Assessment of a combination of three heat sources for heat pumps to supply district heating

Pieper, Henrik; Ommen, Torben Schmidt; Elmegaard, Brian; Markussen, Wiebke Brix

doi:10.1016/j.energy.2019.03.165

Cited by 43 publications

(15 citation statements)

References 21 publications

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“…It must be highlighted that this scale effect is even more noticeable in real district heating systems, as the combination of different energy sources allows the efficiency to be enhanced through the modulation and supply chain of the different used fuels. This effect was not shown in this study, as it focused on theoretical cases across Europe (single energy source with a natural gas complement), but it was demonstrated in [75] for heat pumps and in [76] for solar-assisted groundwater sourced heat pumps.…”

Section: Conclusion and Discussionmentioning

confidence: 73%

Life Cycle Assessment of District Heating Systems in Europe: Case Study and Recommendations

Jeandaux¹,

Videau²,

Prieur‐Vernat³

2021

Sustainability

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District heating systems are a way to integrate renewable energies into the heating sector, with the primary aim of decarbonizing this final use. In such systems, renewable energy sources are centrally managed with cutting-edge technological equipment, efficient maintenance rates and service guarantees. Both the decarbonization effect and the centralization lead to environmental benefits, which can go beyond the climate change indicator. In this study, life cycle assessment was used to assess the environmental sustainability of district heating solutions compared to standalones. The study aimed to examine a diverse set of options for large-scale district heating systems across Europe and to compare them to different standalone solutions. Eight technologies (five district-level and three standalone solutions) were analyzed in two densities of habitats and four areas of Europe. This study aimed to understand the drivers of district heating environmental performance and to provide guidelines for accounting said performance. The analysis showed better performance for district heating scenarios compared to isotechnology standalones for every environmental impact category: the climate change impact category were reduced from 5 to 90%, while respiratory inorganics were reduced from 45 to 64%, depending on the considered climatic area. This statement was true under key parameters, both technical and methodological—efficiencies and complement rates, but also the neutral carbon principle for biomass energy accounting and allocation rules.

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Section: Conclusion and Discussionmentioning

confidence: 73%

Life Cycle Assessment of District Heating Systems in Europe: Case Study and Recommendations

Jeandaux¹,

Videau²,

Prieur‐Vernat³

2021

Sustainability

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“…However, when domestic electricity demand is reduced, the shift to district heating might increase the risk of export to drain reservoirs. Pieper et al [133] reported the influence on the seasonal coefficient of performance (SCOP) of a DHC system when introducing seawater, groundwater, air and a combination of the three as energy sources. The results showed that the optimum proportions of DHC capacity with groundwater, seawater and air heat pumps were 63%, 14% and 23%, respectively.…”

Section: Development Of District Heating Systemmentioning

confidence: 99%

Recent Advances in Low-Carbon and Sustainable, Efficient Technology: Strategies and Applications

et al. 2022

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The COVID-19 pandemic has had a significant impact on the supply chains of traditional fossil fuels. According to a report by the International Energy Agency (IEA) from 2020, oil-refining activity fell by more than the IEA had anticipated. It was also assumed that the demand in 2021 would likely be 2.6 million bpd below the 2019 levels. However, renewable markets have shown strong resilience during the crisis. It was determined that renewables are on track to meet 80% of the growth in electricity demand over the next 10 years and that sustainable energy will act as the primary source of electricity production instead of coal. On the other hand, the report also emphasized that measures for reducing environmental pollution and CO2 emissions are still insufficient and that significant current investments should be further expanded. The Sustainable Development of Energy, Water and Environment Systems (SDEWES) conference series is dedicated to the advancement and dissemination of knowledge on methods, policies and technologies for improving the sustainability of development by decoupling growth from the use of natural resources. The 15th SDEWES conference was held online from 1–5 September 2020; more than 300 reports with 7 special sections were organized on the virtual conference platform. This paper presents the major achievements of the recommended papers in the Special Issue of Energies. Additionally, related studies connected to the above papers published in the SDEWES series are also introduced, including the four main research fields of energy saving and emission reduction, renewable energy applications, the development of district heating systems, and the economic assessment of sustainable energy.

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“…Here, I assume that all the residential heating systems will be replaced by heat pumps with an average coefficient of performance (COP) of 2.0. Higher COP's are possible by using a heat source with a higher temperature, that can be used to update these estimations; see, e.g., [32][33][34].…”

Section: Low-temperature Heatmentioning

confidence: 99%

Quantifying the role of liquid hydrocarbons in the current and future energy balance of a self-sufficient Denmark

Eftekhari¹

2021

Preprint

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Denmark is a pioneer in the large-scale extraction of the sustainable energy of the wind, especially in theelectricity sector which supplies most of the Danish electricity consumption. A combination of these recentDanish successes, and the increased societal demand for the reduction of carbon dioxide emission in light ofthe recent IPCC report, has created the expectation of a fast transition from fossil fuel to sustainable energyresources in all energy sectors. Although this transition is inevitable due to the unsustainable nature of fossilfuels and the declining Danish oil and gas production, there is still an ongoing discussion, sometimessupported by qualitative evidence, on its possibility, extent, and urgency.This paper that is inspired by a true story of an unsuccessful date between a petroleum engineeringcolleague and a Danish environmentalist has a quantitative look at the future energy balance of Denmark byestimating the future energy consumption of a typical Dane and comparing it with the available renewableand non-renewable energy resources. It also suggests and compares different scenarios for a self-sufficientDenmark with 100% renewable energy, considering the available land and shallow sea and the footprint ofthe energy extraction and storage methods in Denmark. The results show that if the intermittency problem ofthe wind energy is addressed in the future, there is still a large demand, mostly from the transport sector, forliquid fuels with high energy-density, which needs to be addressed by a paradigm shift in transporttechnologies or large scale implementation of power to fuel technologies with a sustainable carbon source.

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Assessment of a combination of three heat sources for heat pumps to supply district heating

Cited by 43 publications

References 21 publications

Life Cycle Assessment of District Heating Systems in Europe: Case Study and Recommendations

Life Cycle Assessment of District Heating Systems in Europe: Case Study and Recommendations

Recent Advances in Low-Carbon and Sustainable, Efficient Technology: Strategies and Applications

Quantifying the role of liquid hydrocarbons in the current and future energy balance of a self-sufficient Denmark

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