[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-563334-105":53,"doc-detail-563334-en":127},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":120,"head_meta":122,"extra_data":124,"updated_unix":126},105,"en","freon-410a-thermodynamic-properties-si-units","Freon™ 410A - Thermodynamic Properties (SI Units)","","Freon™ 410A refrigerant thermodynamic property tables are provided in SI units, based on extensive experimental measurements and fitted with equations of state derived from the Martin-Hou model. The document includes procedures for computing vapor enthalpy and entropy, along with additional equations for saturated liquid enthalpy, latent enthalpy, and saturated liquid entropy. It further specifies physical properties, defined constants, unit conversions between SI and English/I-P systems, and correlations for ideal-gas heat capacities, liquid phase properties, and vapor pressure over temperature and pressure ranges.",{"@graph":63,"@context":119},[64,80,102],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":51,"@type":70,"position":76},"https://docshare.wps.com/template/general/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/freon-410a-thermodynamic-properties-si-units/563334/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/freon-410a-thermodynamic-properties-si-units/563334.png","ImageObject",442,249,{"name":88,"@type":89},"Adam","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-31","2026-10-12",true,{"@type":98,"interactionType":99,"userInteractionCount":101},"InteractionCounter",{"@type":100},"ViewAction",10,{"@type":103,"mainEntity":104},"FAQPage",[105,111,115],{"name":106,"@type":107,"acceptedAnswer":108},"What method is used to generate Freon™ 410A thermodynamic data?","Question",{"text":109,"@type":110},"The tables are based on extensive experimental measurements and represented using equations derived from the Martin-Hou equation of state, ensuring consistency across the full temperature, pressure, and density range.","Answer",{"name":112,"@type":107,"acceptedAnswer":113},"How are enthalpy and entropy converted between SI and I/P units?",{"text":114,"@type":110},"The conversion requires changing reference states: SI reference values at 0 °C (H=200 kJ/kg, S=1 kJ/kg·K) are adjusted to I/P reference conditions at –40 °F (H=0, S=0). The document then applies the provided conversion equations.",{"name":116,"@type":107,"acceptedAnswer":117},"Which equations are included for saturated liquid and vapor-related properties?",{"text":118,"@type":110},"It provides equations for saturated liquid enthalpy (hf), latent enthalpy (hfg), and saturated liquid entropy (sf), and uses standard Martin-Hou equations for vapor enthalpy and entropy.","https://schema.org",{"og:url":78,"og:type":121,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":123,"canonical":78},"index,follow",{"doc_id":125,"site_id":56},563334,1792109149,{"code":4,"msg":5,"data":128},{"doc_id":125,"user_id":129,"nickname":88,"user_avatar":130,"doc_module":9,"category_id":50,"category_name":51,"doc_title":59,"doc_description":61,"doc_content":131,"file_id":132,"file_url":133,"file_type":134,"file_size":135,"view_count":101,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":136,"language":137,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":138,"faqs":139,"seo_title":140,"seo_description":61,"update_tm":141,"read_time":142},1374404737137,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","Freon™ 410A  \nRefrigerant (R-410A)  \nThermodynamic Properties (SI Units)  \nNew tables of the thermodynamic properties of Freon™ 410A refrigerant (ASHRAE designation: R-410A [50/50]), have been developed and are presented here. These tables are based on extensive experimental measurements. Equations have been developed, based on the Martin-Hou equation of state, which represent the data with accuracy and consistency throughout the entire range of temperature, pressure, and density. Vapor enthalpy and entropy are calculated from the standard Martin-Hou equations. Additional equations have been developed for the calculation of saturated liquid enthalpy, latent enthalpy, and saturated liquid entropy and are presented here.  \nPhysical Properties  \nChemical Formula  \nMolecular Weight  \nBoiling Point at One Atmosphere  \nCritical Temperature  \nCritical Pressure  \nCritical Density  \nCritical Volume  \nCH2 F2/CHF2CF3  \n(50/50% by weight)  \n72.58  \n–51.58 °C (–60.84 °F) 72.13 °C (161.83 °F) 345.28 K (621 . 50°R) 4926.1 kPa (abs) (714.50 psia) 488.90 kg/m3 (30 .52 lb/ft3)  \n0.00205 m3/kg (0 . 