Thermal stability and decomposition behavior of HFO-1234ze(E) as a working fluid in the supercritical organic Rankine cycle

Irriyanto, Miqdar Zulfikar; Lim, Hyung-Taek; Choi, Bum-Seog; Myint, Aye Aye; Kim, Jae-Hoon

doi:10.1016/j.supflu.2019.104602

Cited by 26 publications

(7 citation statements)

References 56 publications

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“…The energy barriers for the decomposition of the following 4 paths on the surface of Cu(1 1 1) are calculated. Paths 1-4 are the main initial reaction paths of HFO-1234yf [13,14]. Path 1 HFO-1234yf→CF=CH2 + CF3 Path 2 HFO-1234yf→CF3CF=CH + H Path 3 HFO-1234yf→CF3C=CH2 + F Path 4 HFO-1234yf→CF2CF=CH2 + F…”

Section: Resultsmentioning

confidence: 99%

Catalytic mechanism of Cu (111) surface on the pyrolysis of HFO-1234yf: A density functional study

Liyong¹,

Xin²,

Liu*³

et al. 2022

Preprint

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Section: Resultsmentioning

confidence: 99%

Catalytic mechanism of Cu (111) surface on the pyrolysis of HFO-1234yf: A density functional study

Liyong¹,

Xin²,

Liu*³

et al. 2022

Preprint

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“…Specifically, they found that the pyrolysis products included coke, macromolecular products, the isomer of HFO-1336mzz (Z), and HF. In addition, the temperature of HFO-1234ze (E) for its safe use was also investigated by Irriyanto et al, 41 and the results showed that HFO-1234ze(E) could be maintained as thermally stable up to 180 C at 5 MPa.…”

Section: F-containing Working Fluidsmentioning

confidence: 99%

Thermal stability and pyrolysis mechanism of working fluids for organic Rankine cycle: A review

Huo

Xin

Wang

2022

Intl J of Energy Research

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Summary Organic Rankine cycle (ORC) is an effective method used to convert renewable energy and waste heat into electricity. The screening of working fluids is crucial to the design of the ORCs, and their thermal stability is a key factor for the selection of ORC working fluids. This review emphasized the thermal stability studies of ORC working fluids. We reviewed the research methods and thermal stability results of hydrocarbon, fluorine‐containing, and siloxane working fluids and analyzed the effects of working fluid pyrolysis on the performance and safety of ORCs. Compared with the previous articles, which only introduced the thermal stability studies of working fluids, this review also focused on the research methods and the status quo of the working fluid pyrolysis mechanism. The feasibility of the density functional theory method and the ReaxFF force field for the study of working fluid pyrolysis mechanism was demonstrated. Finally, the disadvantages of working fluid thermal stability and pyrolysis mechanism studies were analyzed, and the prospects in this field were also discussed.

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“…Nonetheless, in horizontal flow configurations, supercritical fluids are susceptible to encountering heat transfer deterioration, resulting in local increases in wall temperature and potential thermal decomposition of the organic fluid. This poses challenges to the safety [6] and stability of the supercritical system [7,8]. Consequently, enhancing convective heat transfer in horizontal tubes under supercritical conditions becomes a critical approach to improving the heat exchange capacity of the heat exchanger and optimizing the overall efficiency of T-ORC systems.…”

Section: Introductionmentioning

confidence: 99%

Effect of Rotational Angle of Discrete Inclined Ribs on Horizontal Flow and Heat Transfer of Supercritical R134a

Yang,

Tang,

2024

Energies

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This work numerically studied the heat transfer and flow characteristics of supercritical R134a in horizontal pipes equipped with DDIR, considering variations in the rotation angle of DDIR. The aim is to improve the effects of the DDIR configuration on the heat transfer of supercritical flow. After validation with experimental data, the AKN model was employed to examine the effects of four sets of rotation angles (0°, 30°, 45°, and 60°) on the axial and circumferential heat transfer characteristics of DDIR horizontal tubes under the influence of strong (q1/G1 = 0.1 kJ/kg) and medium (q2/G2 = 0.056 kJ/kg) buoyancy. Results show that variations in the rotation angle do not induce significant alterations in the flow field, thus exerting minimal influence on the axial heat transfer characteristics. Meanwhile, the rotation angle determines the relative positioning of the circumferential inner wall temperatures and heat flux distribution, although the magnitude of this effect remains inconspicuous. The rotational angle parameter can be reasonably neglected in the future design and installation of heat exchangers.

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Thermal stability and decomposition behavior of HFO-1234ze(E) as a working fluid in the supercritical organic Rankine cycle

Cited by 26 publications

References 56 publications

Catalytic mechanism of Cu (111) surface on the pyrolysis of HFO-1234yf: A density functional study

Catalytic mechanism of Cu (111) surface on the pyrolysis of HFO-1234yf: A density functional study

Thermal stability and pyrolysis mechanism of working fluids for organic Rankine cycle: A review

Effect of Rotational Angle of Discrete Inclined Ribs on Horizontal Flow and Heat Transfer of Supercritical R134a

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