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25TH MARCH ammonia is passed AUGUSTUS W Belfast Mechanical boiler brine coil cooling effect degree per hour difference of temperature ebullition commenced Ebullition produces Engineering Association evaporating water absorbs evaporation begins exhaust heaters exhaust steam heater exterior source feed was receiving FEED WATER HEATING flow of heat foot per degree greater saving Green's economisers heat is absorbed heat is lost heat more rapidly heat passes heat the feed heat transmitted heat units increase the efficiency JOHN PERRY layer of water less heat liquid ammonia LIVE STEAM FEED live steam heater Mechanical and Engineering Moncaster LIVE STEAM non-evaporating water PAPER READ passage of heat perature power of evaporation quantity of heat quantity of moisture raise the temperature rapidly than non-evaporating rate of evaporation rate of transmission READ BY AUGUSTUS relative quantity saving in fuel square foot stagnant layer STEAM FEED WATER temperature of evaporation theory water absorbs heat whole heating surface
Popular passages
Page 5 - ... plate, the pressure on the hotter side must be greater than the pressure on the colder side. This difference of pressure will depend on the chemical nature of the gas, the mean pressure of the gas, the absolute temperature, the relation between the size of the pores and the density of the gas, and the difference of temperature on the two sides of the plate, but not on the thickness of the plate. Law III. For the same plate and the same difference of temperature, when the gas is sufficiently dense,...
Page 1 - ... combustion takes place is always the same for the same substance. The nitrogen reduces the temperature of the furnace, since a portion of the heat given off by combustion is required to heat the nitrogen. (1213) No. See definition of combustion, Art. 2OO3. (1214) See Art. 2OO7. (1215) See Art. 2OO8. (1216) The number of heat units required to convert a pound of water at 32° into steam at 400° may be found by means of formula 14O. H= 1,081.
Page 7 - ... the transmission increases at a. faster rate than the difference of temperature, so that it is nearly proportional to the square of the difference, as is shown by Blechyndeirs (T- ty experiments, which will be described later.
Page 4 - ... showing a greatly accelerated passage of heat when evaporating, 2^ times as much as when only heating.
Page 7 - This is exactly what might have been expected from what is known of...