2020 seasonal energy management seminar 2020 presentation.pdf2020 seasonal energy management...

Proprietary and Confidential Information •September 30th 2020

Jen Stokes, Mark Spanton, Paul Albinson, Jessica MillerKey Account Managers

2020 Seasonal Energy Management Seminar

Proprietary and Confidential Information •

Material Presented On a Courtesy Basis

2

• This presentation is being provided for informational purposes only and does not purport to be comprehensive. Neither CenterPoint Energy, Inc., together with its subsidiaries and affiliates (the “Company”), nor its employees or representatives, make any representation or warranty (express or implied) relating to this information. By reviewing this presentation, you agree that the Company will not have any liability related to this information or any omissions or misstatements contained herein. You are encouraged to perform your own independent evaluation and analysis.

• This presentation contains third party information, including information provided by the various sources identified on the respective slides. CenterPoint Energy, Inc. has not independently verified this information. You are encouraged to perform your own independent evaluation and analysis.


Seminar Agenda

3

• Curtailment must-knows

• Rebate programs and services overview

• How to maintain your steam or hydronic boiler system

Proprietary and Confidential Information • 4

Curtailment Must-Knows


Overview of CenterPoint Energy’s Customers

5

Dual Fuel Customers:• 1,325 Customers• Can be curtailed• Can tolerate an interruption and have the ability to discontinue

using natural gas and switch to a back-up fuel• Do not pay for firm system capacity for agreeing to be curtailed

when necessary

Firm Customers:• 884,000 customers (commercial and residential)• Are not curtailed• Cannot tolerate an interruption in gas service• CenterPoint Energy purchases interstate pipeline system

capacity and gas supply to continuously meet the needs of firm customers.


What is a Dual Fuel Customer?

6

• To qualify as a Dual Fuel customer, you must be able to tolerate an interruption- by either switching to a back-up fuel or process interrupt

• Dual fuel customers do not pay for firm interstate pipeline system and distribution system capacity for agreeing to be curtailed when necessary

• We can serve firm customer demand above our pipeline entitlements using our local peak shaving storage and production

• A dual fuel customer typically saves between 15-22% of natural gas cost in operating costs by avoiding the firm demand charge


Why Does CenterPoint Energy Curtail?

7

• CenterPoint Energy contracts with interstate pipeline providers for a certain amount of pipeline capacity and builds peak shaving systems to serve firm customers only.

• Dual fuel customers do not pay for this capacity.

• To maintain minimum acceptable distribution system pressures

• CenterPoint Energy does not build the distribution system to serve interruptible customers under peak conditions.


When Does CenterPoint Energy Curtail?

8

• When customer demand exceeds contracted pipeline capacity• Pressure problems on the distribution system• Physical disruption on the distribution system• Supply limitations

• Curtailment generally occurs in the winter BUT customers should be prepared to curtail anytime

• When curtailment is in effect, CenterPoint Energy monitors current weather conditions and total pipeline volumes along with expected weather conditions

• CenterPoint Energy only curtails as long as necessary


How Does CenterPoint Energy Curtail?

9

When the decision to curtail is made: • The website is updated along with the infoline (612) 321-4998

• CenterPoint Energy representatives call down the list of contacts provided by the customer until someone is reached. If no one is reached in person, a message will be left.

• At the time message left, the one hour notification period begins.

• This process is reversed when curtailment is released (please wait for your phone call before going back on gas regardless of what the website or infoline state)


Role Temperatures Play in Curtailment

10

• As the temperature drops, demand for natural gas increases

• When customer demand approaches our contracted pipeline capacity we curtail our dual fuel customers in order to continue to supply gas to our firm customers

• We can serve firm customer demand above our pipeline entitlements using our local peak shaving storage and production

Note: A number of other factors, such as wind, cloud cover, and day of the

week also affect curtailment.


Small Volume Dual Fuel (SVDF) Curtailment History

11

Days per month

* Exceptions for operational curtailment.Based on 10-year HDD average

. YEAR NOV DEC JAN FEB MAR

TOTAL Temperature

% above/below normal 2009/10 0 0 0 0 0 0 2% warmer 2010/11 0 0 0 0 0 0 8% colder 2011/12 0 0 0 0 0 0 25% warmer 2012/13 0 0 0 0 0 0 17% warmer 2013/14 0 1 8 0 2 11 11% colder 2014/15 0 0 2 0 0 2 5% colder 2015/16 0 0 0 0 0 0 11% warmer 2016/17 0 0 0 0 0 0 12% warmer 2017/18 0 0 0 0 0 0 5% warmer 2018/19 0 0 3 1 0 4 8% colder 2019/20 0 0 0 0 0 0 3% warmer Projected Normal

