Cooling domain prediction of HFCs and HCFCs refrigerant with Joule–Thomson coefficient

Han, Kyong Ho; Noh, Su Pin; Hong, In Kwon; Park, Kyung Ai

doi:10.1016/j.jiec.2011.11.073

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…It is believed that the heating effect (temperature rise) created from the rotational process could be cancelled out by the temperature drop resulted from the adiabatic expansion through the vortex tube [17]. As the latter could be related to Joule-Thomson (J-T) effect, the author is to assess whether J-T coefficient [28,29] could be used to help us to understand better the relative ranking of the heating effect.…”

Section: Tab 4 Physical-thermal Properties Of Chosen Refrigerants Atmentioning

confidence: 99%

An investigation into the influences of refrigerants’ thermal-physical properties on temperature separation effect of a vortex tube

2023

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The temperature separation effects of vortex tubes have been widely studied in open systems, using mainly air or N2as the working fluid. When a vortex tube is employed in a closed thermal system, more fluid choices, such as refrigerants, could be considered. Different to air, refrigerants have quite varied thermal-physical properties, and research of the thermal-physical properties? influence on the temperature separation effect is rather limited. Based on CFD simulated temperature separation effect of eight refrigerants (R152a, R290, R134a, R600a, R143a, R245fa, R227ea and R218), this study attempts to gain a better insight into how their properties could be related to compare their temperature separation performance. The analysis shows for small mass flow ratios at the cold end, the cooling effect can be assessed by the relative values of their isentropic expansion exponent. The results also suggest that a large thermal diffusivity and kinematic viscosity, and a small vapour density and Joule-Thomson (J-T) coefficient would lead to better heating effects.

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Section: Tab 4 Physical-thermal Properties Of Chosen Refrigerants Atmentioning

confidence: 99%

An investigation into the influences of refrigerants’ thermal-physical properties on temperature separation effect of a vortex tube

2023

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“…Also, the points in the curve divide the Joule–Thomson cooling region (μ JT > 0) and Joule–Thomson heating region (μ JT < 0). 43 …”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…Also, the points in the curve divide the Joule−Thomson cooling region (μ JT > 0) and Joule−Thomson heating region (μ JT < 0). 43 In this work, three equations of state including classical typical cubic state equation (PR EoS) 44 and multiparametric equations (GERG-2008 45 and AGA8-92DC 46 EoSs) were used to predict the μ JT and JTICs. The detailed information of the three equations of state is given in the Supporting information.…”

Section: T P Hmentioning

confidence: 99%

“…The temperature change caused by the pressure change is called the Joule–Thomson effect, and the μ JT can be calculated according to the following formulas For H = H ( T , P ), Equation or must be zero when we predict the Joule–Thomson inversion curve, and the common form can be obtained as eq The Joule–Thomson inversion curve (JTIC) is connected by the points in the P – T region, where the μ JT is equal to 0. Also, the points in the curve divide the Joule–Thomson cooling region (μ JT > 0) and Joule–Thomson heating region (μ JT < 0) …”

Section: Theoretical Backgroundmentioning

confidence: 99%

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Joule–Thomson Effect on a CCS-Relevant (CO₂ + N₂) System

et al. 2021

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The Joule–Thomson effect is a key chemical thermodynamic property that is encountered in several industrial applications for CO 2 capture and storage (CCS). An apparatus was designed and built for determining the Joule–Thomson effect. The accuracy of the device was verified by comparing the experimental data with the literature on nitrogen and carbon dioxide. New Joule–Thomson coefficient (μ JT ) measurements for three binary mixtures of (CO 2 + N 2 ) with molar compositions x N 2 = (0.05, 0.10, 0.50) were performed in the temperature range between 298.15 and 423.15 K and at pressures up to 14 MPa. Three equations of state (GERG-2008 equation, AGA8-92DC, and the Peng–Robinson) were used to calculate the μ JT compared with the corresponding experimental data. All of the equations studied here except PR have shown good prediction of μ JT for (CO 2 + N 2 ) mixtures. The relative deviations with respect to experimental data for all (CO 2 + N 2 ) mixtures from the GERG-2008 were within the ±2.5% band, and the AGA8-DC92 EoSs were within ±3%. The Joule–Thomson inversion curve (JTIC) has also been modeled by the aforementioned EoSs, and a comparison was made between the calculated JTICs and the available literature data. The GERG-2008 and AGA8-92DC EoSs show good agreement in predicting the JTIC for pure CO 2 and N 2 . The PR equation only matches well with the JTIC for pure N 2 , while it gives a poor prediction for pure CO 2 . For the (CO 2 + N 2 ) mixtures, the three equations all give similar results throughout the full span of JTICs. The temperature and pressure of the transportation and compression conditions in CCS are far lower than the corresponding predicted P inv,max and T inv,max for (CO 2 + N 2 ) mixtures.

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Analytical evaluation of zero-pressure Joule–Thomson coefficient using second virial coefficient and its application

Мамедов

Somuncu

2016

J Math Chem

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Cooling domain prediction of HFCs and HCFCs refrigerant with Joule–Thomson coefficient

Cited by 6 publications

References 18 publications

An investigation into the influences of refrigerants’ thermal-physical properties on temperature separation effect of a vortex tube

An investigation into the influences of refrigerants’ thermal-physical properties on temperature separation effect of a vortex tube

Joule–Thomson Effect on a CCS-Relevant (CO₂ + N₂) System

Analytical evaluation of zero-pressure Joule–Thomson coefficient using second virial coefficient and its application

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Cooling domain prediction of HFCs and HCFCs refrigerant with Joule–Thomson coefficient

Cited by 6 publications

References 18 publications

An investigation into the influences of refrigerants’ thermal-physical properties on temperature separation effect of a vortex tube

An investigation into the influences of refrigerants’ thermal-physical properties on temperature separation effect of a vortex tube

Joule–Thomson Effect on a CCS-Relevant (CO2 + N2) System

Analytical evaluation of zero-pressure Joule–Thomson coefficient using second virial coefficient and its application

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Joule–Thomson Effect on a CCS-Relevant (CO₂ + N₂) System