What is the potetial energy of 1000psi compressed air which has a volume of 1 litre?

Answer 1

First off, why is the question phrased in Imperial and Metric units?

Second, what is the temperature of the container and what is the ambient temperature and pressure?

Given details of the compressor, linear, rotary dimensions, volumetric efficiency, power available you may be able to work out the Work Done in compressing the air.

This will not be equivalent to the Potential energy as the energy conversion efficiency would have to be known plus the conditions relating to the container. There will always be heat and friction losses in the compression of the air.

All the variables should be known before any calculation can be done.

Sorry, more accurate information is required.

Answer 2

Got this from a high school science website:

Kinetic and Potential Energy

Energy is defined as the ability to do work. When the work is actually being done, we term the energy "kinetic." When the work is waiting to be done, when there is the potential for work to be performed, we term the energy "potential." Kinetic energy is the energy of motion, potential energy comes from work having been done on an object which was then stored. For example, a rubber band zinged from your finger has kinetic energy. While it was stretched, waiting for you to release it, it had potential energy. The rubber band was stationary, but work had been done on it to move it to its present position.

Now, we know that the further we pull back a rubber band, the faster and further it will fly. Consider this situation in terms of potential and kinetic energy. When I pull back the rubber band to a great distance, I am doing more work to it than if I pulled it back only a small distance. More work means more energy is provided to and stored by the rubber band. When I release the rubber band, it has more energy to move. More energy means more work can be done by the rubber band. There is a connectedness, then, between potential and kinetic energy for matter.

For moving objects, we can easily calculate kinetic energy using the formula:

KE = (mass x velocity2)/2 or 1/2 mv2

Although mass and velocity both have great effects on kinetic energy, it is velocity more significantly determines kinetic energy.

Potential energy, on the other hand, is energy of position, not of motion. The amount of potential energy possessed by an object is proportional to how far it was displaced from its original position. If the displacement occurs vertically, raising an object off of the ground let's say, we term this Gravitational Potential Energy. We can calculate the gravitational potential energy of an object with this formula:

GPE = weight x height

An increase in the weight of an object or the height to which it is raised will result in an increase in the potential energy the object possesses. Once the object is dropped, the potential energy begins to decrease due to reduced height, but we also now see an increase in kinetic energy because the velocity is also increasing.

I think you need more info to use the formula they gave on the site. Good luck!

Answer 3

I know how to do it
but you will get much more from it
by doing it yourself!! LOL
CurlyQ is giving a lead to here.
Grab it.
He may not be Eng. BTW 'cause
we have no trouble UKside
in mixing our units