Smart thermal networks for smart cities – Introduction of concepts and measures

Schmidt, Ralf-Roman; Pol, Olivier; Basciotti, Daniele; Page, Jessen

doi:10.1051/epjconf/20123304002

Cited by 5 publications

(7 citation statements)

References 4 publications

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“…Urban networks (power grids, gas grids, thermal grids, waste water grid) will interact in the future to ensure reliable energy supply and maximum energy efficiency [2]. This is the only way we can achieve high living standards, security of heat supply, climate change ISSN 2286-2455 mitigation [8] and sustainability of energy resources at the same time.…”

Section: Discussionmentioning

confidence: 99%

“…Schmidt et al (2012) consider that smart thermal grids will play an important role in the future of urban energy systems. Smart thermal networks need additional metering and controlling capabilities to match supply and demand profiles [8]. As heat generation from renewable sources is variable and fluctuating, thermal energy must be stored, in order to be available when it's needed.…”

Section: The Smart Thermal Grid Conceptmentioning

confidence: 99%

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Smart Thermal Grids – A Review

Stănişteanu

2017

The Scientific Bulletin of Electrical Engineering Faculty

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Abstract. In line with the Renewable Energy Directive (2009/28/EC), EU member states have intensified their efforts to increase the share of renewable energy in energy supply. Renewable energy sources will be a challenge for the current district heating concept, requiring system flexibility both in terms of heat supply and heat consumption. Besides, they are hard to accommodate in areas with high population density, as it is the case with many towns and cities. The municipalities will have to identify suitable locations, which in turn will lead to distributed heat supply. The requirement of the 2010/31/EU (EPBD) Directive that all new buildings will have to be nearzero energy buildings will result in buildings fitted with solar collectors; some buildings will produce more energy than they can use. To accommodate all these challenges, the scientists have come up with the new concept of Thermal Smart Grids. The renewable energy will then be shared with the whole district heating grid, and the network will also be used for heat storage when consumption is lower than production. Smart thermal grids are expected to be an integrated part of the future smart energy systems, integrated electricity, gas and thermal grids.

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Section: Discussionmentioning

confidence: 99%

Section: The Smart Thermal Grid Conceptmentioning

confidence: 99%

Smart Thermal Grids – A Review

Stănişteanu

2017

The Scientific Bulletin of Electrical Engineering Faculty

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“…Together, this can also change the HSR. In European countries, research is actively being conducted on the use of low-temperature HSS in zones with low load densities [22][23][24]. These studies have shown that the construction of low temperature HSS can be economically feasible and will allow expanding the zone of district heating, especially with the use of renewable resources and secondary energy sources [25].…”

Section: Assessing the Impact Of Technical And Economic Indicators Of Hss On The Hsr Valuementioning

confidence: 99%

Optimization of the district heating zones

2018

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A method for determining the optimal action zones of the centralized sources of thermal energy is developed using the calculation of the effective heat supply radius of consumers. The methodology allows to take into account the features of heat supply systems’ functioning, their technical and economic indicators, the uneven distribution of heat loads throughout the city, and limitations on the reliability of the system. Practical implementation of the proposed methodology on the scheme of operating a heat supply system is presented, the results of calculating the effective heat supply radius with their subsequent correction for reliability requirements are obtained. The application of this technique in the development of heat supply schemes for cities will allow to determine the boundaries of effective heat supply radii in all directions of the mains of heat networks, taking into account the optimal flow distribution of the coolant in them and the sections’ technical characteristics.

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“…The thermocline model is depicted in figure 6. 16. The variable z describes the relative height of the tank.…”

Section: Thermocline Storage Modelmentioning

confidence: 99%

“…Especially the participation of the CHP plants in different electricity markets (not only day-ahead spot markets) could increase the economy of the operation. [3], [15] From a global perspective, smart electrical and smart thermal grids are part of the infrastructure of future smart cities [16]. The combination of the different smart energy grids (electricity, thermal, and gas) is defined as a smart energy 1.2 Background system [17].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Framework and Associated Methodology for the Design, Operative Planning, and Operation of District Heating Systems to Facilitate the Transition Towards a Fully Renewable Heat Supply

Lorenzen¹

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District heating systems (DHSs) are a mature technology for an efficient heat supply in cities. In the context of the climate crisis and the related goal of a decarbonized heating sector, DHSs play an ambivalent role. As existing DHSs are mostly based on fossil fuels, they are part of the problem. However, as they can also integrate renewable heating plants, DHSs offer a great potential to support the transition towards a fossil-free heat supply.This transition is hindered by several barriers. For example, low supply temperatures are needed for the economically efficient integration of renewable heating plants. However, since existing fossil heating plants marginally benefit from a reduction of the temperature, a lock-in effect to the established business models exists. In the current research, resolving the barriers is focused either on individual solutions for specific issues or on heat strategies for a general level. Since the barriers are strongly interrelated, district heating (DH) companies require a systemic transition methodology for their specific activities in the different fields of planning and operation. Since such a transition methodology is identified as lacking in the literature, this thesis aims to develop a comprehensive methodology that facilitates the transition in an economically efficient way.To develop such a transition methodology, this thesis introduces a framework approach that combines new and existing independent concepts and that is built on a newly developed structure of eight "DH scopes." These DH scopes classify the activities in the different fields of DH concerns. To address the planning and operation activities in DH companies, these activities are integrated into the new "framework" that is classified according to the three DH scopes "design," "operative planning," and "operation." The framework summarizes the related activities according to processes and links them using technical and economic mechanisms. These mechanisms are considered in such a way that all activities are incentivized iii in the often-stressful times. I would like to thank my friends Sarah and Michael for their feedback on the dissertation at an earlier stage.Finally, I would also like to thank my family for their support. Particularly, I want to say thank you to my parents, who have always supported me. Especially during the height of the pandemic, they supported me mentally by making certain "demolition activities" possible.Thank you all very much! Now I hope that you enjoy reading and browsing through this dissertation,

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Smart thermal networks for smart cities – Introduction of concepts and measures

Cited by 5 publications

References 4 publications

Smart Thermal Grids – A Review

Smart Thermal Grids – A Review

Optimization of the district heating zones

A Comprehensive Framework and Associated Methodology for the Design, Operative Planning, and Operation of District Heating Systems to Facilitate the Transition Towards a Fully Renewable Heat Supply

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