Dynamic Modelling of a Hybrid Solar Thermal/Electric Storage System for Application in Residential Buildings

Frazzica, Andrea; Palomba, Valeria; Sergi, Francesco; Ferraro, Marco; Cabeza, Luisa F.; Zsembinszki, Gabriel; Oró, Eduard; Karellas, Sotiriοs; Varvagiannis, Efstratios; Emhofer, Johann; Barz, Tilman

doi:10.18086/eurosun2018.11.03

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…The latent heat TES investigated in this study is part of an innovative concept of two hybrid electrical and thermal energy storage systems developed and tested in the framework of HYBUILD, a research project funded by the H2020 program [17]. The main aim of the systems is to provide heating or cooling to stand-alone and district connected residential buildings by using a considerable contribution from solar energy to reduce the energy consumption of the buildings [18]. One of the concepts is mainly intended to cover the cooling demand in buildings located in Mediterranean climate regions, while the other concept is mainly designed to provide heating and DHW for buildings located in Continental climate regions.…”

Section: Description Of the Applicationmentioning

confidence: 99%

Selection of the Appropriate Phase Change Material for Two Innovative Compact Energy Storage Systems in Residential Buildings

2020

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The implementation of thermal energy storage systems using phase change materials to support the integration of renewable energies is a key element that allows reducing the energy consumption in buildings by increasing self-consumption and system efficiency. The selection of the most suitable phase change material is an important part of the successful implementation of the thermal energy storage system. The aim of this paper is to present the methodology used to assess the suitability of potential phase change materials to be used in two innovative energy storage systems, one of them being mainly intended to provide cooling, while the other provides heating and domestic hot water to residential buildings. The selection methodology relies on a qualitative decision matrix, which uses some common features of phase change materials to assign an overall score to each material that should allow comparing the different options. Experimental characterization of the best candidates was also performed to help in making a final decision. The results indicate some of the most suitable candidates for both systems, with RT4 being the most promising commercial phase change material for the system designed to provide cooling, while for the system designed to provide heating and domestic hot water, the most promising candidate is RT64HC, another commercial product.

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Section: Description Of the Applicationmentioning

confidence: 99%

Selection of the Appropriate Phase Change Material for Two Innovative Compact Energy Storage Systems in Residential Buildings

2020

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“…The simulations were carried out in the Dymola/Modelica modelling environment using ThermoCycle library components [21]. Additionally, models for the RPW-HEX, the outdoor unit and the four-way valve were developed in-house [22,23]. Thermodynamic properties were taken from the CoolProp library [24].…”

Section: Simulation Modelsmentioning

confidence: 99%

Techno-Economic Analysis of a Heat Pump Cycle Including a Three-Media Refrigerant/Phase Change Material/Water Heat Exchanger in the Hot Superheated Section for Efficient Domestic Hot Water Generation

et al. 2020

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Integration of a three-media refrigerant/phase change material (PCM)/water heat exchanger (RPW-HEX) in the hot superheated section of a heat pump (HP) system is a promising approach to save energy for domestic hot water (DHW) generation in multi-family houses. The RPW-HEX works as a desuperheater and as a latent thermal energy storage in the system. The latent thermal energy storage is charged during heating and cooling operation and discharged for DHW production. For this purpose, the water side of the RPW-HEX is connected to decentralized DHW storage devices. DHW consumption, building standards and climate, energy prices, material costs, and production costs are the constraints for the selection of the optimal storage size and RPW-HEX design. This contribution presents the techno-economic analysis of the RPW-HEX integrated into an R32 air source HP. With the aid of experimentally validated dynamic computer models, the optimal sizing of the RPW-HEX storage is discussed to maximize energy savings and to minimize the investment costs. The results are discussed in the context of a return of investment analysis, practical implementation aspects and energetic potential of the novel technology.

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Dynamic Modelling of a Hybrid Solar Thermal/Electric Storage System for Application in Residential Buildings

Cited by 2 publications

References 23 publications

Selection of the Appropriate Phase Change Material for Two Innovative Compact Energy Storage Systems in Residential Buildings

Selection of the Appropriate Phase Change Material for Two Innovative Compact Energy Storage Systems in Residential Buildings

Techno-Economic Analysis of a Heat Pump Cycle Including a Three-Media Refrigerant/Phase Change Material/Water Heat Exchanger in the Hot Superheated Section for Efficient Domestic Hot Water Generation

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