comparison: www/js/global.js
www/js/global.js
- changeset 59
- ad28e09e3abd
- parent 34
- a720353fada9
- child 67
- 883e897aad40
equal
deleted
inserted
replaced
| 58:83ccc36df675 | 59:ad28e09e3abd |
|---|---|
| 88 theme: theme | 88 theme: theme |
| 89 }); | 89 }); |
| 90 $("#jqxWidget").css('visibility', 'visible'); | 90 $("#jqxWidget").css('visibility', 'visible'); |
| 91 }); | 91 }); |
| 92 | 92 |
| 93 | |
| 94 | |
| 95 /* | |
| 96 * Berekeningen uit https://www.hobbybrouwen.nl/forum/index.php/topic,6079.msg69464.html#msg69464 | |
| 97 */ | |
| 98 function toIBU_Tinseth(Use, Form, SG, Volume, Amount, Boiltime, Alpha) { | |
| 99 var gravity = parseFloat(SG); | |
| 100 var liters = parseFloat(Volume); | |
| 101 var alpha = parseFloat(Alpha)/100; | |
| 102 var mass = parseFloat(Amount) * 1000; | |
| 103 var time = parseFloat(Boiltime); | |
| 104 var fmoment = 1.0; | |
| 105 var pfactor = 1.0; | |
| 106 | |
| 107 if ((Use == "Dry Hop") || (Use == "Dry hop")) { | |
| 108 fmoment = 0.0; | |
| 109 } else if (Use == "Whirlpool") { | |
| 110 fmoment = 0.0; | |
| 111 } else if (Use == "Mash") { | |
| 112 fmoment = 0.7; // Brouwhulp | |
| 113 } else if ((Use == "First Wort") || (Use == "First wort")) { | |
| 114 fmoment = 1.1; // Brouwhulp, Louis, Ozzie | |
| 115 } else if (Use == "Aroma") { | |
| 116 fmoment = 0.0; | |
| 117 } | |
| 118 | |
| 119 if (Form == "Pellet") { | |
| 120 pfactor = 1.1; | |
| 121 } | |
| 122 | |
| 123 // TODO: sg = (postBoilGravity - 1.0) * batchSize / boilSize; | |
| 124 | |
| 125 /* | |
| 126 * http://realbeer.com/hops/research.html | |
| 127 * | |
| 128 * decimal AA rating * grams hops * 1000 | |
| 129 * mg/l of added alpha acids = ------------------------------------- | |
| 130 * volume of finished beer in liters | |
| 131 * | |
| 132 * Bigness factor = 1.65 * 0.000125^(wort gravity - 1) | |
| 133 * | |
| 134 * 1 - e^(-0.04 * time in mins) | |
| 135 * Boil Time factor = ---------------------------- | |
| 136 * 4.15 | |
| 137 * | |
| 138 * decimal alpha acid utilization = Bigness factor * Boil Time factor | |
| 139 * | |
| 140 * IBUs = decimal alpha acid utilization * mg/l of added alpha acids | |
| 141 */ | |
| 142 var AddedAlphaAcids = (alpha * mass * 1000) / liters; | |
| 143 var Bigness_factor = 1.65 * Math.pow( 0.000125, gravity - 1); | |
| 144 var BoilTime_factor = ((1 - Math.exp(-0.04 * time)) / 4.15); // Glen Tinseth | |
| 145 var utiisation = Bigness_factor * BoilTime_factor; | |
| 146 | |
| 147 console.log(" AddedAlphaAcids:"+AddedAlphaAcids+" Bigness_factor:"+Bigness_factor+" BoilTime_factor:"+BoilTime_factor+" utilisation:"+utiisation); | |
| 148 console.log(" fmoment:"+fmoment+" pfactor:"+pfactor); | |
| 149 | |
| 150 var ibu = (Math.round(utiisation * AddedAlphaAcids * fmoment * pfactor * 10) / 10.0); | |
| 151 return ibu; | |
| 152 } | |
| 153 | |
| 154 | |
| 155 | |
| 156 function toIBU(Use, Form, SG, Volume, Amount, Boiltime, Alpha, Method) { | |
| 157 | |
| 158 console.log("toIBU_Tinseth("+Use+"," + Form + "," + SG + "," + Volume + "," + Amount + "," + Boiltime + "," + Alpha + "," + Method + ")"); | |
| 159 return toIBU_Tinseth(Use, Form, SG, Volume, Amount, Boiltime, Alpha); | |
| 160 } | |
| 161 | |
| 162 | |
| 163 |
