mirror of
https://github.com/CoolProp/CoolProp.git
synced 2026-04-01 03:00:13 -04:00
Ian bell
@@ -292,5 +292,118 @@
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"rhoVtriple_units": "mol/m^3"
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}
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],
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"NAME": "DimethylEther"
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"NAME": "DimethylEther",
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"TRANSPORT": {
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"BibTeX": "Meng-JCED-2012",
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"epsilon_over_k": 317.937,
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"epsilon_over_k_units": "K",
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"sigma_eta": 4.46704e-10,
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"sigma_eta_units": "m",
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"viscosity": {
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"dilute": {
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"C": 2.1357e-08,
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"a": [
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0.294261,
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-0.377826,
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-0.491673
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],
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"molar_mass": 0.04606844,
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"molar_mass_units": "kg/mol",
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"t": [
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0,
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1,
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2
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],
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"type": "collision_integral"
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},
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"higher_order": {
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"T_reduce": 400.378,
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"T_reduce_units": "K",
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"a": [
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-2.70002e-06,
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4.44583e-06,
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2.1302e-07,
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6.50681e-06,
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-0.000104998,
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7.827474e-05,
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4.13751e-05,
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-0.000175055,
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6.281975e-05,
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0.0001123219
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],
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"d1": [
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3,
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3,
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5,
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1,
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3,
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4,
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5,
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2,
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2,
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2
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],
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"d2": [
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1
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],
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"f": [
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0
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],
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"g": [
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1
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],
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"gamma": [
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0,
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0,
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0,
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0,
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-1,
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-1,
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-1,
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-1,
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-1,
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-1
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],
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"h": [
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0
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],
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"l": [
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0,
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0,
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0,
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0,
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1,
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1,
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2,
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1,
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1,
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2
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],
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"p": [
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1
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],
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"q": [
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0
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],
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"rhomolar_reduce": 5940,
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"rhomolar_reduce_units": "mol/m^3",
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"t1": [
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5.92,
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4.36,
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5.87,
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0.45,
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2.93,
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1.64,
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7.86,
