Hourly energy analysis and feasibility study of employing a thermocline TES system for an integrated CHP and DH network

Tehrani, S. Saeed Mostafavi; Saffar‐Avval, Majid; Kalhori, Sahand Behboodi; Mansoori, Z.; Sharif, M. K Anuar

doi:10.1016/j.enconman.2013.01.020

Cited by 46 publications

(6 citation statements)

References 23 publications

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“…• Participation possible for all CHP sizes 25,36,48,53 Ancillary markets • Provision of automatic primary reserve possible • Low investment costs for participation in primary reserve market 36,48,51,77 Heat market • Participation in high-temperature markets possible • Support of operation of DH by decentralized CHP 36,47,54,59,60 Thermal storages Local heat market • Hot water tanks for central storage 24,34,58,59 Power to gas Ancillary markets • Provision of regulation reserve on annual and hourly markets 69,78 Local heat market • Usage for DH with central hydrogen storage 66 • Low storage losses • High storage capacities [79][80][81][82] • Posing of battery guarantee issues and social burden 63,80,82 • Participation in building energy management systems • Avoidance of investment costs through fleet storage 83,84 • Essential need for wide-spread charging infrastructure • Necessity of "critical mass" of EVs • Further optimization of EV charging required 63,79,83 • Integration of RES through flexible charging demand • Load shifting • Compensation of wind fluctuations 79,82,85-89 90 • Need for standards for software and communication networks • Privacy issues due to data submission 63,79,83 • Voltage control and frequency regulation • Reduction of grid ramp rates • Increase in grid efficiency 79,…”

Section: Spot Marketsmentioning

confidence: 99%

Locating experts and carving out the state of the art: A systematic review on Industry 4.0 and energy system analysis

et al. 2019

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Summary As Germany's manufacturing industry highly depends on international competitiveness, German companies must rapidly assimilate to current processes of digitization and so‐called Industry 4.0. These processes will also affect the German energy system. Understanding and predicting the implications of these changes is one of the core elements of energy system analysis. To address this issue, herein, we present a structured and systematic review of literature within the intersection of industrial digitalization in the sense of Industry 4.0 and scientific energy system analysis. The goals of this study are (1) to reveal the locations and institutions of relevant experts and (2) to carve out the current state of the art with regard to technologies that enable (digitized) industries to interact with the energy system in order to contribute to a smart energy system. Our approach is based on a systematic and reproducible keyword search using the scientific literature database Scopus. Both a quantitative evaluation and a qualitative evaluation of the relevant literature are conducted. The quantitative results are presented using GIS‐based visualizations. This facilitates us to identify the European Union as main contributor on a global level and the United Kingdom as the most prolifically publishing country within the European Union. Focusing on Germany, we find North Rhine‐Westphalia to be the most scientifically active area and Aachen/Dortmund to be the cities where most publications originate. In the qualitative, content‐based part of this review, we show that in particular sector coupling and the integration of distributed energy prosumers can lead to a working smart energy system. We demonstrate that industrial digitalization processes in the sense of Industry 4.0 can serve as enabling factor in this respect. Further, we provide extensive summaries regarding both the technological and economic potentials and challenges of different technologies in future smart energy systems. Taking all of the results into account, we outline a framework to connect the highly discussed topics of digitalized industries and smart energy systems to corresponding experts.

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Section: Spot Marketsmentioning

confidence: 99%

Locating experts and carving out the state of the art: A systematic review on Industry 4.0 and energy system analysis

et al. 2019

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“…Solid-state packed-bed storage media experience a high degree of temperature stratification due to the large density difference of hot and cold fluid and can form a thermocline region between hot and cold regions which is susceptible to mixing. The thermocline region needs to be minimized to maximize high temperature storage. ,− …”

Section: Low-cost Thermal Energy Storagementioning

confidence: 99%

Challenges and Roadmap for Solar-Thermal Desalination

Zheng,

Cáceres González,

Hatzell

et al. 2023

ACS EST Eng.

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Decarbonizing desalination systems requires combining renewable energy technologies with desalination systems. Solar thermal desalination, which combines a thermal desalination system (e.g., distillation, multistage flash, etc.) with a concentrated solar system is attractive in geographic regions with an abundance of saline water and solar energy. However, the high economic cost and low efficiency limits its adoption. This review provides an overview of the techno-economic, materials, and performance challenges that need to be overcome to realize solar-desalination. The review describes the four most prominent pathways for overcoming thermodynamic and cost limitations present in current systems. Specifically, methodologies and approaches such as direct solar evaporation structures, low-cost thermal energy storage, solar cogeneration schemes for power and desalination, and solar hybrid desalination are discussed. These strategies can enable solar thermal desalination technologies that are resilient to intermittent solar energy.

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“…The Waste Heat Recovery System (WHRS) proposed to answer these challenges (Fig. 4) is made up of a thermocline energy storage (TES) unit [17,18] and a conventional, electrically-driven water/water heat pump (HP).…”

Section: System Descriptionmentioning

confidence: 99%

Energy- and exergy-based optimal designs of a low-temperature industrial waste heat recovery system in district heating

Fitó

Hodencq

Ramousse

et al. 2020

Energy Conversion and Management

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This paper illustrates how the choice of indicators changes the design of a waste heat recovery system in district heating. A prospective system in Grenoble (France) aims to valorize waste heat from the French National Laboratory of Intense Magnetic Fields (LNCMI) by injecting it at 85 °C to the nearby district heating network. We optimize its design for three possible waste heat temperatures: 35 °C (current), 50 °C (viable) and 85 °C (innovative). As major components, the system includes a thermal storage (ranging from 10 MWh to 40 MWh) and may include a heat pump depending on the waste heat's temperature. Different optimizations are guided by two energetic indicators (one source-oriented, the other demand-oriented) and by the overall exergy efficiency. The system's annual performance is assessed through the Sankey and Grassman diagrams and compared between optimal designs. Yearly simulation included optimal management of the thermal storage, through mixedinteger linear programming. The demand-oriented optimal design suggests recovering waste heat at 35 °C with a heat pump and a 40-MWh storage, granting the highest coverage of residential needs (49 %). On the other hand, the source-oriented optimal design suggests recovering waste heat at 85 °C without heat pump and with a 40-MWh storage, reaching the highest recovery of waste heat (55 %). Exergy analysis supports the source-oriented design, as it reaches the highest global exergy efficiency (27 %). Our prospective techno-economic and exergoeconomic analyses should complement these results and may change some conclusions, especially regarding the storage capacity.

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Hourly energy analysis and feasibility study of employing a thermocline TES system for an integrated CHP and DH network

Cited by 46 publications

References 23 publications

Locating experts and carving out the state of the art: A systematic review on Industry 4.0 and energy system analysis

Locating experts and carving out the state of the art: A systematic review on Industry 4.0 and energy system analysis

Challenges and Roadmap for Solar-Thermal Desalination

Energy- and exergy-based optimal designs of a low-temperature industrial waste heat recovery system in district heating

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