Rooftop extension as a solution to reach nZEB in building renovation. Application through typology classification at a neighborhood level

Aparicio-Gonzalez, Elena; Domingo-Irigoyen, Silvia; Gutiérrez, Ana Sánchez-Ostiz

doi:10.1016/j.scs.2020.102109

Cited by 20 publications

(6 citation statements)

References 15 publications

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“…Nearly Zero Energy Buildings (NZEBs) are based on a group of regulations, energy polices, standards, and codes, which aim to ensure a higher improvement on building energy performance and also the implementation of on-site (or near-site) energy generation from renewable sources [37]. The objectives of the NZEBs are not only limited to new buildings [38], because existing buildings can be retrofitted considering energy saving measures and renewable generation.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Each energy saving strategy must be planned, designed and modelled to estimate its impact on the building performance. Many authors have used the EnergyPlus software, initially to know if the strategies could achieve NZEB objectives or in the ideal scenario, if the modelling of strategies will achieve the expected zero balance [13,31,37]. Regarding onsite electricity generation, Homer PRO software is widely used by researchers to estimate the sizing, operation, economic costs, and other parameters, of power generation systems from renewable sources [42,43].…”

Section: Literature Reviewmentioning

confidence: 99%

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Energy Saving Strategies and On-Site Power Generation in a University Building from a Tropical Climate

Litardo¹,

Palme²,

Hidalgo-León³

et al. 2021

Applied Sciences

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This paper compares the potential for building energy saving of various passive and active strategies and on-site power generation through a grid-connected solar photovoltaic system (SPVS). The case study is a student welfare unit from a university campus located in the tropical climate (Aw) of Guayaquil, Ecuador. The proposed approach aims to identify the most effective energy saving strategy for building retrofit in this climate. For this purpose, we modeled the base line of the building and proposed energy saving scenarios that were evaluated independently. All building simulations were done in OpenStudio-EnergyPlus, while the on-site power generation was carried out using the Homer PRO software. Results indicated that the incorporation of daylighting controls accounted for the highest energy savings of around 20% and 14% in total building energy consumption, and cooling loads, respectively. Also, this strategy provided a reduction of about 35% and 43% in total building energy consumption, and cooling loads, respectively, when combined with triple low-e coating glazing and active measures. On the other hand, the total annual electric energy delivered by the SPVS (output power converter) was 66,590 kWh, from where 48,497 kWh was supplied to the building while the remaining electricity was injected into the grid.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Energy Saving Strategies and On-Site Power Generation in a University Building from a Tropical Climate

Litardo¹,

Palme²,

Hidalgo-León³

et al. 2021

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…The classification of residential typologies is based on the results of the PrestaRener project [39] and analysis carried out in previous projects by the research group SAVIArquitectura [40,41]. Eleven residential typologies were detected in both neighbourhoods.…”

Section: Residential Typologies and Building Parameters Definitionmentioning

confidence: 99%

From Urban Microclimate to Indoor Overheating: Analysis of Residential Typologies During Typical Climate Series and Extreme Warm Summer

Arriazu-Ramos

Ruiz

Izquierdo

et al. 2023

Preprint

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“…Moreover, the use of electricity for heating and cooling can be profitably combined with installation of rooftop PV panels. Several studies focus on energy efficient buildings with rooftop PV in mild climates [19][20][21][22][23]. The progress towards zero energy buildings is equally significant in US and Canada [24,25].…”

Section: Introductionmentioning

confidence: 99%

Energy Performance Optimization of a House with Grid-Connected Rooftop PV Installation and Air Source Heat Pump

2021

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The use of air source heat pump systems for space heating and cooling is a convenient retrofitting strategy for reducing building energy costs. This can be combined with the rooftop installation of photovoltaic panels, which can cover, to a significant degree—or even significantly exceed the building’s electricity needs, moving towards the zero energy building concept. Alternatively, increased capacity for rooftop photovoltaic (PV) installation may support the ongoing process of transforming the Greek power system away from the reliance on fossil fuels to potentially become one of the leaders of the energy transition in Europe by 2030. Standard building energy simulation tools allow good assessment of the Heating, Ventilation and Air Conditioning (HVAC) and PV systems’ interactions in transient operation. Further, their use enables the rational sizing and selection of the type of panels type for the rooftop PV installation to maximize the return on investment. The annual performance of a three-zone residential building in Volos, Greece, with an air-to-water heat pump HVAC system and a rooftop PV installation, are simulated in a TRNSYS environment. The simulation results are employed to assess the expected building energy performance with a high performance, inverter driven heat pump with scroll compressor and high efficiency rooftop PV panels. Further, the objective functions are developed for the optimization of the installed PV panels’ area and tilt angle, based on alternative electricity pricing and subsidies. The methodology presented can be adapted to optimize system design parameters for variable electricity tariffs and improve net metering policies.

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Rooftop extension as a solution to reach nZEB in building renovation. Application through typology classification at a neighborhood level

Cited by 20 publications

References 15 publications

Energy Saving Strategies and On-Site Power Generation in a University Building from a Tropical Climate

Energy Saving Strategies and On-Site Power Generation in a University Building from a Tropical Climate

From Urban Microclimate to Indoor Overheating: Analysis of Residential Typologies During Typical Climate Series and Extreme Warm Summer

Energy Performance Optimization of a House with Grid-Connected Rooftop PV Installation and Air Source Heat Pump

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