Bissoy.com
Doctors Medicines MCQs Q&A

The renowned equation used to calculate the pressure drop in a non-ideal packed bed is known as______________

The renowned equation used to calculate the pressure drop in a non-ideal packed bed is known as______________ Correct Answer Ergun Equation

The Ergun equation expresses the friction factor as the Reynolds number and is commonly used to calculate the pressure drop in packed beds having non laminar flow regime.

Related Questions

Bed bugs are parasitic insects in the genus Cimex that feed exclusively on blood. Cimex lectularius, the common bed bug, is the best known as it prefers to feed on human blood. The name bed bug derives from the preferred habitat of Cimex lectularius: warm houses and especially near or inside beds or other sleep areas. Bed bugs are mainly active at night, but are not exclusively nocturnal. They usually feed on their hosts without being noticed. A number of adverse health effects may results from bed bug bites, including skin rashes, psychological effects, and allergic symptoms. Bed bugs are not known to transmit any pathogens as disease vectors. Certain signs and symptoms suggest the presence of bed bugs; finding the adult insects confirms the diagnosis. Assuming the information in the given paragraph is true, choose the correct statement.
A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle system (in SI units) is given below:
Δ P/L = 375 × 103 VOM + 10.94 × 106 V2OM (SI units)
If water is to be used as the fluidising medium, in actual operation, the above bed has a height = 1 m. What is the porosity of the fluidised bed?
Bed pressure drop in an air fluidised bed of catalyst particles (ρp = 200 kg/m3, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is
A gas (density = 1.5 kg/m3, viscosity = 2 × 10-5 kg/m.s) flowing through a packed bed (particle size = 0.5 cm, porosity = 0.5) at a superficial velocity of 2 m/s causes a pressure drop of 8400 Pa/m. The pressure drop for another gas, with density of 1.5 kg/m3 and viscosity of 3 × 10-5 kg/m.s flowing at 3 m/s will be
Kelly and Chris packed several boxes with books. If Chris packed 60 percent of the total number of boxes, what was the ratio of the number of boxes Kelly packed to the number of boxes Chris packed?
If "blanket" is called "towel","towel" is called "bed sheet", "bed sheet" is called "pillow" ,"pillow" is called "bed" and "bed" is called "table". What is used to cover bed?
The statements below are followed by two conclusions labeled I and II. Assuming that the information in the statements is true, even if it appears to be at variance with generally established facts, decide which conclusion(s) logically and definitely follow(s) from the information given in the statements. Statements: All bed is bed sheet. No bed is blanket. Some blanket is comforter Conclusion I: No comforter is bed. Conclusion II: Some blanket is bed sheet.
Read the given statements and conclusions carefully and decide which of the conclusions logically follow(s) from the statements. Statements: John is a renowned sportsperson. All renowned sportspersons are fit and active. John earns a large amount every year through advertisements of various products. Conclusions: A. All renowned sportspersons earn large amount through advertisements. B. John is fit and active. C. John being popular advertises only famous products.
Pressure drop in a fluidised bed reactor is __________ that in a similar packed bed reactor.
A fully packed bed with small particle size has _________ pressure drop than a bed with larger particle size.