and environmental concerns has provided impetus to the development of sustainable building and renewable energy resources. Thermal energy storage is an efficient method for applying to building envelopes to improve the energy efficiency of buildings. This, in turn, reduces the environmental impact related to energy usage. The combination of construction materials and PCM is an efficient way to increase the thermal energy storage capacity of construction elements. Therefore, an extensive review on the incorporation of PCM into construction materials and elements by direct incorporation, immersion, encapsulation, shape-stabilization and form-stable composite PCMs is presented. For the first time, the differentiation between shape-stabilized and form-stable composite PCM has been made. Moreover, various construction materials such as diatomite, expanded perlite and graphite, etc. which are used as supports for form-stable composite PCM along with their worldwide availability are extensively discussed. One of the main aims of this review paper is to focus on the test methods which are used to determine the chemical compatibility, thermal properties, thermal stability and thermal conductivity of the PCM. Hence, the details related to calibration, sample preparation, test cell and analysis of test results are comprehensively covered. Finally, because of the renewed interest in integration of PCM in wallboards and concrete, an up-to-date review with focus on PCM enhanced wallboard and concrete for building applications is added.
516 citations
TL;DR: In this paper, a form-stable composite phase change material (PCM) was used for building materials to obtain effective energy storage performance in latent heat thermal energy storage (LHTES) systems.
309 citations
References
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TL;DR: In this paper, a review of the history of thermal energy storage with solid-liquid phase change has been carried out and three aspects have been the focus of this review: materials, heat transfer and applications.
4,019 citations
"Capric acid and stearic acid mixtur..." refers background in this paper
...nucleating behavior and good thermal and chemical stability after long-term utility period [17–19]....
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...The latent heat values of the eutectic PCM were high compared to some PCMs such as salt hydrates and polyalcohols [3, 17, 19]....
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TL;DR: In this article, the melting and freezing behavior of various heat-of-fusion storage materials is investigated using the techniques of Thermal Analysis and Differential Scanning Calorimetry.
1,455 citations
Book•
29 Apr 2002
TL;DR: In this paper, the authors present an overview of thermal energy storage systems and their application in the context of thermal engineering, including thermal transfer with phase change in simple and complex geometries.
Abstract: List of Contributors.Acknowledgements.Preface.General Introductory Aspects for Thermal Engineering. Energy Storage Systems. Thermal Energy Storage (TES) Methods. Thermal Energy Storage and Environmental Impact. Thermal Energy Storage and Energy Savings. Heat Transfer and Stratification in Sensible Heat Storage Systems. Modeling of Latent Heat Storage Systems. Heat Transfer with Phase Change in Simple and Complex Geometries. Thermodynamic Optimization of Thermal Energy Storage Systems. Energy and Exergy Analyses of Thermal Energy Storage Systems. Thermal Energy Storage Case Studies.Appendix A -- Conversion Factors.Appendix B -- Thermophysical Properties.Appendix C -- Glossary.Subject Index.
1,307 citations
"Capric acid and stearic acid mixtur..." refers background in this paper
...The magnitude of the energy recovered from an LHTES system basically depends on the heat storage capacity of a phase change material (PCM) during the phase change at an almost constant temperature [3, 4]....
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TL;DR: In this article, phase change materials (PCMs) are used to capture solar energy directly and increase human comfort by decreasing the frequency of internal air temperature swings and maintaining the temperature closer to the desired temperature for a longer period of time.
1,274 citations
"Capric acid and stearic acid mixtur..." refers methods in this paper
...Two general methods have been proposed for incorporation of PCMs within construction elements: (1) encapsulation of PCMs in polymer matrix mixed with building wallboard [6, 7] and (2) impregnation of building wallboard in molten PCMs [8, 9]....
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TL;DR: A comprehensive review of various possible methods for heating and cooling in buildings is discussed in this article, where the thermal performance of various types of systems like PCM trombe wall, PCM wallboards, and PCM shutters are presented.
Abstract: A comprehensive review of various possible methods for heating and cooling in buildings are discussed in this paper. The thermal performance of various types of systems like PCM trombe wall, PCM wallboards, PCM shutters, PCM building blocks, air-based heating systems, floor heating, ceiling boards, etc., is presented in this paper. All systems have good potential for heating and cooling in building through phase change materials and also very beneficial to reduce the energy demand of the buildings.
933 citations
"Capric acid and stearic acid mixtur..." refers background in this paper
...a potential technology for reducing energy consumption in buildings [5]....
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