Diurnal thermal analysis of microencapsulated PCM-concrete composite walls

Thiele, Alexander M.; Sant, Gaurav; Pilon, Laurent

doi:10.1016/j.enconman.2014.12.078

Cited by 116 publications

(74 citation statements)

References 41 publications

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“…PCMs store energy in the form of latent heat by reversibly changing phase between solid and liquid states. As a result, adding PCM to building walls reduces energy demand for heating and cooling and time-shifts the maximum daily thermal load on the building [9]. This can help ratepayers take advantage of TOU electricity rate schedules while reducing the ecological footprint of buildings [10].…”

Section: Introductionmentioning

confidence: 98%

Annual energy analysis of concrete containing phase change materials for building envelopes

Thiele

Jamet

Sant

et al. 2015

Energy Conversion and Management

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Section: Introductionmentioning

confidence: 98%

Annual energy analysis of concrete containing phase change materials for building envelopes

Thiele

Jamet

Sant

et al. 2015

Energy Conversion and Management

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“…The purpose of using microencapsulation in building 93 applications is likely to protect sensitive materials from their environment, to make active 94 materials easier and/or safer and to handle to reduce reactivity and to improve thermal properties For especially passive building applications the melting point of the PCM has to be near the 143 comfort zone. In the parametric study by , it was shown that phase change 144 temperature for maximum energy flux reduction was equal to the desired indoor temperature 145 regardless of the climate conditions [15]. However, desired indoor conditions are very dependent 146 on climate conditions so is the PCM performance.…”

mentioning

confidence: 98%

Review on using microencapsulated phase change materials (PCM) in building applications

Konuklu

Ostrý

Paksoy

et al. 2015

Energy and Buildings

330

139

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“…For example, these properties determine the heat flow into and out of the building as well as the maximum and time lag in the building thermal load [11,12].…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity of cementitious composites containing microencapsulated phase change materials

Ricklefs

Thiele

Falzone³

et al. 2017

International Journal of Heat and Mass Transfer

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This thesis investigates the effects of adding microencapsulated phase change materials (PCM) on the thermal conductivity of cement paste and cement mortar composites. Embedding cementitious composites with microencapsulated PCM has been considered a promising method for increasing the thermal mass of buildings to achieve greater energy efficiency. Cement paste and cement mortar samples were synthesized with a constant water to cement ratio of 0.45. Both contained microencapsulated PCM with diameter ranging from 17-20 µm, volume fraction up to 30%, and a melting temperature around 24˚C. The cement mortar also contained quartz grains 150-600 µm in diameter such that the sum of the volume fractions of quartz and microencapsulated PCM was fixed at 55%.All samples were aged for more than 28 days. Their effective density and free moisture content were systematically measured. A guarded hot plate apparatus was designed, assembled, and validated according to the ASTM C177 to measure the effective thermal conductivity of the aged specimens of cement paste and cement mortar without and with microencapsulated PCM. Measurements were 2 performed between 10 and 40˚C, encompassing the entire PCM phase change temperature window. The effective thermal conductivity of both the cement paste and the cement mortar composites was found to be nearly independent of temperature in the range considered. It also decreased as the volume fraction of microencapsulated PCM increased. Finally, excellent agreement was obtained between experimental data and the effective medium approximation derived by Felske (2004) for core-shell-matrix composites. 3The thesis of Alex Ricklefs is approved.

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Diurnal thermal analysis of microencapsulated PCM-concrete composite walls

Cited by 116 publications

References 41 publications

Annual energy analysis of concrete containing phase change materials for building envelopes

Annual energy analysis of concrete containing phase change materials for building envelopes

Review on using microencapsulated phase change materials (PCM) in building applications

Thermal conductivity of cementitious composites containing microencapsulated phase change materials

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