Anesthesia gas and supply system | Physics gas cylinder

‪@AnesthesiaandCriticalcare‬ In this part 1, we discuss about cylinder physics like gauge and absolute pressure, units of measuring pressure and types of compressed gas. The liquefied and non liquefied gas basics are taught. More importantly, the method to measuring cylinder volume using conversion factor, boyles law and Avogadro's hypothesis is presented with examples. this past is followed by part 2. Cylinder anatomy from the same playlist.

[@tomcruise9317]

Then hpw n20 become a gas if it is in liquid and temp is 30

[@AnesthesiaandCriticalcare]

Liquid nitrous oxide in pressurized cylinders is in equilibrium with the gaseous form at 745 pounds per square inch gauge. as the vapour is being used up, additional liquid is vaporized to maintain that same pressure untill 75 % of the content is used...without pressure, the nitrous oxide is also a gas like oxygen. But since it is pressurized in the cylinder, it partially gets luquified. To completely liquify we either need to reduce the temperature or increase the pressure...hope this helped..

[@tomcruise9317]

Thanks mam flow rate at low presure system we can adjust..so normally how much rate we keep mam also a normal human if he breath what his his flow rate

[@AnesthesiaandCriticalcare]

I didn't full get your question but from what I understand ...norma healthyl human breath at 12 per minute at tidal volume of about 500 ml..so our normal flow is about 500ml per breath or 6 liters per minutes...you should know that is all from our own respiratory effort (negative pressure breathing). Our body incredibly adjust that flow rate.for example , during exercise , our respirary system works more thereby increasing the flow rate..same happen during illness...apart from that flow rate also changes based on certain external factors like atmospheric pressure and oxygen concentration like in high altitude or deep sea diving...there is sth call alvoelar oxygen equation that determines that.
Duing illness, we just supplement what our respiratory system is already doing either with providing extra concentration or flow using pressure....when we use pressure, we normally intubate or use cpap mask and our breathing changes from negative pressure to positive pressure...if you learn about mechanical ventilation and oxygen delivery devices like facemask, rebreather and non reberether ,you will get better idea...

[@tomcruise9317]

@@AnesthesiaandCriticalcare thank for responding and answering mam really helpfull mam....

[@tomcruise9317]

@@AnesthesiaandCriticalcare mam lets take 200psi cylinder now i m providing 6lit o2 per min ,,,,also 500psi setup but
6lit of o2 per min. after 1 min cylinder pressure will reduse lets, it is190psi for one and 490psi for 2....... so what i am asking is pt 1 got 6lit and pt 2 got 6lit .. what is the differwnce here mam both got 6lit per min..