Performance of the wall implanted with heat pipes on indoor thermal environment

Zhang, Zhigang; Wu, Ming Chang; Yao, Wanxiang

doi:10.1177/1420326x211027614

Cited by 7 publications

(5 citation statements)

References 47 publications

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“…Hence, a new type of Trombe wall was modified by using PCMs as a storage material. 86,87 The recent literature investigated PCM-Trombe walls 88,89 and confirmed the reduction in energy use and improvement in the interior temperature.…”

Section: Pcm-double-skin Facade (Pcm-dsf)mentioning

confidence: 73%

A conceptual framework for phase change material integration in building components

Ismail

Megahed

Eltarabily

2023

Indoor and Built Environment

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With the recent dramatic growth of the building sector’s energy consumption to provide thermal comfort to consumers, the constraints of climate change and the scarcity of energy supplies have necessitated a wiser and more effective reduction in the amount consumed. As a result, phase change materials (PCMs) have attracted much interest as latent heat thermal storage systems in recent decades. This paper aims to explain the possibility of using PCMs in buildings by establishing an overall conceptual framework for the processes of selecting and integrating PCMs in building sector applications. Moreover, it leads to a comprehensive matrix that identifies the best and most common type of material for each building’s component, as well as its temperature and thickness properties, its thermal impact, and the most popular integration techniques. The findings show paraffin as the major used type in all building components, while salt hydrate is employed in facades. The most prevalent incorporating technique is macro-encapsulation, which prevails in most building components with its direct effect on cooling and heating applications.

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Section: Pcm-double-skin Facade (Pcm-dsf)mentioning

confidence: 73%

A conceptual framework for phase change material integration in building components

Ismail

Megahed

Eltarabily

2023

Indoor and Built Environment

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“…A frequent task that occurs within the building thermal technology concerns the determination and elimination of heat losses. [1][2][3][4] Building envelopes with their facades represent one of the main factors influencing the effective thermal performance of buildings. The computations of the heat losses of buildings are standardized.…”

Section: Introductionmentioning

confidence: 99%

Are the local sky temperature models and the global thermal standard model EN ISO 6946(2017) numerically compatible?

Ficker

2023

Indoor and Built Environment

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Local sky temperature models are often used by researchers to improve the estimation of building heat losses. Besides the local sky temperature models, there is a global temperature model implemented in EN ISO 6946(2017) that may also produce reasonable results if it is conveniently applied. To assess the competitiveness of global and local models, it is desirable to perform a direct numerical comparison of their results. Such a comparison has not been published so far. This study aims to analyze the computational differences between three models of sky temperature, namely, the Swinbank model, the universal model and the standard model implemented in EN ISO 6946(2017). The study verifies the robustness of the global thermal standard model to account for the acting of the cold sky on building envelopes compared to local sky models specially designed for this purpose. The quasi-nocturnal conditions are supposed to reveal the main features of the long-wave infrared interactions between the building facade and the sky. The study has proved the capability of the global standard model to successively compete with the local sky temperature models at least within the conditions of the quasi-nocturnal environment.

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“…Ivanov et al [ 17 ] revealed a numerical study of the risk of condensation over the exterior wall of a typical residential room, and the resulting surface and dew point temperature distribution are derived over the simulated exterior wall. Zhigang et al [ 18 ] studied the dynamic heat transfer characteristics of the wall with heat pipes implanted in transition season and its influence on the indoor thermal environment. Xie et al [ 19 ] studied the performance of capillary ceiling cooling panels on ceiling surface temperature and indoor thermal environment.…”

Section: Introductionmentioning

confidence: 99%

Influence of geographical location and outdoor meteorological parameters on indoor humidity environment in rural residential buildings during the Plum Rains Season in the hot summer and cold winter region

He,

Zhou,

Liu

et al. 2023

PLoS ONE

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Plum Rains Season (PRS) has the typical characteristics of outdoor air temperature dramatic changes and high air humidity in the hot summer and cold winter region in China. When the outdoor temperature rises rapidly during PRS, the building envelope surface temperature is probably lower than the indoor air dew point temperature, resulting in moisture condensation. This paper evaluates the influence of geographical location and outdoor meteorological parameters on the indoor humidity environment. The effects of critical parameters such as altitude, average temperature, relative humidity, total precipitation, total precipitation days, atmospheric pressure, and wind speed on the building envelope moisture condensation in nine typical cities in the hot summer and cold winter region were simulated and analyzed. The results show that the Condensation Frequency (CFn) in the western, central, and eastern regions reached the highest in April, May, and June, respectively. Among the nine typical cities, Changsha has the highest Condensation Risk (CR). In addition, the altitude, total precipitation, and atmospheric pressure have little effect on the indoor humidity environment, and it is not directly related to CR; The average temperature and total precipitation days were not related to CR in the western and eastern regions and positively correlated with CR in the central region; The wind speed was positively correlated with CR in the western and central regions and negatively correlated in the eastern region; The relative humidity can affect the indoor humidity environment and moisture condensation on the inner surface of walls, when the relative humidity increases, the CR increases.

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Performance of the wall implanted with heat pipes on indoor thermal environment

Cited by 7 publications

References 47 publications

A conceptual framework for phase change material integration in building components

A conceptual framework for phase change material integration in building components

Are the local sky temperature models and the global thermal standard model EN ISO 6946(2017) numerically compatible?

Influence of geographical location and outdoor meteorological parameters on indoor humidity environment in rural residential buildings during the Plum Rains Season in the hot summer and cold winter region

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