Download Lab Vent Optimization - Exposure Control Technologies

Safe, Dependable and Energy Efficient Laboratories
December 2014
Lab Safety & Energy Optimization
Determining Appropriate
Airflow Specifications for VAV Fume Hoods
Thomas C. Smith
Exposure Control Technologies, Inc.
919-319-4290
[email protected]
12 - 14
Introduction & Agenda
Thomas C. Smith
–
President, Exposure Control Technologies, Inc.
–
BSME (NCSU), MSEE – Industrial Hygiene (UNC-CH)
–
Chair, AIHA/ANSI Z9 Health and Safety Standards
–
Chair, ASHRAE TC 9.10 – Laboratory Systems
–
Vice Chair, ASHRAE/ANSI 110
VAV Fume Hoods
– Purpose of a Fume Hood
– Design and Operation of VAV Fume Hoods
– Establishing Appropriate Operating Specifications
– Testing and Verifying Performance
– Managing Performance
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
1
Safe, Dependable and Energy Efficient Laboratories
December 2014
Exposure Control Technologies, Inc.
Services for Research Facilities
• Lab Ventilation Consulting
• Support Energy and GHG Reduction
• Laboratory Hood Testing & Commissioning Support
• Lab Ventilation Management Programs
Laboratory Hood Products
A Division of ECT, Inc.
• Fume Hood Upgrades
• Hood Testing Equipment
• Testing Software
12 - 14
Common Objectives for Research Facilities
• Attract & retain top research talent
• Promote high quality research
• Provide safe & productive environments
• Minimize energy use & operating costs
• Maximize environmental sustainability
• Comply with codes & standards
• Manage & mitigate risk
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
2
Safe, Dependable and Energy Efficient Laboratories
December 2014
Safe, Energy Efficient & Sustainable Labs
Optimize
Safety & Energy
Efficiency
Safe
Efficient
&
&
Productive
Sustainable
● Common Objectives ● Realistic Goals
Teamwork
12 - 14
Laboratory Hoods &
Ventilation Systems
Laboratory Utilities ≈ $5 to $20 per sq. ft.
Lights
STACK
FILTER
FAN
10%
HVAC
60%
30% Plug/Misc.
ROOF
DUCTS
Lab HVAC
AIR ≈ $3 to $9 per cfm-yr
SUPPLY
Fume hoods are
the predominant
devices used to
protect laboratory
personnel
DOE estimates ≤ 50% of building energy is
wasted by inefficient and ineffective HVAC
Fume hoods typically require the most
airflow
THINK
SAFETY
15% - 30% of fume hood systems may not
meet ANSI standards for performance
LAB
OFFICE
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
3
Safe, Dependable and Energy Efficient Laboratories
December 2014
Airborne Hazards in Laboratories
Potential for Adverse Health Effects
Inhalation Hazards
Types of Materials
Toxicity
Generation Rate
Concentration
Duration of Exposure
Physical Hazards
Dermal Exposure
Fire & Explosion
12 - 14
Purpose of a Fume Hood:
Protect People
Contain, Capture and Remove
Hazardous Airborne Effluent
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
4
Safe, Dependable and Energy Efficient Laboratories
December 2014
Laboratory Ventilation Standards
ANSI/AIHA Z9.5 - 2012
ASHRAE 110 - 1995 (ASHRAE 110 – 2015?)
NIH, EPA
SEFA, NEBB
PWGSC, EN14175
12 - 14
Evaluating Fume Hood Safety & Performance
ANSI/ASHRAE 110 “Method of Testing Performance of Laboratory Fume Hoods”
Mannequin
Tracer
Gas
Ejector
Evaluate Operating Conditions
•
•
•
•
Hood and Lab Inspection
Computer
&
DAQ
Face Velocity Measurements
Cross Draft Velocity Tests
VAV Response and Stability
Evaluate Performance (Containment )
•
•
Tracer
Gas
Detector
Flow Visualization Smoke Tests
Face
Velocity
Probe
Cross Draft
Probe
Tracer Gas Containment Tests
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
5
Safe, Dependable and Energy Efficient Laboratories
December 2014
Laboratory Hood Safety & Performance
ECT, Inc. has conducted more than 30,000
ASHRAE 110 Tracer Gas Containment Tests
Results Demonstrate 15% - 30% Failure
Primary Factors Affecting Performance
• Hood design - 20%
• Lab Design
• System Operation
55%
• Work practices - 25%
12 - 14
Lab Ventilation Airflow Specifications
Demand for Ventilation
Minimum Flow and Range of Modulation Required to Meet
the Functional Requirements of the Lab
•
Safety
– Hood Exhaust Flow
– Laboratory Pressurization
– Dilution (ACH)
•
Comfort & Productivity
– Temperature
– Humidity
•
Occupancy & Utilization
Variable Air Volume (VAV) Systems
modulate flow to meet the changing demand for ventilation
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
6
919-319-4290
www.exposurecontroltechnologies.com
Average
Exposure Control Technologies, Inc.
