NAESCO WEBINAR - APRIL 19, 2021
Transcript of NAESCO WEBINAR - APRIL 19, 2021
NAESCO WEBINAR - APRIL 19, 2021
April 19, 2021 Webinar
NAESCO WEBINAR - APRIL 19, 2021
WHY ENGINEERS FAIL TO IDENTIFY GREAT SAVINGS OPPORTUNITIES FOR COOLERS
AND FREEZERS?
HOT TO ADD MORE VALUE TO PROJECTS!
NAESCO WEBINAR - APRIL 19, 2021
WHY I LOVE WHAT I DO
Presented by Emre Schveighoffer, CEO & FounderNational Resource Management, Inc.
PERFORMANCE, EFFICIENCY AND OPTIMIZATION OF REFRIGERATION SYSTEMS FOR ESCO PROJECTS
NAESCO WEBINAR - APRIL 19, 2021
Brief Agenda
❑ Doing a walk through – what to look for when you see walk-in cooler or freezer
❑ Identify & qualify potential refrigeration measures
❑ How to predict energy savings
❑ User experience is important and good discovery will help sell the project
❑ Some example case studies
❑ M&V must be easy to document savings – controls don’t wear out have long life
❑ Live demo – how past clients use and benefit from solution
NAESCO WEBINAR - APRIL 19, 2021
Possible Poll QuestionsOn a scale of 0-5, what is your level of knowledge on refrigeration?
0 1 2 3 4 5
(Or this one) When it comes to refrigeration?
I understand and know how to evaluate
I can identify opportunities but have hard time to know if it is worth chasing
I don’t know what I don’t know so I pass by
Do most of your projects typically have a potential refrigeration opportunity?
Yes No
If you do address refrigeration, what are you currently including?
EC motors anti-sweat control smart control EMS type control New refer unit
What is the typical payback a measure need to meet for cost effectiveness?
3-years 5-years 7-years 10-years 12-years 15-years
TYPICAL ESCO PROJECTS WE WORK ON
K-12
Higher Ed
Hospitals
Correctional
Federal
Pharmaceutical
Sports Arenas
Cold Storage
NAESCO WEBINAR - APRIL 19, 2021
Jan Feb Mar Apr Jun Jul Aug Sep Oct Nov Dec
Co
olin
g C
apac
ity
Design Capacity
Required Capacity
Deteriorated Capacity
Savings Opportunity = Area above the demand
curve, below the capacity line
Excess capacity = greater savings
Why, How and When savings are realized
NAESCO WEBINAR - APRIL 19, 2021
Have you ever lost food in your cooler or freezer?
Is your kitchen run by a vendor or in-house? Who is accountable?
Who is responsible for food safety, and do they manually log temperatures?
How old is the refrigeration equipment in your cooler & freezer?
Have you implemented energy saving projects for your refrigeration?
Discuss benefits other than energy savings that will make their life better
Having that conversation increases desire and buy in… gets them to consider a refrigeration solution
Key is to discover what their PAIN and offer a PROVEN solution?
DISCOVERY QUESTIONS DURING WALKTHROUGHWITH CLIENT WHEN REFRIGERATION IS IDENTIFIED
EXPERIENCE = LESSONS LEARNED
50,000+ SYSTEMS RETROFITTED IN 26+ YEARS
Walk-in coolers & freezers
Primary need from refrigeration system – keep it running
Refrigerated warehouses
Laboratory cold rooms
High risk areas with high value products
OUR CLIENTS SAY PEACE OF MIND IS MAIN BENEFIT
NAESCO WEBINAR - APRIL 19, 2021
REALWORLD FACTS ABOUT DESIGN
How are refrigeration systems sized?◦ It really depends on who designed it◦ One size fits all mind setWhy is the end user or operator important?
