Impact of plants occultation on energy balance: Experimental study

Kenai, Mohamed-Amine; Libessart, Laurent; Lassue, Stéphane; Defer, Didier

doi:10.1016/j.enbuild.2017.12.024

Cited by 17 publications

(13 citation statements)

References 37 publications

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“…Its usefulness was subsequently oriented to mainly counter the phenomenon of urban heat island which results in a temperature difference between a rural and urban area in the same region [2][3][4]. Most of the experiments in in-situ conditions on the thermal benefits of green walls make comparisons between buildings with or without green walls [5][6][7][8][9][10][11]. The results cannot be generalized, unless all the parameters that can influence the building's energy balance have been considered or measured, which is very complicated to achieve.…”

Section: Introductionmentioning

confidence: 99%

“…Numerical simulation has been used more to study green roofs to reduce heat islands and overheating in summer [30][31][32][33][34][35] or to improve the energy efficiency of an entire building [36,37]. Experimental research done on radiative occultation by extensive green walls (ivy and Virginia creeper) has shown good conclusions [8]. Three boxes had been instrumented to collect all the information necessary for the creation of the numerical model.…”

Section: Introductionmentioning

confidence: 99%

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Impact of green walls occultation on energy balance: Development of a TRNSYS model on a brick masonry house

Kenai¹,

Libessart²,

Lassue³

et al. 2021

Journal of Building Engineering

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of green walls occultation on energy balance: Development of a TRNSYS model on a brick masonry house

Kenai¹,

Libessart²,

Lassue³

et al. 2021

Journal of Building Engineering

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“…The experiment have shown the effect of a masking made by an artificial material [27]. A simplified model was developed on the basis of this experiment, which allowed the theoretical evaluation of the thermal impact of an artificial masking according to its coverage rate.…”

Section: Introductionmentioning

confidence: 99%

“…The artificial masking device was replaced by real vegetation and the theoretical study was supplemented by a model, which is more adapted to the case of masking by vegetation. The natural growth of the plants was evaluated by an image processing method, which made it possible to determine the coefficient of the coverage rate [27]. The differences between artificial masking and another with plants are discussed and interpreted as new parameters in the different equations.…”

Section: Introductionmentioning

confidence: 99%

Impact of plants obscuration on energy balance: Theoretical and numerical study

Kenai

Libessart

Lassue

et al. 2020

Journal of Building Engineering

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“…The common ways are solar radiation and indirect solar gains that warm up exterior building surfaces [7].…”

Section: Introductionmentioning

confidence: 99%

Improvement of winter heat balance of workshops

Cao

Kic

2018

Engineering for Rural Development

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Abstract. The aim of this paper is to describe the principles and methods of heat balance calculation in winter, which can be useful for assessment and improvement of heat transmission in the building. There are set up formulas and calculated the required heating capacity in two workshops to keep the standard internal temperature (from 16 °C to 20 °C) for students' practice during a winter day with external temperature about -12 °C. In the frame of this research, the structure of two workshops was directly measured and surveyed, and along with it, there were also the construction documents consulted. The formulas for heat balance calculation were set up from theories of energy balance and real construction of the building. The reduction of roof windows' area or improvement of the shape of the windows would influence the heat losses of the building. There can be also the heat exchange and efficiency of the heating equipment improved. The obtained results are the basis for proposal of a suitable building design, choosing and using of heating systems to achieve reasonable and economical conditions. The difference between workshops shows the influence of the structure of the workshop on the heat balance. As a general conclusion, it must be said that the roof windows' areas have a big influence on the heat transmission and they are the main factor responsible for heat losses and heat gains in the buildings. The formula could be useful for the designer of the building, which saves time, cost, energy and resources to keep indoor thermal comfort for the workers' performance.Keywords: calculation, heat transfer, temperature, workshop. IntroductionBy understanding the building's thermal loads and its intended using, we can more effectively use energy from the sun to save energy from the passive heat system [1]. We can even generate energy onsite using resources that would otherwise be thermal loads that would demand energy. High performance buildings seek to reduce these loads as much as possible [2; 3].The thermal load includes external thermal loads and internal thermal loads. External thermal loads come from heat transfer through the building envelope from the sun, weather, and the outside environment [4; 5]. The building envelope includes roofs, floors, walls, windows, and any other surfaces that separate the inside and outside of the building. The building envelopes interact with external thermal load to product external gains or losses for the building.The internal thermal loads come from heat generated by people, lighting, and equipment. In winter, the internal gains by people and lighting are not enough to keep warm inside the building [6]. Therefore, designers have to calculate, how much heat energy to use for warming up and then they will choose suitable heat equipment to achieve reasonable and economical conditions.In summer, the external heat that enters through the building is very high. The common ways are solar radiation and indirect solar gains that warm up exterior building surfaces [7].In winter, mainly ...

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Impact of plants occultation on energy balance: Experimental study

Cited by 17 publications

References 37 publications

Impact of green walls occultation on energy balance: Development of a TRNSYS model on a brick masonry house

Impact of green walls occultation on energy balance: Development of a TRNSYS model on a brick masonry house

Impact of plants obscuration on energy balance: Theoretical and numerical study

Improvement of winter heat balance of workshops

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