Numerical and Experimental Analysis of a Low-GWP Heat Pump Coupled to Electrical and Thermal Energy Storage to Increase the Share of Renewables across Europe

Rehman, Omais Abdur; Palomba, Valeria; Frazzica, Andrea; Charalampidis, Antonios; Karellas, Sotiriοs; Cabeza, Luisa F.

doi:10.3390/su15064973

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…Fig. 2 Control strategy for simulated system (SoC-State of charge) [9] The electricity profile of building was obtained from an integrated domestic electricity demand model developed by Centre for Renewable Energy Systems Technology at Loughborough University [11]. The thermal loads of building were taken from a TRNSYS simulation of an existing class-A building that has been used for analysis of solar cooling systems [12].…”

Section: Fig 1 Schematic Diagram Of Simulated System [9]mentioning

confidence: 99%

“…Fig. 5 Average values for SC (%) vs SSI(%) for three cities [9] Table 1 reports the details for energy produced by PV and energy exchange with grid. It can be seen that increasing PV size results in selling more energy to grid.…”

Section: 𝑆𝑆𝐼 = 𝐸 𝑃𝑉 − 𝐸 𝑡𝑜 𝑔𝑟𝑖𝑑 𝐸 𝐻𝑃 + 𝐸 𝐵𝑢𝑖𝑙𝑑𝑖𝑛𝑔_𝑎𝑝𝑝𝑙𝑖𝑎𝑛𝑐𝑒𝑠 + 𝐸 𝐻𝑒𝑎𝑡𝑒𝑟mentioning

confidence: 99%

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Analysis of a heat pump-based energy system exploiting a low GWP refrigerant in different European climates

Abdur Rehman,

Palomba,

Frazzica

et al. 2023

E3S Web Conf.

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The objective of this research is to assess the operation of a heat pump (HP) under varying climatic conditions in Europe. To achieve this, a Dymola model is developed for a solar-assisted reversible water-to-water HP that utilizes a low global warming potential (GWP) refrigerant, R1234ze(E), and includes thermal and electrical energy storage systems. Experimental data is used to validate the primary components of the model. Simulations are conducted for both summer and winter seasons to determine the system’s overall annual performance. The analysis covers energy exchange between the system and the grid and utilizes key performance indicators such as self-sufficiency and self-consumption index. Furthermore, a techno-economic analysis is conducted to determine the payback period of the heating and cooling energy system based on the components’ capital expenditure and available incentives.

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Section: Fig 1 Schematic Diagram Of Simulated System [9]mentioning

confidence: 99%

Analysis of a heat pump-based energy system exploiting a low GWP refrigerant in different European climates

Abdur Rehman,

Palomba,

Frazzica

et al. 2023

E3S Web Conf.

Self Cite

View full text Add to dashboard Cite

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“…Hybrid systems are the usual choice to reduce emissions and improve overall system energy efficiency [23]. Mancò et al examined the use of traditional and green technologies in the renovation of an old building.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Electrical and Thermal Storage in a High School Building in Central Greece

Roumpakias,

Zogou,

Stamatellou

2024

Energies

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Nearly zero-emission buildings (nZEBs) are increasingly being constructed in Europe. There are also incentives to refurbish older buildings and transform them into nZEBs. However, permission is not always granted for their connection to the grid to infuse surplus photovoltaic electricity due to the grid being overloaded with a large number of renewables. In this study, the case of a refurbished school building in Central Greece is examined. After refurbishing it, a significant amount of photovoltaic electricity surplus is observed during the summer and neutral months, which cannot be exported to the grid. The absence of an adequate battery storage capacity resulted in the rejection of an application for exporting the school’s surplus to the network and the photovoltaic installation staying idle. An alternative approach is proposed in this work, involving a shift in the export of the photovoltaic electricity surplus to the evening hours, in order for the school to be granted permission to export it to the network. To this end, an optimal battery storage size is sought by employing a building energy system simulation. The mode of operation of the battery designed for this application is set to discharge daily, in order to export the electricity surplus in the afternoon hours to the evening hours, when it is favorable for the network. Additionally, the optimal size of the thermal energy storage of the heating system is studied to further improve its energy efficiency. Our battery and storage tank size optimization study shows that a significant battery capacity is required, with 12 kWh/kWp photovoltaic panels being recommended for installation. The ever-decreasing cost of battery installations results in the net present value (NPV) of the additional investment for the battery installation becoming positive. The solution proposed forms an alternative path to further increase the penetration of renewables in saturated networks in Greece by optimizing battery storage capacity.

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Experimental evaluation of different macro-encapsulation designs for PCM storages for cooling applications

Rehman,

Palomba,

Verez

et al. 2023

Journal of Energy Storage

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Numerical and Experimental Analysis of a Low-GWP Heat Pump Coupled to Electrical and Thermal Energy Storage to Increase the Share of Renewables across Europe

Cited by 4 publications

References 29 publications

Analysis of a heat pump-based energy system exploiting a low GWP refrigerant in different European climates

Analysis of a heat pump-based energy system exploiting a low GWP refrigerant in different European climates

Optimization of Electrical and Thermal Storage in a High School Building in Central Greece

Experimental evaluation of different macro-encapsulation designs for PCM storages for cooling applications

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