0

2

4

2

0

8-10


Large Volume Dual Fuel Curtailment History

12Based on 10-year HDD average

* Exceptions for operational curtailment

Days per month. YEAR NOV DEC JAN FEB MAR

TOTAL Temperature

% above/below normal 2009/10 0 0 0 0 0 0 2% warmer 2010/11 0 2 2 0 0 4 8% colder 2011/12 0 0 0 0 0 0 25% warmer 2012/13 0 0 1 0 0 1 17% warmer 2013/14 0 3 10 0 2 15 11% colder 2014/15 0 0 2 0 0 2 5% colder 2015/16 0 0 0 0 0 0 11% warmer 2016/17 0 0 0 0 0 0 12% warmer 2017/18 0 0 0 0 0 0 5% warmer 2018/19 0 0 3 1 0 4 8% colder 2019/20 0 0 0 0 0 0 3% warmer Projected Normal

0

4

7

4

1

10-16


2019-20 Curtailment Learnings

13

• CenterPoint Energy did not call any large-scale curtailments in the winter of 2019-20 due to warmer than normal temperatures.

• Although recent winters have been overall mild, we still experience extended cold snaps that require curtailment.

• Year-round preparedness is essential!


General Curtailment Learnings/Issues

14

Past issues have indicated that customers:

• Removed their back-up system and were not able to curtail NOTE: MUST consult with CenterPoint Energy for permission to switch to firm and CenterPoint Energy will determine if it is an option before removing your back-up system.

• Back-up fuel quality issues• Test your back-up system more than just once

• Did not know how to operate their back-up systems• Have appropriate people been trained? • Has system been tested?

• Incorrect curtailment contact person• Are your curtailment contacts that CenterPoint Energy has up to date?

• Provided incorrect phone number (i.e. work number instead of cell phone for non-business hours)


Charges For Not Curtailing

15

• Curtailment charges for not curtailing when requested:• $30/Dth plus highest gas cost for first time• $60/Dth plus highest gas cost for all other times

• Tariffs stipulate all unauthorized gas use charges be collected from customers. These charges go to pay any penalty fees our suppliers charge us or are returned to the Firm rate payers

• CenterPoint Energy does not profit from these charges!

• High price impacts due to weather and demand

• Lack of curtailment compliance has increased regulatory scrutiny and unauthorized gas charges, resulting to required annual attestation


Curtailment Non-Compliance Example

16

Example:A customer who used 6,000 Therms of gas during a curtailment when the gas cost was $55 / Dth (or $5.50 / Therm)

First instance: 6,000 X $3.0000 / Therm = $18,000 unauthorized gas charge6,000 x $ 5.50/ Therm = $33,000 gas cost$51,000 for that day (the curtailment lasted 3 days)

Second Curtailment: 6,000 X $ 6.0000 / Therm = $36,000 unauthorized gas charge6,000 x $ 5.50/ Therm = $33,000 gas cost$69,000 for that day

In Contrast – a LVDF system customer would have been billed (approx.):6,000 X $0.48310/ Therm = $2,899 for the same volume of gas

NOTE: The highest daily price for natural gas in December 2017 approached $70


Dual Fuel Savings

17

Typically save 15-22% of natural gas cost

Note: Savings based on average rate class consumption and expected 2020 propane prices. Actual savings will vary depending on consumption, actual propane prices, level of curtailment, currently tariffed rates, etc. Annual savings affected by natural gas commodity and back-up fuel price volatility.

Chart for illustration purposes only.

Annual Daily Natural Gas

Propane Total Firm Interruptible Savings

Interruptible Savings %

SVA

6.300 46 $29,244 $342 $29.586 $35,820 $6,234 17%

SVB

18,000 141 $81,050 $933 $81,983 $101,285 $19,302 19%

LVI 163,000 800 $615,106 $9,752 $624,858 $730,848 $105,990 15%


Dual Fuel Class Definition

18

If you anticipate large changes in your natural gas usage, contact your Account Manager or call 612-321-4330 to ensure CenterPoint Energy can adequately serve you.

Dual Fuel Customer Class Volume of Natural Gas Use

Small Volume Dual Fuel & Small Volume Firm/ Interruptible – A

Peak day is less than 200 Dth and less than 12,000 Dth/year

Small Volume Dual Fuel & Small Volume Firm Interruptible – B

Peak day is less than 200 Dth and 12,000 or more Dth/year

Large Volume Dual Fuel & large Volume Firm/Interruptible

200 Dth or greater peak day


Firm/Interruptible Tariff

19

• Combined best of both Firm & Interruptible services for small volume & large volume, Sales & Transport

• Elect a Base Level of Firm Service before Sept 1 each year– All excess volume is Interruptible– Required to curtail to you Base Level

• Dual Fuel Unauthorized Charges apply to non-compliance

• Pricing consistent with applicable Firm & Interruptible classes.• Remain either Sales Service, or Transportation Service

– Monthly switching, or combinations of Sales & Transport not allowed

• Requires CenterPoint Energy’s approval for Base Level of Firm which is subject to availability.