NAESCO WEBINAR - APRIL 19, 2021
WHAT A SOLUTION SHOULD INCLUDE
Proven and verifiable long-term energy savings – data logging in controller
Typical energy savings achieved for refrigeration is 30-40%
Demonstrated Operational improvements:◦ Performance optimizations that reduce runtimes
◦ Needs-based cooling schedules
◦ Replace motors with EC motors (where applicable)
◦ Anti-sweat door heater controls based on dew point
◦ On-Demand electric defrost
◦ A cache of equipment and temp. alerts
User-friendly for operators, technicians and ESCO engineers
NAESCO WEBINAR - APRIL 19, 2021
Dedicated Smart Controllers
NAESCO WEBINAR - APRIL 19, 2021
Strategies - Smart Fan Controls
• Fans are cycled when cooling is off using preset temp points
& schedules
• Can reduce evaporator fan runtimes by up to 75%
• Reduces wear and tear, extend equipment life
• Reduces noise levels for staff when in cooler
• Protects compressor when fans fail or shut off
• Operators will become raving fans of the project
NAESCO WEBINAR - APRIL 19, 2021
Anti-Sweat Door Heater Controls
Door heaters operate based on dew-point settings
Using solid state relays, heater circuits are cycled every second
Can reduce annual energy use by heated doors up to
90%* on cooler and up to 40% - 60%* on freezer
*Based on location of the doors within the space
NAESCO WEBINAR - APRIL 19, 2021
Timed Shutdown Button
Safely turn off fans for 20 mins for in-cooler tasks:
◦ Deliveries
◦ Taking inventory
◦ Stocking
Helps prevent fans from being manually turned off and then being
forgotten about
Reduces energy waste when doors are open during deliveries
NAESCO WEBINAR - APRIL 19, 2021
Electric Defrost/On-Demand Defrost
Demand defrost vs timeclock
Defrost is initiated based on compressor run times
Using thermostatic defrost – the termination sensor is used to
limit temp rise during defrost
NAESCO WEBINAR - APRIL 19, 2021
Demand Defrost & T-stat Examples
NAESCO WEBINAR - APRIL 19, 2021
System Bypass
Retain existing controls to provide both redundancy and easy
troubleshooting
Bypass safely sets cooler control back to its original thermostat and
prevents misdiagnosing issues
Allows technicians to troubleshoot without jeopardizing
operational data and system settings
NAESCO WEBINAR - APRIL 19, 2021
Stored Operational Data
• At least 10-years worth of operational data on Micro SD card
– Downloading historical operating data makes it easy to identify failures or
intermittent issues when reat-time connection is not possible
• Temperature sensor logs
• Equipment Runtime logs
• Easy to calculate savings from pre and post run times
NAESCO WEBINAR - APRIL 19, 2021
Equipment & Temperature Alerts
• Quickly alerts local staff if temperatures drift out of range
• Flashing screen on controller and optional strobe so alarm
doesn’t go unnoticed
• Mobile and email notifications available when connected to the
cloud
NAESCO WEBINAR - APRIL 19, 2021
Integration with ESCOs BAS
• Can be connected to an existing BAS
• Modbus TCP/IP
• BACnet w/translator
• Advantage Navigator (Siemens)
• Ethernet port to connect to cloud platform
NAESCO WEBINAR - APRIL 19, 2021
M&V options A. Copy data from Micro SD to PC and convert data into CSV/Excel table
B. Connect to BAS, BAS needs to be configured to retrieve and convert data
C. Other cloud-based platforms (check if applicable)
D. Advantage Navigator (Siemens)
NAESCO WEBINAR - APRIL 19, 2021
TYPICAL CLOUD PLATFORM
EXAMPLE OF CLOUD PLATFORM
Cloud-based 24/7 Equipment Supervision
Real-Time Performance Metrics
Summary Page for all Zones
Automated Temperature Logging
Instant Email or Text Notification
Mobile Access to Data and Settings
