Transcript Slide 1

Top 5 Energy Saving
Opportunities
Cynthia Putnam, Building Operator Certification – BOC®
National Grid Energy Expo, April 7, 2011
How much is too much?
Most
buildings can
cut total
energy use
by 5-30%
while fully
maintaining
or improving
both comfort
and function.
#1 – Benchmark your building’s
energy performance
80 kBtu/sf/year
Electricity kBtu + Gas kBtu/sf/year = kBtu/sf/year
A Free Tool through
ENERGY STAR®
EPA introduced the
Energy Performance Rating System
ENERGY STAR Portfolio Manager
• A standardized, comparable metric of whole building
energy and water performance
• www.energystar.gov
Energy Performance
75
50
86.0
121.1
1
Number of Buildings
100
ENERGY STAR
Energy Performance Rating
25
10
29.9
Best
Performers
165.7
Energy Intensity
(Kbtu/sf/yr)
Carbon Intensity
Sample size: 4,000 Office Structures
339.4
Worst
Performers
Energy Performance
Number of Buildings
100
75
50
ENERGY STAR
Energy Performance Rating
25
10
61% of buildings with a
rating of 75 or better are
more than 25 years old
29.9
86.0
Best
Performers
121.1
1
65% of buildings with a
rating between 0 and 24 are
more than 25 years old
165.7
Energy Intensity
(Kbtu/sf/yr)
Carbon Intensity
Sample size: 4,000 Office Structures
339.4
Worst
Performers
#2 – Schedule lighting &
HVAC equipment
The easiest way
to save equipment
energy is to turn it
off!
Who’s doing
nighttime walk
throughs?
Lighting and Plug Load
Scheduling
•Does the custodial staff turn off lights
after hours as they go through the
building?
•Does a lighting time clock account for
weekends and holidays?
•Do the lights actually turn off as
programmed?
•Have special event schedules been
reprogrammed back to normal?
•Are computer power saving modes
are enabled?
HVAC Load Scheduling
•Do programmed schedules for fans, pumps
and other equipment match requirements?
(and is the schedule being implemented?)
•Is optimum start and stop programming
being used – start later/end earlier?
•If fan-powered boxes or baseboards can
operate independently from the air handler,
are they programmed to match occupancy?
•Do the chiller and boiler have lockouts
based on outside air temperature?
•Are the chiller and boiler prevented from
operating at the same time?
•Are DHW circulating pumps scheduled off?
•Overtime air and vacant space
A Discovery!
Weekdays
Weekends
#3 – Find and correct
sensor error
Calibration
Critical control sensors should be
calibrated at least twice a year
Incorrectly placed
Failed
Critical sensors & issues
Critical control sensors include:
•Mixed air temperature
•Return air temperature
•Outside air temperature
•Supply air temperature
•Chilled water temperature
•Hot water temperature
•Carbon dioxide
Sensor Issues in Disguise
• Loads not met
• Economizer not working
• Equipment on when not
needed
• Simultaneous heating and
cooling
#4 – Review your service
contracts
• Review the services your provider is offering.
• Do they fit with your strategies for high performance?
• Is the offering a standard package or a customized response to your
needs?
• Does the firm focus on operational offerings?
• Ask about additional diagnostic services – especially building energy
tune-ups.
• Be specific in requests for “enhanced” service.
• Evaluate proposals on the value they bring, and their alignment with
the energy performance goals.
Service Contract for Rooftop
Units – Standard or Enhanced?
Enhanced Service for Packaged HVAC Unit
•Add an economizer where
none exists
•Quality assurance check of
refrigerant charge
•Verify and adjust airflow
•Recalibrate economizer
•Recalibrate thermostat,
schedules and set-points
•Adjust or replace sensors and
controllers as necessary
#5 – Develop Staff
Expertise
•Different skill sets - custodial,
mechanical, electrical, controls
•Know energy performance goal
•Involve staff in identifying
opportunities
•Provide training and professional
development in energy saving
strategies
Building Engineer Pitfalls
Limits of knowledge
Reactive v. proactive
Adjustments with no change log
Budget for Your Training
Program
“Organizations investing in employee
professional development spend on
average $1K annually per employee.”
American Society for Training & Development
Training Resources
• For Managers
– APPA’s Education Facilities Professionals (EFP®)
– BOMA’s Facility Management Admin (FMA®)
– AFE’s Certified Plant Engineer (CFE®)
– IFMA’s Certified Facility Manager (CFM®)
– AEE’s Certified Energy Manager (CEM®)
• For Building Operators & Technicians
– Technical colleges
– Building Operator Certification (BOC®)
Join Us for NYSERDA’s
BOC Level I Courses
Albany – May 10, 2011
Syracuse – August 30, 2011
To register: www.theBOC.info
What are the top 5?
3/19/09©2009
The Top 5
#1 - Benchmark building energy performance
#2 – Schedule lighting & HVAC equipment
#3 – Find and correct sensor error
#4 – Review service contracts
#5 – Train building operators
Resources
National Grid
www.nationalgridus.com
NYSERDA
www.nyserda.org
Building Operator Certification – BOC®
www.theBOC.info