logo

Local Exhaust Ventilation (LEV) Systems: Design, Maintenance, and Inspection

Design, Operation and maintenance of local exhaust ventilation systems

25 Pages764 Words370 Views
   

Added on  2023-05-30

About This Document

This presentation covers the main features, types, and proper design considerations for Local Exhaust Ventilation (LEV) systems. It explains the characteristics of contaminants, key parameters influencing effective operation, and typical sources of contaminants. It also discusses the impact of enclosure design, flow rate, and capture velocity. The presentation provides examples of enhanced designs and recommended designs from ACGIH ventilation manual. It concludes with guidance for periodic inspection and maintenance.

Local Exhaust Ventilation (LEV) Systems: Design, Maintenance, and Inspection

Design, Operation and maintenance of local exhaust ventilation systems

   Added on 2023-05-30

ShareRelated Documents

LOCAL EXHAUST
VENTILATION (LEV)
SYSTEMS
Local Exhaust Ventilation (LEV) Systems: Design, Maintenance, and Inspection_1
Outline
Ventilation systems approaches
Main features
Proper design considerations for local
ventilation
Maintenance and inspection
Local Exhaust Ventilation (LEV) Systems: Design, Maintenance, and Inspection_2
Main types of Ventilation
General/Dilution
o Control of heat and/or contaminants removal
o Also called dilution ventilation
o Used in controlling contaminants only in cases local
exhaust cant work
o Uneconomical and ineffective
Local ventilation
o Traps contaminants at source
o Is a preferred control method because:
o more economical
o more effective
Local Exhaust Ventilation (LEV) Systems: Design, Maintenance, and Inspection_3
Local Exhaust Ventilation (LEV)
Characteristics of contaminants:
o particle speed
o source directionality
o gas/fume particles
o particle size
o temperature
o An ideal solution for one is impractical in another
o The solution has to be suited to source
Local Exhaust Ventilation (LEV) Systems: Design, Maintenance, and Inspection_4
Typical sources of contaminants
Local Exhaust Ventilation (LEV) Systems: Design, Maintenance, and Inspection_5
Typical sources of
contaminants
Local Exhaust Ventilation (LEV) Systems: Design, Maintenance, and Inspection_6

End of preview

Want to access all the pages? Upload your documents or become a member.

Related Documents
Local exhaust ventilation (lev) system PDF
|25
|711
|81

local exhaust ventilation (lev) system PDF
|18
|3537
|156