Experimental study on the thermal performance of a wall coated with a phase-change, energy-storing mortar layer during summer

Tian, Guo Hua; Lv, Heng Lin; Huang, Jian; Liu, Peng; Feng, Wei

doi:10.1016/j.applthermaleng.2017.05.178

Cited by 19 publications

(2 citation statements)

References 18 publications

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“…A 2022 Research Report on China's Building Energy Consumption and Carbon Emissions shows that our country's total energy consumption nationwide has reached 45% of the total energy, and building energy consumption (energy consumed by heating, cooling, ventilation, hot water, lighting, household appliances, and cooking and other supplies) accounts for 21.3% of the total energy [1]. Among them, the energy consumption used for heating and cooling is upwards of 70% of building energy consumption [2][3][4][5]. The thermal performance of the building envelope plays a critical role in energy consumption for heating and cooling [6,7].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Thermal Response of the Lightweight Aggregate Concrete Panels Integrated with MPCM

Zhu,

Wang,

Sang

et al. 2024

Buildings

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This paper determines the best design parameters and uses conditions of lightweight aggregate concrete panels containing microencapsulated phase change materials (MPCM-LWAC panels). The main work of this paper includes the followings: (1) The fundamental properties (dry density, thermal conductivity, and specific heat capacity) of MPCM-LWAC were researched to reveal the effect of MPCM dosage on these properties. (2) A model test was carried out to quantify the effect of MPCM dosage on the thermal response of the MPCM-LWAC panel exposed to realistic climate conditions. (3) The numerical simulation was conducted to investigate the effect of MPCM dosage, panel thickness, and outdoor temperature conditions on the thermal response of the MPCM-LWAC panel, which helps to determine its optimum design parameters and use condition. The results showed that the incorporation of MPCM results in lower dry density and thermal conductivity of MPCM-LWAC but higher specific heat capacity. The more MPCM dosage in the MPCM-LWAC panel with a thickness of 35 mm, the lower the energy demand to keep a comfortable interior temperature. Most notably, when the panel thickness exceeds 105 mm, the MPCM-LWAC panel with 5% MPCM only delays the peak temperature. Moreover, the optimal use condition for MPCM-LWAC panels is an average outdoor temperature of 25 °C, which makes the energy demand attain a minimum.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Thermal Response of the Lightweight Aggregate Concrete Panels Integrated with MPCM

Zhu,

Wang,

Sang

et al. 2024

Buildings

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“…25,26 As a result, previous researchers have developed novel approaches to reduce the heating and cooling temperatures in buildings with the sensible form of building materials concrete, cement, fine aggregate, and coarse aggregate. 27 To overcome the CO 2 emissions in construction, novel materials have been introduced in brick, cement, and concrete, resulting in better thermal comfort and energy savings. 28 Figure 1 shows the model of wall and roof components during the daytime in the summer season.…”

Section: Introductionmentioning

confidence: 99%

Energy simulation and heat absorption of 3R cement in multivariable resource optimization to reduce temperature calefaction

Ravi,

Murugesan

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In recent years, most developing countries, the construction sector has been aware of sustainable building combinations of thermal comfort, low energy consumption and greenhouse gas emissions in the environment. About 90% of CO2 is released in construction building materials, in that cement plays an important role in releasing the large amount of carbon dioxide in the manufacturing process. Many researchers have focused on alternative materials in cement to reduce the raw material demand and sustainable building materials. A 3RC was developed by (aquamarine + industrial) waste materials introduced in cement to identify the performance. The study describes the thermal behavior of newly invented 3RC in concrete with different elements in the physical models to observe the temperature, sensible heat and relative humidity at 12-months using thermal sensors. The validated results are computationally evaluated using Design Builder software to prove that less than 2°C error from the observed data is similar. The results of the analysis showed that the thermal comfort, energy consumption and greenhouse gas satisfy the manufacturing of cement and had good adaptability in the overall performance of the building. The simulation models were observed for 12 months, and the energy consumption in future developing building sites was predicted.

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Super-adsorbent polyacrylate under swelling in water for passive solar control of building envelope

et al. 2019

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Super-adsorbent polymers have the capacity to immobilize huge quantities of water in the form of hydrogel, thanks to their configuration. A commercial sodium polyacrylate (PA) was analysed as such and at different water uptakes, indicated through the weight ratios PA:H 2 O. The hydrogels were prepared using different type of water (tap, distilled and deuterated) and characterized by Infrared and Raman spectroscopic analyses, nuclear magnetic resonance experiments, CHN elemental analysis, measurements of thermal conductivity and diffusivity. All the measurements were done in order to assess applications of PA:H 2 O gels as Thermal Energy Storage systems for improving thermal performances of building envelope through passive solar walls. It has been observed that the behaviour of the hydrogels depends both on temperature and water content. In certain conditions such as low weight ratios, a spontaneous and quick cooling of the hydrogel could be observed. The curves of heat flow and average specific heat (c p) were determined as a function of temperature in order to investigate the states of water in PA hydrogels. When a few water molecules are present, they are mainly and strongly bonded with carboxylate groups. Increasing the amount of water, greater shells of solvation around ionic groups form and water molecules can even interact with neighbouring non-polar hydrocarbon groups. At very high amount of water molecules, they are much more involved into H-bonds among themselves, rather than with PA, so that water pools form into the links of polymeric network. Bulk-like water can freeze and melt. Whatever the amount of water in the hydrogel, its thermal capacity is higher than dry polymer, because the heat can be absorbed by the continuous desorption of water from polymer to bulk-like water (water gel → water liquid), which can evaporate as temperature approaches 100 °C (water gel → water liquid → water vapour).

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Experimental study on the thermal performance of a wall coated with a phase-change, energy-storing mortar layer during summer

Cited by 19 publications

References 18 publications

Experimental and Numerical Study on the Thermal Response of the Lightweight Aggregate Concrete Panels Integrated with MPCM

Experimental and Numerical Study on the Thermal Response of the Lightweight Aggregate Concrete Panels Integrated with MPCM

Energy simulation and heat absorption of 3R cement in multivariable resource optimization to reduce temperature calefaction

Super-adsorbent polyacrylate under swelling in water for passive solar control of building envelope

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