Helium gas pressure-temperature

At or above zero° C helium is extremely close to an ideal gas; That is: PV=nRT

I think that is cool that you can become anything that you want to he up the good work bye

dkwarner beat me to it.

"A pressure chart for Helium above zero Celsius would be much appreciated."

Hi DaS: PV = kT is the relationship for all gasses. Pressure x Volume = constant of proportionality for a give quantity and specific gas and T is the temperature. Try <Google.com> and <Yahoo.com> search engines for properties of gasses and again for Helium.

Hello Stirling Stan,

Thank you for your help.

Bummed out on a Google search, didnt think about Yahoo, if I had a second brain it would be lonely.

Thank you dkwaner , much appreciaited.

Stirling engines running at higher pressures can be as noisy as an IC engine no matter what gas is the working medium!

United Stirling of Sweden had a small stirling engine (V160) that used helium as the working fluid, one of these engines was on trial at Viborg in Denmark utilising landfill gas as its fuel, this engine when running at optimum pressure was extremely noisy???

Spencer.

OOPS I just woke up with the realization that the gas laws do not apply to high or low temperatures.

Physical Properties of Helium

Helium is a colorless, odorless, tasteless gas. It has a number of unusual properties. For example, it has the lowest boiling point of any element, -268.9°C (-452.0°F). The boiling point for a gas is the temperature at which the gas changes to a liquid. The freezing point of helium is -272.2°C (-458.0°F). Helium is the only gas that cannot be made into a solid simply by lowering the temperature. It is also necessary to increase the pressure on the gas in order to make it a solid. MORE information via above link.

OOPS I just woke up with the realization that the gas laws do not apply to high or low temperatures.

Regarding low temperatures, that's why I began with "At or above zero° C" (post 1).

Regarding high temperatures, it is true that molecular gasses will reach a point where they dissociate into other molecules or atoms, but since there are no compounds of helium, this does not apply. At extremely high temperatures (eg. in or on the sun) other things happen (eg. fusion), but this has nothing to do with Sterling engines.

So I don't see any reason for your oops.

Dick