X

CPC meaning in Academic & Science ?

( 5 )  .  1 Rating
1606 views   .  0 comments  .   . 

Download Solution PDF

Answer: What is Condensation Particle Counter mean?

A condensation particle counter or CPC is a particle counter that detects and counts aerosol particles by first enlarging them by using the particles as nucleation centers to create droplets in a supersaturated gas.

Three techniques have been used to produce nucleation:

Adiabatic expansion using an expansion chamber. This was the original technique used by John Aitken in 1888. Thermal diffusion.Mixing of hot and cold gases.

The most usually used (also the most efficient) method is cooling by thermal diffusion. Most abundantly used working fluid is n-butanol; during last years water is also encountered in this use.

Condensation particle counters are able to detect particles with dimensions from 2 nm and larger. This is of special importance because particles sized down from 50 nm are generally undetectable with conventional optical techniques. Usually the supersaturation is ca. 100…200 % in condensation chamber, despite the fact that heterogeneous nucleation (droplet growth on surface of a suspended solid particle) can occur at supersaturation as small as 1 %. The greater vapour content is needed because, according to surface science laws, the vapour pressure over a convex surface is less than over a plane, thus greater content of vapor in air is required to meet actual supersaturation criteria. This amount grows (vapor pressure decreases) along with decrease in particle size, the critical diameter for which condensation can occur at the present saturation level is called Kelvin diameter. The supersaturation level must, however, be small enough to prevent homogeneous nucleation (when liquid molecules collide so often that they form clusters – stable enough to ensure further growth is possible), which will produce false counts. This usually starts at ca. 300 % supersaturation.

Operation of a diffusional thermal cooling CPC is depicted on the right. Air passes through a hollow block of porous material in contact with the working liquid, the block being heated to ensure high vapour content. Then the humified air enters the cooler where nucleation occur. Temperature difference between the heater and the cooler determines the supersaturation, which in its turn determines the minimal size of particles that will be detected (the greater the difference, the smaller particles get counted). As proper nucleation conditions occur in the center of the flow, sometimes incoming flow is divided: most of it undergoes filtering and forms the sheath flow, which the rest of flow, still containing particles, is inserted into via a capillary. The more uniform is obtained supersaturation, the sharper is particle minimal size cutoff. During the heterogeneous nucleation process in the nucleation chamber, particles grow up to 10…12 μm large and so are conveniently detected by usual techniques, such as laser nefelometry (measurement of light pulses scattered by the grown-up particles).

