Thermal storage integrated into air-source heat pumps to leverage building electrification: A systematic literature review

Ermel, Conrado; Bianchi, Marcus; Cardoso, Ana Paula Mattoso Miskulin; Schneider, Paulo Smith

doi:10.1016/j.applthermaleng.2022.118975

Cited by 20 publications

(5 citation statements)

References 81 publications

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“…These results can also be used further to size the backup system for the model, for example, integration of a thermal storage system; i.e., developing an optimal thermal battery (TB) model that can store the excess energy from the solar PV during the generation in the off-peak time period and use it during the peak time period so the need for electricity from the grid can be minimized. Thermal batteries can allow the storing of this excess energy which can be used when necessary, thus minimizing the energy supply-demand mismatch occurring due to the integration of renewable resources [122]. Moreover, this thermal battery model should also be sized accordingly based on the economics and size of the whole system, which again raises the need for economic analysis of the PV+HP+TB system.…”

Section: Discussionmentioning

confidence: 99%

Residential Sizing of Solar Photovoltaic Systems and Heat Pumps for Net Zero Sustainable Thermal Building Energy

Rana,

Jamil,

Asgari

et al. 2024

Computation

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To enable net zero sustainable thermal building energy, this study develops an open-source thermal house model to couple solar photovoltaic (PV) and heat pumps (HPs) for grid-connected residential housing. The calculation of both space heating and cooling thermal loads and the selection of HP is accomplished with a validated Python model for air-source heat pumps. The capacity of PV required to supply the HPs is calculated using a System Advisor Model integrated Python model. Self-sufficiency and self-consumption of PV and the energy imported/exported to the grid for a case study are provided, which shows that simulations based on the monthly load profile have a significant reduction of 43% for energy sent to/from the grid compared to the detailed hourly simulation and an increase from 30% to 60% for self-consumption and self-sufficiency. These results show the importance of more granular modeling and also indicate mismatches of PV generation and HP load based on hourly simulation datasets. The back-calculation PV sizing algorithm combined with HP and thermal loads presented in this study exhibited robust performance. The results indicate this approach can be used to accelerate the solar electrification of heating and cooling to offset the use of fossil fuels in northern climates.

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Section: Discussionmentioning

confidence: 99%

Residential Sizing of Solar Photovoltaic Systems and Heat Pumps for Net Zero Sustainable Thermal Building Energy

Rana,

Jamil,

Asgari

et al. 2024

Computation

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“…Heat pumps in China cost less than those in Europe or the United States, as low as RMB 18,000, but also have a wide cost range (Zhou et al, 2022). Heat pumps can be combined with thermal energy storage for improving overall performance and efficiency, preventing frosting, increasing self-consumption, load shifting, and participating in demand response programs (Ermel et al, 2022;Jung et al, 2017;Lin, Fan, et al, 2022;Meng et al, 2021). Well-insulated buildings themselves can act as a thermal battery depending on thermal inertia, which could combine with heat pumps to reduce electricity costs and increase selfconsumption (Fischer et al, 2015;Pinamonte et al, 2020).…”

Section: Rural Energy Use In Chinamentioning

confidence: 99%

Synergies between China's Whole County photovoltaic program and rural heat pump adoption

Hove

2023

WIREs Energy & Environment

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Electrification of heating, particularly with highly‐efficient heat pumps, is increasingly viewed as essential for reaching the targets of the Paris Climate Agreement. China has promoted replacement of dirty coal heating in rural areas. More recently China has also begun promoting distributed solar photovoltaic (PV) energy as a rural development strategy, particularly with the launch of the Whole County PV pilot program in 2021. While several studies have examined the economics of heat pump adoption, with or without solar PV, the Whole County PV program has not been specifically studied. Further, many prior studies utilize monthly average solar production or temperature ranges. This study examines the economics of heat pumps in participating counties in the Whole County PV program, employing hourly data for both PV output and ambient temperature in participating counties. The analysis shows that pairing residential heat pumps with PV in counties in Shandong, Henan, and Jiangsu would result in short economic payback periods versus gas or resistance heat, while also increasing self‐consumption of PV. The results suggest that expanding the Whole County PV program to incorporate energy efficiency and heating/cooling measures represents an economically attractive way to accelerate the rural energy transition and improve rural livelihoods. Such a policy would help accelerate the low‐carbon energy transition, reduce air pollutant emissions, and help address oversupply of midday PV output in local areas. Barriers to the approach include involvement of different government ministries, the cost of upgrading building insulation, the design of building codes, and the structure of electricity tariffs.This article is categorized under: Sustainable Energy > Solar Energy Energy and Power Systems > Electrification Cities and Transportation > Buildings

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“…While through the comparison of electricity prices in different years, it can be clearly seen that the overall electricity price has risen significantly. Thermal energy storage implemented in residential heating systems has attracted attention for its role on peak load shifting to reduce heating costs [20,21]. The LHTES is favourable due to the high energy density, small volume change of phase change material (PCM) in melting and in solidification processes [22,23].…”

Section: Introductionmentioning

confidence: 99%

Techno-Economic Analysis of Latent Heat Thermal Energy Storage Integrated Heat Pump for Indoor Heating

Shan

Chiu

2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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Electricity prices have increased significantly in Europe and other regions due to the recent energy crisis. Latent heat thermal energy storage (LHTES) implemented in residential heating systems has attracted attention for its role in peak/load shifting to reduce heating costs. A new layout with LHTES integrated with a heat pump (HP) is proposed here to store low grade heat during off-peak demand periods, later used as heat source for the heat pump during peak demand periods. This novel layout is assessed for its heat capacity variation and levelized cost of energy (LCOE). The results show that increased amount of power input is required when a storage component is integrated into the heating system, while it can be compensated by shifting to off-peak electricity usage.

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Thermal storage integrated into air-source heat pumps to leverage building electrification: A systematic literature review

Cited by 20 publications

References 81 publications

Residential Sizing of Solar Photovoltaic Systems and Heat Pumps for Net Zero Sustainable Thermal Building Energy

Residential Sizing of Solar Photovoltaic Systems and Heat Pumps for Net Zero Sustainable Thermal Building Energy

Synergies between China's Whole County photovoltaic program and rural heat pump adoption

Techno-Economic Analysis of Latent Heat Thermal Energy Storage Integrated Heat Pump for Indoor Heating

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