Question

Why soil suction increases with decrease in water content?

Answer 1

Explanation:

The increase in air pressure (matric suction) causes the soil pore-water to expel into the porous disk which decreases the water content of the sample.

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Answer 2

Answer:

In refrigeration and air conditioning systems, the suction pressure' is the intake pressure generated by the system compressor while operating. The suction pressure, along with the suction temperature and the wet bulb temperature of the discharge air are used to determine the correct refrigerant charge in a system.