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507 lines
12 KiB
JSON
507 lines
12 KiB
JSON
{
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"ALIASES": [
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"helium",
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"HELIUM",
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"He"
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],
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"ANCILLARIES": {
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"hL": {
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"A": [
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-431.38320408055574,
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638.5830895390288,
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-489.7782289369555,
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215.11564551032293,
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-56.455544148624895,
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8.839500777665124,
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-0.7643756414392752,
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0.02809650240174938
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],
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"B": [
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1,
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-0.18438981201451518
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],
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"_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy",
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"max_abs_error": 0.022150387883478118,
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"max_abs_error_units": "J/mol",
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"type": "rational_polynomial"
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},
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"hLV": {
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"A": [
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371.5289910589138,
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-571.9456578146065,
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451.6088530510513,
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-197.92198583824626,
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51.0815547508716,
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-7.8258724969299225,
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0.6593021950668424,
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-0.023424947592386735
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],
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"B": [
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1,
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-0.186370437531018
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],
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"_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy",
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"max_abs_error": 0.03436822003364881,
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"max_abs_error_units": "J/mol",
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"type": "rational_polynomial"
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},
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"melting_line": {
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"BibTeX": "Datchi-PRB-2000",
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"T_m": 1.15,
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"parts": [
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{
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"T_0": 1,
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"T_max": 700,
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"T_min": 2.1768,
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"a": 1606700.0,
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"c": 1.565,
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"p_0": -1606700.0
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}
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],
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"type": "Simon"
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},
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"pL": {
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"T_r": 5.1953,
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"Tmax": 5.195299999999987,
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"Tmin": 2.1768000000000103,
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"description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))",
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"max_abserror_percentage": 0.009046990251626585,
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"n": [
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-2.5589967099484343,
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-2.1208869241528903,
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2.0304814035943877,
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0.9702906562630098,
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-0.006217789170073319,
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-4.338734244510393
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],
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"reducing_value": 227600.0,
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"t": [
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0.981,
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1.13,
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1.536,
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3.109,
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0.338,
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14.431
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],
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"type": "pL",
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"using_tau_r": true
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},
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"pV": {
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"T_r": 5.1953,
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"Tmax": 5.195299999999987,
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"Tmin": 2.1768000000000103,
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"description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))",
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"max_abserror_percentage": 0.009844391348079462,
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"n": [
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2.1680719893011937,
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-5.75952731195631,
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1.295833335273841,
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0.42681936101289836,
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0.49626229940990035,
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-11.083693322102567
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],
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"reducing_value": 227600.0,
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"t": [
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0.896,
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0.945,
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2.116,
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2.72,
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6.555,
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14.771
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],
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"type": "pV",
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"using_tau_r": true
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},
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"rhoL": {
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"T_r": 5.1953,
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"Tmax": 5.195299999999987,
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"Tmin": 2.1768000000000103,
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"description": "rho' = rhoc*(1+sum(n_i*theta^t_i))",
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"max_abserror_percentage": 0.01468301830127583,
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"n": [
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1.8225767219916278,
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-0.5212838519553242,
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0.2130685389843537,
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-0.44861224586106435,
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5.329845315529739,
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-10.020970811883176
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],
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"reducing_value": 18130.0,
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"t": [
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0.402,
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0.491,
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0.941,
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1.784,
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8.213,
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9.042
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],
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"type": "rhoLnoexp",
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"using_tau_r": false
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},
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"rhoV": {
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"T_r": 5.1953,
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"Tmax": 5.195299999999987,
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"Tmin": 2.1768000000000103,
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"description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))",
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"max_abserror_percentage": 0.0694378509351723,
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"n": [
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-0.8412289332631507,
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-3.590072534944493,
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2.2788760536554777,
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-1.4459129841887175,
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2.0638632716793297,
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-14.547720153618606
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],
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"reducing_value": 18130.0,
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"t": [
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0.211,
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0.693,
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0.749,
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1.118,
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1.846,
