Question

What is meant by suction pressure?

Answer 1

Hint: Suction pressure is a negative difference in pressure between two places that causes a gas or liquid to be drawn from a higher to a lower pressure condition. Transducers for Suction Pressure To measure suction range pressures, choose suction pressure transducers having a voltage output.

Complete answer:
The suction pressure (also known as the low-side pressure) is the intake pressure generated by the system compressor while it is functioning in refrigeration and air conditioning systems. The correct refrigerant charge in a system is determined by the suction pressure, as well as the suction temperature and the wet-bulb temperature of the discharge air. The diffusion pressure of a solute lowers when it is dissolved in water. Diffusion pressure deficit is the difference between pure water and solution diffusion pressure (DPD).

When a plant cell is placed in a hypotonic solution, water enters the cell by osmosis, causing turgor pressure to develop in the cell.

The cell membrane becomes stretched, and the cell's osmotic pressure drops. The Turgor Pressure rises as the cell absorbs more water, whereas the Osmotic Pressure falls. When a cell is entirely turgid, the OP equals the TP and the DPD equals zero. Turgid cells are unable to absorb any further water. In terms of plant cells, the DPD can be defined as a cell's true hunger for water, and it can be stated as DPD=OP-TP.

When DPD reaches zero, water will no longer be able to enter. Thus, DPD tends to equate and depicts a cell's ability to absorb water; it is also known as suction force (SF) or suction pressure (SP).

Suction force is a force that plants utilise to transport water (with dissolved minerals) to their leaves. This force is formed when leaves experience low pressure owing to transpiration while roots experience high pressure.

Note: Because of the ongoing process of transpiration in the plant body, transpiration pull is a physiological phenomenon that can be defined as a force that operates against the direction of gravity in plants. This force aids in the transport of water and the minerals dissolved in it to the plants' upper portions.