Energy analysis of a green façade in summer: an experimental test in Mediterranean climate conditions

Blanco, Ileana; Convertino, Fabiana; Schettini, Evelia; Vox, Giuliano

doi:10.1016/j.enbuild.2021.111076

Cited by 42 publications

(12 citation statements)

References 46 publications

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“…Starting from simulations and on-site measurements, this approach allows reductions to be achieved in terms of difference between the measured and the theoretical U-values. As already mentioned, temperature stability along time and high temperature gradients are difficult to obtain, especially for the Mediterranean climatic conditions [59]. For this reason, a specific data selection method based on detailed criteria was proposed by Evangelisti et al [60] for measurements carried out under various weather conditions and wall orientations, on walls distinguished by low thermal inertia.…”

Section: Hfm Methodsmentioning

confidence: 99%

Comparison between Heat Flow Meter (HFM) and Thermometric (THM) Method for Building Wall Thermal Characterization: Latest Advances and Critical Review

et al. 2022

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It is well-known that on-site measurements are suitable for verifying the actual thermal performance of buildings. Performance assessed in situ, under actual thermal conditions, can substantially vary from the theoretical values. Therefore, experimental measurements are essential for better comprehending the thermal behavior of building components, by applying measurement systems and methods suitable to acquire data related to temperatures, heat flows and air speeds both related to the internal and external environments. These data can then be processed to compute performance indicators, such as the well-known thermal transmittance (U-value). This review aims at focusing on two experimental techniques: the widely used and standardized heat flow meter (HFM) method and the quite new thermometric (THM) method. Several scientific papers were analyzed to provide an overview on the latest advances related to these techniques, thus providing a focused critical review. This paper aims to be a valuable resource for academics and practitioners as it covers basic theory, in situ measurement equipment and criteria for sensor installation, errors, and new data post-processing methods.

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Section: Hfm Methodsmentioning

confidence: 99%

Comparison between Heat Flow Meter (HFM) and Thermometric (THM) Method for Building Wall Thermal Characterization: Latest Advances and Critical Review

et al. 2022

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“…Weather scenarios will affect the cooling energy savings of the GF and GR. This paper refers to the weather scenarios classification by Blanco et al (2021), dividing weather scenarios into six types: hot sunny and cloudy days, warm sunny and cloudy days, cool sunny, and cloudy days from June 1 to September 30, shown in Table 5. Hot and cool days are identified as days with the mean daily outdoor air temperature above 27.3°C and below 22.4°C, respectively.…”

Section: Resultsmentioning

confidence: 99%

Impact of green roof and green facade on building thermal performance and carbon sequestration in subtropical climate of China

Jiang

Zhou

et al. 2023

Journal of Building Physics

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This paper investigates the case building’s cooling effect, energy saving, and carbon sequestration with green facade and green roof. The west and east GF is covered with wisteria, and the GR is planted with different kinds of vegetables. The cooling effect of the GF and GR is analyzed by field test. The cooling energy saving of the GF and GR is deeply discussed with EnergyPlus software simulation. Carbon sequestrations of the GF and GR are calculated considering both plant photosynthetic and energy saving with the field test and simulation. The results show that the average external surface temperature reduction of the west GF, east GF, and GR is 4.5°C, 4.2°C, and 9.7°C on sunny days, 1.3°C, 1.3°C, and 1.4°C respectively on cloudy days. The total cooling energy saving of the GF and GR is 4.75 kWh/m2. The cooling energy saving of the GR with seven kinds of vegetables varies from 529.6 to 2936.3 kWh, which is related to the LAI and height of vegetables. The daily cooling energy saving in hot sunny weather scenario is almost three times that in cool sunny. The carbon sequestration ability per planted GF area is 1.4 kg C/m2, and per planted GR area with seven different vegetables varies from 0.88 to 2.21 kg C/m2, in which the strongest is peanut, and the weakest is lettuce. At last, the cooling energy savings of GF in different orientations on hot, warm, and cool sunny days are discussed, which is shown that the cooling energy saving effect of the different oriented GF mainly depends on the received solar radiation amount in this orientation. The results of this research can provide some assistance in improving the design of the building GR and GF.

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“…The aim of this research was to determine the temperature heat flux 28,29 observed on a living vertical wall and the cooling or isolating effect inside the building. This was achieved by connecting various thermocouples to the outside surface of the wall where the tiles containing the plants were situated.…”

Section: Methodsmentioning

confidence: 99%

Thermally regulated green living wall

Gouws

2022

S.Afr.j.chem.

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Green living walls can improve the aesthetic quality of a building and moderate the temperature within it. The purpose of this paper is to examine whether the green wall has any effect on the interior temperature of the building in the hot and cold months of the year. Temperatures on an outside wall as well as on research and control areas were monitored to capture temperature data for a one-year period that encompassed all seasons: sunny, cold and wet. The findings of this research contribute to the knowledge of the effects provided by green living walls in terms of cooling and heating, the influence on the proximity microclimatic conditions, and overall energy transfer. Heat flux of 20-100 W/m2 was found indicating an insulating effect that brings about cooling in the interior of the building. During summer months a cooling effect of 2-4 °C was observed, while the opposite effect was observed during winter in that the temperatures did not drop by much but provide a insulating effect of 2-3 °C higher than it was for the control area. Altogether, green living walls could be implemented to reduce and insulating interior living conditions and therefore reduce building energy demands.

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Energy analysis of a green façade in summer: an experimental test in Mediterranean climate conditions

Cited by 42 publications

References 46 publications

Comparison between Heat Flow Meter (HFM) and Thermometric (THM) Method for Building Wall Thermal Characterization: Latest Advances and Critical Review

Comparison between Heat Flow Meter (HFM) and Thermometric (THM) Method for Building Wall Thermal Characterization: Latest Advances and Critical Review

Impact of green roof and green facade on building thermal performance and carbon sequestration in subtropical climate of China

Thermally regulated green living wall

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