Effect of photovoltaic installation power and façade glazing ratio on the energy performance of a nursery building

Marchwiński, Janusz; Kurtz-Orecka, Karolina

doi:10.1108/ecam-08-2021-0735

Cited by 4 publications

(4 citation statements)

References 25 publications

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“…The temperatures (air-cooling and heating) and ventilation (air-exchange rate) were assumed in accordance with the standard [37]. The method has already been used in [23,24].…”

Section: Methodsmentioning

confidence: 99%

“…The same applies in the case of the Ep indicator when the RES share is considered. Based on previous studies with PV systems [22,23], it can be assumed that only a minimum 30-40 kWp PV system would allow overcoming the negative impact of the reduced g-factor.…”

Section: The Importance Of the G-factor And Pv Power-figure 10mentioning

confidence: 99%

“…However, whether this rule applies in the case of central atria (without a façade) is not recognised. At the same time, research indicates the great importance of climatic factors determined by the climatic zone and local climatic conditions [12,21], the share of glazing in the building envelope, GR (glazing ratio) [22,23], and the impact of the height of the atrium [7] on the energy behaviour of the building.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Atrium Glazing with and without BIPV on Energy Performance of the Low-Rise Building: A Central European Case Study

et al. 2023

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This article aims to investigate the impact exerted by different types of covering an atrium with glazing on the energy performance of a kindergarten building, provided by the authors as a conceptual design. The considered types of atria included an open atrium, a glazed atrium, and an atrium that operated as a hybrid system. Additionally, the following aspects were taken into consideration: the effect of a glazing-integrated PV system (BIPV); the variety of thermal features represented by the inner boundary between the conditioned and the unconditioned space (Uiu); and the atrium space air-exchange ratio (nue) on the energy balance of the building. Energy performance indicators, including energy demands for space heating and cooling (Eu), delivered energy (Ed), and primary energy (Ep) indicators for heating and cooling mode were estimated for the moderate climates and two locations of the building model, i.e., for Warsaw (Central Poland) and Ahlbeck (Northern Germany). The research results prove that the glazed atrium exerts the most beneficial impact on the energy performance of the building. Nevertheless, certain variables must be considered, especially the air-exchange ratio of the atrium space, as they significantly influence the total annual energy performance. The results obtained with regard to the effect exerted by the presence of BIPV systems differ from those usually expected. This is due to the effect of the total solar-energy-transmittance value (g) modulation caused by the system and, finally, by a significant reduction in passive solar-gain harvesting, which is important for heating-mode results in examined climate conditions. Taking the present analysis into account, it can be concluded that the energy and environmental effects of the glazed integrated PV systems in temperate climates are strongly influenced by the environmental conditions, and, in some cases, these solutions may prove to be not efficient enough in terms of the energy and costs.

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“…The temperatures (air-cooling and heating) and ventilation (air-exchange rate) were assumed in accordance with the standard [37]. The method has already been used in [23,24].…”

Section: Methodsmentioning

confidence: 99%

Section: The Importance Of the G-factor And Pv Power-figure 10mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of Atrium Glazing with and without BIPV on Energy Performance of the Low-Rise Building: A Central European Case Study

et al. 2023

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“…Vukadinović et al [13] discussed the influence of glazing types and window-to-wall ratios (WWRs) on the energy performance of a detached residential building, Benefits of 41.59%, 61.04% and 47.70% were found from triple-glazing systems in terms of total energy consumption for WWR = 20%, WWR = 40% and WWR = 60%, respectively. Marchwi ński et al [14] examined the influence of photovoltaic (PV) installations and the share of facade glazing on the energy profile of nursery buildings in the Baltic Sea region and defined the most favorable configuration in terms of energy efficiency. A systematic investigation was conducted by Vaca [15] to study the effects of five building forms and different orientations using BEopt software (version 2.4.0.1).…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Tilted Building Envelope Considering Air Conditioning Energy Demand, Daylight Utilization and Glare Protection—Case Study

Fang,

Yang,

Dong

2024

Buildings

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An important energy-saving method to optimize building envelope design is the integration of local climate characteristics. This study attempts to find sloped facade configurations to balance air conditioning energy demand and daylight utilization for four directions in an area with a hot climate. Tilt angle dependence of the air conditioning energy demand, useful daylight illuminance (UDI) and daylight glare index (DGI) are selected to investigate the acceptance thresholds of the tilt angle. The final facade’s configuration is achieved by employing the graphical optimization method. An acceptable solution that balances better daylight performance and less energy consumption by air conditioning is developed. Due to the considered city being located in a low-latitude area with great daylight availability as well as a fully dimmable light control strategy, unbearable glare reduction can be achieved by benefiting from the sloped facades, without necessarily sacrificing much usable daylight. Meanwhile, there is no obvious increase in the demand for lighting energy consumption, and a good outward view is preserved. The sloped rather than vertical facade provides natural solar shading to the east-, south- and west-oriented windows while allowing low-angle winter solar heat to warm the building space. Tilt angles between 35°and 40° are preferred for the east facade, and smaller tilt angles of between 30°and 35° are recommended for the south facade. Larger tilt angles of between 40°and 45° are preferred for the west facade. However, the north-facing facade’s outward tilt would cause an undesirable increase in air conditioning energy demand. The annual air conditioning energy demand of the east-, south- and west-facing space is found to separately decrease by 7.1%, 7.3% and 9.9%, respectively, benefiting from the sloped facades.

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Carbon emissions of power transmission and transformation projects in the whole life cycle for smart sustainable energy systems

Wang,

Hu,

Huang

et al. 2024

Sci Rep

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The study investigates the optimization of life cycle carbon emissions in smart sustainable energy systems through power transformation and transmission project power load predictions. Firstly, a multi-task learning-based short-term user load forecasting technique is developed, where the power load curves of multiple residential customers are grouped and classified using the K-means clustering method. Additionally, the Bidirectional Long Short-Term Memory (BiLSTM) technique is introduced to anticipate the power load intelligently. Secondly, a life cycle carbon emission assessment model for the power transmission and transformation project (PTTP) is constructed based on the life cycle assessment (LCA) method, which divides the project's life cycle into four stages: production, installation and construction, operation and maintenance, and demolition. Finally, an experimental evaluation of this model is conducted. The results demonstrate that compared with the baseline model Long Short-Term Memory (LSTM), this model achieves a significantly lower average Mean Absolute Error (MAE) at 3.62% while achieving significantly higher accuracy in power load forecasting at 94.34%. A comprehensive examination of carbon emissions across all four phases reveals that overall carbon emissions are highest during the operation and maintenance stage followed by the equipment production stage and installation/construction stage, with the lowest overall carbon emissions observed. Hence, this study endeavors to forecast power load demand with precision and identify the principal determinants of carbon emissions in power engineering. By discerning and managing these key factors, an optimal, energy-efficient intelligent power load scheme can be derived.

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Effect of photovoltaic installation power and façade glazing ratio on the energy performance of a nursery building

Cited by 4 publications

References 25 publications

Impact of Atrium Glazing with and without BIPV on Energy Performance of the Low-Rise Building: A Central European Case Study

Impact of Atrium Glazing with and without BIPV on Energy Performance of the Low-Rise Building: A Central European Case Study

Optimal Design of Tilted Building Envelope Considering Air Conditioning Energy Demand, Daylight Utilization and Glare Protection—Case Study

Carbon emissions of power transmission and transformation projects in the whole life cycle for smart sustainable energy systems

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