Cold chain: difference between revisions
Diff·revision 30 → 31·08:51, 9 Nov 2024
Difference between revision 30 and revision 31 of Cold chain. 2 lines changed; the page grew by 289 bytes.
| Revision 30 — 08:26, 3 Nov 2024 OralSemaOswin (talk) attribute range as a review estimate per talk 13,129 bytes +1,676 | Revision 31 — 08:51, 9 Nov 2024 LCellLeif (talk) link to the policy rather than restating it 13,418 bytes +289 | ||
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| 85 | where ΔH is an assumed activation energy and R the gas constant. Compendial practice takes ΔH as 83.144 kJ·mol⁻¹, chosen so that ΔH/R is exactly 10,000 K, which simplifies hand calculation and is the value used throughout this wiki.{{r|usp1079,haynes1971}} | 85 | where ΔH is an assumed activation energy and R the gas constant. Compendial practice takes ΔH as 83.144 kJ·mol⁻¹, chosen so that ΔH/R is exactly 10,000 K, which simplifies hand calculation and is the value used throughout this wiki.{{r|usp1079,haynes1971}} |
| 86 | 86 | ||
| + | 87 | A worked case shows why the statistic is used. Consider a warehouse that spends 12 hours of each day at 2 °C and 12 hours at 30 °C — an unrealistically extreme cycle, chosen to make the arithmetic legible. The arithmetic mean is 16.0 °C. Converting to kelvin, 275.15 K and 303.15 K: | |
| + | 88 | ||
| 87 | == References == | 89 | == References == |
| 88 | {{reflist}} | 90 | {{reflist}} |