quot;quot;quot;Gorrie’s process took advantage of the difference between temperature and heat. You can compress a gas without adding heat, but you will be raising its temperature by bottling up its molecules in a smaller space. Similarly, if you let a gas expand, its temperature will drop, even if you have not removed any heat. So if you compress a gas, draw off part of its heat, and then let it expand, it will be colder than it was to begin with. This is the basic idea behind refrigeration.quot;quot;I pretty sure, each time you compress a gas its temperature increase also its pressure. It mention on this article, you can compress a gas without adding heat. that not right!!!
You're not ADDING heat, but the gas (doesn't matter what kind), is hotter; thus it does now have MORE HEAT. Where did the heat come from? Work -- the work done via the mechanical force.
According to thermodynamics it is impossible practically, but but Perpetual Motion machine which is a pure theoretically concept, can press the air so slow that it does not generate heat.
Yes, Praxair makes product that return certain compressed gases to liquid form with our using energy. (this is not really compressing, i guess) The only thing is that the gas must be very cold. They use this process to reduce the loss of expensive gasses when the refill large liquid gas tanks and such. Basically the process uses the natural resonant frequency of the molecules to do this. Aka (doing no work or not adding heat)
yes you can compress gas without adding heat imagine this, take an empty pop can and cover its lid so that nothing can escape. Then begin to crush the can with your hand. It will compress to it breaks. This compression did not add any heat but it compressed the gas inside the can. However, by doing such, heat was released because of the compression of the gas. The compression, as the article states increased the collisions between gas molecules, thus making the gas increase in temperature
