An experimental and numerical analysis of a novel water blind-Trombe wall system

Zhen, Hu; Zhang, Sheng; Hou, Jingxin; He, Wei; Li, Xianghua; Yu, Cairui; Zhu, Jianwei

doi:10.1016/j.enconman.2019.112380

Cited by 35 publications

(12 citation statements)

References 40 publications

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“…The water blind‐Trombe wall system developed by Zhongting Hu et al is another new Trombe wall design. This wall can offer the possibility of space heating, ventilation, and domestic hot water and it can reduce by 42.6% the overall thermal load yearly 27 …”

Section: Introductionmentioning

confidence: 99%

Optimum Trombe wall thickness in the Mediterranean Tunisian context: An energetic and economic study

Abbassi

Naili

Dehmani

2022

Energy Science & Engineering

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Trombe walls figure among many passive devices used in the Mediterranean climate to minimize heating demands in residential buildings. The thickness of this massive wall is a critical parameter that influences the effectiveness of the system. Insufficient wall thickness conducts to an important interior temperature fluctuation, and huge wall thickness will increase costs and thermal resistance. In this paper, the optimum thickness of four different construction materials (concrete, stone, adobe, and brick), which can be used in the Trombe wall, was determined using an energetic and economic analysis. The energetic results with TRNSYS software show that the best materials, which can contribute to a reduction by 50% in heating loads of a single room, are stone and concrete. For the economic analysis, the life cycle cost and the payback period were calculated for each construction material. The results show that the optimum thickness for stone and concrete are, respectively, 34 and 32 cm with a payback period of 2.85 and 2.65 years.

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Section: Introductionmentioning

confidence: 99%

Optimum Trombe wall thickness in the Mediterranean Tunisian context: An energetic and economic study

Abbassi

Naili

Dehmani

2022

Energy Science & Engineering

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“…This point is since a double-glazed skin can reflect and absorb some part of the spectrum of solar radiation; consequently, the most efficient is the use of double-glazing skin with low-emittance in the façade (Prieto et al, 2018;Zalewski et al, 2002). Among the other most critical aspects studied in the literature are the following: Air gap (Chen et al, 2006;Du et al, 2020b;Parhizkar et al, 2020), Massive wall and Heat insulation (Hu et al, 2020;Liu et al, 2020;Nizovtsev et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Study of Four Passive Second Skin Façade Configurations as a Natural Ventilation System During Winter and Summer

Hamidi

Malha

Bah

2021

sace

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The fight against climate change is a significant challenge, resulting mainly from the linear and extensive exploitation of natural resources, particularly fossil fuels. Its impacts are now recognized. The current climate models are neither sustainable nor ecological in economic and social terms, especially as we live in a century marked by galloping demography and urbanization. Researchers worldwide have paid great attention to passive solar design strategies such as double skin or Second Skin Façade. From this point, the present work aims to contribute to a better understanding of the feasibility of using a passive façade as a useful technology for natural ventilation to achieve potential energy savings and improve thermal comfort and indoor air quality. For this purpose, a parametric study was conducted for a room with four different southern facade configurations in six Moroccan climatic zones; the difference between each lies in the vent's position in the entrance and exit. This process was done by using COMSOL Multiphysics software. Velocity and volume flow rate fields were analyzed. The proposed configurations provided an average volume flow rate between 200 m3/h and 400 m3/h for a surface of 1 m2 of southern façade with an air vent area of 0.1mx0.2m.

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“…The significance to investigate the Pr > 1 fluids for the scenario considered in this study is due to their numerous occurrences in nature and in practical applications. The most notable example is on the water thermal storage Trombe wall in a solar house where the absorbed sinusoidal solar radiation heats the water, which is of Pr

~ 7.5

serving as a thermal storage medium, to form an unsteady NCBL flow 2,37–39 . Another example is the unsteady NCBL flow of fresh or seawater (

7.2 ≲ Pr ≲ 13.4

) on the sidearm of a reservoir or ocean which is also caused by the absorbed sinusoidal solar radiation 40,41 .…”

Section: Introductionmentioning

confidence: 99%

“…The most notable example is on the water thermal storage Trombe wall in a solar house where the absorbed sinusoidal solar radiation heats the water, which is of Pr ~7.5 serving as a thermal storage medium, to form an unsteady NCBL flow. 2,[37][38][39] Another example is the unsteady NCBL flow of fresh or seawater ( ≲ ≲ 7.2 Pr 13.4) on the sidearm of a reservoir or ocean which is also caused by the absorbed sinusoidal solar radiation. 40,41 Much higher Pr fluids have also been studied for many practical applications involving unsteady NCBL flows, such as engine oil nanofluids ( ≲ ≲ 10 Pr 1000) 42 and glycerin and its mixtures with water ( ≲ ≲ 50 Pr 10000).…”

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confidence: 99%

Scaling laws for natural convection boundary layer of a Pr > 1 fluid on a vertical solid surface subject to a sinusoidal heating flux in a linearly stratified ambient

2021

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The understanding of the transient behavior of the natural convection boundary layer on a heated vertical solid surface is crucial for numerous applications. In this study, scaling analysis is performed to derive the scaling laws for the major parameters that characterize the transient behavior of natural convection boundary layer of a Prandtl number larger than 1 fluid on a vertical solid surface subject to a sinusoidal heating flux in a linearly stratified ambient. It is found that the developed scaling laws are in good agreement with the direct numerical simulation results over wide ranges of Prandtl number, stratification parameter, and frequency of the sinusoidal heat flux.

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An experimental and numerical analysis of a novel water blind-Trombe wall system

Cited by 35 publications

References 40 publications

Optimum Trombe wall thickness in the Mediterranean Tunisian context: An energetic and economic study

Optimum Trombe wall thickness in the Mediterranean Tunisian context: An energetic and economic study

Study of Four Passive Second Skin Façade Configurations as a Natural Ventilation System During Winter and Summer

Scaling laws for natural convection boundary layer of a Pr > 1 fluid on a vertical solid surface subject to a sinusoidal heating flux in a linearly stratified ambient

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