0328 ft3/lb)  \nUnits and Factors  \nt = Temperature in °C  \nT = Temperature in K = °C + 273.15  \nP = Absolute Pressure in KiloPascal s (kPa [abs]) vf = Volume of saturated liquid in m3/kg  \nvg = Volume of saturated vapor in m3/kg V = Volume of superheated vapor in m3/kg df = 1/vf = Density of saturated liquid in kg/m3 dg = 1/vg = Density of saturated vapor in kg/m3 hf = Enthalpy of saturated liquid in kJ/kg hfg = Enthalpy of vaporization in kJ/kg  \nhg = Enthalpy of saturated vapor in kJ/kg H = Enthalpy of superheated vapor in kJ/kg sf = Entropy of saturated liquid in kJ/(kg)(K)  \nsg = Entropy of saturated vapor in kJ/(kg)(K)  \nS = Entropy of superheated vapor in kJ/(kg)(K)  \nCp = Heat capacity at constant pressure in kJ/(kg)(°C) Cv = Heat capacity at constant volume in kJ/(kg)(°C) vs = Velocity of sound in m/sec  \nThe gas constant, R = 8.314 J/(mole) (K) for Freon™ 410A, R = 0.11455 kJ/kg·K  \nOne atmosphere = 101.325 kPa  \nReference point for enthalpy and entropy: hf = 200 kJ/kg at 0 °C  \nsf = 1 kJ/kg·K at 0 °C  \nEquations  \nConversion Factors—SI Units to I/P Units  \nProperties listed in the following thermodynamic tables in SI units can be converted to I/P units using the conversion factors shown below. Please note that in converting enthalpy and entropy from SI to I/P units, a change in reference states must be included (from H = 200 and S = 1 at 0 °C for SI units to H = 0 and S = 0 at –40 °F for I/P units) . In the conversion equation below, H (ref) and S (ref) are the saturated liquid enthalpy and entropy at –40 °C. For Freon™ 410A, H (ref) = 141.1 kJ/kg and S (ref) = 0.7666 kJ/kg·K.  \nP (psia) = P (kPa [abs])·0 .14504 T ( °F) = T[ °C]·1 . 8) + 32  \nD (lb/ft3) = (kg/m3)·0 .062428 V (ft3/lb) = (m3/kg)·16 .018  \nH (Btu/lb) = H (kJ/kg)– H (ref)]·0 .43021 S (Btu/lb·°R) = S (kJ/kg·K)– S (ref)]·0 .23901 Cp (Btu/lb·°F) = p (kJ/kg·K)·0.23901  \nCv (Btu/lb·°F) = v (kJ/kg·K)·0 .23901 vs (ft/sec) = s (m/sec)·3 .2808  \nMartin-Hou Equation of State  \nCoefficients for the Martin-Hou equation of state arepresented below:  \n5  \nP = RT/(V–b) + (Ai + BiT + Ciexp[–kT/Tc])/(V-b)i  \ni=2  \nFor SI units  \nT and Tc are in K = °C + 273.15 , V is in m3/kg, and P is inkPa (abs) .  \nR = 0.11455 kJ/kg·K for Freon™ 410Ab, Ai, Bi, Ci, and k are constants:  \nA2 = –1.721781 E–01 B2 = 1.646288 E–04 C2 = –6.293665 E+00 A3 = 2.381558 E–04 B3 = –1.462803 E–08 C3 = 1.532461 E–02 b = 4.355134 E–04  \nA4 = –4.329207 E–07 B4 = 0.000000 E+00 C4 = 0.000000 E+00 A5 = –6.241072 E–10 B5 = 1.380469 E–12 C5 = 1.604125 E–07 k = 5.750000 E+00  \nX andY are constants used in the vapor enthalpy and entropy equations for the Martin-Hou equation of state:  \nX = 2.987192 E+02 Y = 8.463990 E–01  \nFor ENG units  \nT and Tc are in °R = °F + 459 . 67, V is in ft3/lb, and P is in psia. R = 0.147852 (psia)(ft3)/lb·°R for Freon™ 410A  \nb, Ai, Bi, Ci, and k are constants:  \nA2 = –6.407692 E+00 B2 = 3.403745 E–03 C","cbCaigscrDw1DMJQ","https://ap.wps.com/l/cbCaigscrDw1DMJQ","pdf",1057757,27,"English","# Physical Properties\n## Chemical Formula and Key Constants\n## Units and Factors\n# Conversion Factors—SI Units to I/P Units\n## Reference State Adjustments\n# Martin-Hou Equation of State\n## Coefficients for SI Units\n## Coefficients for ENG Units\n# Vapor and Ideal-Gas Heat Capacity Equations\n## Ideal Gas Heat Capacity (Cp/Cv)\n# Liquid Enthalpy, Latent Enthalpy, and Liquid Entropy Equations\n## Saturated Liquid Enthalpy (hf)\n## Latent Enthalpy (hfg)\n## Saturated Liquid Entropy (sf)\n# Vapor Pressure Correlation","[{\"question\":\"What method is used to generate Freon™ 410A thermodynamic data?\",\"answer\":\"The tables are based on extensive experimental measurements and represented using equations derived from the Martin-Hou equation of state, ensuring consistency across the full temperature, pressure, and density range.\"},{\"question\":\"How are enthalpy and entropy converted between SI and I/P units?\",\"answer\":\"The conversion requires changing reference states: SI reference values at 0 °C (H=200 kJ/kg, S=1 kJ/kg·K) are adjusted to I/P reference conditions at –40 °F (H=0, S=0). The document then applies the provided conversion equations.\"},{\"question\":\"Which equations are included for saturated liquid and vapor-related properties?\",\"answer\":\"It provides equations for saturated liquid enthalpy (hf), latent enthalpy (hfg), and saturated liquid entropy (sf), and uses standard Martin-Hou equations for vapor enthalpy and entropy.\"}]","Freon™ 410A - Thermodynamic Properties (SI Units) | PDF",1791829615,9]