Proceedings of the American Academy of Arts and Sciences, Volumen3Metcalf and Company, 1857 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 28
... heat can be used over and over again as a motive power . The idea that power once used cannot be used again , he considered a funda- mental rule , which has only a single exception , that of steam ; and even this exception rests on two ...
... heat can be used over and over again as a motive power . The idea that power once used cannot be used again , he considered a funda- mental rule , which has only a single exception , that of steam ; and even this exception rests on two ...
Página 29
... heat be raised above 550 ° , which is the maximum temperature said to be used in Ericsson's engine ; to get fifteen pounds to the square inch , he must heat his cylinder to 1000 ° , or to a red heat . Professor Peirce used 480 in his ...
... heat be raised above 550 ° , which is the maximum temperature said to be used in Ericsson's engine ; to get fifteen pounds to the square inch , he must heat his cylinder to 1000 ° , or to a red heat . Professor Peirce used 480 in his ...
Página 30
... heat in the wire - gauze apparatus is 30 ° below the heat in the cylinders ; all the air in the cylinders must have sup- plied to it 60 ° of heat . At least one half a pound pressure to the inch , and probably much more , is required to ...
... heat in the wire - gauze apparatus is 30 ° below the heat in the cylinders ; all the air in the cylinders must have sup- plied to it 60 ° of heat . At least one half a pound pressure to the inch , and probably much more , is required to ...
Página 31
... heat of the steam being twice the 500 ° the air required , and the capacity of water for heat being nearly four times that of air , the steam - engine required eight times as much fuel as the air - engine did . Half the power of the air ...
... heat of the steam being twice the 500 ° the air required , and the capacity of water for heat being nearly four times that of air , the steam - engine required eight times as much fuel as the air - engine did . Half the power of the air ...
Página 32
... heat of the cylinders at 480 , whereas the actual heat used was only 384 ° . The " cut - off " may be so short that the regenerator would be use- less , the air going in and out at the same temperature , though more fuel would be ...
... heat of the cylinders at 480 , whereas the actual heat used was only 384 ° . The " cut - off " may be so short that the regenerator would be use- less , the air going in and out at the same temperature , though more fuel would be ...
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