Basic Documentation
Table Of Contents
- About this Application Guide
- Chapter 1–Introduction
- Chapter 2–Goals of the Laboratory Environment
- Chapter 3–Unique Ventilation Needs of a Laboratory Facility
- Chapter 4–Ventilation Systems Classification
- Chapter 5–Laboratory Facility Exhaust Systems
- Chapter 6–Laboratory Containment Units - Ventilation
- Chapter 7–Room Ventilation, Makeup Air, and Pressurization Control Systems
- Chapter 8–Laboratory Temperature and Humidity Control Systems
- Chapter 9–Laboratory Emergencies - Ventilation System Response
- Chapter 10–Laboratory Ventilation System - Validation
- Chapter 11–Laboratory Ventilation System - Commissioning
- Glossary
- Index
Purpose of this Guide
Chapter 4–Ventilation Systems Classification..........................................................................13
Types of Ventilation Systems ...................................................................................................13
CAV Systems ......................................................................................................................... 13
Two-position CAV................................................................................................................ 15
VAV Systems .........................................................................................................................15
Choice of Ventilation System.................................................................................................... 17
Chapter 5–Laboratory Facility Exhaust Systems .....................................................................19
Laboratory Exhaust Air ............................................................................................................. 19
Exhaust Systems Overview ................................................................................................... 20
Configuration.......................................................................................................................... 20
Individual Exhaust Systems................................................................................................. 21
Centralized Exhaust Systems.............................................................................................. 22
Exhaust System Expansion...................................................................................................... 23
Exhaust System Energy Recovery ........................................................................................... 24
Cleaning Systems for Exhaust Air ............................................................................................ 24
Proper Exhaust System Functionality....................................................................................... 25
Centralized Exhaust Systems with Constant Volume Fans ..................................................... 27
One Position CAV System Applications................................................................................. 28
Two Position CAV System Applications................................................................................. 28
VAV Applications.................................................................................................................... 28
General System Applicability ................................................................................................. 29
Centralized Exhaust Systems Using Variable Air Volume Fans............................................ 29
Exhaust System Discharge....................................................................................................... 32
Exhaust System Stacks - Height, Location and Exit Velocity ................................................ 32
Stack Diameters and Exit Velocity....................................................................................... 33
Exhaust Stack Airflow Velocity Calculations ....................................................................... 33
Laboratory Exhaust Systems - General Requirements............................................................ 36
Exhaust System Materials...................................................................................................... 36
Stainless Steel..................................................................................................................... 36
Galvanized Steel.................................................................................................................. 36
PVC .....................................................................................................................................36
FRP (Fiberglass Reinforced Polyester)............................................................................... 37
Epoxy and Teflon Coated Materials .................................................................................... 37
Exhaust System Configuration............................................................................................... 37
Transport Velocity .................................................................................................................. 37
Fire Dampers.......................................................................................................................... 38
Maintenance Access.............................................................................................................. 38
Specialty Exhaust Systems ......................................................................................................38
Perchloric Acid Fume Hoods.................................................................................................. 38
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