On the heat transfer rate reduction of structural insulated panels (SIPs) outfitted with phase change materials (PCMs)

Medina, Mario A.; King, Joan E.; Zhang, Meng

doi:10.1016/j.energy.2007.11.003

Cited by 120 publications

(48 citation statements)

References 2 publications

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“…Phase change materials (PCMs), which release or absorb thermal energy during melting and solidification processes, are believed to have outstanding capability to store a massive amount of heat efficiently during their phase change processes [1,2]. PCMs have been investigated in building applications [3][4][5][6], industrial waste heat recovery [7], solar collectors [8], solar power plants [9], high-efficient compact heat sinks [10], solar cookers [11,12] and solar stills [13]. Thermal stability investigations of PCMs have been conducted through implementing repeated thermal cycle tests [14,15].…”

Section: Introductionmentioning

confidence: 99%

A numerical investigation of heat transfer in phase change materials (PCMs) embedded in porous metals

YiShui

Zhao

2011

Energy

426

124

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The effects of metal foams on heat transfer enhancement in Phase Change Materials (PCMs) are investigated. The numerical investigation is based on the two-equation non-equilibrium heat transfer model, in which the coupled heat conduction and natural convection are considered at phase transition and liquid zones. The numerical results are validated by experimental data. The main findings of the investigation are that heat conduction rate is increased significantly by using metal foams, due to their high thermal conductivities, and that natural convection is suppressed owing to the large flow resistance in metal foams. In spite of this suppression caused by metal foams, the overall heat transfer performance is improved when metal foams are embedded into PCM; this implies that the enhancement of heat conduction offsets or exceeds the natural convection loss. The results indicate that for different metal foam samples, heat transfer rate can be further increased by using metal foams with smaller porosities and bigger pore densities. Keywords:Heat transfer enhancement; PCM; Metal foam; Thermal storage; Volume-averaged method; Non-thermal-equilibrium model.

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Section: Introductionmentioning

confidence: 99%

A numerical investigation of heat transfer in phase change materials (PCMs) embedded in porous metals

YiShui

Zhao

2011

Energy

426

124

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“…In selection of PCT, the maximum and minimum DBAT should be carefully examined because large temperature swing between day and night would provide PCM TSS with better performance [32]. For instance, the paraffin based PCM with PCT of 23-26°C did not work in summer in Greece because the lowest temperature was higher than the PCT of PCM [33].…”

Section: Dry Bulb Air Temperature (Dbat)mentioning

confidence: 99%

Selection of the Melting Temperature of Phase Change Materials Considering Local Climate

Lee

Liu

Saman

2017

WIT Transactions on Ecology and the Environment

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The selection of melting temperature of phase change materials (PCMs) is crucial part of PCM applications in building sector in order to achieve better thermal performance. This study examines various temperatures in Adelaide local climate such as conditioned indoor air temperature and outdoor dry/web bulb air temperature in order to find suitable melting temperature of PCM for passive and active application. According to the conditioned indoor temperature from ten houses in Adelaide, indoor air temperature is maintained between 15°C and 32°C with 22-23°C as an average. Average outdoor dry and web bulb air temperature is less than 18°C and 15°C, respectively. The temperature analysis demonstrates that the PCM with melting temperature around 22°C is assumed to be suitable for passive and free cooling system of residential buildings in Adelaide. On the other hand, the PCM for passive and free heating system is assumed not to work well during most of the day in winter because the outdoor air temperature during the winter lies under the thermal comfort range. Furthermore, the PCM thermal storage unit coupled with evaporative cooling system (EVAP-CS) is expected to increase energy efficiency of building by using outdoor cooled air during the summer night comparing to conventional vapour compression air conditioning system.

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“…The research group at the University of Kansas has focused on finding ways to incorporate PCMs in the insulation of building walls. For example, King [1,2] research focused on evaluating the thermal performance of PCMs in Structural Insulated Panels (SIPs) in field testing. For this, two identical test houses were built.…”

Section: A Brief History Of Pcm Research Work Done At the University mentioning

confidence: 99%

Estimation of Hourly Solar Loads on the Surfaces of Moving Refrigerated Tractor Trailers Outfitted With Phase Change Materials (PCMs) for Several Routes Across the Continental U.S.

Varadarajan¹,

Medina

2012

Volume 6: Energy, Parts a and B

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The primary objective of this paper was to calculate solar loads and wind chill temperatures on the surfaces of moving refrigerated tractor trailers outfitted with phase change materials (PCMs) for several routes across the Continental United States. As food transportation vehicles, these trucks experience different environmental conditions as they are in motion. The study of PCMs on food transportation vehicles could lead to new findings related to energy conservation. In this research work, a solar model was developed based on synthesized weather data files obtained from the National Solar Radiation Data Base (NSRDB), which contains weather information from 1961 through 1990 for 239 locations (TMY2 data) and weather information from 1991 through 2005 for 1020 locations (TMY3 data). The solar model comprised two parts, data extraction and solar load calculations. The data extraction part separated and picked out the required fields from the TMY data and used them in the solar load calculations program, which was used to estimate the solar loads and wind chill temperatures of every exposed surface of a moving tractor trailer. These solar loads, and wind chill temperatures would then be used in selecting the adequate type of PCMs for a particular route and time of year. In conventional cargo trucks, the refrigeration units are operated by burning fossil fuels, mainly diesel. Therefore, a decrease in refrigeration load would have an impact in fuel consumption and/or in the reduction in size of the refrigeration equipment’s.

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On the heat transfer rate reduction of structural insulated panels (SIPs) outfitted with phase change materials (PCMs)

Cited by 120 publications

References 2 publications

A numerical investigation of heat transfer in phase change materials (PCMs) embedded in porous metals

A numerical investigation of heat transfer in phase change materials (PCMs) embedded in porous metals

Selection of the Melting Temperature of Phase Change Materials Considering Local Climate

Estimation of Hourly Solar Loads on the Surfaces of Moving Refrigerated Tractor Trailers Outfitted With Phase Change Materials (PCMs) for Several Routes Across the Continental U.S.

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