Hybrid Energy Systems for Power of Sustainable Buildings. Case Study: A Renewable Energy Based on-Site Green Electricity Production

Felseghi, Raluca‐Andreea; Bolboaca, Andrei; Răboaca, Maria-Simona; Așchilean, Ioan

doi:10.1016/b978-0-12-819727-1.00037-6

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…Hybrid energy systems can be used to reduce the dependency on conventional fuel-based heating and cooling systems. Here, on-site renewable energy utilization is critical in providing clean and green energy for buildings [3].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Fresnel Lens Focal Point Location on Heat Transfer in Phase Change Material (PCM) Enhanced Dynamic Solar Facade

Narbuts

Blumberga

Zundāns

et al. 2022

Environmental and Climate Technologies

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In recent years, the demand for energy-efficient technological solutions in the building sector has risen significantly worldwide. The exploitation of phase change material as a medium for thermal energy storage in building envelopes has increased due to its superior properties. There is still a knowledge gap to cover in the way to the effective solar thermal energy storage in the building envelope – to enhance the heat transfer, to reduce the heat loss, etc. This paper deals with the optimisation of heat transfer using a solar concentrator (Fresnel lens). This study examines the effect of Fresnel lens focal point location on heat transfer in a dynamic solar facade prototype that stores thermal energy in phase change material. Nine different setups (solar façade compositions) were tested in the laboratory – two parameters with three alternatives each. Testing conditions simulate the relevant Northern Europe climate. By changing the air gap configuration and location of the Fresnel lens focal point, the heat transfer to phase change material was observed by measuring temperatures in the phase change material container using five thermocouples. The results show the improved thermal performance in test modules with larger cone diameter by 7.2 % and Fresnel lens focal point positioning closer to the back of the phase change material container by 5.4 %.

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Section: Introductionmentioning

confidence: 99%

The Effect of Fresnel Lens Focal Point Location on Heat Transfer in Phase Change Material (PCM) Enhanced Dynamic Solar Facade

Narbuts

Blumberga

Zundāns

et al. 2022

Environmental and Climate Technologies

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“…The implementation of this vision can be achieved by improved solutions at the level of the building envelope, building services, technologies used for the exploitation of energy sources, 10 automation and control systems, 11 but mainly by using renewable energy sources (RES) at accessible prices.…”

Section: Introductionmentioning

confidence: 99%

Pairing solar power to sustainable energy storage solutions within a residential building: A case study

Așchilean

Cobîrzan

Bolboaca

et al. 2021

Intl J of Energy Research

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This research paper presents the case study results on generating electricity based on solar resources for an existing residential building with conventional electric energy demand located in Cluj-Napoca, Romania. The solar energy system proposed for analysis has provided the back-up energy through two types of state-of-the-art energy storage technologies: (a) Tesla batteries and (b) hydrogen vector energy, obtained electrolytically on-site. Starting from the main imposed condition that all the building's electric energy demand be provided by the solar resource, sustainable technical solutions for renewable energy storage are of crucial importance for the successful implementation of power systems based on clean solar energy. New solar energy storage technologies are imperative for the superior harnessing of solar resources at the production site, whether it is short-term energy storage such as Tesla batteries or long-term energy storage such as hydrogen energy vector. The main objective of this work is to assess the feasibility of the proposed grid-independent energy system, which is pairing solar power to sustainable energy storage technologies within an existing residential building with conventional electric energy demand. This study aims to evaluate the optimal sizing of the solar units implemented in the design along with the optimal back-up energy storage capacities to fulfil the building's daily electricity demand in an uninterrupted mode. This article investigates the possibility of supplying 100% solar power to the existing residential building with conventional electric energy demand under constraints and limitations conditions due to the stochastic nature of building electricity consumption, volatile and intermittent nature of solar resources, local meteorological conditions specific to the building's placement and space limitations for the positioning of the photovoltaic panels. The average daily load that has been calculated for the building has a value of 6.50 kWh. To reach the proposed target of integral solar power supply, photovoltaic panels with an installed power of 7.84 kWp paired with a Tesla batteries bank with a storage capacity of 7.4 kWh are needed, and in the case of storing solar energy in the form of electrolytic hydrogen it is necessary to pair the photovoltaic panels with an installed power of 15.12 kWp, 3 kW electrolyser, 2 kW fuel cell and H 2 tank of 7 kg. The annual energy demand of 2369 kWh is achieved

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Energy simulation scenario to social housing building: combining heat pump and renewable energy system

Vallati,

Fiorini,

Muzi

et al. 2023

2023 8th International Conference on Smart and Sustainable Technologies (SpliTech)

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Hybrid Energy Systems for Power of Sustainable Buildings. Case Study: A Renewable Energy Based on-Site Green Electricity Production

Cited by 3 publications

References 20 publications

The Effect of Fresnel Lens Focal Point Location on Heat Transfer in Phase Change Material (PCM) Enhanced Dynamic Solar Facade

The Effect of Fresnel Lens Focal Point Location on Heat Transfer in Phase Change Material (PCM) Enhanced Dynamic Solar Facade

Pairing solar power to sustainable energy storage solutions within a residential building: A case study

Energy simulation scenario to social housing building: combining heat pump and renewable energy system

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