Energy retrofit optimization for social building in temperate climate zone

Vallati, Andrea; Fiorini, Costanza Vittoria; Grignaffini, Stefano; Ocłoń, Paweł; Matteo, Miriam Di; Kobylarczyk, Justyna

doi:10.1016/j.enbuild.2023.112771

Cited by 10 publications

(1 citation statement)

References 33 publications

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“…As stated in the literature [6][7][8], there are some critical challenges associated with renewable energy because of fluctuating power production and the mismatched supply/demand for electricity. Based on these tasks, the key role of an energy storage system is essentially to meet the energy demand of the building and make the building more energy-independent [9][10][11][12]. Renewable energy can be stored in several ways, including internally, mechanically, or via potential energy [13].…”

Section: Introductionmentioning

confidence: 99%

Mitigation of Renewable Energy Source Production Variability in Residential Stock through Small-Scale Gas–Liquid Energy Storage Technology Application

Vallati,

Di Matteo,

Pompei

et al. 2024

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Despite renewable energy source integration being a well-established requirement in international policies, energy systems still face some unresolved issues, including the intermittence of production. To tackle this problem, a viable solution could comprise the off-peak storage of electricity production excess, to be consumed later during peak-load hours. The transition from the diffuse pattern of centralized generation to the distributed model, involving energy communities, suggests an additional aspect to manage: the spatial constraints of systems for domestic applications. Compressed-air energy storage represents a promising Power-to-Power technology for small-scale energy integration. This study proposes the application of a gas–liquid energy storage system (GLES) in a residential building, using renewable energy excess from a photovoltaic (PV) array. The performance of the proposed system, whose operation involves the compression of the gaseous mass through a piston operated by mineral oil, was evaluated through energy analysis performed simulating the devices and their coupling with the load profiles of the building. The thermodynamic model of storage was validated using data from an experimental campaign on a prototype. A sensitivity study, acting on the features of the system, such as the compression rate and vessel size, allowed us to compare the absorbed PV energy excess, the coverage of the building energy demand during the expansion phase, and the electrical efficiency of a daily cycle. The results obtained, together with the related economic analysis, were used to quantify the market potential of the proposed solution, to be exploited as a mechanical alternative to conventional electric batteries in dwellings.

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