Contribution of energy storage to the transition from net zero to zero energy buildings

Medved, Sašo; Domjan, Suzana; Arkar, Ciril

doi:10.1016/j.enbuild.2021.110751

Cited by 20 publications

(4 citation statements)

References 29 publications

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“…They concluded that the ventilation system with an energy recovery function has great potential. Medved et al [12] assessed the contribution of energy storage to an NZEB, including heat and cold storage and batteries, which are significant in the transition of NZEBs towards ZEB. Guarda et al [13] reported the influence of climate change on renewable energy systems designed for NZEBs with a case study in the Brazilian savannah.…”

Section: Literature Reviewmentioning

confidence: 99%

Strategies of Design Concepts and Energy Systems for Nearly Zero-Energy Container Buildings (NZECBs) in Different Climates

Koke¹,

Schippmann²,

Shen

et al. 2021

Buildings

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Container-based lightweight buildings offer a high ecologic and economic potential when they are designed as nearly zero-energy container buildings (NZECBs). Thus, they are relevant to energy transition in achieving an almost climate-neutral building stock. This paper describes and applies design strategies for suitable building concepts and energy systems to be used in NZECBs for different climates. Therefore, different applications in representative climatic zones were selected. Initially, the global climate zones were characterized and analyzed with regard to their potential for self-sufficiency and renewable energies in buildings. The design strategies were further developed and demonstrated for three cases: a single-family house in Sweden, a multi-family house in Germany, and a small school building in rural Ethiopia. For each case, design guidelines were derived and building concepts were developed. On the basis of these input data, various energy concepts were developed in which solar and wind energy, as well as biomass, were integrated as renewable energy sources. All the concepts were simulated and analyzed with the Polysun® software. The various approaches were compared and evaluated, particularly with regard to energy self-sufficiency. Self-sufficiency rates up to 80% were achieved. Finally, the influence of different climate zones on the energy efficiency of the single-family house was studied as well as the influence of the size of battery storage and insulation.

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Section: Literature Reviewmentioning

confidence: 99%

Strategies of Design Concepts and Energy Systems for Nearly Zero-Energy Container Buildings (NZECBs) in Different Climates

Koke¹,

Schippmann²,

Shen

et al. 2021

Buildings

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“…TES using PCM possesses higher energy density, and is the potential part of the zero-energy building. 6,7 To study the problem of unsteady, laminar doubled-diffusive convective flow of the binary gas mixture, serious investigations were conducted in the enclosure filled with a uniform porous medium. 8–11 Ghalambaz et.al 12,13 studied the effects of hybrid nanoparticles on the melting process of a nano-enhanced phase-change material inside different shaped enclosure.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer investigation on the thermal energy storage using phase change material in low-carbon building

Xia,

Li,

XiangLi

et al. 2024

Building Services Engineering Research and Technology

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The use of high-conductivity porous medium is an effective method to enhance the heat transfer rate of phase change material (PCM) in thermal energy storage (TES), reducing the energy consumption of low-carbon buildings. This paper establishes a solid-liquid phase change lattice Boltzmann model of a TES unit and investigates the effects of Rayleigh number, inclination angle, porous array, and porosity. The findings indicate that inserting the porous medium enhances conductive heat transfer and weakens convective heat transfer. When the Rayleigh number is increased from 103 to 104, the liquid fraction increases by 3.0%, while an increase from 104 to 105 only results in a 1.6% increase, suggesting a diminishing effect of increasing the Rayleigh number. Results also show that the inclination angle can be disregarded in this study. Furthermore, increasing the specific surface area enhances conductive heat transfer. However, when the array n is changed to 7, the fastest variation of liquid fraction is obtained among the range from 5 to 9. Increasing the porosity will delay the moment that temperature standard deviation reaches to the maximum, getting the temperature distribution more nonuniform. The findings from this paper are valuable for the design of TES systems in low-carbon buildings. Practical application The porous medium can enhance heat transfer in the phase change process. In the field of low-carbon buildings, porous medium is applied to strengthen the energy storage rate. By investigating the parameters of the Rayleigh numbers, inclination angles, porosities and arrangement of porous medium arrays of the composed energy storage unit, the regularity of the effects on the energy characteristics are obtained, which would provide some valuable practice references for designing these parameters of the energy storage units in the future energy-efficient building sector.

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“…Thus, associated with the cost of installation, storage systems-whatever their nature-must be designed and operated to achieve maximum performance. Thus, the scientific literature abounds [5,[8][9][10][11][12][13] and much of it focuses on the expected behavior and performance of a storage system. When focusing on systems adapted to the residential sector, one must consider small capacity and diffuse systems.…”

Section: Introduction 1contextmentioning

confidence: 99%

Relevance of Optimized Low-Scale Green H2 Systems in a French Context: Two Case Studies

Gronier

Maréchal²,

Gibout

et al. 2022

Energies

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Hydrogen has been identified as a very promising vector for energy storage, especially for heavy mobility applications. For this reason, France is making significant investments in this field, and use cases need to be evaluated as they are sprouting. In this paper, the relevance of H2 in two storage applications is studied: a domestic renewable electricity production system connected to the grid and a collective hydrogen production for the daily bus refill. The investigation consists of the sizing of the system and then the evaluation of its performance according to several criteria depending on case. Optimizations are made using Bayesian and gradient-based methods. Several variations around a central case are explored for both cases to give insights on the impact of the different parameters (location, pricing, objective, etc.) on the performance of the system.Our results show that domestic power-to-power applications (case 1) do not seem to be competitive with electrochemical storage. Meanwhile, without any subsidies or incentives, such configuration does not allow prosumers to save money (+16% spendings compared to non-equipped dwelling). It remains interesting when self-sufficiency is the main objective (up to 68% of energy is not exchanged). The power-to-gas application (case 2, central case), with a direct use of hydrogen for mobility, seems to be more relevant according to our case study, we could reach a production cost of green H2 around 5 €/kg, similar to the 3–10 $/kg found in literature, for 182 houses involved. In both cases, H2 follows a yearly cycle, charging in summer and discharging in winter (long term storage) due to low conversion efficiency.

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Contribution of energy storage to the transition from net zero to zero energy buildings

Cited by 20 publications

References 29 publications

Strategies of Design Concepts and Energy Systems for Nearly Zero-Energy Container Buildings (NZECBs) in Different Climates

Strategies of Design Concepts and Energy Systems for Nearly Zero-Energy Container Buildings (NZECBs) in Different Climates

Heat transfer investigation on the thermal energy storage using phase change material in low-carbon building

Relevance of Optimized Low-Scale Green H2 Systems in a French Context: Two Case Studies

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