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19.915
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],
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"type": "rhoV",
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"using_tau_r": true
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},
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"sL": {
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"A": [
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-205.83355711479925,
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349.2990053067296,
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-275.68259549746017,
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122.56872955362479,
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-32.63350575596284,
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5.1905810489487925,
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-0.456408277860071,
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0.01710499562467409
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],
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"B": [
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1,
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-0.17644509500055094
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],
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"_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy",
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"max_abs_error": 0.009621826373439113,
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"max_abs_error_units": "J/mol/K",
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"type": "rational_polynomial"
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},
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"sLV": {
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"A": [
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339.49787735366624,
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-514.5161442734804,
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380.77980301777467,
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-163.118964862231,
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42.360852162655526,
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-6.612392146177472,
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0.572543686217766,
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-0.021164101060777908
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],
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"B": [
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1,
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-0.18207432736961326
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],
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"_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy",
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"max_abs_error": 0.014376220853541177,
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"max_abs_error_units": "J/mol/K",
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"type": "rational_polynomial"
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},
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"surface_tension": {
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"BibTeX": "Mulero-JPCRD-2012",
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"Tc": 5.1953,
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"a": [
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0.0004656,
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0.001889,
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-0.002006
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],
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"description": "sigma = sum(a_i*(1-T/Tc)^n_i)",
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"n": [
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1.04,
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2.468,
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2.661
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]
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}
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},
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"CAS": "7440-59-7",
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"ENVIRONMENTAL": {
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"ASHRAE34": "A1",
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"FH": 0,
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"GWP100": -1.0,
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"GWP20": -1.0,
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"GWP500": -1.0,
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"HH": 0,
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"Name": "Helium",
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"ODP": -1.0,
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"PH": 0
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},
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"EOS": [
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{
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"BibTeX_CP0": "",
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"BibTeX_EOS": "OrtizVega-2010",
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"STATES": {
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"hs_anchor": {
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"T": 5.71483,
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"T_units": "K",
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"hmolar": 65.53595731402356,
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"hmolar_units": "J/mol",
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"p": 312462.04944191116,
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"p_units": "Pa",
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"rhomolar": 15645.330000000002,
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"rhomolar_units": "mol/m^3",
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"smolar": 11.065445790671316,
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"smolar_units": "J/mol/K"
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},
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"reducing": {
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"T": 5.1953,
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"T_units": "K",
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"p": 227600,
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"p_units": "Pa",
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"rhomolar": 17383.7,
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"rhomolar_units": "mol/m^3"
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},
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"sat_min_liquid": {
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"T": 2.1768,
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"T_units": "K",
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"p": 5033.548896638174,
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"p_units": "Pa",
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"rhomolar": 36477.064583106585,
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"rhomolar_units": "mol/m^3"
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},
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"sat_min_vapor": {
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"T": 2.1768,
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"T_units": "K",
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"p": 5033.548896641127,
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"p_units": "Pa",
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"rhomolar": 293.4422131886783,
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"rhomolar_units": "mol/m^3"
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}
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},
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"T_max": 2000,
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"T_max_units": "K",
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"Ttriple": 2.1768,
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"Ttriple_units": "K",
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"accentric": -0.385,
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"accentric_units": "-",
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"alpha0": [
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{
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"a1": 0.1871304489697973,
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"a2": 0.4848903984696551,
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"type": "IdealGasHelmholtzLead"
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},
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{
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"a": 1.5,
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"type": "IdealGasHelmholtzLogTau"
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},
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{
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"a1": -0.0278608575394308,
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"a2": -0.00835828466224539,
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"reference": "NBP",
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"type": "IdealGasHelmholtzEnthalpyEntropyOffset"
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}
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],
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"alphar": [
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{
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"d": [
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4,
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1,
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1,
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2,
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2,
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3,
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1,
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1,
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3,
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2,
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2,
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1
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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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0,
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0,
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1,
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2,
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2,
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1,
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2,
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1
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],
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"n": [
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0.014799269,
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3.06281562,
