BTU conversion, for interested parties

[Delta-T]

I have known for some time that the "BTU" is the amount of energy it takes to heat 1 lb of water 1 degree F (at 1 atmosphere), but did you also know...

One BTU is approximately:

1 054 – 1 060 J (joules)
2.931 ×10-4 kWh (kilowatt hours)
252 – 253 cal (calories, or "little calories")
0.25 kcal (kilocalories, "large calories", or "food calories")
25 031 – 25 160 ft·pdl (foot-poundal)
778 – 782 ft·lbf (foot-pounds-force)

I actualy dont know what you use a "foot-poundal" for. Anybody?

 

[Kittery]

Hey there...

From Wikipedia, the free encyclopedia
The Foot-poundal is a non-SI unit of energy or work. The foot-poundal is the amount of energy expended when a force of one poundal acts through a distance of 1 foot along the direction of the force and is defined as 1 ft•pdl. The foot-poundal can also be expressed as the calculable energy or work done over the distance of one foot by a one pound mass accelerated at one foot per second, per second.

The foot-poundal is equal to 1/32.174049 of the more commonly used foot-pound force.

The foot-poundal is a part of the foot-pound-second system of units introduced in 1879 and is one of several specialized subsystems of mechanical units named; Absolute English System.

And a Poundal is...
The poundal is a non-SI unit of force. It is a part of the foot-pound-second system of units, a coherent subsystem of English units introduced in 1879, and one of several specialized subsystems of mechanical units used as aids in calculations. It is defined as 1 lb·ft·s−2, or in words, as the force necessary to accelerate a pound of mass at 1 foot per second, per second. 1 pdl = 0.138 254 954 376 N exactly.

I Sooooo love Wikipedia!