 In defining the unit of heat it is necessary to specify the temperature of the water because the amount of heat necessary to raise the temperature of one pound of water through one degree varies slightly at different temperatures.  Proceedings of the American Gas Institute - Էջ 230American Gas Institute - 1907Ամբողջությամբ դիտվող - Այս գրքի մասին
 | John Pringle Nichol - 1860 - 942 էջ
...exact equivalence, capable of easy statement, holds between tlicse heat motions, and ordinary motions. The amount of heat necessary to raise the temperature of one pound of water one Fahrenheit degree from 32°, is called the thermal unit, and this thermal unit is accompanied... | |
 | American Gas Light Association - 1903 - 678 էջ
...density of water, which is 39. 1 degrees Fahrenheit. The variation in the quantity of heat neceasary to raise the temperature of a pound of water one degree...requires 600 British thermal units ; for we have raised 30 pounds of water through 20° of temperature, and to raise 30 pounds of water one degree requires... | |
 | American Gas Light Association - 1897 - 450 էջ
...water one degree, is so slight for any temperature between 32° and 212° that in general the heat unit may be safely taken as the amount of heat necessary...requires 600 British Thermal Units ; for we have raised 30 pounds of water through 20° of temperature, and to raise 30 pounds of water one degree requires... | |
 | American Gas Light Association - 1901 - 630 էջ
...ot water one degree, is so slight for any temperature between 32° and 2120 that in general the heat unit may be safely taken as the amount of heat necessary...to raise the temperature of 30 pounds of water from 400 to 600 Fahrenheit requires 600 British Thermal Units; for we have raised 30 pounds of water through... | |
 | Isaac Todhunter - 1877 - 450 էջ
...we must select a unit of heat, which is also termed a thermal unit. Tims wo may_ take for this unit the amount of heat necessary to raise the temperature of one pound of water from 0° C. to 1° C.; or we may take for this unit tho amount of heat necessary to melt one... | |
 | Noah Webster - 1884 - 362 էջ
...unit chosen for tho comparison or calculation of the quantity of heat. That most commonly employed Is the amount of heat necessary to raise the temperature of one pound of water one degree centigrade. In Franco the thermal unit in the rnlorie. ThCr'mal-ly, adv. Ina thermal... | |
 | 1879 - 542 էջ
...out, in the process of combustion, rather more than 14,000 British units of heat, each such unit being the amount of heat necessary to raise the temperature ] of one pound of water 1° Fahrenheit of j heat. To effect this combustion, 140 cubic feet of atmospheric air, weighing... | |
 | Sturtevant, B. F., Co - 1896 - 184 էջ
...condensation of that steam, reappear as available for heating. The standard unit of heat is equivalent to the amount of heat necessary to raise the temperature of one pound of water through one degree Fahrenheit at its point of greatest density. A heat unit is not to be confounded... | |
 | Angus Sinclair - 1890 - 448 էջ
...necessary for the comprehension of combustion as ordinary weights and measures are for mercantile purposes. The amount of heat necessary to raise the temperature of one pound of water, at its greatest density, one degree Fahrenheit is called a heat-unit, or sometimes a thermal... | |
 | Isaac Sharpless, George Morris Philips - 1892 - 384 էջ
...capable of doing a definite amount of work. (See Art. 20.) The English unit referred to in Art. 353 is the amount of heat necessary to raise the temperature of one pound of water one degree Fahrenheit. This unit has no other name. The " Calorie," derived from the Metric... | |
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