Large scale energy analysis and renovation strategies for social housing in the historic city of Venice

Teso, Lorenzo; Carnieletto, Laura; Sun, Kaiyu; Zhang, Wanni; Gasparella, Andrea; Romagnoni, Piercarlo; Zarrella, Angelo; Hong, Tianzhen

doi:10.1016/j.seta.2022.102041

Cited by 16 publications

(10 citation statements)

References 40 publications

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“…This targeted approach optimizes energy efficiency and facilitates greener, more cost-effective energy management. Whether shading is considered makes a difference of 3-15% in baseline energy consumption depending on the building orientation and the direction of the main shading [24]. The results show that adding PV is better for high-rise than mid-rise residential buildings.…”

Section: Discussionmentioning

confidence: 94%

“…Many studies have analyzed the effects of energy-saving measures through UBEM. Teso et al [24] used the CityBES tool based on GIS data to generate models and analyses of energy-saving performances of four retrofit measures, including the building envelope and heat generation boilers. Borràs et al [25] analyzed the building rooftops' potential for solar generation, considering different building types based on UBEM.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Peak Demand Reduction and Energy Saving in a Mixed-Use Community through Urban Building Energy Modeling

Zhao,

Deng,

et al. 2024

Energies

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Energy saving in buildings is essential as buildings’ operational energy use constitutes 30% of global energy consumption. Urban building energy modeling (UBEM) effectively understands urban energy consumption. This paper applied UBEM to assess the potential of peak demand reduction and energy saving in a mixed-use community, using 955 residential buildings, 35 office buildings and 7 hotels in Shenzhen, China, as a case study. The building type and period were collected based on the GIS dataset. Then, the baseline models were generated by the UBEM tool—AutoBPS. Five scenarios were analyzed: retrofit-window, retrofit-air conditioner (AC), retrofit-lighting, rooftop photovoltaic (PV), and demand response. The five scenarios replaced the windows, enhanced the AC, upgraded the lighting, covered 60% of the roof area with PV, and had a temperature reset from 17:00 to 23:00, respectively. The results show that using retrofit-windows is the most effective scenario for reducing peak demand at 19.09%, and PV reduces energy use intensity (EUI) best at 29.96%. Demand response is recommended when further investment is not desired. Retrofit-lighting is suggested for its low-cost, low-risk investment, with the payback period (PBP) not exceeding 4.54 years. When the investment is abundant, retrofit-windows are recommended for public buildings, while PV is recommended for residential buildings. The research might provide practical insights into energy policy formulation.

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Analysis of Peak Demand Reduction and Energy Saving in a Mixed-Use Community through Urban Building Energy Modeling

Zhao,

Deng,

et al. 2024

Energies

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“…Another problem with this tool is that Energy Plus can't consider the inter-building effects, such as radiant heat exchange between building exterior surfaces, and the microclimate effect. Teso et al [73] developed a study in Venice, where CityBES was used to do an energy analysis of four common conservation retrofit measures. They were the replacement of the existing windows for more efficient ones, applying insulation in the interior of the roof and the exterior of the external wall, and, finally, the upgrade of the heating system through a replacement of the boilers for more recent and advanced ones.…”

Section: Envimetmentioning

confidence: 99%

Integration of PV Systems in the Urban Environment—A Review

Rodrigues,

Palmero-Marrero,

Oliveira

2024

Preprint

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Building integrated photovoltaics (BIPV) consists of PV panels that are integrated into the building as part of the construction. This technology has advantages such as the production of electricity without necessary additional land area. This paper provides a literature review about the recent developments in urban building energy modelling, including tools and methods, and the effect of PV systems on building outdoor and indoor environments. It is also intended to provide a critical analysis on how PV systems affect the urban environment, both from an energy and a comfort point of view. The urban heat island development is introduced and related with the existence of PV systems. It is concluded that data acquisition is still a weakness in urban building energy modelling, especially in what concerns non-geometric data, which leads to a major source of errors. The availability of data is a challenge because frequently they are not accessible, due to privacy, high-cost or other reasons. Also, methodologies to develop precise archetypes for creating urban building energy models are lacking.

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“…In [16], a review of the combination of different renewable energy systems was presented to improve energy efficiency in building stock based on energy generation, payback durations and reduction of CO 2 emissions. At the district level, Teso et al [17] proposed a methodology to renovate a low-income district in the city of Venice using CityBES to model and evaluate four common energy conservation measures covering both the building envelope and the heat-generation boilers. They showed that the four measures together achieved 67% energy savings.…”

Section: Background Scope and Novelty Of The Studymentioning

confidence: 99%

Energy Saving, Energy Efficiency or Renewable Energy: Which Is Better for the Decarbonization of the Residential Sector in Italy?

Noro

Busato

2023

Energies

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The residential sector is currently responsible for approximately 30% of the final energy consumption and 12% of direct CO2 emissions in Italy, mainly due to the heating and cooling of buildings and the use of domestic hot water. Such figures show a significant potential for reducing non-renewable primary energy utilization to comply with the decarbonization constraints of the European Union. In this context, the purpose of this work is to provide a quantitative assessment of the effect of a different number of actions (eight for energy savings, four for energy efficiency and two for the installation of renewable energy plants) that could be implemented at the national level to reduce the consumption of natural gas in the residential sector. Two typical residential buildings are dynamically simulated using Trnsys®, and the savings from energy, economic and CO2 emissions points of view are evaluated in the different climatic zones of Italy. The most effective action foresees the replacement of natural gas boilers and old air conditioners with modern heat pumps and air/air chillers as well as the installation of a controlled mechanical ventilation system with heat recovery. This solution allows for non-renewable primary energy savings of 58% and an economic savings on annual energy costs of 72%.

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Large scale energy analysis and renovation strategies for social housing in the historic city of Venice

Cited by 16 publications

References 40 publications

Analysis of Peak Demand Reduction and Energy Saving in a Mixed-Use Community through Urban Building Energy Modeling

Analysis of Peak Demand Reduction and Energy Saving in a Mixed-Use Community through Urban Building Energy Modeling

Integration of PV Systems in the Urban Environment—A Review

Energy Saving, Energy Efficiency or Renewable Energy: Which Is Better for the Decarbonization of the Residential Sector in Italy?

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