Minimum Flow - cfm
9/4/12 11:00:00 PM PDT
9/4/12 5:00:00 PM PDT
9/4/12 11:30:00 AM PDT
9/4/12 5:30:00 AM PDT
9/3/12 11:00:00 PM PDT
9/3/12 5:00:00 PM PDT
9/3/12 11:00:00 AM PDT
9/3/12 5:00:00 AM PDT
9/2/12 11:00:00 PM PDT
12 - 14
Maximum Flow - cfm
9/6/12 4:00:00 PM PDT
Copyright © 2014
9/9/12 9:00:00 PM PDT
9/9/12 3:00:00 PM PDT
Max Exhaust
9/9/12 9:30:00 AM PDT
Min
Exhaust
9/9/12 3:30:00 AM PDT
9/8/12 9:30:00 PM PDT
9/8/12 3:30:00 PM PDT
9/8/12 9:30:00 AM PDT
9/8/12 3:30:00 AM PDT
9/7/12 9:30:00 PM PDT
9/7/12 3:30:00 PM PDT
9/7/12 10:00:00 AM PDT
Supply Low = 100 cfm
9/7/12 4:00:00 AM PDT
Sash Closed = 200 cfm
9/6/12 10:00:00 PM PDT
Supply High = 500 cfm
9/6/12 10:30:00 AM PDT
Sash Open = 1000 cfm
9/6/12 4:30:00 AM PDT
9/5/12 10:30:00 PM PDT
9/5/12 4:30:00 PM PDT
9/5/12 11:00:00 AM PDT
9/5/12 5:00:00 AM PDT
Gex High = 500 cfm
9/2/12 5:00:00 PM PDT
9/2/12 11:00:00 AM PDT
9/2/12 5:00:00 AM PDT
9/1/12 11:00:00 PM PDT
120000
9/1/12 5:30:00 PM PDT
9/1/12 12:00:00 PM PDT
9/1/12 6:00:00 AM PDT
9/1/12 12:00:00 AM PDT
Flow - cfm
Safe, Dependable and Energy Efficient Laboratories
December 2014
Lab Ventilation Airflow Specifications
System operation & modulation of
flow is based on the
Demand for Ventilation
Gex Low = 0 cfm
12 - 14
Lab Ventilation System - VAV Flow Specifications
Max Supply
Min
Supply
BAS Trend of Combined Flow for AHUs 11&12,13&14,15&16,19&20
(Week September 1 - September 9, 2012)
140000
130000
Max Flow
Average
Flow
110000
100000
90000
80000
Min Flow
Aggregate AHU 11-20 - Flow - cfm
7
Safe, Dependable and Energy Efficient Laboratories
December 2014
Laboratory VAV Flow Specifications
VAV Lab
Exhaust
VAV Lab
Air Supply
Max Exhaust
Max Supply
Min Exhaust
Min Supply
VAV
Fume
Hood
VAV
General
Exhaust
CAV
Transfer Air
12 - 14
Fume Hood VAV Airflow Specifications
VAV Fume Hood Exhaust
Min Exhaust
Max Exhaust
VAV
Fume
Hood
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
8
Safe, Dependable and Energy Efficient Laboratories
December 2014
Types of Laboratory Fume Hoods
Bench-Top
– Traditional Bypass
– Low Velocity / High Performance
– VAV – Restricted Bypass
– Retrofitted Traditional Bypass
Distillation
Floor Mounted (Walk-in)
12 - 14
VAV Fume Hood Components
VAV
Terminal
Outlet Duct
Bypass
Light
Monitor
Controller
100
Velocity Sensor
Sash(s)
Sash Sensor
Baffles
Airfoil
Work
Surface
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
9
Safe, Dependable and Energy Efficient Laboratories
December 2014
Fume Hood Operation and Specifications
Sash Opening Configuration
•
100% Full Open
•
Design Opening
•
User Opening
Average Face Velocity
•
100 fpm (0.51 m/s) – Traditional
•
60 fpm (0.3 m/s) – High Performance
Exhaust Flow
•
CAV
•
VAV
o Minimum Flow (150 – 375 ACH)
12 - 14
Unobstructed Flow Into Hood
Top View
Baffle & Slots
Airfoil Sill
Side View
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
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Safe, Dependable and Energy Efficient Laboratories
December 2014
Fume Hood Sash Types
Combination Sash
Vertical Opening
Combination Sash
Horizontal Opening
12 - 14
