Modelling of a new thermal compressor for supercritical CO 2 heat pump

Ibsaine, Rabah; Joffroy, Jean-Marc; Stouffs, Pascal

doi:10.1016/j.energy.2016.07.017

Cited by 17 publications

(8 citation statements)

References 8 publications

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“…The uniqueness of the system is that the same working fluid can be used in both the thermal engine and the HP to enhance thermal efficiency. To analyze the thermal performance of the compressor, Ibsaine et al [84] formulated a mathematical model and recommended that a two-stage thermal compressor is preferred in CO 2 HP applications.…”

Section: Compressormentioning

confidence: 99%

Recent Advances in Transcritical CO2 (R744) Heat Pump System: A Review

et al. 2019

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Heat pump (HP) is one of the most energy efficient tools for address heating and possibly cooling needs in buildings. Growing environmental concerns over conventional HP refrigerants, chlorofluorocarbons (CFCs), and hydrofluorocarbons (HFCs) have forced legislators and researchers to look for alternatives. As such, carbon dioxide (R744/CO2) has come to light due to its low global warming potential (GWP) and zero ozone depleting characteristics. Even though CO2 is environmentally benign, the performance of CO2 HP has been of concern since its inception. To improve the performance of CO2 HP, research has been playing a pivotal role in developing functional designs of heat exchangers, expansion devices, and compressors to suit the CO2 transcritical cycle. Different CO2 HP cycles coupled with auxiliary components, hybrid systems, and refrigerant mixtures along with advanced control strategies have been applied and tested. This paper presents a complete overview of the most recent developments of transcritical CO2 HPs, their components, and applications.

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Section: Compressormentioning

confidence: 99%

Recent Advances in Transcritical CO2 (R744) Heat Pump System: A Review

et al. 2019

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“…However, it was found that the increase of compressor outlet pressure never affects the thermal efficiency. Ibsaine [22] presented a new compressor design concept, which was especially suited for sCO2 heat pump applications. The compressor consists of an integrated thermal system that consists of a thermal compressor and a conventional vapor compression heat pump.…”

Section: Supercritical Co2 Compressor and Turbinementioning

confidence: 99%

A review of supercritical CO2 Brayton cycle using in renewable energy applications

Chu

Bennett

Cheng

et al. 2018

Ren. Ener. & Sust. Dev.

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Supercritical carbon dioxide (sCO2), which is an environmentally friendly working fluid, has very good thermal physical properties. Many researchers have studied the heat transfer mechanism and the enhanced heat transfer method of the supercritical CO2 Brayton cycle (sCO2-BC). The sCO2-BC has many applications including the next generation of Fast Cooling Reactor (FCR), solar power system, extraction process and heat pump system. The sCO2-BC provides high efficiency and high compactness, which is important because system miniaturization is vital to these developing technologies. The present paper reviews the recent references on the research progress of the sCO2-BC system. Furthermore, it discusses the analysis of key components such as the compressor, turbine and heat exchanger, which differ from the devices used in the conventional steam Rankine cycle due to the special thermal properties of sCO2. Finally, the researchers propose some recommendations towards the development of sCO2-BC system for future work.

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“…3 There are other thermal-mechanical techniques such as those driven by Stirling-engine 4 or by thermal compressor. 5,6 In addition, some systems operate based on a hybridization concept (combination of two different techniques). Each of these techniques has its features and limitations.…”

Section: Introductionmentioning

confidence: 99%

“…The thermal‐mechanical systems primarily include the ejector systems, the organic Rankine cycle (ORC) systems and the newly introduced thermal mechanical compressor systems 3 . There are other thermal‐mechanical techniques such as those driven by Stirling‐engine 4 or by thermal compressor 5,6 . In addition, some systems operate based on a hybridization concept (combination of two different techniques).…”

Section: Introductionmentioning

confidence: 99%

Review of innovative approaches of thermo‐mechanical refrigeration systems using low grade heat

2020

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Cooling and refrigeration systems consume around 17% of the worldwide electricity. Enhancing the performance of these systems, using renewable energy resources and waste heat recovered from industrial processes, will lead to reduced fossil fuel consumption. Improvements of these systems using ecofriendly working fluids are of equal importance. Both options contribute to the minimization of the emissions of greenhouse gases and ozone depletion substances. In this paper, a detailed and comprehensive review of the innovative and improvement approaches of the thermo-mechanical refrigeration (TMR)

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Modelling of a new thermal compressor for supercritical CO 2 heat pump

Cited by 17 publications

References 8 publications

Recent Advances in Transcritical CO2 (R744) Heat Pump System: A Review

Recent Advances in Transcritical CO2 (R744) Heat Pump System: A Review

A review of supercritical CO2 Brayton cycle using in renewable energy applications

Review of innovative approaches of thermo‐mechanical refrigeration systems using low grade heat

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