Strategies for a transition towards a solar district heating grid with integrated seasonal geothermal energy storage

Formhals, Julian; Feike, Frederik; Hemmatabady, Hoofar; Welsch, Bastian; Sass, Ingo

doi:10.1016/j.energy.2021.120662

Cited by 24 publications

(6 citation statements)

References 22 publications

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“…The study evaluated mixtures of non-renewable and renewable fuels in terms of their degrees of pollution damage; this has generally not been explored in the past. The earlier literature is mainly limited to the use of nuclear energy [33][34][35], biomass fuel [36,37], solar energy [38,39], wind energy [40,41], hydropower [42,43], and geothermal energy [44,45] sources in different economic settings. In comparison, the literature has largely overlooked the use of coal and brown coal and refined oil in the global data set, which is essential for formulating a sustainable policy agenda.…”

Section: Hypotheses 3 (H3) the Production Of Refined Oil Will Likely ...mentioning

confidence: 99%

Assessing Hybrid Solar-Wind Potential for Industrial Decarbonization Strategies: Global Shift to Green Development

et al. 2021

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The global energy mix is shifting from fossil fuels to combinations of multiple energy storage and generation types. Hybrid energy system advancements provide opportunities for developing and deploying innovative green technology solutions that can further reduce emissions and achieve net-zero emissions by 2050. This study examined the impact of an increasing share of wind and solar electricity production on reducing carbon intensity by controlling coal and lignite domestic consumption and the production of refined oil products in a world aggregated data panel. Data covering the last three decades were used for the analysis by the ARDL bounds testing approach. The results showed that an increasing share of wind and solar electricity production would be helpful to decrease carbon intensity in the short and long term. On the other hand, a 1% increase in coal and domestic lignite consumption increased carbon intensity by 0.343% in the short run and 0.174% in the long run. The production of refined oil products decreases carbon intensity by 0.510% in the short run and 0.700% in the long run. However, refining oil products is associated with positive and negative environmental externalities. The positive aspect depends upon the removal of harmful pollutants and the production of cleaner-burning fuels, while the negative part is related to the operational side of refineries and processing plants that may release contaminants into the atmosphere, affecting global air and water quality. Hence, it is crucial to improve processing and refining capacity to produce better-refined oil products by using renewable fuels in energy production. It is proposed that these are the most cost-effective pathways to achieve industrial decarbonization.

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Section: Hypotheses 3 (H3) the Production Of Refined Oil Will Likely ...mentioning

confidence: 99%

Assessing Hybrid Solar-Wind Potential for Industrial Decarbonization Strategies: Global Shift to Green Development

et al. 2021

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“…Combining SDH with geothermal energy, as a source of energy [7] or seasonal TES [2], where resources are available, could also increase the amount of natural gas offset in winter months. Cornell University is currently developing a deep geothermal system, also called Earth Source Heat (ESH), for providing low-carbon heating to its main campus in Ithaca, New York, and helping to become a carbon-neutral university by 2035.…”

Section: Discussionmentioning

confidence: 99%

“…Flat plate collectors (FPCs) and parabolic trough collectors (PTCs) are two examples of solar thermal technologies that have been used either as single technologies or as a hybrid for district heating applications [1]. FPCs have lower thermal efficiency than PTCs due to their higher heat losses [2]. FPCs are well-known systems for water heating but PTCs are not deployed as much.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Solar Thermal Energy System for District Heating Application

Akar,

Kurup,

Boyd

et al. 2024

SolarPACES Conf Proc

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Solar district heating (SDH) systems can be good alternatives to conventional systems when they are optimized with hybrid configurations and thermal energy storage (TES). In this scope, a hybrid renewable thermal energy system (RTES) model has been built combining flat plate collector (FPC) solar system with parabolic trough collector (PTC) system via a heat exchanger and coupled with TES. To undertake the hybridization of the system, System Advisor Model (SAM) software was modified, which allowed control over configurations and more accurate modelling of heat transfer between the collectors. The model is first compared to an existing hybrid solar district heating systems (DHS) system in Taars, Denmark. The results showed a good correlation with an overestimation of only 6.4% compared to most recent heat output. Then the same system configuration was modeled in different geographic locations to investigate the impact of changes in direct normal irradiance (DNI) to the heat sink thermal output of the hybrid system. The results showed that the annual net thermal power output in California, USA can be three times more than the annual net thermal power output in Taars, Denmark. Finally, multiple hybrid configurations with varying solar field sizes were simulated based on the heat demand of two different university campuses DHS. The results showed that, retrofit applications of this hybrid DHS system coupled with TES could reduce the natural gas consumption of the existing systems between 25% and 41%. The use of hybrid RTES highlighted in this paper can be extended to many more opportunities.

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“…They are mainly used to reduce the capital cost of installation and to avoid ground thermal imbalance (heat accumulation or thermal depletion). However, most of these hybrid systems are used for heating or power generation by combining GE and solar energy subsystems [37,38].…”

Section: Ground-cooled Condensermentioning

confidence: 99%

An investigation on organic Rankine cycle incorporating a ground-cooled condenser: Working fluid selection and regeneration

Mahmoud

Alkhedher

Ramadan

et al. 2022

Energy

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Strategies for a transition towards a solar district heating grid with integrated seasonal geothermal energy storage

Cited by 24 publications

References 22 publications

Assessing Hybrid Solar-Wind Potential for Industrial Decarbonization Strategies: Global Shift to Green Development

Assessing Hybrid Solar-Wind Potential for Industrial Decarbonization Strategies: Global Shift to Green Development

Hybrid Solar Thermal Energy System for District Heating Application

An investigation on organic Rankine cycle incorporating a ground-cooled condenser: Working fluid selection and regeneration

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