comparison: www/js/global.js
www/js/global.js
- changeset 430
- 6fa1d64f7f16
- parent 429
- 0d2cf505957c
- child 438
- 61436d428454
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| 429:0d2cf505957c | 430:6fa1d64f7f16 |
|---|---|
| 772 return kt; | 772 return kt; |
| 773 } | 773 } |
| 774 | 774 |
| 775 | 775 |
| 776 | 776 |
| 777 /* | |
| 778 * Alcohol By Volume | |
| 779 */ | |
| 780 function abvol(og,fg){ | 777 function abvol(og,fg){ |
| 781 | 778 if(((og-fg)<0)||(fg<0.9))return 0; |
| 782 if(((og-fg)<0)||(fg<0.9)) | 779 var factor=og*3157*Math.pow(10,-5)+9.716*Math.pow(10,-2); |
| 783 return 0; | 780 return (og*1000-fg*1000)*factor; |
| 784 | |
| 785 /* | |
| 786 * Formule van Hans Halberstadt. De constante factor is afhankelijk van de | |
| 787 * zwaarte van het wort. | |
| 788 */ | |
| 789 var factor=og*3157*Math.pow(10,-5)+9.716*Math.pow(10,-2); | |
| 790 return (og*1000-fg*1000)*factor; | |
| 791 | |
| 792 /* | |
| 793 * Dit lijkt goed en wordt in veel moderne software gebruikt, maar... | |
| 794 * dit klopt niet. Busted door Hans Halberstadt. | |
| 795 * return (76.08 * (og-fg) / (1.775-og)) * (fg / 0.794); // Daniels | |
| 796 */ | |
| 797 | |
| 798 /* | |
| 799 * Brouwhulp, houdt geen rekening met zwaardere bieren. | |
| 800 * if ((4.749804 - fg) != 0) | |
| 801 * return 486.8693 * (og - fg) / (4.749804 - fg); | |
| 802 */ | |
| 803 } | 781 } |
| 804 | 782 |
| 805 | 783 |
| 806 | 784 |
| 807 /* | 785 /* |
| 972 return result; | 950 return result; |
| 973 } | 951 } |
| 974 | 952 |
| 975 | 953 |
| 976 | 954 |
| 977 function sg_to_plato(sg) { | 955 function sg_to_plato(sg){return ((135.997*sg-630.272)*sg+1111.14)*sg-616.868;} |
| 978 // http://www.brewersfriend.com/2012/10/31/on-the-relationship-between-plato-and-specific-gravity/ | 956 function plato_to_sg(plato){return 1+(plato/(258.6-((plato/258.2)*227.1)));} |
| 979 return ((135.997 * sg - 630.272) * sg + 1111.14) * sg - 616.868; | 957 function brix_to_sg(brix){return plato_to_sg(brix/my_brix_correction);} |
| 980 } | 958 function sg_to_brix(sg){return sg_to_plato(sg)*my_brix_correction;} |
| 981 | 959 |
| 982 | 960 |
| 983 | 961 |
| 984 function plato_to_sg(plato) { | 962 function estimate_sg(sugars,batch_size){ |
| 985 return 1 + (plato / (258.6 - ((plato / 258.2) * 227.1))); | |
| 986 } | |
| 987 | |
| 988 | |
| 989 | |
| 990 function brix_to_sg(brix) { | |
| 991 return plato_to_sg(brix / my_brix_correction); | |
| 992 } | |
| 993 | |
| 994 | |
| 995 | |
| 996 function sg_to_brix(sg) { | |
| 997 return sg_to_plato(sg) * my_brix_correction; | |
| 998 } | |
| 999 | |
| 1000 | |
| 1001 | |
| 1002 function estimate_sg(sugars, batch_size) { | |
| 1003 var plato = 100 * sugars / batch_size; | 963 var plato = 100 * sugars / batch_size; |
| 1004 | |
| 1005 var sg = plato_to_sg(plato); | 964 var sg = plato_to_sg(plato); |
| 1006 for (var i = 0; i < 20; i++) { | 965 for (var i = 0; i < 20; i++) { |
| 1007 if (sg > 0) | 966 if (sg > 0) |
| 1008 plato = 100 * sugars / (batch_size * sg); | 967 plato = 100 * sugars / (batch_size * sg); |
| 1009 sg = plato_to_sg(plato); | 968 sg = plato_to_sg(plato); |
| 1010 } | 969 } |
| 1011 // console.log("estimate_sg(" + sugars + "," + batch_size + ") : " + sg); | 970 return Math.round(sg * 10000) / 10000; |
| 1012 return sg; | |
| 1013 } | 971 } |
| 1014 | 972 |
| 1015 | 973 |
| 1016 | 974 |
| 1017 function estimate_fg(percSugar, percCara, WGratio, TotTme, Temp, attenuation, og) { | 975 function estimate_fg(percSugar, percCara, WGratio, TotTme, Temp, attenuation, og) { |
