 | American Gas Institute - 1907 - 1050 σελίδες
...any temperature between 32° and 212°, that in general the British Thermal Unit may be safely taken as the amount of heat necessary to raise the temperature of one pound avoirdupois of pure water one degree Fahrenheit. Thus we may say that to raise the temperature of 30... | |
 | Cecil Hobart Peabody - 1907 - 552 σελίδες
...discussions, the importance of the consideration is much less. The specific heat h of saturated vapor is the amount of heat necessary to raise the temperature of one pound of the vapor one degree, under the condition that the pressure shall Volume Cu. M. Volume Cu. M. Volume... | |
 | James Thom Beard - 1908 - 434 σελίδες
...specif,c heat under constant pressure, and specific heat under constant volume. Taking the quantity of heat necessary to raise the temperature of one pound...water at its maximum density one degree Fahrenheit as unity, the first two columns of the table show the quantity of heat (BTU) that will produce the... | |
 | Cecil Hobart Peabody, Edward Furber Miller - 1908 - 488 σελίδες
...observed and that of saturated steam of the same pressure. The specific heat of superheated steam is the amount of heat necessary to raise the temperature of one pound of superheated steam i° Fahrenheit. The specific heat has been found to increase with the pressure... | |
 | William Hannum Grubb Bullard - 1908 - 990 σελίδες
...calorie. The work equivalent to one calorie is equal to 42,000,000 ergs. The British unit of heat is the amount of heat necessary to raise the temperature of one pound of water 1° F. The relation of these units is given under the unit of electrical work, the joule.... | |
 | Cecil Hobart Peabody - 1909 - 572 σελίδες
...discussions, the importance of the consideration is much less. The specific heat h of saturated vapor is the amount of heat necessary to raise the temperature of one pound of the vapor one degree, under the condition that the pressure shall increase with the temperature,... | |
 | University of Missouri. Engineering Experiment Station - 1910 - 858 σελίδες
...been loaded during the day. EXPLANATION OF TERMS. A heat unit is the quanity of heat required to raise the temperature of one pound of water, at its maximum density, one degree Fahrenheit. The expression from and at 212 degrees F. means that the water 3 co O o E I CO I IL O III 3 _l < O... | |
 | Ezra W. Longanecker - 1910 - 186 σελίδες
...horse-power. Then the energy required to raise 33,000 pounds one foot high represents one horse-power. 543. The amount of heat necessary to raise the temperature of one pound of water from a temperature of 39 degrees Fahrenheit to 40 degrees, or to raise the temperature one... | |
 | 1917 - 770 σελίδες
...for instance, by means of an electric glow wire and the temperature rise of the water is measured. The amount of heat necessary to raise the temperature of one pound of water one degree Fahrenheit is called one British thermal unit, abbreviated B. tu Since heat is... | |
 | Lynn Webster Ellis, Edward Aloysius Rumely - 1911 - 380 σελίδες
...comparison. For English-speaking countries the standard is the British thermal unit (Btu), which is the amount of heat necessary to raise the temperature of one pound of pure water from 62° to 63° F. The amount of heat units in fuel or food can be determined by exploding... | |
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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. 
