The Heine Safety Boiler Co: Manufacturers of Water Tube Steam Boilers for All Pressures, Duties and Fuels

Передня обкладинка
C.B. Woodward, 1900 - 186 стор.
 

Загальні терміни та фрази

Популярні уривки

Сторінка 84 - The analysis of the flue gases is an especially valuable method of determining the relative Value of different methods of firing or of different kinds of furnaces. In making these analyses great care should be taken to procure average samples, since the composition is apt to vary at different points of the flue.
Сторінка 81 - Keeping the Records. — Take note of every event connected with the progress of the trial, however unimportant it may appear. Record the time of every occurrence and the time of taking every weight and every observation. The coal should be weighed and delivered to the fireman in equal proportions, each sufficient for not more than one hour's run, and a fresh portion should not be delivered until the previous one has all been fired. The time required to consume each portion should be noted, the time...
Сторінка 79 - I. Determine at the outset the specific object of the proposed trial, whether it be to ascertain the capacity of the boiler, its efficiency as a steam generator, its efficiency and its defects under usual working conditions, the economy of some particular kind of fuel, or the effect of changes of design, proportion, or operation ; and prepare for the trial accordingly. II. Examine the boiler, both outside and inside; ascertain the...
Сторінка 80 - Watermeters, as a rule, should only be used as a check on other measurements. For accurate work, the water should be weighed or measured in a tank. 3. Thermometers and pyrometers for taking temperatures of air, steam, feed-water, waste gases, etc.
Сторінка 81 - The ash pits should be thoroughly cleaned at once after starting. Before the end of the test the fires should be burned low, just as before the start, and the fires cleaned in such a manner as to leave the same amount of fire, and in the same condition, on the grates as at the start.
Сторінка 81 - The boiler being thoroughly heated by a preliminary run, the fires are to be burned low and well cleaned. Note the amount of coal left on the grate as nearly as it can be estimated; note the pressure of steam and the water level.
Сторінка 81 - ... portion. It is desirable that at the same time the amount of water fed into the boiler should be accurately noted and recorded, including the height of the water in the boiler, and the average pressure of steam and temperature of feed during the time.
Сторінка 79 - boiler, both outside and inside ; ascertain the dimensions of grates, heating surfaces, and all important parts ; and make a full record describing the same, and illustrating special features by sketches. The area of heating surface is to be computed from the surfaces of shells, tubes, furnaces, and fire-boxes in contact with the fire or hot gases.
Сторінка 80 - The conditions of the boiler and furnace in all respects should be, as nearly as possible, the same at the end as at the beginning of the test. The steam pressure should be the same, the water-level...
Сторінка 83 - Quality of Steam. — The percentage of moisture in the steam should be determined by the use of either a throttling or a separating steam calorimeter. The sampling nozzle should be placed in the vertical steam pipe rising from the boiler. It should be made of £-inch pipe, and should extend across the diameter of the steam pipe...

Бібліографічна інформація