Retrofit strategies to obtain a NZEB using low enthalpy geothermal energy systems

D’Agostino, Diana; Minichiello, Francesco; Petito, Fabio; Renno, Carlo; Valentino, A.

doi:10.1016/j.energy.2021.122307

Cited by 9 publications

(4 citation statements)

References 32 publications

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“…A large basement pit needs to be excavated first, and the buried pipe inside the pit is almost in a horizontal position. However, the minimum slope of buried pipe should not be less than 2.5% to eliminate the condensation that may form on the pipe wall during system's summer operation [11]. Vertical buried-pipe EAHE system is a newly proposed SG ventilation system, and its buried pipe generally adopts U-shape form [29].…”

Section: Common Utilization Forms Of Sg Technologiesmentioning

confidence: 99%

“…Also, the permitting process and criteria for sustainable SG systems should be developed based on scientific results to accommodate differences due to local geographical and environmental conditions. About the practical application of different geothermal system for the energy efficiency of existing buildings, D'Agostino et al [11] compared and analyzed different retrofit strategies using two different geothermal systems (i.e., GSHP and EAHE systems) and common heating and cooling systems (e.g., air source heat pump systems). A comprehensive comparison was also carried out from the energy, environmental and economic perspectives.…”

Section: Research and Application Status Of Sg Technologiesmentioning

confidence: 99%

“…Shallow geothermal (SG), as one of the most common renewable energy technologies, has been widely used and explored for building heating/cooling and carbon-neutrality transitions in the practical application [8,9]. SG refers to underground heat resources that are generally less than 200 m depth, and is also defined as near-surface geothermal energy [10,11]. SG is not geographically restricted, and it can continuously and reliably supply energy anywhere in the world [12,13].…”

Section: Introductionmentioning

confidence: 99%

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Review on shallow geothermal promoting energy efficiency of existing buildings in Europe

Liu

K.Qian

Visscher

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The energy-saving renovation of existing buildings has been attracted sufficient attention to reduce fossil fuels and mitigate global warming in Europe. The shallow geothermal for building cooling and heating, as an environmentally-friendly and cost-effective alternative, has been widely explored to promote energy efficiency of existing buildings. However, few studies conduct the comprehensive overview on the applications, developments, and existing issues of shallow geothermal promoting energy efficiency of existing buildings (SGPEEEB) in Europe. The objective of this paper is to review the current application status and future trends of SGPEEEB in Europe. First, the common utilization forms and classifications of used shallow geothermal technologies are introduced to further clarify the investigated subject. Then, the research and application status of SGPEEEB has also analyzed and discussed. At last, this study proposes the future trends and comments of SGPEEEB in Europe.

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Section: Common Utilization Forms Of Sg Technologiesmentioning

confidence: 99%

Section: Research and Application Status Of Sg Technologiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Review on shallow geothermal promoting energy efficiency of existing buildings in Europe

Liu

K.Qian

Visscher

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…), 6,7 and interventions throughout the life cycle of the building. 8,9 D’Agostino et al 10 analysed the energy retrofit strategies of an existing building, considering two low-enthalpy geothermal systems in heating, ventilation and air conditioning (HVAC) plants from an energy, environmental and economic standpoint. The results showed a significant reduction of 71% in energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Feasibility and performance analysis of a net-zero energy residential building in tropical climates: A case of Congo-Brazzaville

Elenga,

Zhu,

Tongora

et al. 2024

Indoor and Built Environment

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Current building techniques in developing countries have become extremely critical. The net-zero energy concept has emerged as an essential strategy for minimising energy consumption and greenhouse gas emissions. However, its implementation, particularly in developing countries, remains a critical challenge. The purpose of this work is to assess the feasibility of achieving a net-zero energy building by combining energy-efficient design practices and renewable energy systems under the climatic conditions of the Republic of Congo. To achieve the stipulated objectives, DesignBuilder software was utilised for building modelling, energy load assessment and multiobjective optimisation of building energy efficiency measures, and the multicriteria energy optimisation was carried out using the HOMER tool. The optimisation results showed that the implementation of energy efficiency measures resulted in 39.15% energy savings, 43.45% thermal load savings and 55.68% discomfort hours reduction. Furthermore, the renewable energy system can provide 100% of the building’s energy load and a total savings of 3341.84 kgCO2eq/year. The system’s levelised cost of energy was estimated at 0.256 $/kWh, with a net present cost of $20,231, while the overall life cycle cost was calculated at 188.91 $/m2.

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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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Retrofit strategies to obtain a NZEB using low enthalpy geothermal energy systems

Cited by 9 publications

References 32 publications

Review on shallow geothermal promoting energy efficiency of existing buildings in Europe

Review on shallow geothermal promoting energy efficiency of existing buildings in Europe

Feasibility and performance analysis of a net-zero energy residential building in tropical climates: A case of Congo-Brazzaville

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

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