Theoretical and Experimental Contributions on the Use of Smart Composite Materials in the Construction of Civil Buildings with Low Energy Consumption

Bendic, Vasile; Dobrotă, Dan

doi:10.3390/en11092310

Cited by 12 publications

(8 citation statements)

References 30 publications

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“…One of the methods is to use latent thermal energy storage systems into building envelopes to provide a balance between diurnal and nocturnal energy consumption [9,10]. Phase change materials (PCMs) are materials which can absorb a great amount of energy by means of latent heat when they experience a change in the physical state (from liquid to solid and vice versa); thus they are used to minimize energy consumption in buildings [11,12].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Energy Efficiency of PCM‐Integrated Lightweight Steel‐Framed Building in Eight Different Cities of Warm Summer Humid Continental Climate

Jangeldinov

Memon

Kim

et al. 2020

Advances in Materials Science and Engineering

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Phase change materials have been applied to a building framework to decrease energy and fossil fuel consumption as well as make the building sector more sustainable. Lightweight structures are attractive and increasingly being used in residential buildings. Hence, in this research, the energy efficiency and thermal performance of buildings located in eight various cities (Helsinki, Kiev, Saint Petersburg, Moscow, Stockholm, Toronto, Montreal, and Kiev) of warm summer humid continental climate (Dfb) were evaluated. The impact of heating and cooling energy savings pattern on the selection of optimum phase change material for each city has been demonstrated. In addition, the impact of volume of PCM, precisely the effect of varying and constant volume, on energy savings was assessed for the lightweight steel-framed building. Simulations were performed in EnergyPlus by applying eleven melting temperature ranges of PCM. Test results demonstrated that energy savings were higher in the swing season and the maximum temperature reduced during these months was 3.3°C. Heating and cooling energy savings were found to strongly influence the selection of optimum PCM. In cities where cooling energy savings were the highest, the optimum PCMs were PCMs 24-26 while in cities where heating energy savings were the highest, the optimum PCM was found to be PCM 21. For constant volume, the performance of optimum PCM raised when the surface area was enlarged, while the thickness of PCM was reduced. Overall, the application of PCM into lightweight steel-framed residential structure located in warm summer humid continental climate region is a feasible option.

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Section: Introductionmentioning

confidence: 99%

Evaluating the Energy Efficiency of PCM‐Integrated Lightweight Steel‐Framed Building in Eight Different Cities of Warm Summer Humid Continental Climate

Jangeldinov

Memon

Kim

et al. 2020

Advances in Materials Science and Engineering

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“…The use of these materials offers a maximum benefit when applied to buildings insulated with lightweight material as they have small intrinsic storage capacity. Thus, in order to achieve isolation with light energy efficiency, the following conditions must be met: reduced external energy exchange ensured by thermal insulation; the use of renewable energy sources; the reduction of energy requirements by using phase-changing materials [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Methods for Determining the Thermal Transfer in Phase-Changing Materials (PCMs)

et al. 2020

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A very important issue that needs to be solved as simply and correctly as possible is how to establish the thermal performance of phase-changing materials (PCM). The undertaken researches have analyzed the values of the thermal performances of the PCM taking into account the method of finite elements and the experimental research, respectively, based on a modern measurement system that was designed and implemented. Butyl stearate which has been encapsulated through complex coacervation in polymethyl methacrylate has been used as a PCM. Samples were made containing 10%, 20%, 30% and 40% PCM, respectively, within their structure. The research has established that at both the hot plate and the cold plate interface, the evolution of the temperature over time, established by both the finite element method (FEM) and experimental research, are quite close, and the best results have been obtained for the P30 sample. A very important thing observed during the finite element method (FEM) is that the simulated thermal flow variation extends between 2700-3110W/m2 being small enough not to influence the temperature measurement at the interface of hot or cold plates. Thus, the use of the FEM or the experimental research method can be applied with good results, provided that the correct initial conditions are used in the finite element method and that the experimental research is performed using the best possible apparatus.

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“…The use of renewable energy sources has the greatest potential in this area, be it solar, water, wind, or air energy. One of the possibilities is to store thermal energy and to use it subsequently [10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the use of various materials for the construction of an enthalpy exchanger

Kozák

Košičanová

2020

Selected Scientific Papers - Journal of Civil Engineering

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Considering the current gradual depletion of non-renewable primary sources, it is necessary to address the reduction of energy consumption in ventilation and air conditioning systems. Although heat recovery alone reduces the energy intensity of these systems, if moisture recovery is considered as well, the contribution in reducing energy consumption is significant. These are mainly the devices designed primarily for spaces where people stay permanently, which do not allow large fluctuations in temperature and humidity. In cooperation with the manufacturer of heat recovery exchangers, we determined our own method of comparing different types of materials that could be used to design an exchanger which would also allow moisture recovery. These results in a significant reduction in energy consumption used to humidify the air in ventilation and air conditioning systems. It is one of the possible ways how to compare individual samples that are being measured. This article primarily deals with the comparison of three different types of materials, out of the total number of twelve measured samples.

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Theoretical and Experimental Contributions on the Use of Smart Composite Materials in the Construction of Civil Buildings with Low Energy Consumption

Cited by 12 publications

References 30 publications

Evaluating the Energy Efficiency of PCM‐Integrated Lightweight Steel‐Framed Building in Eight Different Cities of Warm Summer Humid Continental Climate

Evaluating the Energy Efficiency of PCM‐Integrated Lightweight Steel‐Framed Building in Eight Different Cities of Warm Summer Humid Continental Climate

Methods for Determining the Thermal Transfer in Phase-Changing Materials (PCMs)

Investigation of the use of various materials for the construction of an enthalpy exchanger

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