The three statements below all refer to standard single-barrel reverse flow cyclones used to remove particulate matter from air. For each statement, indicate whether it is True or False and explain your reasoning. a) Ifa cyclone has a collection efficiency of 25% for a specific-sized particle, then it can be expected always to have a collection efficiency of 50% if the particle size doubles, assuming all else remains constant. b) If a cyclone has a collection efficiency of 25% for a particle having a specified density, then it can be expected always to have a collection efficiency of 50% if the particle density doubles, assuming all else remains constant. c) To a single decimal place, the effective number of turns made in traversing a standard cyclone is always 37.7, independent of the cyclone size and air flow rate into the cyclone.
The three statements below all refer to standard single-barrel reverse flow cyclones used to remove particulate matter from air. For each statement, indicate whether it is True or False and explain your reasoning. a) Ifa cyclone has a collection efficiency of 25% for a specific-sized particle, then it can be expected always to have a collection efficiency of 50% if the particle size doubles, assuming all else remains constant. b) If a cyclone has a collection efficiency of 25% for a particle having a specified density, then it can be expected always to have a collection efficiency of 50% if the particle density doubles, assuming all else remains constant. c) To a single decimal place, the effective number of turns made in traversing a standard cyclone is always 37.7, independent of the cyclone size and air flow rate into the cyclone.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The three statements below all refer to standard single-barrel reverse flow cyclones used
to remove particulate matter from air. For each statement, indicate whether it is True or False and
explain your reasoning.
a) If a cyclone has a collection efficiency of 25% for a specific-sized particle, then it can be
expected always to have a collection efficiency of 50% if the particle size doubles, assuming
all else remains constant.
b) If a cyclone has a collection efficiency of 25% for a particle having a specified density, then it
can be expected always to have a collection efficiency of 50% if the particle density doubles,
assuming all else remains constant.
c) To a single decimal place, the effective number of turns made in traversing a standard cyclone
is always 37.7, independent of the cyclone size and air flow rate into the cyclone.
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