Effect of Person at Hood Opening
Top View of Hood
Vortex
Baffle
Operator
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
11
Safe, Dependable and Energy Efficient Laboratories
December 2014
Low Pressure & Reverse Flow Regions
Low Pressure
Reverse Flow Region
Extends 6-8 inches
(15-20 cm) from body
12 - 14
Effect of Baffle and Slot Position
Top Slot Open
No Mannequin at Hood
No Visible Escape
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
12
Safe, Dependable and Energy Efficient Laboratories
December 2014
Effect of Baffle and Slot Position
Top Slot Open
Mannequin at Hood
Reverse Flow at Bottom
12 - 14
Effect of Baffle and Slot Position
Top Slot Partially Closed
No Mannequin at Hood
No Visible Escape
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
13
Safe, Dependable and Energy Efficient Laboratories
December 2014
Effect of Baffle and Slot Position
Top Slot Partially Closed
Mannequin at Hood
No Visible Escape
12 - 14
Effect of Sash Movement on
Internal Airflow Patterns
Possible
Escape When
Raising Sash
High Concentrations
Behind Sash
In Vortex Region
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
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Safe, Dependable and Energy Efficient Laboratories
December 2014
VAV Fume Hood Flow Modulation
Flow (Qex) = Velocity (Vf) x Area (Af)
Sash Open
Flow (Qex) Minimum = ?
Sash Closed
Airflow Specifications
1. Velocity (Vf) at Sash Open
2. Qex Min at Sash Closed?
Flow Terminal
3. Containment Performance
•
•
•
Sash Open
Sash Closed
Sash Movement
4. Dilution
60 fpm - 100 fpm
5. Response Time
0.3 m/s – 0.5 m/s
6. Flow Stability
7. Removal & Transport
12 - 14
Flow Monitors and VAV Controls
•
Hood Monitors (Flow Measuring Device)
– Flow
– Velocity
– Pressure
•
TTW
Velocity
Sensor
and
Hood
Monitor
Monitors are
required on all
fume hoods
Flow Control Types
– Through the Wall Velocity
– Sash Position
– Occupancy
– Manual
VAV Modes
– Two State
– Full VAV
– VAV Hybrid
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
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Safe, Dependable and Energy Efficient Laboratories
December 2014
VAV Flow Response and Stability
•
Min and Max Flow
•
•
Response Time
Flow Stability
Sash Open
VAV Response To Sash Movement
Sash Closed
< 5 Seconds
< 20% Variation
Sash Open
600
2.0
1.8
500
1.6
1.4
400
1.2
300
1.0
0.8
200
0.6
Escape
Sash Closed
Escape - ppm
Flow Response
VAV
Terminal
0.4
100
0.2
0
0
10
20
30
40
50
60
70
Time - Seconds
Flow Response
80
90
100
110
0.0
120
Tracer Gas - ppm
12 - 14
VAV Flow Response and Stability
Good Control & Containment
DAQ
Poor Control & Containment
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
16
Safe, Dependable and Energy Efficient Laboratories
December 2014
Minimum Flow Specs for VAV Fume Hoods
•
Containment
•
•
Dilution
Removal
Duct Conc. (Cd)
1990s - EPA – 50 cfm / ft of Wh
2004 - NFPA 45
-
25 cfm / sq. ft. ws
-
2010 - Defers to ANSI Z9.5
2012 - ANSI Z9.5 (must be appropriate)
-
Internal ACH (150 ACH to 375 ACH)
-
150 ACH ~ 10 cfm / sq. ft. ws
-
375 ACH ~ 25 cfm / sq. ft. ws
Internal
Conc.