reference
Full Form Category
Colegio de Psicólogos de Chile Academic & Science
College Preparatory Curriculum Academic & Science
College of Psychologists of Chile Academic & Science
Central Penn College Academic & Science
Cogswell Polytechnical College Academic & Science
Climate Prediction Center Academic & Science
Condensation Particle Counter Academic & Science
Customer Profit Contribution Accounts and Finance
San Martin Delos Andes Airport Code
Canadian Peace Congress Associations & Organizations
Cheque Processing Centre Banking
Cost Per Click Business
Contract Pharmacal Corp Business
Copy Products Company Business
Cost Per Conversion Business
Computer Press Control Business
Client Partner Competitor Business
Convenience Point Card Business
Canadian Pork Council Business
Cooperative Patent Classification Business
Construction Products Certification Business
Certified Professional Counselor Business
Capcon Holdings Business
Central Packaging Corporation Business
Combined Products Corporation Business
Canada Post Corporation Business
Caspian Pipeline Consortium Business
Consumers Power Company Business
Colder Products Company Business
Community Preservation Corporation Business
Central Police Canteen Central Police Organisation
Continued Professional Certification Certifications
Certified Professional Constructor Certifications
Certificate of Professional Competence Certifications
Certified Photographic Consultant Certifications
Certified Professional Consultant Certifications
Cetyl-pyridinium Chloride Chemistry
Casas Por Christo Community
Church Periodical Club Community
Christ Presbyterian Church Community
Central Peninsula Church Community
Community Presbyterian Church Community
Child-Parent Centre Community
Clean Plate Club Community
Committee for Programme and Coordination Community
Child Prosecution Committee Community
Community Planners Committee Community
Counselling Pregnancy Centre Community
Community Partnerships Center Community
Cooperation With the Professional Community Community
Community Partnership for Children Community
Celebrity Picture Community Community
Concordant Publishing Concern Community
Casas Por Cristo Community
Carolina Population Center Community
Collective Purchasing Conference Community
Conference Planning Committee Community
Connected Pakistan Conference Community
Continuing Professional Competency Community
Children's Personal Conduct Community
Circuit Protective Conductor Computer Hardware
Computer Policies Committee Computing
Color Personal Computer Computing
Computing Center Computing
Computer Process Control Computing
Central Processing Center Computing
Command Per Clock Computing
Computer Prompting and Captioning Computing
Central Processor Complex Computing
Card Programmed Calculator Computing
Channel Processor Card Computing
Constant Power Control Computing
Calling Party Category Computing
Certified Professional Credential Computing
Collaborative Product Commerce Computing
Cisco Provisioning Center Computing
Call Progress Characterization Computing
Central Product Classification Computing
Circuit Provisioning Center Computing
Compare with Carry Computing
Continuous Packet Connectivity Computing
Cyberarmy Privacy Commission Computing
Cybersecurity Preparedness Consortium Computing
Cyber Policy Centre Computing
Cyber Professional Courses Computing
Coding Potential Calculator Computing
Computer and Programming Club Computing
Collegiate Programming Contest Computing
Coins Per Click Computing
Colour Personal Computer Computing
Computer Physics Communications Computing
CryptoPlants Club Cryptocurrency
CPChain Cryptocurrency
College Preparatory Program Educational Institute
College Preparatory Center Educational Institute
Commands Per Clock Cycle Electronics
Cartesian Perceptual Compression Compressed Image File Type
Corrosion Preventive Compound General
Camshaft Position Control General
Clutch Pressure Control General
Compact Passenger Car General
Common Powertrain Control General
Chevrolet Pontiac Canada General
Camera Parking Control General
Car Parking Charges General
Comprehensive Primary Care General
Connect Power Control General
Center for Palliative Care General
Center for Primary Care General
Combined Precision Components General
Corrosion Prevention Control General
Create Play Connect General
Cerebral Performance Categories General
Crop Protection Compendium General
Cloud Privacy Check General
Continuous Process Control General
Cabin Pressure Controller General
CAGE Plate Carrier General
Client Procedures Circulars General
Chicago Printmakers Collaborative General
Charged Pudding Cannon General
Challenging Peoples Curriculum General
Critical Parts Code General
Chrysler Philippines Corporation General
Canister Purge Control General
Common Platform Controller General
Campro Club General
California Pony Cars General
Coil Per Cylinder General
Classic Performance Cars General
Cianjur Peugeot Club General
Cirebon Peugeot Club General
Certified Professional Chemist General
Chemical Protective Clothing General
Commission on Professional Credentialing General
Central Pay Commission General
Color Point Carrier General
Community Police Commission General
Counts Per Channel General
City Plan Commission General
Command Per Cycle General
City Planning Commission General
Colour Point Carrier General
Champneys Pink Cluster General
The Communist Part Of China General
Congressional Progressive Caucus General
Consortium Puente Chacao General
Construction Progress Coalition General
Child Protection Council Governmental
Case Processing Centre Governmental
Communist Party of Canada Governmental
Canadian Progressive Conservatives Governmental
Centralized Processing Centre Governmental
Civil Procedure Code Governmental
Century Percent Club Governmental
Child Protection Center Governmental
Commune People's Comittee Governmental
Community Partnership Council Governmental
Concrete Polishing Council Governmental
Communist Pro-Chinese Governmental
Compliance Policy Council Governmental
Constant Pressure Control Governmental
KANPUR CENTRAL G/SH Indian Railway Station
Cost Per Clickthrough Internet
Church- Planting Coordinator Jobs
Certified Personnel Consultant Jobs
Certified Professional Coder Jobs
Certified Pastry Cook Jobs
Certified Pension Consultant Jobs
Certified Professional Coach Jobs
Chromosomal Passenger Complex Medical
Complete Primary Care Medical
clinical-Pathological Conference Medical
Cerebral Palsy Clinic Medical
Chest Pain Center Medical
Clinical Pathology Conference Medical
Cerebral Performance Category Medical
cerebropedal commissure Medical
Choroid Plexus Calcification Medical
Chronic Passive Congestion Medical
Circumferential Pneumatic Compression Medical
clinicopathological conference Medical
Complex Partial Crises Medical
Confidential Personal Code Medical
Cost Per Case Medical
Crisis Pregnancy Center Medical
Choroid Plexus Cyst Medical
Carotid Pulse Curve Medical
Central Posterior Curve Medical
Casualty Prevention Circular Medical
Clinical Psychology Center Medical
Cells Per Colony Medical
Clinical Pathological Case Medical
Cyclophotocoagulation Medical
Centrifugal Partition Chromatography Medical
Choroid Plexus Carcinoma Medical
Clogged Poop Chute Messaging
Cost Per Copy Messaging
Control Processing Center Military and Defence
Combat Psychiatric Casualty Military and Defence
Computer Print Control Networking
Charged Particle Cannon Physics Related
Constant Power Crossover Radio Science
San Martin de Los An, NE, Argentina Regional
Cocoa Purchasing Company Regional
Cheating Party of Canada Regional
Cache Poisoning Checker Softwares
Central Planning Center Space Science
Characteristics Properties Code Space Science
Computer Program Component Space Science
Canadian Paralympic Committee Sports
Continous Packet Compression Telecommunication
Crosstalk Prevention Coding Telecommunication
Calling Party Control Telecommunication
Aviador Carlos Campos Airport Transport & Travel

Take Quiz To Earn Credits!

Turn Your Knowledge into Earnings.




Give Rating
Report
Write Your Comments or Explanations to Help Others
Comments(0)





Miscellaneous in Academic & Science
Miscellaneous in Academic & Science

Ever curious about what that abbreviation stands for? fullforms has got them all listed out for you to explore. Simply,Choose a subject/topic and get started on a self-paced learning journey in a world of fullforms.

Explore Other Libraries

X

Important Academic & Science Links





Copyright (c) 2021 TuteeHUB

OPEN APP
Channel Join Group Join