Why is countercurrent more efficient than co-current?

As a general choice, counter-current (or “counter-flow”) heat exchangers are more efficient because they poise the highest overall temperature differences across the process fluids. This is the goal of all heat transfer, to maximize temperature differences for the greatest amount of time in the process.

Is countercurrent flow more efficient than concurrent?

By contrast, counter flow is significantly more efficient and, depending on the flow rate and temperature, the heat transfer performance could be up to 15\% more efficient, possibly enabling a smaller heat exchanger to be used, saving space and money!

What is the difference between cross current and countercurrent?

solid fluid operation generally performed in cross current pattern. co-current flow is the flow in which both the fluid streams enter the equipment in the same direction whereas for in the counter-current flow the streams enter at opposite ends of the equipments.

When counter-current extraction is used?

A method of multiple liquid-liquid extractions is countercurrent extraction, which permits the separation of substances with different distribution coefficients (ratios). A clever design known as Craig apparatus is used for this purpose (Lyman C. Craig, 1943).

Which is better counter current or co-current?

The maximum amount of heat or mass transfer that can be obtained is higher with countercurrent than co-current (parallel) exchange because countercurrent maintains a slowly declining difference or gradient (usually temperature or concentration difference).

What is the most efficient heat exchanger?

Plate exchanger is the most efficient due to turbulent flow on both sides. High heat-transfer coefficient and high turbulence due to even flow distribution are important. However, a plate heat exchanger regenerator is restricted to low viscosities. Plate exchangers fulfill these requirements best.

Which is better co-current or counter current?

Overall, the counter-current heat exchanger is more efficient compared to the co-current heat exchanger, and is more widely used in the chemical process industry.

Which is better counter-current or co current?

How is countercurrent liquid liquid extraction different from normal liquid liquid extraction?

In contrast to a sequential liquid–liquid extraction, in which we repeatedly extract the sample containing the analyte, a countercurrent extraction uses a serial extraction of both the sample and the extracting phases.

What are the important properties of a good solvent for extraction process?

Not toxic, not flammable.

• Immiscible pair of solvents: water and low polarity organic solvents.
• Good solubility of the target compound.
• Poor solubility of impurities.
• Volatility of the extraction solvent.
• Toxicity and safety properties of the extraction solvent.