The impact of key parameters on the energy requirements for artificial lighting in Italian buildings based on standard EN 15193-1:2017

Pompei, Laura; Blaso, Laura; Fumagalli, Simonetta; Bisegna, Fabio

doi:10.1016/j.enbuild.2022.112025

Cited by 17 publications

(4 citation statements)

References 15 publications

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“…The characteristics and dimensions of the presented shopping mall were in line with medium-sized Italian commercial buildings, since the process of defining this case study was to represent a typical shopping center in Italy [25]. Therefore, the presented shopping mall was not a real case study, but a representative type (archetype) of an Italian mediumsized shopping center.…”

Section: Case Study: a Shopping Mallmentioning

confidence: 99%

Towards the Renovation of Energy-Intensive Building: The Impact of Lighting and Free-Cooling Retrofitting Strategies in a Shopping Mall

Pompei,

Nardecchia,

Viglianese

et al. 2023

Buildings

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One of the most energy-intensive types of buildings is commercial. Several works investigated the optimizations of Heating, Ventilation and Air Conditioning (HVAC) systems for achieving thermal comfort and indoor air quality. On the other hand, lighting systems play also a crucial role in minimizing energy consumption rates in a shopping mall and increasing its sustainability. Despite the relevant scientific research in the literature, to the best of our knowledge, there is no study that analyzes the impact of HVAC systems with and without the free-cooling option applied to a commercial building combined with lighting solutions. The combination of HVAC systems with free cooling and lighting retrofit strategies defines four energy scenarios, where the most efficient one is detected. The results show that the use of advanced technologies in lighting control systems has a double benefit: direct savings due to the better performance of the lighting fixtures and indirect savings due to the reduction in the thermal load with a consequent reduction in consumption levels for air conditioning. Additionally, a reduction of 51.7% in lighting consumption levels generated a 17.4% reduction in air conditioning levels. A total reduction in energy consumption rate of 33% was achieved. Since the lighting strategy demonstrates a relevant impact on reducing the global energy consumption of the shopping mall, a feasibility analysis is also presented.

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Section: Case Study: a Shopping Mallmentioning

confidence: 99%

Towards the Renovation of Energy-Intensive Building: The Impact of Lighting and Free-Cooling Retrofitting Strategies in a Shopping Mall

Pompei,

Nardecchia,

Viglianese

et al. 2023

Buildings

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“…The building sector significantly contributes to primary energy demand and accounts globally for 39% of energy-related carbon dioxide (CO2) emissions [1], issues that European Commission is trying to stem by the agreement of a series of targets to be achieved before 2030: 40% reduction of GHG emissions with respect to 1990 levels; at least 32% share of renewable energy sources and at least 32.5% energy efficiency increase with respect to the initial scenario [2]. In general existing buildings are significantly responsible for the production of greenhouse gases and for energy consumption [3][4][5][6], and due to their widespread on the Italian soil with respect to new constructions, whose annual rate is within 0.1-0.2% of the actual building stock [7], they need to be studied in depth, in order to achieve the Community objectives. Comparative analysis conducted on a historical building by ARCHISM and TRNSYS software, pointed out that only some of the nZEBs requirements are met before retrofit interventions, while the rest of the objectives exceed the minimum requirement, due to low envelope performance and low energy system efficiencies [8].…”

Section: Introductionmentioning

confidence: 99%

Comparison of different heating generator systems to reduce energy consumption in social housing in a Mediterranean climate.

Vallati

Fiorini

Ocłoń

et al. 2022

J. Phys.: Conf. Ser.

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This study analyses the energy consumption of a social housing built in the 80’s. This building typology is deteriorating over time with increased energy consumption for air conditioning and indoor comfort that is well below the standard. This typology is also widely diffused in the city’s building stock, especially in its suburbs. Thus, the energy efficiency of public social housing represents a major concern for the Italian national scene, and its improvement represents an effort of critical importance. However, public funding is significantly reduced compared to the past and. In addition, it is often difficult to act on passive systems, such as installing thermal insulation, or replacing terminal units inside apartments. In these cases, as an energy retrofit, it may be appropriate to evaluate the possibility of preserving as much of the existing distribution and supply system as possible, while modifying the thermal energy generation system. In general, where the boiler is not obsolescent, the idea is to propose a hybrid generation system with the inclusion of a heat pump (HHP), which could be implemented with renewable energy equipment, properly installed in the building. The main goal of the present work was to evaluate through dynamic analysis different HVAC scenarios, to assess the optimal configuration of the system for residential use. The results show that a hybrid system can lower the primary energy consumption up to 28%, thus allowing the employment of renewable energies within the social housing building stock.

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“…Local energy planning has therefore gained popularity in recent years, as geographic information system (GIS) applications spread and computing power has increased [4,5]. Recently, there have been numerous strategies proposed for conserving energy in the building sector, including thermal insulation, double and triple glazing, solar shadings [6,7], the efficient usage of HVAC equipment [8], hybrid energy system [9] and using renewable energy sources [10,11]. As well as these technologies, district heating systems are another viable solution for improving energy efficiency [12] and sustainable assessment [13] in buildings.…”

Section: Introductionmentioning

confidence: 99%

A Different Approach to Develop a District Heating Grid Based on the Optimization of Building Clusters

et al. 2022

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Currently, reducing energy consumption and fossil fuel emissions are key factors placed in the first position on the European agenda. District heating technology is an attractive solution, able to satisfy the energy and environmental goals of policymakers and designers. In line with this, a different approach to planning a district heating grid based on the optimization of building clusters is presented. The case study is Wilhelmsburg, a district of Hamburg city. This approach also investigates the usage of industrial waste heat as the grid’s heat source, which is CO2-neutral. First, the data acquisition regarding the buildings’ location and heat demand are described in detail. Based on the derived data and the source of the industrial waste heat, the district heating grid is created by clustering the buildings and connecting the obtained nodes. Furthermore, the grid’s efficiency is improved by eliminating nodes, which are too distant from the heat source, or have lower heat demand. Finally, a single building is simulated in Matlab/Simulink, showing the energy-savings and ecological results. The usage of the district heating grid saves 97.32 GWh annually, which results in financial savings of €5.83 million, and avoided CO2 emissions of 19,585 tCO2.

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The impact of key parameters on the energy requirements for artificial lighting in Italian buildings based on standard EN 15193-1:2017

Cited by 17 publications

References 15 publications

Towards the Renovation of Energy-Intensive Building: The Impact of Lighting and Free-Cooling Retrofitting Strategies in a Shopping Mall

Towards the Renovation of Energy-Intensive Building: The Impact of Lighting and Free-Cooling Retrofitting Strategies in a Shopping Mall

Comparison of different heating generator systems to reduce energy consumption in social housing in a Mediterranean climate.

A Different Approach to Develop a District Heating Grid Based on the Optimization of Building Clusters

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