Modular greening technologies for buildings

Korol, Elena; Shushunova, Natalia; Nikitina, Maria; Шушунова, Татьяна Николаевна

doi:10.1051/e3sconf/202126304031

Cited by 6 publications

(1 citation statement)

References 19 publications

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“…Indeed, edifices are responsible for 40% of the global energy consumption for final uses and 36% of the CO 2 emission, with the sole residential sector that contributes by 25.4% of the total demand [7]. Suitable legislative plans have been developed to improve energy efficiency politics, as well as energy savings interventions and integration of renewable sources in the building sector [8][9][10]. In light of this, the application of a passive system is attractive because these allow for attaining energy savings exploiting solar radiation as the primary energy source, without the use of mechanical devices to move a heat transfer fluid [11,12].…”

Section: Introductionmentioning

confidence: 99%

A Calibration of the Solar Load Ratio Method to Determine the Heat Gain in PV-Trombe Walls

et al. 2022

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The Trombe wall is a passive system used in buildings that indirectly transfers thermal energy to the adjacent environment by radiation and convection, and directly by the thermo-circulation that arises in the air cavity delimited between a transparent and an absorbing surface. Nevertheless, the latter is painted black to increase the energy gains, but this produces a negative visual impact and promotes the overheating risk in summer. To mitigate these aspects, a hybrid Trombe wall equipped with PV panels can be employed. The PV installation results in a more pleasing wall appearance and the overheating risk reduces because part of the absorbed solar radiation is transformed into electricity. To determine the actual performance of a such system, transient simulation tools are required to consider properly the wall thermal storage features, variation of the optical properties, air thermo-circulation, and PV power production. Alternatively, regarding the traditional Trombe wall, the literature provides a simplified empirical method based on the dimensionless parameter solar load ratio (SLR) that allows for preliminary evaluations and design. In this paper, the SLR method was calibrated to determine the monthly auxiliary energy to be supplied in buildings equipped with PV-Trombe walls in heating applications. The SLR method was tuned by a multiple linear regression by data provided by TRNSYS simulation that allowed to obtain the energy performances in actual conditions of PV-Trombe walls installed on the same building but located in different localities. The comparison between the TRNSYS results and the calibrated SLR method determined average errors ranging between 0.7% and 1.4%, demonstrating the validity of the proposed methodology.

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