www/includes/formulas.php@d341f0a91a91 (annotated)
www/includes/formulas.php
Sun, 12 Aug 2018 21:24:33 +0200
- author
- Michiel Broek <mbroek@mbse.eu>
- date
- Sun, 12 Aug 2018 21:24:33 +0200
- changeset 11
- d341f0a91a91
- child 83
- 85521c6e0022
- permissions
- -rw-r--r--
Added fermentable inventory
| 11 | 1 | <?php |
| 2 | ||
| 3 | ||
| 4 | function ebc_to_srm($ebc) | |
| 5 | { | |
| 6 | // Srm = -1.32303E-12*Ebc4-0.00000000291515*Ebc3+0.00000818515*Ebc2+0.372038*Ebc+0.596351 | |
| 7 | return -1.32303E-12 * pow($ebc, 4) - 0.00000000291515 * pow($ebc, 3) + 0.00000818515 * pow($ebc, 2) + 0.372038 * $ebc + 0.596351; | |
| 8 | // return $ebc * 0.508; | |
| 9 | } | |
| 10 | ||
| 11 | ||
| 12 | function srm_to_ebc($srm) | |
| 13 | { | |
| 14 | // EBC = 0.000000000176506*Srm4+ 0.000000154529*Srm3-0.000159428*Srm2+2.68837*Srm-1.6004 | |
| 15 | // | |
| 16 | // Formule van Adrie Otten. brouwhulp. | |
| 17 | $ebc = 0.000000000176506 * pow($srm, 4) + 0.000000154529 * pow($srm, 3) - 0.000159428 * pow($srm, 2) + 2.68837 * $srm - 1.6004; | |
| 18 | return round($ebc); | |
| 19 | } | |
| 20 | ||
| 21 | ||
| 22 | ?> |
