✨ Coal trial statistics
65
TRIALS OF NELSON (NEW ZEALAND) COAL, in comparison with NORTH COUNTRY and WELSH COAL, at the Trial Boiler, Woolwich, 23rd January, 1866.
| Kind of Coal. | Date of Trials. | Lbs Water evaporated to 1 lb Coal consumed, from 100° constant temperature feed water. | Cubic feet Water evaporated per hour, calculated from 100° constant temperature feed water. | Per centage of Clinker. | Per centage of Ash. | Per centage of both Clinker and Ash. | Width of Bars. | REMARKS. |
|---|---|---|---|---|---|---|---|---|
| Inch. | ||||||||
| COAL sent in BOXES—reported 18th December, 1865. | ||||||||
| NEW ZEALAND COAL. | 1865. | |||||||
| Grey Coal | November 17 | 9 | 39.19 | .53 | 4.32 | 4.85 | ½ | |
| Grey Coal | November 29 | 9.49 | 42.64 | .32 | 2.91 | 3.23 | ½ | No stoking tool used. |
| Grey Coal | December 1 | 9.47 | 43.97 | .29 | 2.68 | 2.97 | ½ | Fine ash. |
| Grey Coal | December 4 | 9.9 | 45.25 | .27 | 3.1 | 3.37 | ⅝ | Light grey smoke. |
| MEAN | ... | 9.46 | 42.70 | .35 | 3.25 | 3.6 | ½ & ⅝ | |
| Buller Coal | December 13 | 9.83 | 43.92 | .91 | 3.3 | 4.21 | ⅝ | Ditto. |
| COAL sent in BAGS—tried since the last was reported. | ||||||||
| 1866. | ||||||||
| Grey Coal | January 12 | 9.46 | 40.36 | .66 | 3.35 | 4.01 | ⅝ | |
| Grey Coal | January 13 | 9.46 | 43.24 | .8 | 3.85 | 4.65 | ⅝ | Not stoked |
| MEAN | ... | 9.46 | 41.8 | .73 | 3.6 | 4.33 | ⅝ | |
| Grey Coal | January 15 | 9.4 | 44.58 | .71 | 3.6 | 4.31 | ⅝ | |
| Grey Coal | January 17 | 9.39 | 43.99 | .84 | 3.6 | 4.44 | ⅝ | Stoked. |
| Grey Coal | January 18 | 9.46 | 44.87 | .52 | 3.1 | 3.62 | ⅝ | |
| MEAN | ... | 9.42 | 44.48 | .69 | 3.43 | 4.12 | ⅝ | |
| N.B. The coal sent in bags forms rather a rougher clinker than that in boxes. | ||||||||
| NORTH COUNTRY COAL. | MEAN OF TEN TRIALS | 8.72 | 50.32 | 2.17 | 3.71 | 5.89 | Made for the purpose of comparison with the trials of New Zealand coal. | |
| WELSH COAL. | MEAN OF TEN TRIALS. | 9.11 | 47.75 | 1.94 | 4.22 | 6.16 | Made for the purpose of comparison with the trials of New Zealand coal. |
(Signed) J. TRICKETT,
Chief Engineer.
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✨ LLM interpretation of page content
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Mr. Trickett's additional trials of New Zealand coal
(continued from previous page)
🌾 Primary Industries & Resources23 January 1866
Coal, New Zealand, Woolwich Dockyard, Experiments, Comparative statement, Grey Coal, Buller Coal, North Country Coal, Welsh Coal
- J. Trickett, Chief Engineer
Nelson Provincial Gazette 1866, No 16