You're allowed Cv comes out here for this adiabatic expansion, which is not a constant volume only because this is always true for an ideal gas.
绝热过程写下,这个式子是因为它对理想气体都成立,并没有用到等容过程的条件,只用了理想气体的条件。
it's kind of like the Joule expansion, an ideal gas.
焦耳-汤姆逊膨胀过程相似。
dq It's an ideal gas in adiabatic expansion 0 dq is equal to zero.
说明,等于。
So the Joule free expansion involves opening this valve and asking what happens when this gas moves into the other bulb or distributes between the two.
焦耳自由膨胀就是,打开阀门后的过程,气体从一个腔跑到另一个腔,并在它们之间平均分配。
What happened to the temperature in a Joule expansion in ideal gas?
对理想气体,焦耳-汤姆逊膨胀过程中温度如何变化?
So expansion work, for instance, or compression work, is if you have a piston with a gas in it. All right, you put a pressure on this piston here, and you compress the gas down. This is compression work.
力乘以距离,就是功,功有许多种:,电可以做功,驱动电机与电风扇,磁力也可以做功。
And here, in an isothermal expansion, The bath is putting back the energy that the gas is expanding or using to expand, and so the energy is flowing back into the gas through the environment in the isothermal expansion.
而在等温膨胀中,恒温环境将气体膨胀对外做功,而损失的能量又返还回来,在等温膨胀中,能量从环境,流向系统。
应用推荐