NAESCO WEBINAR - APRIL 19, 2021
NAESCO WEBINAR - APRIL 19, 2021
NAESCO WEBINAR - APRIL 19, 2021
NAESCO WEBINAR - APRIL 19, 2021
How-to video: Walk-in Cooler Audit
In this video you’ll learn:
• The general locations of the thermostats, evaporator fans, and door heaters
• Where the nameplates are and the info we need
• Any potential obstacles for the installation
NAESCO WEBINAR - APRIL 19, 2021
https://youtu.be/tXzYjrTD6Fg (6:37 running time)
How-to video: Condenser/Compressor Audit
(1:33 running time)https://youtu.be/tMM3qL-fwfs
In this video you’ll learn:
• Where the condenser/compressor units are in relation to
the walk-in
• Where the nameplates are and the info we need from them
Common installation challenges
Waiting for kitchen staff to authorize and begin the installation
A clear path in the walk-in to access the evaporator fan sets
Walk-in door is locked
Installation interrupted by deliveries
Walk-in space is too full to perform install
NAESCO WEBINAR - APRIL 19, 2021
Some Factors that Impact Pricing
Project location
Type of facility
Prevailing wage or prevailing wage with Union labor
Installation shift schedule, i.e. 1st, 2nd or 3rd
Security level or difficulty gaining access to facility
Tamper proof enclosure or specialty hardware (as needed)
NAESCO WEBINAR - APRIL 19, 2021
Case study: Capital Community College
Total Project Cost (Parts & Labor): $13,075
Cost per zone controlled (3): $6,985
Cost to replace motors (4): $1,100
Cost for door heater controls (2): $2,090
Cost for other measures: $2,900
Utility Incentive: $6,537.50 (50%)
Net Cost to Customer: $6,537.50
Annual kWh Savings: 20,900 kWh
Annual Savings (@ $0.12/kWh): $2,680
Payback Period: 2.44 years
NAESCO WEBINAR - APRIL 19, 2021
Case study: Hopkinton Schools
Total Project Cost (Parts & Labor): $14,390
Cost per zone controlled (3): $6,985
Cost to replace motors (4): $1,100
Cost for door heater controls (2): $2,090
Cost for other measures: $2,900
Utility Incentive: $0 (0%)
Net Cost to Customer: $14,390
Annual kWh Savings: 14,500 kWh
Annual Savings (@ $0.16/kWh): $2,380
Payback Period: 6 years
NAESCO WEBINAR - APRIL 19, 2021
Case study - Harvard Biology Building
Total Number of Cold Rooms: 34
Annual kWh Savings: 78,000 kWh
Annual Energy Savings: $19,800
Utility Incentive: 50%
Simple Payback: 1.45 years
Implemented Measures: Controls
80 motors upgraded to EC motors
Anti-sweat door heater controls
NAESCO WEBINAR - APRIL 19, 2021
Real Time View: What the client can see and do
We will go to www.remotesitemanager.com
❑ Monitor temperatures and operational statistics
❑ Manage and make changes to refrigeration control parameters
❑ Start a needed defrost from any smart device
❑ FAULT DETECTION – Energy waste can be alarmed
❑ Set and receive alerts for both temperature and equipment
❑ Enjoy Peace of Mind
NAESCO WEBINAR - APRIL 19, 2021
Q & A
NAESCO WEBINAR - APRIL 19, 2021
Contact information
Juan RiveraESCO Business Development ManagerOffice: 781-828-8877 Ext. 104Mobile: 508-254-6783email: [email protected]
Emre Schveighoffer, PresidentOffice: 781-828-8877 Ext. 101Mobile: 617-212-5424Email: [email protected]
NAESCO WEBINAR - APRIL 19, 2021
Questions Tim can ask1. What happens if your controller fails or loses power?
2. How can we get a hold of someone if we see an issue?
3. Does the walk-in need to be empty before the installation?
4. How long does installation take for each cooler?
5. Does the system void any warranty?
6. Will their contractor still be able to service their equipment?
7. Do operators need special training on the smart controllers?
8. Pertaining efficiency, what does the real-time alarm system look for?