HEATING ROOMS BY STEAM. $29 



C, into the copper tube M, M, which also receives the History and 



■water condensed in C, C, by means of the short tubes N, N. account of ths 



.,.'■' ' method of 



The pipe C, C, is itself so much inclined as to cause the heating rooms 



water to run along it to the tubes N, N, and the pipe G in ^^ steam. 



the garret has an inclination of 18 inches in its length, to 



bring the water condensed in it back to the middle pipe E. 



The tube M, M, carries back the water through the gable 



to the boiler, which stands five feet lower than this tube. 



It is material to return the water to the boiler, as, being 



nearly at a boiling heat, a considerable expence of fuel is 



thereby saved. 



The large pipes are ten in dies in diameter, and are made 

 of the second kind of tinned iron plates. The dimensions 

 of the smaller tubes are seen by their comparative size in 

 the drawing, and perhaps they might be varied without 

 inconvenience. 



The apparatus erected as here described, has been found 

 sufficiently strong, and has required no material repairs 

 since the first alterations were made. The leading object 

 in the instance under consideration being to save fuel, in 

 order to derive as much heat as possible from a given quan^ 

 tity of fuel, the flue from the furnace, which heats the 

 boiler, is conveyed into common stone pipes placed in the 

 gable. These are erected so as to prevent any danger of 

 fire, in the manner shown in the drawing, Fig. 2. The 

 steam with this auxiliary communicates a heat of about 70* 

 to the mill, the rooms of which are 50 feet long, 32f feet 

 wide, and 8| feet high, except the lower story and garret; 

 the former of wjiich is 11, and the latter 7 feet high. 

 The rooms warmed in this manner are much more whole- 

 some and agreeable than those heated by the best con- 

 structed stoves, being perfectly free from vapour or conta- 

 juinated air. 



By various experiments it appears, that the expence of 

 fuel is scarcely one half of what is necessary to prodnce the 

 same degree of hc^at with the best constructed stoves. The 

 memorialist was the better able to make tiie comparison, 

 since he had previously had five years experience of cotton 

 mills on what waSj at that tinie^ reckon,ed the most ap- 

 proved plar^ 



4fter 



