Techno-economic optimization of large-scale deep geothermal district heating systems with long-distance heat transport

Molar-Cruz, Anahi; Keim, Maximilian F.; Schifflechner, Christopher; Loewer, Markus; Zoßeder, Kai; Drews, Michael; Wieland, Christoph; Hamacher, Thomas

doi:10.1016/j.enconman.2022.115906

Cited by 23 publications

(14 citation statements)

References 42 publications

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“…Nevertheless, future research can expand these qualities. Regarding flexibility, geothermal energy is a dispatchable technology to consider but excluded in this study due to a lack of data on regional potentials [64,65]. Similarly, there is interest in carbon capture, utilization, and storage from a flexibility perspective [66].…”

Section: Discussionmentioning

confidence: 99%

How flexible electrification can integrate fluctuating renewables

Göke¹,

Weibezahn²,

Kendziorski³

2023

Preprint

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To phase-out fossil fuels, energy systems must shift to renewable electricity as the main source of primary energy. In this paper, we analyze how electrification can support the integration of fluctuating renewables, like wind and PV, and mitigate the need for storage and thermal backup plants. Using a cost minimizing model for system planning, we find substantial benefits of electricity demand in heating, transport, and industry adapting to supply. In Germany, flexible demand halves the residual peak-load and the residual demand and reduces excess generation by 80%. Flexible operation of electrolyzers has the most significant impact accounting for 42% of the reduction in residual peak-load and 59% in residual demand. District heating networks and BEVs also provide substantial flexibility, while the contribution of space and process heating is negligible. The results are robust to restrictions on the expansion of the transmission grid.

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Section: Discussionmentioning

confidence: 99%

How flexible electrification can integrate fluctuating renewables

Göke¹,

Weibezahn²,

Kendziorski³

2023

Preprint

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“…Governance of the coordination between geothermal energy generators and the transmission and distribution networks is required to ensure that this does not prevent optimal use of geothermal power (Brunekreeft, 2015;Kallies et al, 2021). Similarly, deep geothermal operators that produce heat need a customer(s) to sell this to, unless they are the sole consumer of the abstracted heat, and heat has the additional challenge of higher energy losses than electricity during transportation which can limit it to more local use (Molar-Cruz et al, 2021).…”

Section: Risks and Barriers Relating To Deep Geothermal Energymentioning

confidence: 99%

The role of regulation in geothermal energy in the UK

McClean

Pedersen

2023

Energy Policy

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“…Developing renewable energy is very important as it can reduce pollution to the environment caused by heating 1,2 . In addition to solar and biomass energy, geothermal energy can play an important role in decarbonizing the heating sector 3 . In addition to the high pollution caused by fuel, there are other problems to be solved in the heating system, such as the heat loss of the heat transmission pipe network and the heating on demand.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 In addition to solar and biomass energy, geothermal energy can play an important role in decarbonizing the heating sector. 3 In addition to the high pollution caused by fuel, there are other problems to be solved in the heating system, such as the heat loss of the heat transmission pipe network and the heating on demand. Heating in the market has always been an important urban centralized heating system direction.…”

Section: Introductionmentioning

confidence: 99%

Various disturbances propagation analysis of district heating system based on the standardized thermal resistance method

Chen,

Wang,

Hao

et al. 2023

Energy Science & Engineering

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Various heating disturbances and faults in the heating network are necessary to be controlled and handled by some intelligent heating strategies with the increasing complexity of the heating network. This paper constructed the dynamic modeling of the heating system using standard thermal resistance and obtained a dynamic heat current model of the heating system. On this basis, we analyzed the heat transfer performance of the heating system. Five disturbances are selected, including the behavior of users, indoor heat source, heat exchanger heat transfer performance deterioration, pipe blockage, and pipe leakage. The effects of different disturbances on the overall system and user side water supply temperature were obtained by establishing a dynamic model for segmented heating pipelines. Feasible control methods for the heating network and load side are sorted out, mainly changing the water supply's temperature and the water supply's flow rate to reduce the water supply's fluctuation. Five specific control strategies are proposed for five types of disturbances. Comparing the case without control and the case with control, the results show that the fluctuation of water supply temperature is significantly reduced, and the control strategies can reduce the impact of disturbances on the heat network system and customers and improve the comfort of customers in the presence of disturbances. under the disturbance of pipeline leakage, the method proposed in this article reduces the temperature fluctuation amplitude by 75% and the fluctuation duration by 60%.

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Techno-economic optimization of large-scale deep geothermal district heating systems with long-distance heat transport

Cited by 23 publications

References 42 publications

How flexible electrification can integrate fluctuating renewables

How flexible electrification can integrate fluctuating renewables

The role of regulation in geothermal energy in the UK

Various disturbances propagation analysis of district heating system based on the standardized thermal resistance method

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