{"action":"created","issue":{"url":"https://api.github.com/repos/CoolProp/CoolProp/issues/616","labels_url":"https://api.github.com/repos/CoolProp/CoolProp/issues/616/labels{/name}","comments_url":"https://api.github.com/repos/CoolProp/CoolProp/issues/616/comments","events_url":"https://api.github.com/repos/CoolProp/CoolProp/issues/616/events","html_url":"https://github.com/CoolProp/CoolProp/issues/616","id":70362586,"number":616,"title":"Can't compute properties of SES36 for (H,S) inputs or (H,D) inputs","user":{"login":"Astrinus","id":11050182,"avatar_url":"https://avatars.githubusercontent.com/u/11050182?v=3","gravatar_id":"","url":"https://api.github.com/users/Astrinus","html_url":"https://github.com/Astrinus","followers_url":"https://api.github.com/users/Astrinus/followers","following_url":"https://api.github.com/users/Astrinus/following{/other_user}","gists_url":"https://api.github.com/users/Astrinus/gists{/gist_id}","starred_url":"https://api.github.com/users/Astrinus/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Astrinus/subscriptions","organizations_url":"https://api.github.com/users/Astrinus/orgs","repos_url":"https://api.github.com/users/Astrinus/repos","events_url":"https://api.github.com/users/Astrinus/events{/privacy}","received_events_url":"https://api.github.com/users/Astrinus/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":7,"created_at":"2015-04-23T09:42:55Z","updated_at":"2015-04-27T07:47:41Z","closed_at":null,"body":"I'm working on SES36 and I have some problems when I use enthalpy as an input along with entropy or density, although in the latter case it happens in a smaller region, only on a subset of the twophase region.\r\nIt seems that for S < 1613 J/kg/K or D < 784 kg/m^3 the routine fails...\r\n\r\n    >> CoolProp.PropsSI('S','P',4.6e5,'Q',0,'SES36')\r\n        ans = 1337.2\r\n    >> CoolProp.PropsSI('H','P',4.6e5,'Q',0,'SES36')\r\n        ans = 2.9082e+05\r\n    >> CoolProp.PropsSI('S','P',4.6e5,'Q',1,'SES36')\r\n        ans = 1700.1\r\n    >> CoolProp.PropsSI('H','P',4.6e5,'Q',1,'SES36')\r\n        ans = 4.2295e+05\r\n    >> CoolProp.PropsSI('P','S',1337,'H',2.91e5,'SES36')\r\n        Warning: Unable to invert ancillary equation for sL for value -102.45 with Tminval -203.428 and Tmaxval -1.#IND\r\n    >> CoolProp.PropsSI('P','S',1600,'Hmass',3.5e5,'SES36')\r\n        Warning: Unable to invert ancillary equation for sL for value -53.8349 with Tminval -203.428 and Tmaxval -1.#IND\r\n    >> CoolProp.PropsSI('P','S',1400,'Hmass',3.5e5,'SES36')\r\n        Warning: Unable to invert ancillary equation for sL for value -90.8049 with Tminval -203.428 and Tmaxval -1.#IND  \r\n    >> CoolProp.PropsSI('P','S',1613,'Hmass',4.2e5,'SES36')\r\n        ans = 2.0621e+07\r\n    >> CoolProp.PropsSI('P','S',1612,'Hmass',4.21e5,'SES36')\r\n        Warning: Unable to invert ancillary equation for sL for value -51.6167 with Tminval -203.428 and Tmaxval -1.#IND  \r\n    >> CoolProp.PropsSI('D','P',4.6e5,'Q',0.5,'SES36')\r\n        ans = 64.795\r\n    >> CoolProp.PropsSI('H','P',4.6e5,'Q',0.5,'SES36')\r\n        ans = 3.5689e+05\r\n    >> CoolProp.PropsSI('P','D',64.795,'H',3.57e5,'SES36')\r\n        Warning: p is not a valid number \r\n    >> CoolProp.PropsSI('T','H',4.23e5,'D',784,'SES36')\r\n        ans = 441.44\r\n    >> CoolProp.PropsSI('T','H',4.23e5,'D',783,'SES36');\r\n        Warning: p is not a valid number "},"comment":{"url":"https://api.github.com/repos/CoolProp/CoolProp/issues/comments/96543284","html_url":"https://github.com/CoolProp/CoolProp/issues/616#issuecomment-96543284","issue_url":"https://api.github.com/repos/CoolProp/CoolProp/issues/616","id":96543284,"user":{"login":"Astrinus","id":11050182,"avatar_url":"https://avatars.githubusercontent.com/u/11050182?v=3","gravatar_id":"","url":"https://api.github.com/users/Astrinus","html_url":"https://github.com/Astrinus","followers_url":"https://api.github.com/users/Astrinus/followers","following_url":"https://api.github.com/users/Astrinus/following{/other_user}","gists_url":"https://api.github.com/users/Astrinus/gists{/gist_id}","starred_url":"https://api.github.com/users/Astrinus/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Astrinus/subscriptions","organizations_url":"https://api.github.com/users/Astrinus/orgs","repos_url":"https://api.github.com/users/Astrinus/repos","events_url":"https://api.github.com/users/Astrinus/events{/privacy}","received_events_url":"https://api.github.com/users/Astrinus/received_events","type":"User","site_admin":false},"created_at":"2015-04-27T07:47:41Z","updated_at":"2015-04-27T07:47:41Z","body":"It is a bit difficult since some blocks must be rewrote to handle density (which is currently ignored, handling only T, P, S and H, but there are convergence problem if I use T and P for isenthalpic transformations). Anyway, that section of the project has been delayed, so don't put too much effort in this issue. In the future, we'll rewrite some of the blocks. Thanks anyway."}}