235 



From these figures it will be seen that there is only a slight difference 

 in the cost of power for the two types of machinery, but these figures 

 would diverge in favor of the gas producers as the size of tbe plant wa.. 

 increased. If the plant were located in the coal fields and the power 

 brou^bt over as high voltage current, the an.ount of money saved on freight 

 would pay for the transmission line in about eighteen months. In tact tor 

 such a plant the line losses and cost of transformers at both ends of the 

 line would bring the price of power to about the same figure 



Probablv the ideal solution for the power question would be to fum sh 

 the entire district with power. This plant to be located in the coal fields 

 and be of the by-,u-oduct recovery type with gas engines and the power 

 transmitted at 33,000 volts. Such a line and voltage would be the cheapest 

 for conditions as they would be in this district. 



There are numerous plants in Europe which depend upon the by-piod- 

 ucts recovered for their profits. A good example is the plant at Dudley 

 Port South Staffordshire. England, where a Mond by-product plant pxac- 

 ticaliy pays for all the fuel used, in the by-products recovered. The two 

 principal by-products are ammonium sulphate and tar. The ammon.um .U^ 

 pbate alone returned ...2.5 per ton of coal burned, and the tar sells for 

 $0 19 per ton of coal burned. 



Ordloar. M.umloou. coal wiU vetun.SO to 90 pound, of .„1„M . of 

 ammonia per ton. Such plant, now in operation proflnce a K. »watt per 

 hour of power on 1.54 lb. of coal fired. Since the pnce ot coal t. .o low 

 •n his d^rlot the cost of power wouUl he hut little over the fixed charge 

 on the investment This prohlem ot power economy for the ,iuarnes begm 

 to he ot especial Interest over the entire district, and if the >s.ue were met 

 snuareiy a great saving of money would resnit. as weil a. great economy tn 

 coal consumption. 



