Performance assessment and optimization of a solar cooling system to satisfy renewable energy ratio (RER) requirements in multi-family buildings

Bilardo, Matteo; Ferrara, Maria; Fabrizio, Enrico

doi:10.1016/j.renene.2020.03.044

Cited by 45 publications

(14 citation statements)

References 26 publications

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“…The results in terms of self-sufficiency and selfconsumption are shown in Table 9, where the BESS capacity per unit is the energy capacity of each battery system-i.e., the total storage capacity installed in the facility is three times this value. The SS and SC are annual values, obtained by calculating the total E PV , E load and E lgc of the facility and using Equations (5) and 6, respectively.…”

Section: First Scenariomentioning

confidence: 99%

“…On the contrary, a high-performance building that undergoes a major mismatch between generation and use of energy often results in a worse operational performance. The nZEB problem certainly calls into question an integration between different systems, including the envelope, Heating Ventilation and Air Conditioning (HVAC) equipment, occupant behavior, etc., which can hardly be foreseen and controlled through a traditional design [5]. In this context, studying in some detail the interactions between the building envelope and the HVAC system is essential to achieve the nZEB target.…”

Section: Introductionmentioning

confidence: 99%

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Energy Evaluation of a PV-Based Test Facility for Assessing Future Self-Sufficient Buildings

et al. 2021

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In recent years, investigations on advanced technological solutions aiming to achieve high-energy performance in buildings have been carried out by research centers and universities, in accordance with the reduction in buildings’ energy consumption required by European Union. However, even if the research and design of new technological solutions makes it possible to achieve the regulatory objectives, a building’s performance during operation deviates from simulations. To deepen this topic, interesting studies have focused on testing these solutions on full-scale facilities used for real-life activities. In this context, a test facility will be built in the university campus of Politecnico di Torino (Italy). The facility has been designed to be an all-electric nearly Zero Energy Building (nZEB), where heating and cooling demand will be fulfilled by an air-source heat pump and photovoltaic generators will meet the energy demand. In this paper, the facility energy performance is evaluated through a dynamic simulation model. To improve energy self-sufficiency, the integration of lithium-ion batteries in a HVAC system is investigated and their storage size is optimized. Moreover, the facility has been divided into three units equipped with independent electric systems with the aim of estimating the benefits of local energy sharing. The simulation results clarify that the facility meets the expected energy performance, and that it is consistent with a typical European nZEB. The results also demonstrate that the local use of photovoltaic energy can be enhanced thanks to batteries and local energy sharing, achieving a greater independence from the external electrical grid. Furthermore, the analysis of the impact of the local energy sharing makes the case study of particular interest, as it represents a simplified approach to the energy community concept. Thus, the results clarify the academic potential for this facility, in terms of both research and didactic purposes.

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Section: First Scenariomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy Evaluation of a PV-Based Test Facility for Assessing Future Self-Sufficient Buildings

et al. 2021

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“…Solar thermal heaters convert solar radiation into heat via the thermo-fluid dynamic properties of solar collectors. On the other hand, solar thermal coolers rely on thermally-activated sorption processes [2]. Various solar thermal collectors are in use: flat plate, evacuated tube, and parabolic collectors.…”

Section: Renewable and Alternative Energy Systems For Buildingsmentioning

confidence: 99%

“…Among many, standard building energy modeling software include the Transient System (TRNSYS) simulation tool (http://www.trnsys.com/ (accessed 17 May 2021)), EnergyPlus (https://energyplus.net/ (accessed 17 May 2021)), and Integrated Environmental Solutions Virtual Environment (IESVE) (https://www.iesve.com/ (accessed 19 May 2021)) [1,2,26,28], which mainly focus on the integration of system-components with limited feedback interaction to outdoor conditions. Accounting for renewable and alternative energy options in standard building simulation tools poses limitations due to non-uniqueness and various objectives of system integration.…”

Section: Building Performance Modeling By Feedback Interaction With Urban Climate-weather Variablesmentioning

confidence: 99%

“…To reduce environmental impact, renewable and alternative energy sources are widely considered for buildings to supplement the use of fossil fuels, such as natural gas, or electricity consumption that may ultimately be associated with GHG emissions. A key challenge is the determination of the Renewable Energy Ratio (RER) for a particular region, which is often driven by the availability of technology, background climate, and system economics [2]. In Europe, for example, different legislative bodies have mandated the use of different ratios and mixtures of renewable energy sources for various building sectors.…”

Section: Introductionmentioning

confidence: 99%

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How Much Building Renewable Energy Is Enough? The Vertical City Weather Generator (VCWG v1.4.4)

et al. 2021

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A challenge in the integration of renewable and alternative energy systems for buildings is the determination of the renewable energy ratio, which involves the selection and sizing of appropriate building systems. To address this need, a micro climate-weather software titled the Vertical City Weather Generator (VCWG) is further developed to include renewable and alternative energy systems and account for full two-way interaction between the building system and outdoor environment. VCWG is forced to simulate performance of a residential building in Guelph, Canada, for an entire year in 2015. Various energy options are considered and further optimized for the building to reduce natural gas consumption, electricity consumption, and cost. On an annual basis using the global cost method, and compared to a building with no such renewable or alternative energy systems, the optimized system resulted in 80.3% savings in natural gas consumption, 73.4% savings in electricity consumption, and 3% savings is annualized cost. According to this analysis, some technologies, such as photovoltaics are more favorable in the Canadian climate than other technologies. It is suggested that the building optimization process is not unique, and it depends on background climate, optimization weighing factors, and assumptions used in the economic analysis, which require further research.

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Green building practices to integrate renewable energy in the construction sector: a review

Chen,

Hu,

Wang

et al. 2023

Environ Chem Lett

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The building sector is significantly contributing to climate change, pollution, and energy crises, thus requiring a rapid shift to more sustainable construction practices. Here, we review the emerging practices of integrating renewable energies in the construction sector, with a focus on energy types, policies, innovations, and perspectives. The energy sources include solar, wind, geothermal, and biomass fuels. Case studies in Seattle, USA, and Manama, Bahrain, are presented. Perspectives comprise self-sufficiency, microgrids, carbon neutrality, intelligent buildings, cost reduction, energy storage, policy support, and market recognition. Incorporating wind energy into buildings can fulfill about 15% of a building's energy requirements, while solar energy integration can elevate the renewable contribution to 83%. Financial incentives, such as a 30% subsidy for the adoption of renewable technologies, augment the appeal of these innovations.

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Performance assessment and optimization of a solar cooling system to satisfy renewable energy ratio (RER) requirements in multi-family buildings

Cited by 45 publications

References 26 publications

Energy Evaluation of a PV-Based Test Facility for Assessing Future Self-Sufficient Buildings

Energy Evaluation of a PV-Based Test Facility for Assessing Future Self-Sufficient Buildings

How Much Building Renewable Energy Is Enough? The Vertical City Weather Generator (VCWG v1.4.4)

Green building practices to integrate renewable energy in the construction sector: a review

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