Helium concentration calculation
Thread Content
Nitrogen is introduced into the heat exchanger until the pressure reaches 0.4 MP (gauge pressure), after which the nitrogen supply is turned off and helium is introduced to bring the pressure in the heat exchanger to 0.5 MP (gauge pressure). Before nitrogen is filled in, the heat exchanger is at atmospheric pressure and contains air. May I ask what the helium concentration is? What is the helium partial pressure?
Don’t you know how to calculate this yet? Treat them all as ideal gases. The device contains 1 part of air, then 4 parts of nitrogen, and finally 1 part of helium; in total there are 6 parts of gas, with helium accounting for 1 part. Can you do it by yourself? Also, write the Chinese characters and words correctly so that it is not difficult for others to understand.
Nitrogen is filled into the heat exchanger up to 0.4 MP (gauge pressure); thus, the pressure in the heat exchanger reaches a maximum of 0.4 MP (gauge pressure). Since the pressure is not high, the nitrogen concentration and partial pressure are calculated using the ideal gas law