Performance comparison between H2‐metal hydrides and CO2‐adsorbents‐based sorption refrigeration systems
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Energy Research"
DOI: 10.1002/er.6370
Abstract: In the present study, the performance of H2‐metal hydrides‐based (HSRS) and CO2‐adsorbent‐based refrigeration systems (CSRS) are investigated and compared. The pair of metal hydrides (MH) used for HSRS is La0.9Ce0.1Ni5‐LaNi4.7Al0.3 whereas, for CSRS, it is… read more here.
Keywords: refrigeration; performance; metal hydrides; refrigeration systems ... See more keywords
Nanorefrigerants for energy efficient refrigeration systems
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-017-0746-4
Abstract: Nanorefrigerants, which are a new class of nanofluids, are mixtures of nanoparticles and refrigerants. They have several potential applications in various fields, such as for refrigeration and air-conditioning systems and heat pumps, among others. Accordingly,… read more here.
Keywords: energy efficient; nanorefrigerants energy; refrigeration; efficient refrigeration ... See more keywords
On the difficulty of globally optimally controlling refrigeration systems
Sign Up to like & getrecommendations! Published in 2017 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2016.10.007
Abstract: Abstract This paper describes in detail some key aspects of the modelling and the global optimization of vapour compression refrigeration systems, which reveal some intrinsic difficulties in controlling such systems when a steady-state optimal operation… read more here.
Keywords: optimally controlling; global optimization; control; refrigeration systems ... See more keywords
Impact and quantification of various individual thermodynamic improvements for transcritical R744 supermarket refrigeration systems based on advanced exergy analysis
Sign Up to like & getrecommendations! Published in 2021 at "Energy Conversion and Management"
DOI: 10.1016/j.enconman.2020.113684
Abstract: Abstract Climate change mitigation actions have led transcritical R744 refrigeration systems to take center stage in supermarket applications worldwide. Various measures aimed at making these solutions highly performing in any climate context, in fact, have… read more here.
Keywords: transcritical r744; refrigeration systems; advanced exergy; r744 ... See more keywords
Reinforcement Learning Control of Transcritical Carbon Dioxide Supermarket Refrigeration Systems
Sign Up to like & getrecommendations! Published in 2017 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2017.08.2565
Abstract: Abstract Commercial refrigeration systems consume a substantial amount of electrical energy, resulting in high indirect global warming impact due to greenhouse gases emissions. The multitude of different system configurations, system complexity, component wear, and changing… read more here.
Keywords: system; control; reinforcement learning; refrigeration ... See more keywords
A review on expanders and their performance in vapour compression refrigeration systems
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Refrigeration"
DOI: 10.1016/j.ijrefrig.2019.06.019
Abstract: Abstract This paper reviews progress reported in the open literature of the use of expanders to recover expansion power to improve the energy efficiency of vapour compression refrigeration systems. Pioneering works in the field are… read more here.
Keywords: refrigeration; vapour compression; performance; compression refrigeration ... See more keywords
Optimal control analysis and Practical NMPC applied to refrigeration systems.
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DOI: 10.1016/j.isatra.2020.07.041
Abstract: This work is focused on optimal control of mechanical compression refrigeration systems. A reduced-order state-space model based on the moving boundary approach is proposed for the canonical cycle, which eases the controller design. The optimal… read more here.
Keywords: refrigeration systems; practical nmpc; optimal control;
Artificial intelligence techniques in refrigeration system modelling and optimization: A multi-disciplinary review
Sign Up to like & getrecommendations! Published in 2021 at "Sustainable Energy Technologies and Assessments"
DOI: 10.1016/j.seta.2021.101488
Abstract: Abstract Refrigeration systems currently utilize 17% of total electric energy, and this consumption is expected to increase by more than 30% by 2050. Moreover, these systems significantly contribute to global warming (10%) and environmental degradation.… read more here.
Keywords: optimization; refrigeration; intelligence; refrigeration system ... See more keywords
Experimental comparison of R404A and R452A in refrigeration systems
Sign Up to like & getrecommendations! Published in 2020 at "Science and Technology for the Built Environment"
DOI: 10.1080/23744731.2020.1796419
Abstract: In this study, R404A and R452A refrigerants used in refrigeration systems were compared experimentally. The energy performance of the system was investigated for widely used evaporation temperatures (−5, 0, +5 °C) and condenser temperatures (25, 35,… read more here.
Keywords: system; experimental comparison; refrigeration systems; r404a r452a ... See more keywords
Energy and exergy analysis on hydrofluoroolefin/ hydrofluorocarbon (HFO/HFC) refrigerant mixtures in low and medium temperature small-scale refrigeration systems
Sign Up to like & getrecommendations! Published in 2019 at "Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering"
DOI: 10.1177/0954408919881306
Abstract: The new refrigerants such as HFO-1234yf and HFO-1234ze have been considered as long-term replacements for HFC-134a to comply with the Kyoto protocol. In small size refrigeration systems, these refrigerants have poor performance than HFC-134a besides… read more here.
Keywords: hfo; hfc 134a; refrigeration systems; performance ... See more keywords