Evaluation of low temperature waste heat as a low carbon heat resource in the UK

Davies, G.; Lagoeiro, H.; Turnell, H.; Wegner, M.; Foster, A.; Evans, J.; Revesz, A.; Leiper, A.; Smyth, K.; Hamilton, J.; Cooke, H.; Maidment, G.

doi:10.1016/j.applthermaleng.2023.121283

Cited by 11 publications

(2 citation statements)

References 27 publications

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“…Heat transfer is an efficient measure of waste heat recovery from medium-and high-temperature sources, such as an air preheater collecting waste heat from an oven (270 • C) [8] and a waste heat boiler absorbing waste heat from a coal-fired power plant (1000 • C) [9]. However, the utility of waste heat is limited by its low temperature [10]. Therefore, it is necessary to increase the temperature of waste heat and distribute it to more heat users [11].…”

Section: Introductionmentioning

confidence: 99%

Advanced Exergy and Exergoeconomic Analysis of Cascade High-Temperature Heat Pump System for Recovery of Low-Temperature Waste Heat

Hu,

Shi,

Liu

et al. 2024

Energies

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Cascade high-temperature heat pumps (CHTHPs) are often applied to recover low-temperature industrial waste heat owing to their large temperature lift. Through a comprehensive consideration of thermodynamic and economic performance, conventional and advanced exergy and exergoeconomic analyses are employed in this study to evaluate the potential for the improvement in CHTHP systems. The results show that the avoidable endogenous exergy destruction in a CHTHP system accounts for 62.26% of its total exergy destruction, indicating that most of the exergy destruction comes from the components. This suggests that CHTHP systems still have significant potential for improvement. The very low exergoeconomic factor of the total system (only 0.75%) implies that the exergy destruction cost has a great influence on the economic performance of a CHTHP system. The high- and low-temperature compressors are the two components with the highest exergy destruction, accounting for 34.14% and 26.79% of the total exergy destruction in the system, respectively. Moreover, their exergy destruction cost is much larger than that of the other components. Thus, the priorities for improvement should be the high- and low-temperature compressors. The decrease in exergy destruction in compressors produces a reduction in carbon emissions. This comprehensive analysis of thermodynamic and economic performance supplies guidance for the engineering application of CHTHPs in low-temperature waste heat recovery.

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Section: Introductionmentioning

confidence: 99%

Advanced Exergy and Exergoeconomic Analysis of Cascade High-Temperature Heat Pump System for Recovery of Low-Temperature Waste Heat

Hu,

Shi,

Liu

et al. 2024

Energies

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“…The coal is an important fossil energy source in China. It is significant to carry out research on energy saving and consumption reduction , in the coal-fired power plants. At present, there are two main aspects of waste heat loss in the coal-fired power plants, respectively, for the waste heat of turbine exhaust steam and the waste heat of saturated flue gas .…”

Section: Introductionmentioning

confidence: 99%

Research on Thermodynamic Characteristics of the Saturated Flue Gas Waste Heat Recovery to Reduce Turbine Extraction Steam

Teng,

Lu,

Chen

et al. 2023

ACS Omega

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Super‐liquid‐repellent thin film materials for low temperature latent heat thermal energy storage: A comprehensive review of materials for dip‐coating

Muhumuza,

Eames

2024

Energy Storage

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When discharging latent heat thermal energy storage (LHTES) systems, performance is influenced by the formation and adherence of a solid layer of phase change material (PCM) on heat eXchange (HX) surfaces. Super‐liquid‐repellent thin films (STFs) may be able to reduce solidifying PCM adhesion on HX surfaces during discharging, delay PCM solidification to lower temperatures, and by modifying nucleation sites potentially enable long‐term seasonal thermal storage. Techniques employed previously to fabricate sintered polymeric STF coatings include chemical vapour deposition, dip‐coating, spray‐coating, spin‐coating, layer‐by‐layer (LbL) assembly, sol‐gel, anodizing, electrodeposition, electrospinning, so on. Dip‐coating is considered attractive for fabricating thin films on simple and complex surface geometries due to process maturity, scalability, flexibility and cost‐effectiveness. To identify suitable materials for preparing STFs on metal HX surfaces using the dip‐coating process, more than 200 journal articles published in English during the period 2010 to 2022 were reviewed and the potential role of STFs in LHTES applications was assessed. The review identified key areas and applications stimulating STF material developments and formulations. The dip‐coating of potential STF materials was classified under three major themes driving current research and development (R&D) activities, that is, high performance thin films, eco‐friendly thin films and fundamental research formulations. This review provides a platform from which to develop coatings and HX systems to enable the cost‐effective implementation of STFs for improved heat transfer in future mobile/stationery LHTES systems.

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Evaluation of low temperature waste heat as a low carbon heat resource in the UK

Cited by 11 publications

References 27 publications

Advanced Exergy and Exergoeconomic Analysis of Cascade High-Temperature Heat Pump System for Recovery of Low-Temperature Waste Heat

Advanced Exergy and Exergoeconomic Analysis of Cascade High-Temperature Heat Pump System for Recovery of Low-Temperature Waste Heat

Research on Thermodynamic Characteristics of the Saturated Flue Gas Waste Heat Recovery to Reduce Turbine Extraction Steam

Super‐liquid‐repellent thin film materials for low temperature latent heat thermal energy storage: A comprehensive review of materials for dip‐coating

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