A new method to determine thermophysical properties of PCM-concrete brick

Cheng, Rui; Pomianowski, Michal Zbigniew; Wang, Xin; Heiselberg, Per; Zhang, Yinping

doi:10.1016/j.apenergy.2013.01.046

Cited by 67 publications

(32 citation statements)

References 17 publications

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“…Recently, Camila et al [10] developed two devices to characterise effective thermal conductivity and thermal response of real materials at macroscale and found that there were different optimal weight ratios between the PCMs and different supporting materials. Chen et al [11] also developed a new method to measure the thermophysical properties of PCM-concrete brick for engineering use and their method is also suitable for the measurement of PCMWs. The thermal performance of PCMWs can be measured by different criteria.…”

Section: Introductionmentioning

confidence: 99%

Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW)

2014

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Abstract:Incorporating Phase Change Materials (PCMs) into traditional building structures has been considered as an effective way to reduce the mismatch between energy supply and demand and in turn to minimise energy consumption (cooling/heating energy). For building applications, Phase Change Material Wallboards (PCMWs) are of particular interest due to their easy installation to existing buildings for refurbishment. Both interior and exterior PCMWs are investigated in this paper, with a numerical study examining the effects of wallboard thermal properties on its thermal performance. These influencing factors include melting temperature, melting range, latent heat, thermal conductivity and surface heat transfer coefficient. An effective heat capacity model is adopted to consider latent heat with the model validated by an experiment. Inner surface temperature and diurnal energy storage are chosen as the evaluation criteria when comparing the thermal performance between different PCMWs. By analysing the effects of influencing factors on the system thermal performance, this study serves as a useful guide for selection of PCMs in energy-efficient buildings.

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Section: Introductionmentioning

confidence: 99%

Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW)

2014

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“…As reported in Cheng et al [28], the thermophysical properties could be determined by the sample mass. For this reason, such tests are necessary to compare the thermophysical properties obtained by means of the procedure, with those provided by the manufacturer and those obtained with the DSC characterization.…”

Section: Determination Of the Pcm Thermophysical Propertiesmentioning

confidence: 90%

“…The use of these models requires the knowledge of the effective thermophysical properties of the layer, measurable with the most widespread experimental methods, namely DSC (Differential Scanning Calorimeter) technique developed by Watson et al [25], and the T-History method proposed by Zhang et al [26], or with new techniques [27,28] proposed in trecent years.…”

Section: Introductionmentioning

confidence: 99%

Experimental validation of the exact analytical solution to the steady periodic heat transfer problem in a PCM layer

Mazzeo

Oliveti

Gracia

et al. 2017

Energy

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Phase change materials (PCM) are used in many industrial and residential applications for their advantageous characteristic of high capacity of latent thermal storage by means of an isothermal process. In this context, it is very useful to have predictive mathematical models for the analysis of the thermal performance and the thermal design of these layers. In this work, an experimental validation of an analytical model that resolves the steady periodic heat transfer problem in a finite layer of PCM is presented. The experimental investigation was conducted employing a PCM with thermophysical and thermochemical behavior very close to those hypothesized in the formulation of the analytical model. For the evaluation of the thermophysical properties of the PCM sample used, an experimental procedure created by the authors was employed. In all tests realized in a sinusoidal and non-sinusoidal periodic regime, the comparison between the measured and calculated trends of the temperature at different sample heights and of the surface heat fluxes show an excellent agreement. Moreover, also having verified the analytical total stored energy, the analytical model constitutes a valid instrument for the evaluation of the latent and sensible contribution and the trend in time of the position of the bi-phase interface.

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“…If the wall made of brick with PCM is capable of considerably reducing the heat gain, the objective of reducing the heat gain using brick with PCM is achieved. To determine the equivalent specific heat with the temperature of PCM-concrete brick, Cheng, Pomianowski, Wang, Heiselberg, & Zhang (2013) propose a technique in which complex experimental installations are not required. The required needed data are only the top heat flux and the temperature distributions in different layers.…”

Section: Experimental Methodsmentioning

confidence: 99%

The design, properties, and performance of concrete masonry blocks with phase change materials

Alawadhi

2015

Eco-Efficient Masonry Bricks and Blocks

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A new method to determine thermophysical properties of PCM-concrete brick

Cited by 67 publications

References 17 publications

Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW)

Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW)

Experimental validation of the exact analytical solution to the steady periodic heat transfer problem in a PCM layer

The design, properties, and performance of concrete masonry blocks with phase change materials

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