What considerations should be taken into account when designing pumps and fans for high-altitude areas?
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There is a project at an altitude of around 3600 meters; I wonder what differences exist in the design of the pumps and fans used there?
1. Generally, the problem with the pump is not too serious; it mainly relates to the relationship between gauge pressure and absolute pressure, with cavitation being another issue. 2. The capacity of the fan is specified based on the suction capacity at the inlet; it is not a nominal value, but rather the actual capacity under real atmospheric conditions. The lower the air pressure, the larger fan is required, and the fan’s delivery capacity is higher in winter than in summer (as air pressure is lower in summer).
Does it mean that the difference between gauge pressure and absolute pressure can change? Does cavitation occur more easily under low-pressure conditions? Why?