(Ci)
Caution: Minimum Flow is
Hood & System Dependent
12 - 14
Minimum Flow Specs for VAV Fume Hoods
Minimum Flow Depends on the
Hood, System and Application
System Design & Operation
– VAV Flow Control
– Flow Measurement
Ci
– Duct Velocity
Ci
Hood Design
– Hood Containment
– Hood Dilution (Dilution Factor - DF)
Application
DF
– Chemical Properties / Hazards
DF
– Generation Rates
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
17
Safe, Dependable and Energy Efficient Laboratories
December 2014
Evaluate Fume Hood Use to
Determine Appropriate Airflow Specifications
Laboratory Ventilation Risk Assessment
Survey Laboratories and Hoods
Evaluate Hazards & Processes
Apply Lab Ventilation Control Bands
Determine Theoretical Airflow
Specifications
12 - 14
Laboratory Hood Airflow Specifications
Lab Hood Control Band Factors
Airborne Hazard (LOC)
–
OSHA – Global Harmonized Standards
Generation Rate
–
–
–
Quantity of Material
Vapor Pressure
Heat / Energy
Flammability
–
Lower Explosion Limit ( LEL )
Corrosives
–
–
Type & Quantity
Process/Heat
Generation Location Inside Hood
Hood Dilution Factor
Dynamic Nature of Work
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
18
Safe, Dependable and Energy Efficient Laboratories
December 2014
Fume Hood Inventory &
Fume Hood Control Bands
The University of California - Irvine: ARP
Fume Hood
Number
Building
Biological Sciences III
Biological Sciences III
Biological Sciences III
Biological Sciences III
Biological Sciences III
Biological Sciences III
Biological Sciences III
Biological Sciences III
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
Engineering Hall
2300A
3400A
3400B
3400C
2300C
3300B
2400A
2400B
2110
2130
2140
3110A
3110B
3120
3130A
3130B
3121A
3121B
3131A
3131B
2120A
2120B
2121
Manufacturer
AirflowLEL
Hood Size
Control Band
0-10-20-30
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Jamestown Isolator
Kewaunee Supreme Air
Kewaunee Supreme Air
Jamestown Isolator
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
Kewaunee Supreme Air
6'
6'
6'
6'
6'
6'
6'
6'
5'
5'
5'
5'
5'
5'
5'
5'
5'
5'
5'
5'
5'
5'
5'
30
0
0
0
10
10
20
0
0
0
0
0
30
0
0
0
30
0
0
0
20
20
20
0
1
2
3
4
5
Exposure
Hazard Corrosive
(LOC)
0-5-10-15 0-10-20-30
10
10
15
10
15
10
15
10
15
10
10
10
15
10
0
10
0
10
0
10
0
10
0
10
15
10
0
10
0
10
0
10
15
10
15
10
0
10
0
10
0
10
10
10
10
10
12 - 14
Gen. Rate
Possible
Action
Location
Factor
Gen.
0-15-25-40
15
15
15
25
15
15
15
15
0
0
0
0
25
0
0
0
25
15
0
0
15
15
15
Dilution
0-5-10-15 0-5-10-15
5
15
5
15
5
15
5
15
5
15
5
15
5
15
5
15
0
15
0
15
0
5
0
15
5
15
0
5
0
15
0
15
15
15
5
15
0
15
0
15
5
15
5
15
5
15
Weighting
Summary
85.0
Hibernate or Remove 60.0
60.0
70.0
Min. Flow for Containment 70.0
(? < 150 ACH)
150 ACH – 250 ACH
250 ACH – 375 ACH
≥ 375 ACH
Operate as CAV
(no reduction)
65.0
80.0
45.0
25.0
25.0
15.0
25.0
100.0
15.0
25.0
25.0
110.0
60.0
25.0
25.0
65.0
75.0
75.0
ARP Band
3.0
1.0
1.0
2.0
2.0
1.0
2.0
1.0
1.0
1.0
1.0
1.0
3.0
1.0
1.0
1.0
3.0
1.0
1.0
1.0
1.0
2.0
2.0
Fume Hood Containment and Dilution Tests
VAV System Response Test
Fume Hood Containment Test
Fume Hood Dilution Test
G
S1
36"
S2
24"
S3
18"
G
S5
S1
S6
S2
S7
S3
G
G
S5
S1
S5
S6
S2
S6
S7
S3
36"
G
S
G
6"
G
S8
WS
S4
G
S
24"
S
18"
S
6"
G
G
S7
18"
S4
36"
S8
S4
WS
S8
G
WS
G
WS
6"
Midpoint
Sash to Baffle Depth
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
19
Safe, Dependable and Energy Efficient Laboratories
December 2014
Test Results - Containment & Dilution
6 ft Labconco
5 ft Jamestown
6 ft Fisher Hamilton
5 ft Kewaunee
Design ACH
375
375
375
375
Potential Min ACH
165
230
200
220
Dilution Factor (DF)
3
3
3
6.6
Potential Flow
Reduction - cfm
170
75
130
100
12 - 14
Fume Hood Optimization Process
Minimum Flow Specifications
Inventory Fume Hoods
Inventory
– Determine potential value of flow reduction
Evaluate and Determine Potential Flow Reduction
– Lab Ventilation Risk Assessment (Control Bands)
– Identify appropriate fume hoods
Control
Band
– Consider impact on Agency standards
Test Fume Hood Containment & Dilution
Test
– Sample of Hood Types
– Determine Minimum Safe Flow
– VAV control
– Containment
– Fume Hood Dilution
Implement
TAB & Re-Commission Hoods & Ventilation Systems
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
20
Safe, Dependable and Energy Efficient Laboratories
December 2014
Summary of Fume Hood
Airflow Specifications
Operating Specification and
Performance Criterion
Traditional
VAV Fume Hood
High Performance
VAV Fume Hood
Retrofitted Traditional
VAV Fume Hood
Opening Configuration
Max Opening
Max Opening
Max Opening
100 fpm
(+/- 10 fpm)
375 ACH
Subject to Assessment
60 fpm
(– 5 fpm, + 10 fpm)
375 ACH
Subject to Assessment
65 fpm
(– 5 fpm, + 10 fpm)
375 ACH
Subject to Assessment
Hood Static Pressure (“ w.g.)
