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Progress, Volume I, Issue 8, 1 June 1906, Page 196

REMARKS ON THE RESULTS OF THE TESTS. Dimensions — The dimensions of the engines iioioß and 110358, are amply sufficient for realis

ing the powers of 8.5 and 20 b.h.p. respectively. These powers are obtained with an average pressure not exceeding 65 lbs. per sq. mch, and the real average pressure attains 75 lbs. per sq. inch, viz., about 15 to 20% more. Fuel — We have accounted for the consumption of fuel in two ways Ist. — By filling up the producers at the end of the tests before consolidating the fuel by poking the fire and clearing the grate. 2nd. — By filling up after consolidating and poking. The second is the only accurate method and is that we currently make use of, and it is from the figures given by it that we have deduced the efficiences. The first has been adopted m certain public tests recently carried out in Scotland, the results of which were published, and we only use it here for purposes of comparison. Efficiencies ■ — The mechanical efficiency of the engines is very favourable, since it exceeds 80%, although the effective power remains about 15% below the figure which it may attain for the engines 110108 and 110358. With regard to the thermal efficiency of 0.241 (engine No. 10596B) it may be looked upon as one of the most remarkable which we have met up to the present for a plant of engine and producer of such power.