# Water softening and treatment: condensing plant, feed pumps and heaters for steam users and manufacturers

A. Constable & co. ltd., 1906 - Feed-water purification - 308 pages

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Page 273 - To find the pressure in pounds per square inch of a column of water, multiply the height of the column in feet by .434. Approximately, we say that every foot elevation is equal to % Ib. pressure per square inch ; this allows for ordinary friction. To find the diameter of a pump cylinder...
Page 297 - FIRST LAW OF THERMODYNAMICS. Heat and mechanical energy are mutually convertible, and heat requires for its production, and produces by its disappearance, mechanical energy in the proportion of...
Page 297 - The temperature of a body is its thermal state considered with reference to its power of communicating heat to other bodies...
Page 296 - MEP in pounds per square inch; A = area of piston in square inches; L = length of stroke in feet; N — number of strokes per minute. Then...
Page 296 - Heat given to a substance, and warming it, is said to be sensible in the substance. Heat given to a substance, and not warming it, is said to become latent
Page 274 - Doubling the diameter of a pipe increases its capacity four times. Friction of liquids in pipes increases as the square of the velocity. The mean pressure of the atmosphere is usually estimated at 14.7 pounds per square inch...
Page 274 - The mean pressure of the atmosphere is usually estimated at 14.7 pounds per square inch, so that with a perfect vacuum it will sustain a column of mercury 29.9 inches or a column of water 33.9 feet high at sea level. To find the pressure in pounds per square inch of a column of water, multiply the height of the column in feet by .434.
Page 151 - A thermal unit is that amount of heat necessary to raise the temperature of 1 Ib. of water 1° by the Fahrenheit scale when at 39 '4°.
Page iii - Water Softening and Treatment, Condensing Plant, Feed Pumps, and Heaters for Steam Users and Manufacturers.
Page 296 - Latent heat is the quantity of heat which must be communicated to a body in a given state in order to convert it into another state without changing its temperature.