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4.25,
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4.79,
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3.11
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],
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"t2": [
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0
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],
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"type": "modified_Batschinski_Hildebrand"
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}
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}
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}
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}
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@@ -15,13 +15,11 @@ Fluid & Reference & $\eta^0$ & $\eta^r$ \\
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\hline
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Ammonia & (data) Fenghour 1995 & $\eta^0 = \dfrac{0.021357\sqrt{MT}}{\sigma^2\Game(T^*)}$\newline$\mathfrak{S}(T^*)=\exp\left(\sum_{i=0}^{4}a_i[\ln T^*]^i\right)$ & $\eta^r = B_{BV}\rho\eta^0(T) + \Delta\eta$\newline$\Delta\eta = \sum_i b_i(T)\rho^i$\\\hline
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Dimethyl Ether & Meng 2012 & $\eta^0 = \dfrac{0.021357\sqrt{MT}}{\sigma^2\mathfrak{S}(T^*)}$\newline$\mathfrak{S}(T^*)=\exp\left(\sum_{i=0}^{4}a_i[\ln T^*]^i\right)$ & $\eta^r = \Delta\eta$\newline$\Delta\eta = \sum_{i=0}^{1}n_i\tau^{t_i}\delta^{d_i} + \sum_{i=2}^{6}n_i\tau^{t_i}\delta^{d_i}\exp(-\delta^{p_i})$\\\hline
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Ethanol & Kiselev 2005 & $\eta^0 = \sum_i a_i T^{n_i}$ & $\eta^r = B_{RF}\rho\eta^0(T)+\Delta \eta$ \newline $\Delta\eta = \displaystyle\sum_{i=2}^n\displaystyle\sum_{j=0}^me_{ij}\frac{\delta^i}{\tau_j}+f_1\left(\frac{\delta}{\delta_0(\tau)-\delta}-\frac{\delta}{\delta_0(\tau)}\right)$ \newline $\delta_0(\tau)=g_2+g_3\sqrt{\tau}$\\\hline
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R404A, R410A, R507, R407 & Geller 2000 & $\eta^0 = \sum_i A_iT^i$&$\eta^r = \sum_j b_j\rho^j$ \\\hline
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R134a & Huber 2003 & $\eta^0 = \dfrac{0.021357\sqrt{MT}}{\sigma^2\mathfrak{S}(T^*)}$\newline$\mathfrak{S}(T^*)=\exp\left(\sum_{i=0}^{4}a_i[\ln T^*]^i\right)$ & $\eta^r = \eta^0(T)\rho B_{RF} + \Delta\eta$\newline$\Delta\eta = c_1\delta+\left(\frac{c_2}{\tau^6}+\frac{c_3}{\tau^2}+\frac{c_4}{\sqrt{\tau}}+c_5\tau^2\right)\delta^2+c_6\delta^3+c_7\left(\frac{1}{\delta_0-\delta}-\frac{1}{\delta_0}\right)$ \newline $\delta_0(\tau)=\frac{c_{10}}{1+c_8\tau+c_9\tau^2}$\\\hline
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\hline\hline
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Ethane & Friend 1991 & $\eta^0 = \dfrac{12.0085\sqrt{t}}{\Omega^{(2,2)*}(t)}$ \newline $\Omega^{(2,2)*}(t) = \left[\sum_i C_it^{(i-1)/3-1} \right]^{-1}$& $\Delta\eta = 15.977\left[\displaystyle\sum_i g_i\delta^{r_i}\tau^{s_i}\right]\left[1+\displaystyle\sum_{i=10}^{11}g_i\delta^{r_i}\tau^{s_i}\right]^{-1}$\\\hline
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@@ -45,6 +43,8 @@ n-Dodecane & (data) Huber 2004 & $\eta^0 = \dfrac{0.021357\sqrt{MT}}{\sigma^2\ma
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R125 & (data) Huber 2006 & $\eta^0 = \dfrac{5}{16}\sqrt{\dfrac{MkT}{\pi N}}\dfrac{1}{\sigma^2\Omega^*(T^*)}$\newline $\Omega(T^*)$ from Neufeld & $\eta^r = \eta^0(T)\rho B_{RF} + \Delta\eta$\newline$\Delta\eta = \displaystyle\sum_{i=2}^n\displaystyle\sum_{j=0}^me_{ij}\frac{\delta^i}{\tau_j}+c_1\left(\frac{\delta}{\delta_0-\delta}-\frac{\delta}{\delta_0(\tau)}\right)$ \newline $\delta_0(\tau)=c_2 +c_3\sqrt{\tau}$\\\hline
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Carbon Dioxide & (data) Fenghour 1998 & $\eta^0 = \dfrac{1.00697\sqrt{T}}{\sigma^2\mathfrak{S}(T^*)}$ \newline $\mathfrak{S}(T^*)=\exp\left(\sum_{i=0}^{4}a_i[\ln T^*]^i\right)$ & $\Delta\eta = d_{11}\rho + d_{21}\rho^2+\frac{d_{64}\rho^6}{(T^*)^3}+d_{81}\rho^8+\frac{d_{82}\rho^8}{T^*}$ \newline $\Delta\eta = d_{11}\rho_c\delta + d_{21}\rho_c^2\delta^2+\frac{d_{64}\rho_c^6(\varepsilon/k)^3\delta^6\tau^3}{(T_c)^3}+\rho_c^8d_{81}\delta^8+\frac{\rho_c^8d_{82}\delta^8(\varepsilon/k)\tau}{T_c}$\\\hline
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Nitrogen, argon, oxygen air & (data) Lemmon and Jacobsen 2004 & $\eta^0 = \dfrac{0.0266958\sqrt{MT}}{\sigma^2\Omega(T^*)}$\newline$\Omega(T^*)=\exp\left(\sum_{i=0}^{4}b_i[\ln T^*]^i\right)$ & $\eta^r = \sum_{i=1}^NN_i\tau^{\tau_i}\delta^{d_i}\exp(-\gamma_i\delta^{l_i})$\\\hline
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R134a & Huber 2003 & $\eta^0 = \dfrac{0.021357\sqrt{MT}}{\sigma^2\mathfrak{S}(T^*)}$\newline$\mathfrak{S}(T^*)=\exp\left(\sum_{i=0}^{4}a_i[\ln T^*]^i\right)$ & $\eta^r = \eta^0(T)\rho B_{RF} + \Delta\eta$\newline$\Delta\eta = c_1\delta+\left(\frac{c_2}{\tau^6}+\frac{c_3}{\tau^2}+\frac{c_4}{\sqrt{\tau}}+c_5\tau^2\right)\delta^2+c_6\delta^3+c_7\left(\frac{1}{\delta_0-\delta}-\frac{1}{\delta_0}\right)$ \newline $\delta_0(\tau)=\frac{c_{10}}{1+c_8\tau+c_9\tau^2}$\\\hline
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Dimethyl Ether & Meng 2012 & $\eta^0 = \dfrac{0.021357\sqrt{MT}}{\sigma^2\mathfrak{S}(T^*)}$\newline$\mathfrak{S}(T^*)=\exp\left(\sum_{i=0}^{4}a_i[\ln T^*]^i\right)$ & $\eta^r = \Delta\eta$\newline$\Delta\eta = \sum_{i=0}^{1}n_i\tau^{t_i}\delta^{d_i} + \sum_{i=2}^{6}n_i\tau^{t_i}\delta^{d_i}\exp(-\delta^{p_i})$\\\hline
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\hline\hline
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\end{tabular}
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@@ -52,6 +52,10 @@ vel("R134a", "T", 185, "Q", 1, "V", 7.4290821400170869e-006, 1e-3),
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vel("R134a", "T", 360, "Q", 0, "V", 7.8146319978982133e-005, 1e-3),
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vel("R134a", "T", 360, "Q", 1, "V", 1.7140264998576107e-005, 1e-3),
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// From Meng 2012 experimental data (note erratum in BibTeX file)
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vel("DimethylEther", "T", 253.146, "Dmass", 734.28, "V", 0.20444e-3, 3e-3),
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vel("DimethylEther", "T", 373.132, "Dmass", 613.78, "V", 0.09991e-3, 3e-3),
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//// From Fenghour, JPCRD, 1995
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//vel("Ammonia", "T", 200, "Dmolar", 3.9, "V", 6.95e-6, 1e-3),
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//vel("Ammonia", "T", 200, "Dmolar", 42754.4, "V", 507.28e-6, 1e-3),
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