Calculating Delta P in Vacuum Chambers: P1 or 0?

In summary, the conversation is discussing the calculation of delta p in vacuum chambers and whether or not the equation is applicable when there is no air present. The person is asking for clarification on whether p1 should be substituted with 0 or if the equation is invalid without air. They also use the example of shaking a cola can in a vacuum chamber and the driving force being zero due to the absence of delta p. The conversation ends with a question about whether p1, p2, and delta p should all be assumed to be zero without air.
  • #1
ahmed11
83
0
in calculating the delta p in vacuum chambers do we substitute p1 with 0 or the whole equation doesn't exist if air doesn't exist?
 
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  • #2
Could you elaborate on what it is that you are exactly talking about?
 
  • #3
CrazyNinja said:
Could you elaborate on what it is that you are exactly talking about?
i mean if we shook a cola can in vacuum chamber then the driving force when opened will be zero because there is no delta p. right?
without air then there won't be delta p.
or we assume that p 1 is equal to p2 is equal to zero?
do you get what i mean
 
  • #4
Why do you think there is no ΔP? (In case you are wondering, there is a "symbols" section in the text from where you can get a "Δ" ). The cola bottle is packed with high pressure and the pressure outside is close to zero.
 

Related to Calculating Delta P in Vacuum Chambers: P1 or 0?

1. What is Delta P in a vacuum chamber?

Delta P, or pressure difference, is the difference in pressure between two points in a vacuum chamber. It is typically measured in units of pressure, such as Pascal (Pa) or Torr.

2. How is Delta P calculated in a vacuum chamber?

The formula for calculating Delta P in a vacuum chamber is P1 - 0, where P1 is the pressure at the first point and 0 is the pressure at the second point. This assumes that the pressure at the second point is zero, which is often the case in vacuum chambers.

3. Why is Delta P important in vacuum chambers?

Delta P is important because it directly affects the behavior and performance of the vacuum chamber. It can impact the rate of gas flow, the ability to maintain a vacuum, and the overall efficiency of the chamber.

4. How do you measure Delta P in a vacuum chamber?

Delta P can be measured using a pressure gauge or sensor at each point in the chamber. The difference between the two readings will give you the Delta P value.

5. What factors can affect Delta P in a vacuum chamber?

Some factors that can affect Delta P in a vacuum chamber include the type and amount of gas present, the temperature, the type of material used in the chamber, and any leaks or other sources of pressure variation. Proper maintenance and calibration can help minimize these factors and maintain a consistent Delta P in the chamber.

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