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What is positive pressure, and what is negative pressure? What are their differences?
Release time:
2021-01-26
The use of positive pressure is commonly encountered in industrial applications, particularly when selecting miniature pumps (such as miniature booster pumps, miniature air pumps, miniature inflation/deflation pumps, miniature gas circulation pumps, miniature inflation pumps, miniature charging pumps, etc.).
Positive pressure is a gaseous state where the gas pressure is higher than atmospheric pressure.
Negative pressure is a gaseous state where the gas pressure is lower than atmospheric pressure.
Difference:
1. Different functions
Positive pressure refers to a gaseous state where the gas pressure is higher than atmospheric pressure (commonly referred to as one atmosphere). For example, when inflating bicycle or car tires, the outlet of the air pump produces positive pressure.
Negative pressure is a gaseous state where the gas pressure is lower than atmospheric pressure (commonly referred to as one atmosphere).
2. Different applications
Positive pressure is commonly used in industry, particularly in the selection of micro-pumps (such as micro-boost pumps, micro-air pumps, micro-air pumps, micro-gas circulation pumps, micro-air pumps, micro-inflation pumps, etc.). This concept is often involved.
The utilization of negative pressure is very common. People often create a negative pressure state in a certain space to utilize the ubiquitous atmospheric pressure for efficiency.
3. Different transmission power
Experiments on gas transmission using positive pressure with different lengths of tubes, and the experimental and theoretical calculation results show that: the positive pressure transmission power is 4 to 3 times that of the negative pressure transmission power. Using positive pressure gas transmission not only shortens the gas transmission time but also ensures that the gas concentration remains unchanged. The data measured by the positive pressure tube can truly reflect the natural spontaneous combustion state of coal.
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