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-4.25338698,
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0.05192797,
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0.087236897,
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2.10653786,
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-0.6283503,
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1.04234019,
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-0.07620555,
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-1.35006365
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],
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"t": [
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1.0,
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0.426,
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0.631,
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0.596,
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1.705,
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0.568,
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0.9524,
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1.471,
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1.48,
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1.393,
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3.863,
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0.803
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],
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"type": "ResidualHelmholtzPower"
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},
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{
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"beta": [
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8.005,
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1.15,
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2.143,
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0.147,
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0.154,
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0.701,
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0.21,
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0.134,
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19.256
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],
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"d": [
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1,
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1,
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1,
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2,
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2,
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2,
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3,
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2,
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2
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],
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"epsilon": [
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0.912,
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0.79,
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0.90567,
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5.1136,
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3.6022,
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0.6488,
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4.2753,
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2.744,
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0.8736
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],
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"eta": [
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8.674,
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4.006,
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8.1099,
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0.1449,
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0.1784,
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2.432,
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0.0414,
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0.421,
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5.8575
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],
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"gamma": [
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1.1475,
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1.7036,
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1.6795,
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0.9512,
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4.475,
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2.7284,
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1.7167,
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1.5237,
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0.7649
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],
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"n": [
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0.11997252,
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0.107245,
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-0.35374839,
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0.75348862,
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0.00701871,
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0.226283167,
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-0.22464733,
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0.12413584,
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0.00901399
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],
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"t": [
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3.273,
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0.66,
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2.629,
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1.4379,
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3.317,
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2.3676,
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0.7545,
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1.353,
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1.982
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],
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"type": "ResidualHelmholtzGaussian"
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}
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],
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"critical_region_splines": {
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"T_max": 5.1953000000000005,
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"T_min": 5.19073171770731,
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"_note": "Coefficients for the critical cubic spline. T = c[0]*rho^3 + c[1]*rho^2 + c[2]*rho + c[3] with rho in mol/m^3 and T in K",
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"cL": [
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-3.0333435224167437e-13,
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1.5607506016709e-08,
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-0.00026681298442982895,
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6.710133323667334
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],
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"cV": [
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0.0,
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-4.479989405503328e-10,
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1.624444158435496e-05,
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5.048044137037824
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],
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"rhomolar_max": 19915.76431162559,
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"rhomolar_min": 14936.712852945791
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},
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"gas_constant": 8.314472,
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"gas_constant_units": "J/mol/K",
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"molar_mass": 0.004002602,
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"molar_mass_units": "kg/mol",
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"p_max": 1000000000,
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"p_max_units": "Pa",
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"pseudo_pure": false
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}
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],
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"NAME": "Helium",
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"REFPROP_NAME": "HELIUM",
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"STATES": {
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"critical": {
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"T": 5.1953,
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"T_units": "K",
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"p": 227600.0,
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"p_units": "Pa",
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"rhomolar": 18130.0,
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"rhomolar_units": "mol/m^3"
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},
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"triple_liquid": {
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"T": 2.1768,
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"T_units": "K",
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"p": 5033.548896638174,
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"p_units": "Pa",
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"rhomolar": 36477.064583106585,
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"rhomolar_units": "mol/m^3"
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},
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"triple_vapor": {
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"T": 2.1768,
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"T_units": "K",
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"p": 5033.548896641127,
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"p_units": "Pa",
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"rhomolar": 293.4422131886783,
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"rhomolar_units": "mol/m^3"
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}
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},
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"TRANSPORT": {
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"conductivity": {
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"BibTeX": "HANDS-CRYO-1981",
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"hardcoded": "Helium"
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},
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"viscosity": {
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"BibTeX": "ARP-NIST-1998",
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"hardcoded": "Helium"
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}
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}
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} |