< 0.5
< 0.5
< 0.5
Minimum Duct Velocity
Subject to Assessment
Subject to Assessment
Subject to Assessment
VAV Response
<5 seconds
<5 Seconds
< 5 Seconds
VAV Stability
< 20% CO
< 20% CO
< 20% COV
Cross Draft Velocity
<50% of FV
<50% of FV
<50% of FV
Smoke Test
No Escape
No Escape
No Escape
ASHRAE 110 Tracer Gas
AI < 0.1 ppm
AI < 0.1 ppm
AI < 0.1 ppm
Average Face Velocity
Minimum Flow
12 - 14
Maintaining Performance of VAV Controls
12 - 14
Exposure Control Technologies, Inc.
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www.exposurecontroltechnologies.com
Copyright © 2014
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Safe, Dependable and Energy Efficient Laboratories
December 2014
Quality Data - Accuracy and Precision
Not Accurate
and Not Precise
Precise but not
Accurate and
Precise
Accurate Can degrade
VAV Controls
30-50% within 5 years
Pre Optimization Flow Sensors = 20% to 65% Error
Post Optimization Flow Sensors = 5% Error
12 - 14
Fume Hood Face Velocity Tests
Syngenta
Fume Hood Average Face Velocity
140
130
120
110
Average Face Velocity (fpm)
100
90
80
70
60
50
40
Low – 39% High – 34%
30
Average Face Velocity (fpm)
20
Min fpm = Avg - 10%
10
Max fpm = Avg + 10%
0
Fume Hood ID
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
22
Safe, Dependable and Energy Efficient Laboratories
December 2014
Safe, Energy Efficient and Sustainable Operation
Lab Ventilation Management Program (LVMP)
–
Organization and Responsibilities
–
Collaboration & Communication
–
SOP’s for Testing and Maintenance
–
Metrics, Monitoring & BAS Utilization
Design & Commissioning Standards
Management of Change
Personnel Training
Required By ANSI Z9.5-2012
12 - 14
Ventilation Maintenance and Test Schedule
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
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Copyright © 2014
23
Safe, Dependable and Energy Efficient Laboratories
December 2014
Lab Safety & Energy Optimization
Train Personnel
• Lab Personnel • Facility Maintenance • Building Operators
12 - 14
Conclusions and Recommendations
• Airflow specifications are based on the demand for ventilation
• VAV systems provide the ability to modulate flow to meet the changing
demand for ventilation
• Energy reduction is achieved by improving efficiency of the ventilation
systems and reducing total airflow
• Establishing airflow specifications for VAV fume hoods requires a process
to evaluate the hood, the system and the application
• Protecting lab personnel and ensuring proper performance of laboratory
hoods requires maintaining and possibly updating the operating
specifications as conditions change
• A Lab Ventilation Management Program provides the tools necessary to
manage change and ensure safe, energy efficient and sustainable
laboratories.
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
24
Safe, Dependable and Energy Efficient Laboratories
December 2014
Lab Safety and Energy Optimization
High Performance Laboratory Buildings
ECT, Inc. Future Webinar Topics
• Establishing Airflow Specifications and Minimum ACH for Laboratories
• Predicting Energy Savings from Flow Reduction
• Implementing a Lab Ventilation Management Program
• Advanced Methods for Testing and Maintaining VAV Systems
• Improving safety and energy efficiency of traditional fume hoods with a
LabHoodPro Fume Hood Retrofit Kit
12 - 14
End
Questions
&
Discussion
Thomas C. Smith
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
[email protected]
12 - 14
Exposure Control Technologies, Inc.
919-319-4290
www.exposurecontroltechnologies.com
Copyright © 2014
25