OCR Text |
Show PUMP WATER FOR IRRIGATION Implement Should Be Judged by Total To-tal Efficiency and Relation of Water Wa-ter Discharged to Fuel Used. A pump is not to be Judged by the amount of water It discharges, but by the total efficiency and the relation rela-tion of the water discharged to the amount of fuel consumed. The runners run-ners of centrifugal pumps can be bont a very little, causing the pump to discharge a very much increased volume, and yet It will not be a paying pay-ing proposition as compared with a smaller discharge that requires less power. It is very important to deal with a responsible firm, one able and willing to make good when a pump fails to perform the work it has been estimated esti-mated to do, so many factors enter into the case that pumps will not give the same satisfaction often in cases where circumstances Beem almost exactly ex-actly alike. A good firm will, if they make a mistake in furnishing a type of pipe unsulted to the work, make good the mistake. While on this subject of efficiency it may be mentioned that windmills will not do the same work where the average velocity of the wind current Is unsulted to them, and it is very important im-portant to discover what the average velocity is before establishing an unsuitable type. Some railroads are Installing wind gauges, and from these an approximation approxi-mation can be made. |