Best arrangement of BIPV surfaces for future NZEB districts while considering urban heat island effects and the reduction of reflected radiation from solar façades

Boccalatte, Antonio; Fossa, Marco; Ménézo, Christophe

doi:10.1016/j.renene.2020.07.057

Cited by 45 publications

(30 citation statements)

References 32 publications

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“…The most known phenomenon contributing to the urban local climate distortion is the Urban Heat Island (UHI), whose main effect is the increase in air temperatures with respect to the surrounding non-urbanized areas. This phenomenon negatively influences the thermal comfort at the street level and the energy demand of buildings, increasing their cooling load (Boccalatte et al, 2020;Lima et al, 2019;Morganti et al, 2017;Palme et al, 2017). This, in turn, affects the urban environment with an augmentation of the heat rejected outside from the building HVAC system, resulting in an undesirable feedback loop.…”

Section: Microclimatementioning

confidence: 99%

Identification of existing tools and workflows for solar neighborhood planning

Baker¹,

Monteiro²,

Boccalatte³

et al. 2022

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Planning for sustainable neighborhoods is a high priority for many cities. It is therefore important to take the right decisions during the planning phase to ensure that important aspects are considered. One of these important aspects is to consider the harvesting of solar energy in the best possible way. It is however difficult to define the best ways to exploit the incoming solar energy. Solar energy can be used by means of active solar energy production, passively by means of daylighting buildings or outside buildings on the ground for direct solar access or thermal comfort. This different usage can sometimes be conflicting (for example at a building level, in order to maximize the photovoltaic production, it may be necessary to use all the surfaces, therefore preventing the access to daylight). The access to daylight in the street is appreciated during cold days, but shading is preferred during the hotter days.

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Section: Microclimatementioning

confidence: 99%

Identification of existing tools and workflows for solar neighborhood planning

Baker¹,

Monteiro²,

Boccalatte³

et al. 2022

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“…Several studies have focused on the implementation of RES-based integrated systems for energy production and storage technologies [35,36], describing technologies and the optimal energy management of greenhouses [37]. According to the above-cited literature, the current trend to realize smart greenhouses at zero-net energy is becoming one of a viable technological solution to support sustainable food production and an alternative strategy to fossil fuel energy production.…”

Section: Smart Greenhouses Applicationsmentioning

confidence: 99%

Model Predictive Control versus Traditional Relay Control in a High Energy Efficiency Greenhouse

et al. 2021

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The sustainable agriculture cultivation in greenhouses is constantly evolving thanks to new technologies and methodologies able to improve the crop yield and to solve the common concerns which occur in protected environments. In this paper, an MPC-based control system has been realized in order to control the indoor air temperature in a high efficiency greenhouse. The main objective is to determine the optimal control signals related to the water mass flow rate supplied by a heat pump. The MPC model allows a predefined temperature profile to be tracked with an energy saving approach. The MPC has been implemented as a multiobjective optimization model that takes into account the dynamic behavior of the greenhouse in terms of energy and mass balances. The energy supply is provided by a ground coupled heat pump (GCHP) and by the solar radiation while the energy losses related to heat transfers across the glazed envelope. The proposed MPC method was applied in a smart innovative greenhouse located in Italy, and its performances were compared with a traditional reactive control method in terms of deviation of the indoor temperature in respect to the desired one and in terms of electric power consumption. The results demonstrated that, for a time horizon of 20 h, in a greenhouse with dimensions 15.3 and 9.9 m and an average height of 4.5 m, the proposed MPC approach saved about 30% in electric power compared with a relay control, guaranteeing a consistent and reliable temperature profile in respect to the predefined tracked one.

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“…However, the shading effect between buildings and mismatch between the solar power generation and building energy consumption often limit the application of the distributed photovoltaic system. Urban form has been proved to be a crucial aspect to modifying the solar availability and power generation stability of the photovoltaics in the densely covered city environment [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…The solar radiation on the city's building surface can be accurately simulated, which makes it possible to accurately explore and define the relationship between urban form and solar energy availability. In the previous research, the solar photovoltaic installation potentials of many cities have been investigated on both the individual building and building blocks [10,[12][13][14][15][16]. Several key parameters were identified to study the correlation between urban form and solar energy potential.…”

Section: Introductionmentioning

confidence: 99%

A Quantitative Study of the Influence of Urban Form on Large-Scale Application of Rooftop Photovoltaics Using Simplified Method

Li¹,

Jing²,

Liu³

et al. 2021

IJSGE

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The large-scale application of distributed photovoltaic system is often impeded by the shading effect between buildings and mismatch between the solar power generation and building energy consumption. This paper explores the relationship between urban form and rooftop photovoltaic installation and utilization potential with implications for low-carbon city planning. This study first investigated the influence of the urban form on the installation potential of the solar rooftop photovoltaics for 12 cities across China which covering different solar climate zones. The significant impact of the urban density on the photovoltaic installation potential is only observed in the cities in high latitude areas with medium solar radiation, and the negative impact can be mitigated by reducing the building height differences, which up to 25% improvement can be expected. Then, taking Shenzhen as an example, the influence of the urban form on the photovoltaic power generation utilization was further investigated for residential, commercial and office type of district building energy consumption profiles. It is found that the densely developed urban built-up environment has positive effect on the solar power utilization in which high percentage of the self-consumption ratio is observed. The self-consumption ratio of the residential district which is the lowest can be effectively improved by mixing with office and business buildings. For typical urban form in Shenzhen which the BCR and FAR are 0.35 and 2.5 respectively, if carefully planned, the rooftop photovoltaics can provide 12.6~18.5% of the building energy consumption and 69.8~75% of the solar power can be directly used by the building, which make the rooftop photovoltaics an important clean and economical energy resource for low-carbon city development.

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Best arrangement of BIPV surfaces for future NZEB districts while considering urban heat island effects and the reduction of reflected radiation from solar façades

Cited by 45 publications

References 32 publications

Identification of existing tools and workflows for solar neighborhood planning

Identification of existing tools and workflows for solar neighborhood planning

Model Predictive Control versus Traditional Relay Control in a High Energy Efficiency Greenhouse

A Quantitative Study of the Influence of Urban Form on Large-Scale Application of Rooftop Photovoltaics Using Simplified Method

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