Thermal performance analysis of an existing building heating based on a novel active phase change heater

Zhang, Wei; Zhang, Nan; Yuan, Yanping; Phelan, Patrick E.; Attia, Shady

doi:10.1016/j.enbuild.2022.112646

Cited by 7 publications

(3 citation statements)

References 41 publications

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“…The coaxial borehole heat exchanger system for application in solar borehole TES system was numerically investigated by Pokhrel et al 21 The proposed numerical model could provide the holistic approach for estimation of the solar heat collection, geothermal heat storage/extraction and heat loss phenomenon. Zhang et al 22 proposed the active phase change heater to accomplish heating demand towards an existing building with marine climate.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer investigation on the thermal energy storage using phase change material in low-carbon building

Xia,

Li,

XiangLi

et al. 2024

Building Services Engineering Research and Technology

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The use of high-conductivity porous medium is an effective method to enhance the heat transfer rate of phase change material (PCM) in thermal energy storage (TES), reducing the energy consumption of low-carbon buildings. This paper establishes a solid-liquid phase change lattice Boltzmann model of a TES unit and investigates the effects of Rayleigh number, inclination angle, porous array, and porosity. The findings indicate that inserting the porous medium enhances conductive heat transfer and weakens convective heat transfer. When the Rayleigh number is increased from 103 to 104, the liquid fraction increases by 3.0%, while an increase from 104 to 105 only results in a 1.6% increase, suggesting a diminishing effect of increasing the Rayleigh number. Results also show that the inclination angle can be disregarded in this study. Furthermore, increasing the specific surface area enhances conductive heat transfer. However, when the array n is changed to 7, the fastest variation of liquid fraction is obtained among the range from 5 to 9. Increasing the porosity will delay the moment that temperature standard deviation reaches to the maximum, getting the temperature distribution more nonuniform. The findings from this paper are valuable for the design of TES systems in low-carbon buildings. Practical application The porous medium can enhance heat transfer in the phase change process. In the field of low-carbon buildings, porous medium is applied to strengthen the energy storage rate. By investigating the parameters of the Rayleigh numbers, inclination angles, porosities and arrangement of porous medium arrays of the composed energy storage unit, the regularity of the effects on the energy characteristics are obtained, which would provide some valuable practice references for designing these parameters of the energy storage units in the future energy-efficient building sector.

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Section: Introductionmentioning

confidence: 99%

Heat transfer investigation on the thermal energy storage using phase change material in low-carbon building

Xia,

Li,

XiangLi

et al. 2024

Building Services Engineering Research and Technology

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“…TIR cameras have significantly lower resolution than RGB cameras, and the color contrasts do not necessarily match the physical boundaries of the captured object. Therefore, the interpretation of TIR images is often facilitated by fusing them with RGB images (Zhang et al, 2023) or with 3D point cloud data or digital building models (Hoegner and Stilla, 2018).…”

Section: Introductionmentioning

confidence: 99%

360-Degree Tri-Modal Scanning: Engineering a Modular Multi-Sensor Platform for Semantic Enrichment of BIM Models

Collins,

Noichl,

Slepicka

et al. 2024

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. Point clouds, image data, and corresponding processing algorithms are intensively investigated to create and enrich Building Information Models (BIM) with as-is information and maintain their value across the building lifecycle. Point clouds can be captured using LiDAR and enriched with color information from images. Complementary to such dual-sensor systems, thermography captures the infrared light spectrum, giving insight into the temperature distribution on an object’s surface and allowing a diagnosis of the as-is energetic health of buildings beyond what humans can see. Although the three sensor modes are commonly used in pair-wise combinations, only a few systems leveraging the power of tri-modal sensor fusion have been proposed. This paper introduces a sensor system comprising LiDAR, RGB, and a radiometric thermal infrared sensor that can capture a 360-degree range through bi-axial rotation. The resulting tri-modal data is fused to a thermo-color point cloud from which temperature values are derived for a standard indoor building setting. Qualitative data analysis shows the potential for unlocking further object semantics in a state-of-the-art Scan-to-BIM pipeline. Furthermore, an outlook is provided on the cross-modal usage of semantic segmentation for automatic, accurate temperature calculations.

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“…Therefore, it is necessary to design an optimal building envelope to reduce energy consumption in buildings that depend on several parameters, by studying the properties of building materials in which solar absorptivity, moisture permeability and insulation type are the most influential thermal variables [1]. Several researches provide an approach to evaluate the most appropriate building system to be selected in the early stages of design, leading to the use of a more environmentally, economically and socially sustainable building material [11] and new application model to regulate energy consumption in building [12]. Faced with these constraints, we have seen in recent years, research efforts in the development of new construction methods using local materials in order to provide an adequate response to this crisis in developing countries.…”

Section: Introductionmentioning

confidence: 99%

Thermal Performance Analysis of Plaster Reinforced with Raffia Vinifera Particles for Use as Insulating Materials in Building

Malbila,

Tagne,

Imbga

et al. 2024

JMMCE

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J. Minerals and Materials Characterization and Engineeringgives an average damping of 4˚C and 5.8˚C in the insulated house interior environment respectively for cold and hot cases compared to the outside environment and the uninsulated house interior environment. The current study highlights that this mixture gives the new composite thermal insulation properties applicable in the eco-construction of habitats in tropical environments.

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Thermal performance analysis of an existing building heating based on a novel active phase change heater

Cited by 7 publications

References 41 publications

Heat transfer investigation on the thermal energy storage using phase change material in low-carbon building

Heat transfer investigation on the thermal energy storage using phase change material in low-carbon building

360-Degree Tri-Modal Scanning: Engineering a Modular Multi-Sensor Platform for Semantic Enrichment of BIM Models

Thermal Performance Analysis of Plaster Reinforced with Raffia Vinifera Particles for Use as Insulating Materials in Building

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