Nelson Provincial Gazette – 1868 – No. 20

Page 90

✨ Coal trial statistics



90

TABLE IV.

Mr. Burnett's Showing the RELATIVE VALUE for Steam Purposes of the different kinds of COAL tried at Woolwich (see Report and Tables I., II., and III.), arranged according to their Evaporative Powers, on the basis that Average North of England Coal will evaporate 100 per cent of Water in an Hour.

(Reduced from Table III.)

PART I.

POWER OF EVAPORATING WATER, WITHOUT REFERENCE TO TIME.

Per Cent.
1. GREY—Best result—½ inch Bars—Not stoked 120·00
2. BULLER—One Trial—½ inch Bars—Not stoked 119·12
3. GREY—Mean of Two Trials—½ and ⅜ inch Bars—Not stoked 114·65
4. GREY—Mean of Four Trials—Dead small—½ inch Bars—Not stoked 114·65
5. GREY—General Average of all Trials 114·29
6. GREY—Mean of Three Trials—Dead small—½ inch Bars—Stoked 114·19
7. GREY—Worst Result—½ inch Bars—Not stoked 110·89
8. WELSH—Mean of Ten Trials 110·42
9. NORTH OF ENGLAND—Mean of Ten Trials 105·68
10. NEW SOUTH WALES—Eleven different Kinds 100·48
11. NORTH OF ENGLAND—Average 100·00

PART II.

POWER OF EVAPORATING WATER IN A GIVEN TIME.

Per Cent.
1. GREY—Best Result—½ inch Bars—Not stoked 115·53
2. NORTH OF ENGLAND—Mean of Ten Trials 113·14
3. WELSH—Mean of Ten Trials 112·27
4. BULLER—One Trial—½ inch Bars—Not stoked 111·31
5. GREY—Mean of Three Trials—Dead small—½ inch Bars—Stoked 108·08
6. GREY—General Average of all Trials 104·68
7. GREY—Mean of Four Trials—½ and ⅜ inch Bars—Not Stoked 104·34
8. GREY—Mean of Two Trials—Dead small—⅜ inch Bars—Not stoked 101·97
9. NEW SOUTH WALES—Eleven different Kinds 100·04
10. NORTH OF ENGLAND—Average 100·00
11. GREY—Worst Result—½ inch Bars—Not stoked 92·46


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✨ LLM interpretation of page content

🌾 Table IV: Relative value for steam purposes of different kinds of coal (continued from previous page)

🌾 Primary Industries & Resources
Coal, Statistics, Nelson, Grey coal, Buller coal, Steam power, Evaporation, Comparative trials
  • Mr. Burnett