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10 kPa 1.5 psi Decrease in air pressure when going from Earth sea level to 1000 m elevation [citation needed] +13 kPa +1.9 psi High air pressure for human lung, measured for trumpet player making staccato high notes [48] < +16 kPa +2.3 psi Systolic blood pressure in a healthy adult while at rest (< 120 mmHg) (gauge pressure) [44] +19.3 kPa +2.8 psi
There were subsequent reboilerings which raised the working pressure to 140 psi (970 kPa) then to 160 psi (1,100 kPa), while their cylinder bore was increased from 17 to 17.5 inches (430 to 440 mm) when rebuilt after 1896. These changes led to considerably increased tractive effort. [4]
The pascal (Pa) or kilopascal (kPa) as a unit of pressure measurement is widely used throughout the world and has largely replaced the pounds per square inch (psi) unit, except in some countries that still use the imperial measurement system or the US customary system, including the United States.
140 psi (970 kPa)† 150 psi (1,000 kPa)†† ... † locos with 140 psi pressure †† locos with 150 psi pressure; References This page was last edited on 25 ...
T281 retained its original boiler, but the pressure permitted was increased to 140 psi (970 kPa). Around the same time (give or take a few years) the original cylinders were also replaced. However the engines had a limited life span from that point, as newer designs—particularly the DD series—eclipsed their power while providing better crew ...
130 psi (896 kPa) as built; 140 psi (965 kPa) later: Heating surface: 1,070–1,120 sq ft (99–104 m 2) Cylinders: 2 outside: Cylinder size:
During the 1880s, the boiler pressure of the locomotives was increased from 130 psi (900 kPa) to 140 psi (970 kPa), [4] and their cylinder bore was increased from 16 to 17 inches (410 to 430 mm), with those rebuilt after 1896 being fitted with 17.5 inches (440 mm) cylinders. [5] These changes led to considerably increased tractive effort.
An example of this is the air pressure in an automobile tire, which might be said to be "220 kPa (32 psi)", but is actually 220 kPa (32 psi) above atmospheric pressure. Since atmospheric pressure at sea level is about 100 kPa (14.7 psi), the absolute pressure in the tire is therefore about 320 kPa (46 psi).