Nelson Provincial Gazette – 1868 – No. 20

Page 88

✨ Table of coal efficiency statistics

TABLE II.

Mr. Barnett's 106. Showing the RELATIVE VALUE for Steam Purposes of North of England, Welsh, New South Wales,
Table, No. 2. and Grey and Buller Coal, calculated on the basis given by the Trials of these Coals at
WOOLWICH DOCKYARD, viz.—If 100 lbs. of Average North of England Coal will evaporate a
given Quantity of Water in an hour, this Table shows how the same work can be done by the
other Coals.

EXAMPLE OF CALCULATION—BULLER.

Water lbs.	Coal lbs.	Water lbs.	Coal lbs.	Water Cub. ft.	Time m. s.	Water Cub. ft.	Time m. s.
As 983	: 100	:: 825	: 83.92	As 43.92	: 60 00	:: 47.00	: 64 21

Kind of Coal.	Quantity of Coal used.	Time occupied in operation.	Incombustible matter remaining.
	lb	m. s.	Clinker. lb
Average North of England ... ...	100.00	60 00	1.00
North of England ... ... (Mean of 10 trials.)	94.61	56 02	2.09
Welsh ... ... (Mean of 10 trials.)	90.55	59 03	1.75
New South Wales ... ... (Eleven different kinds.)	99.50	60 16	2.09
Grey— In Boxes, dead small taken out Worst result ... ...	90.16	71 57	.48
Best result ... ...	83.33	62 19	.22
MEAN of 4 trials ...	87.21	65 56	.30
Grey— In Bags, dead small— Not stoked—Mean of 2 trials...	87.21	67 27	.64
Stoked—Mean of 3 trials ...	87.57	63 23	.60
GENERAL AVERAGE ...	87.48	65 30	.44
Buller ... ... (One trial.)	83.93	64 12	.76

PDF — Nelson Provincial Gazette 1868, No 20

The Nelson Provincial Council Buildings (depicted) were constructed beginning with the laying of the foundation stone on 26 August 1859, with the first Council meeting held there on 30 April 1861.

The buildings served Nelson for over a century before being demolished on 12 September 1969.

✨ LLM interpretation of page content

🌾 Trials of Nelson (New Zealand) coal in comparison with North Country and Welsh coal (continued from previous page)

Domain🌾 Primary Industries & Resources
KeywordsCoal, Nelson, Woolwich, Boiler efficiency, Statistics, Comparison, Grey coal, Buller coal, Mr. Barnett
👱🏽 Names

Mr. Barnett (Mr.), Author of the coal trial calculations

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