PCM thermal storage in buildings: A state of art

Tyagi, V.V.; Buddhi, D.

doi:10.1016/j.rser.2005.10.002

Cited by 864 publications

(305 citation statements)

References 43 publications

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“…The first approximation proposed by Peippo et al [24], as shown in Equation (1), could be useful for determining the near optimal melting temperature of PCMs (T PCM,opt ) to be used in building envelopes. PCMs to be considered for building applications should have large latent heat of fusion, high specific heat and thermal conductivity, minimum sub-cooling, and be chemically stable, nontoxic, non-flammable and non-corrosive [25,26]. A summary of major PCMs suitable for building applications can be found in Refs.…”

Section: Materials Selectionmentioning

confidence: 99%

Nano-enhanced phase change materials for improved building performance

Lin

Sohel

2016

Renewable and Sustainable Energy Reviews

149

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Nano-enhanced phase change materials (PCMs) have attracted increasing attention to address one of the key barriers (i.e. low thermal conductivity) to the wide adoption of PCMs in many industrial applications. This paper discusses the generic problem and key issues associated with appropriately using this new class of materials in buildings for effective thermal management and improved energy performance. An overview on major recent development and application of nano-enhanced PCMs as thermal energy storage media is provided. A case study based on a PCM ceiling ventilation system integrated with solar photovoltaic thermal (PVT) collectors is then performed to evaluate the potential benefits due to the dispersion of copper nanoparticles into the PCM base fluid of RT24. The results showed that this nano-enhanced PCM has higher melting and solidification rates than that of the pure PCM. Compared to the use of the pure PCM, 8.3% more heat was charged in and 25.1% more heat was discharged from the nano-enhanced PCM under the three winter test days. More research is needed to understand the fundamental mechanisms behind the PCM thermal conductivity enhancement through the dispersion of nanometer-sized materials and to investigate how these mechanisms drive building performance enhancement. Abstract: Nano-enhanced phase change materials (PCMs) have attracted increasing attention to address one of the key barriers (i.e. low thermal conductivity) to the wide adoption of PCMs in many industrial applications. This paper discusses the generic problem and key issues associated with appropriately using this new class of materials in buildings for effective thermal management and improved energy performance. An overview on major recent development and application of nano-enhanced PCMs as thermal energy storage media is provided. A case study based on a PCM ceiling ventilation system integrated with solar photovoltaic thermal (PVT) collectors is then performed to evaluate the potential benefits due to the dispersion of copper nanoparticles into the PCM base fluid of RT24. The results showed that this nano-enhanced PCM has higher melting and solidification rates than that of the pure PCM. Compared to the use of the pure PCM, 8.3% more heat was charged in and 25.1% more heat was discharged from the nano-enhanced PCM under the three winter test days. More research is needed to understand the fundamental mechanisms behind the PCM thermal conductivity enhancement through the dispersion of nanometer-sized materials and to investigate how these mechanisms drive building performance enhancement.

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Section: Materials Selectionmentioning

confidence: 99%

Nano-enhanced phase change materials for improved building performance

Lin

Sohel

2016

Renewable and Sustainable Energy Reviews

149

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“…Regarding building applications, PCMs should have a melting/solidification temperature in the practical range of application, high latent heat of fusion and improved thermal conductivity [9]. PCMs should also have desirable thermophysical, kinetic, chemical, economic and environmental properties, as pointed out by several authors [9,[78][79][80][81][82][83][84][85][86]. The optimum incorporation of PCMs within construction systems and the evaluation of the energy performance of the building with these elements is very complex and challenging.…”

Section: Phase Change Materialsmentioning

confidence: 99%

“…Indeed, many review articles devoted to the description of construction solutions with PCMs and their thermal performance analysis can be found in literature [9,75,[78][79][80][81]83,84,[166][167][168][169][170][171][172][173][174][175][176][177][178][179]. An updated review on PCMs integrated into transparent building elements was recently carried out by Fokaides et al [180].…”

Section: Phase Change Materialsmentioning

confidence: 99%

Energy efficiency and thermal performance of lightweight steel-framed (LSF) construction: A review

Soares

Santos

Gervásio

et al. 2017

Renewable and Sustainable Energy Reviews

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The improvement of the use of renewable energy sources, such as solar thermal energy, and the reduction of energy demand during the several stages of buildings' life cycle is crucial towards a more sustainable built environment. This paper presents an overview of the main features of lightweight steel-framed (LSF) construction with cold-formed elements from the point of view of life cycle energy consumption. The main LSF systems are described and some strategies for reducing thermal bridges and for improving the thermal resistance of LSF envelope elements are presented. Several passive strategies for increasing the thermal storage capacity of LSF solutions are discussed and particular attention is devoted to the incorporation of phase change materials (PCMs). These materials can be used to improve indoor thermal comfort, to reduce the energy demand for air-conditioning and to take advantage of solar thermal energy. The importance of reliable dynamic and holistic simulation methodologies to assess the energy demand for heating and cooling during the operational phase of LSF buildings is also discussed. Finally, the life cycle assessment (LCA) and the environmental performance of LSF construction are reviewed to discuss the main contribution of this kind of construction towards more sustainable buildings.

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“…Along with increased interest in the demand side energy management [4][5][6], to save costs in energy generation and plant construction and increase gird resilience, many studies have been conducted to reduce or shift peak load in buildings (e.g., [7][8][9][10][11]). Lee and Braun [7] proposed a model-based approach to minimize peak cooling load using building thermal mass and demonstrated that their proposed method can result in about 30% reduction in peak cooling loads for a particular building.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Lee and Braun [7] proposed a model-based approach to minimize peak cooling load using building thermal mass and demonstrated that their proposed method can result in about 30% reduction in peak cooling loads for a particular building. Applications of building thermal energy storage have been investigated to shift peak building thermal loads [8][9][10][11].…”

Section: Literature Reviewmentioning

confidence: 99%

Passive energy management through increased thermal capacitance

Carpenter

Mago

Luck

et al. 2014

Energy and Buildings

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Energy usage within the world is increasing at a drastic rate. Buildings currently consume a major amount of the total energy used within the United States, and most of this energy usage supports heating and cooling. This demand shows that new passive energy management systems are needed. The use of Increased Thermal Capacitance (ITC) is proposed as a new passive energy management system. To increase thermal capacitance, a piping system is either added into a building's walls or ceiling. In this paper, a building with ITC added is compared to a similar building without ITC using the simulation program TRNSYS. Along with a comparison between the walls and ceiling, several parameters are analyzed for their effect on the performance of the ITC. ITC was found to be effective especially when located in the ceiling, with the location, specific heat and tank size being the most important factors. iii ACKNOWLEDGEMENTS

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PCM thermal storage in buildings: A state of art

Cited by 864 publications

References 43 publications

Nano-enhanced phase change materials for improved building performance

Nano-enhanced phase change materials for improved building performance

Energy efficiency and thermal performance of lightweight steel-framed (LSF) construction: A review

Passive energy management through increased thermal capacitance

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