Final answer:
The compressor's ratio of absolute discharge pressure to absolute suction pressure is known as the pressure ratio. This concept, involving gauge pressure and atmospheric pressure, is crucial for assessing compressor efficiency.
Step-by-step explanation:
The ratio of the absolute discharge pressure to the absolute suction pressure is referred to as the compressor's pressure ratio. In the context of hydraulic and pneumatic systems, absolute pressure is defined as the sum of gauge pressure and atmospheric pressure.
The concept of absolute pressure is critical in understanding the behavior of gases and fluids under various conditions. This ratio is essential for determining the compressor's efficiency and performance.
Considering Bernoulli's principle and other fluid dynamics concepts, it is imperative to differentiate between gauge pressure and absolute pressure. Gauge pressure is the pressure relative to atmospheric pressure, and it may be positive or negative depending on whether it's above or below atmospheric pressure.
Absolute pressure, which is relevant here, is the total pressure experienced by a system and is especially important in compressor calculations.