Review and future trends of supercritical CO2 Rankine cycle for low-grade heat conversion

Sarkar, Jahar

doi:10.1016/j.rser.2015.04.039

Cited by 207 publications

(50 citation statements)

References 101 publications

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“…CTRC is a suitable technology used for E-WHR due to well environmental performance, small system size and stable chemical property in direct heat transfer with exhaust gas [9,10]. Compared waste heat of the engine coolant is used for preheating the liquid region of evaporation process.…”

Section: Introductionmentioning

confidence: 99%

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Ideal Point Design and Operation of CO2-Based Transcritical Rankine Cycle (CTRC) System Based on High Utilization of Engine’s Waste Heats

et al. 2017

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This research conducted a study specially to systematically analyze combined recovery of exhaust gas and engine coolant and related influence mechanism, including a detailed theoretical study and an assistant experimental study. In this research, CO 2 -based transcritical Rankine cycle (CTRC) was used for fully combining the wastes heats. The main objective of theoretical research was to search an 'ideal point' of the recovery system and related influence mechanism, which was defined as operating condition of complete recovery of two waste heats. The theoretical methodology of this study could also provide a design reference for effective combined recovery of two or multiple waste heats in other fields. Based on a kW-class preheated CTRC prototype that was designed by the 'ideal point' method, an experimental study was conducted to verify combined utilization degree of two engine waste heats by the CTRC system. The operating results showed that the prototype can gain 44.4-49.8 kW and 22.7-26.7 kW heat absorption from exhaust gas and engine coolant, respectively. To direct practical operation, an experimental optimization work on the operating process was conducted for complete recovery of engine coolant exactly, which avoided deficient or excessive recovery.

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Section: Introductionmentioning

confidence: 99%

“…Energies 2017, 10,1692 19 of 21 range of exhaust gas and increases the t ip . The t ip is 556 • C at P 3 = 10 MPa.…”

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confidence: 99%

Ideal Point Design and Operation of CO2-Based Transcritical Rankine Cycle (CTRC) System Based on High Utilization of Engine’s Waste Heats

et al. 2017

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“…The collected heat is used in the next cycle to run a Ranking cycle turbine (either by steam or CO 2 ). Nowadays, researchers are also working with CO 2 in the Rankine cycle . The heat energy can be recovered from the condenser of the turbine power system, and this system can also work as combined cooling, heating, and power (CCHP).…”

Section: Solar Thermal Heating and Coolingmentioning

confidence: 99%

“…Nowadays, researchers are also working with CO 2 in the Rankine cycle. [188][189][190] The heat energy can be recovered from the condenser of the turbine power system, and this system can also work as combined cooling, heating, and power (CCHP).…”

Section: Solar Thermal Rankine Cycle Using Co 2 (Heating Cooling mentioning

confidence: 99%

Review of carbon dioxide (CO ₂ ) based heating and cooling technologies: Past, present, and future outlook

2019

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Summary Refrigerants bearing high global warming potential (GWP) and ozone depletion potential (ODP) were outlawed or facing time‐beared permission under the Montreal (1987), Kyoto (1997) protocols, F‐Gas law (2015), Paris Accord (2016), and recent Kigali Amendment to Montreal Protocol (2019). In order to modify followed by the paradigm shift of existing heating and cooling systems, American Society of Heating, Refrigeration, and Air‐Conditioning Engineers (ASHRAE) envisaged natural and synthetic refrigerants (Synrefs) are under investigation globally. Carbon dioxide (CO2) is a popular natural refrigerant (Natref) replacing Synrefs used in commercial heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems globally. A rampant rise is observed in markets of Asia (Japan and China), North America (the United States and Canada), the Australian continent, and Africa (South Africa) by reaching 20 000 CO2‐stores around the globe. The European markets are leading the utilization of CO2 in the heat pump, and refrigeration, CO2 based markets estimate 14% of the total food retail stores (400 m2). Japan is the second leading market of CO2 heat pump and refrigeration with more than 10 200 CO2 condensing units. CO2 transcritical systems have a share of more than 10% in only European market (large stores); however, their share is less than 10% of total stores in other major markets of the world. New pump and compressor‐driven transcritical CO2 systems integrate ejectors, condensers, and booster systems to reduce energy consumptions, enhance efficiency, efficacy, and coefficient of performance. This article reports a critical review of the CO2 based heating, cooling, and refrigeration system and presents updated literature along with barriers and challenges on commercial use of Natref‐based heating and cooling applications worldwide.

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“…The economic analysis determined the competitiveness of the project based on levelized cost of electric power (LCOE) parameter (Walraven et al 2015). The geopressured reservoir located in Vermilion Parish, Louisiana, US was taken as a reservoir prototype (Gray 2010) and CO 2 was chosen as a working fluid for the power cycle (Sarkar 2015). Reservoir temperature of 126 °C was used in the calculations.…”

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confidence: 99%

Numerical analysis of downhole heat exchanger designed for geothermal energy production

Akhmadullin

Tyagi

2017

Geotherm Energy

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Review and future trends of supercritical CO2 Rankine cycle for low-grade heat conversion

Cited by 207 publications

References 101 publications

Ideal Point Design and Operation of CO2-Based Transcritical Rankine Cycle (CTRC) System Based on High Utilization of Engine’s Waste Heats

Ideal Point Design and Operation of CO2-Based Transcritical Rankine Cycle (CTRC) System Based on High Utilization of Engine’s Waste Heats

Review of carbon dioxide (CO ₂ ) based heating and cooling technologies: Past, present, and future outlook

Numerical analysis of downhole heat exchanger designed for geothermal energy production

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Review and future trends of supercritical CO2 Rankine cycle for low-grade heat conversion

Cited by 207 publications

References 101 publications

Ideal Point Design and Operation of CO2-Based Transcritical Rankine Cycle (CTRC) System Based on High Utilization of Engine’s Waste Heats

Ideal Point Design and Operation of CO2-Based Transcritical Rankine Cycle (CTRC) System Based on High Utilization of Engine’s Waste Heats

Review of carbon dioxide (CO 2 ) based heating and cooling technologies: Past, present, and future outlook

Numerical analysis of downhole heat exchanger designed for geothermal energy production

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Review of carbon dioxide (CO ₂ ) based heating and cooling technologies: Past, present, and future outlook