A dynamic analysis of a SAGSHP system coupled to solar thermal collectors and photovoltaic-thermal panels under different climate conditions

Emmi, Giuseppe; Bordignon, Sara; Zarrella, Angelo; Carli, Michele De

doi:10.1016/j.enconman.2020.112851

Cited by 32 publications

(6 citation statements)

References 34 publications

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“…It was observed that the poly-Si PVT collector operating temperature was higher than the a-Si-PVT, and correspondingly, the electrical efficiency of poly-Si-PVT was lower than the a-Si-PVT. In another study [96], the authors compared a ground source heat pump driven by PVT and conventional solar thermal collectors for energy performance to supply the cooling, heating and hot water demands of a two-storey building. The energy system was coupled to a low-temperature terminal unit, like radiant systems, leading to the improved energy performance of heat pumps.…”

Section: Water-based Pvt Systemsmentioning

confidence: 99%

A Review of Photovoltaic Thermal (PVT) Technology for Residential Applications: Performance Indicators, Progress, and Opportunities

et al. 2021

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Solar energy has been one of the accessible and affordable renewable energy technologies for the last few decades. Photovoltaics and solar thermal collectors are mature technologies to harness solar energy. However, the efficiency of photovoltaics decays at increased operating temperatures, and solar thermal collectors suffer from low exergy. Furthermore, along with several financial, structural, technical and socio-cultural barriers, the limited shadow-free space on building rooftops has significantly affected the adoption of solar energy. Thus, Photovoltaic Thermal (PVT) collectors that combine the advantages of photovoltaic cells and solar thermal collector into a single system have been developed. This study gives an extensive review of different PVT systems for residential applications, their performance indicators, progress, limitations and research opportunities. The literature review indicated that PVT systems used air, water, bi-fluids, nanofluids, refrigerants and phase-change material as the cooling medium and are sometimes integrated with heat pumps and seasonal energy storage. The overall efficiency of a PVT system reached up to 81% depending upon the system design and environmental conditions, and there is generally a trade-off between thermal and electrical efficiency. The review also highlights future research prospects in areas such as materials for PVT collector design, long-term reliability experiments, multi-objective design optimisation, techno-exergo-economics and photovoltaic recycling.

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Section: Water-based Pvt Systemsmentioning

confidence: 99%

A Review of Photovoltaic Thermal (PVT) Technology for Residential Applications: Performance Indicators, Progress, and Opportunities

et al. 2021

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“…Weeratunge et al carried out simulation of HGSHP systems with solar collectors using a mathematical model and compared HGSHP systems with ASHP systems and cooling only ASHP systems with a gas furnace in 14 cities 22 . Additionally, a solar‐assisted GSHP system coupled to solar thermal collectors and photovoltaic‐thermal panels was analyzed using a simulation model 23 . Recently, Lee et al experimentally evaluated HGSHPs using serial and parallel configurations with the application of GHE and demonstrated that the parallel configuration provides superior heating performance in conditions where outdoor air temperature is higher than ground temperature 24 .…”

Section: Introductionmentioning

confidence: 99%

“…22 Additionally, a solar-assisted GSHP system coupled to solar thermal collectors and photovoltaic-thermal panels was analyzed using a simulation model. 23 Recently, Lee et al experimentally evaluated HGSHPs using serial and parallel configurations with the application of GHE and demonstrated that the parallel configuration provides superior heating performance in conditions where outdoor air temperature is higher than ground temperature. 24 Bina et al modeled HGSHP systems with a supplemental heating and cooling source devices and revealed that HGSHP systems improved long-term performance in the both of heating dominant region and cooling dominant region.…”

Section: Introductionmentioning

confidence: 99%

Hybrid ground source heat pump system capable of year‐round heating and its application in liquid natural gas vaporization

Katsura

Shoji

Yang

et al. 2022

Intl J of Energy Research

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Summary One of the challenges in using a ground source heat pump (GSHP) system is the long‐term increase or decrease in underground temperature due to an imbalance between heat extraction and injection. To eliminate this imbalance, we proposed a hybrid GSHP (HGSHP) system combined with air–water heat exchangers (AWHEs) capable of year‐round heating and applied it to the hot water supply for liquid natural gas (LNG) vaporization in a satellite station. In this paper, the authors demonstrate the year‐round heating capability of the HGSHP system and the energy conservation benefits of installing the HGSHP system for LNG vaporization. First, a field experimental apparatus was constructed for a gas vaporization system with the HGSHP; thereafter, an experimental proof of gas vaporization was obtained. The experimental results showed that it was possible to stably vaporize liquid nitrogen that was used instead of LNG by supplying hot water at 25°C. Additionally, in the gas vaporization experiment with the HGSHP system in the summer season, the SCOP measured was over ten. A calculation model for the AWHE was then established using the field test data; thereafter, a simulation tool for the HGSHP system was developed by combining it with one for the GSHP system. The simulation results indicated that the average surface temperature of all GHEs in the HGSHP system decreases from first year to second year. However, the average surface temperature of all GHEs stabilizes at a reduced level after the third year. These results indicate that the HGSHP system can operate long‐term for year‐round heating because the average surface temperature stabilize in the long‐term.

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“…After modeling the systems in TRNSYS and conducting simulations, the SPF of the system was estimated to be 6.0. A simulation-based evaluation of a SAGSHP system was conducted by C. Emmi et al [29], with the aim to find out the energetical optimal solution for three European cities. The SAGSHP systems was evaluated with flat plate and with PVT collectors, where the use of PVTs seems to benefit the most the performance of the system, by providing both heat and electricity at the same time.…”

Section: Introductionmentioning

confidence: 99%

Energy and economic evaluation of a solar assisted ground source heat pump system for a north Mediterranean city

Sakellariou

Axaopoulos

Wright

2021

Energy and Buildings

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A dynamic analysis of a SAGSHP system coupled to solar thermal collectors and photovoltaic-thermal panels under different climate conditions

Cited by 32 publications

References 34 publications

A Review of Photovoltaic Thermal (PVT) Technology for Residential Applications: Performance Indicators, Progress, and Opportunities

A Review of Photovoltaic Thermal (PVT) Technology for Residential Applications: Performance Indicators, Progress, and Opportunities

Hybrid ground source heat pump system capable of year‐round heating and its application in liquid natural gas vaporization

Energy and economic evaluation of a solar assisted ground source heat pump system for a north Mediterranean city

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