• Requires a new Agreement• See your Key Account Manager for details & availability


The Curtailment Queue

20

Small Volume Dual Fuel “A”

Small Volume Dual Fuel “B”

Large Volume Dual Fuel

9 days

14 days

25 days

0 to -10 F

+5 to - 5 F

10 to 0 F

Days of Curtailment to Plan for (approx.)

Average Daily Curtailment Temperature (approx.)


Have a Curtailment Plan

21

Back-Up System To Do’s:1. Conduct maintenance / operation check2. Test your system for a 24-hour operation 3. Train the equipment operators4. Fill your back-up storage tanks5. Check and maintain good fuel quality6. Know your back-up fuel use rate

• Oil: Jan. peak day therms x .72= gallons/day• Propane: Jan. peak day therms x 1.1= gallons/day

7. Call utility if back-up system is inoperable


Dual Fuel Considerations:Fuel Oil Users

22

Maintenance checklist for fuel oil back-up system:• Increase turnover if possible• Keep tanks full to reduce presence of air• Test fuel tanks twice per year for microbial and water

presence • Treat with fuel stabilizer• Remove water• Partner with your maintenance company and supplier to

review expectationsDisclaimer: Always consult the operations and maintenance schedule as provided by your back-up fuel supplier. This presentation is not intended to be interpreted as, and is not, a maintenance schedule for your back-up fuel system.


Dual Fuel Considerations:Propane Users

23

Maintenance check list for propane back-up system:• Review system for compliance of codes and standards• Review operator training • Review system on an ongoing basis for signs of leakage • Ensure protection of buried pipe and equipment is adequate• Start and test system making sure all equipment is operating

properly• Additional testing of system at cold- and high-demand times • Partner with your maintenance company and supplier to review

expectationsDisclaimer: Always consult the operations and maintenance schedule as provided by your back-up fuel supplier. This presentation is not intended to be interpreted as, and is not, a maintenance schedule for your back-up fuel system.


Have a Curtailment Plan

24

What you need to do: • Be off natural gas within one hour of receiving the curtailment notification

• Have an internal communications plan established

• Determine correct contact person for during and after business hours

• Have all established contact persons trained to react

• Are employee back-up systems in place?• Provide contact numbers that will ensure a live person, not voicemail

• Always check your voicemail system. If we cannot reach your contacts, we will leave a message to go on or off natural gas.


Reminder

25

Remember: You have ONE hour to curtail once the curtailment contact has been reached or a message has been left.


Dual Fuel Requirements

26

Additional Dual Fuel Requirements:

• Adequate standby systems with recommended alternate fuel storage for 7 to 10 days

• Need 2.5 million Btu/hr connected load

• Choose the supplied meter communication option (wireless cell phone technology) or provide an analog phone line for automatic meter reading

• If you currently have analog, you can switch to wireless for $17/mo.


Dual Fuel Considerations

27

Tangible and intangible costs to consider with Dual Fuel service versus Firm service

•The obligations of owning and operating a back-up system•Discounted delivery service and no cost of gas (COG) demand charge•Arranging for and managing the purchase of fuel for the back-up system•Regular maintenance of the back-up system•Labor costs associated with having someone on-call to operate the system

•Potential disruption to your operations heating source during peak heating times

•Firm service must be approved by CenterPoint Energy prior to removing back-up system (firm service may not be available)

•Contractual requirement is a 30-day written notice to terminate


Is Your Contact List Current?

28

• Emails were sent to you by your account manager

• Email will include an Interruptible Certification Form

• Packets mailed in September to those that did not respond to the email requests. Replies are due back to CenterPoint Energy by September 30th

• Please BE SURE to return your updated Curtailment Contact List ASAP to your Key Account Manager at CenterPoint Energy.


Is Your Contact List Current?

29

3. Website: CenterPointEnergy.com under business services, select “Minnesota” and then “Commercial & Industrial” OR go to: CenterPointEnergy.com/CurtailmentContacts

https://www.centerpointenergy.com/en-us/Services/Pages/CNP_Forms/Curtailment-Event-Contacts.aspx?sa=mn&au=bus


Utilize SharePoint to Update Your Contact List

30

Step 1 Step 2


Utilize SharePoint to Update Your Contacts

31

Step 3


Update Your Contacts!

32

• For questions about completing the contact list, contact your Key Account Manager OR call 612-321-4330

• This is YOUR responsibility

• If you did not receive an email or packet, call your Account Manager or 612-321-4330

• Be sure to reply to CenterPoint Energy even if there are no changes

• If filling out the electronic form, simply state “no changes” in the “notes/special instructions” field).


CenterPoint Energy Contact Information

33

• Gas Leak Emergencies 612-372-5050800-722-9326

• Curtailment Infoline 612-321-4998800-234-5800 x14998

• Curtailment Forecast webpage CenterPointEnergy.com/CurtailmentForecast

• All other services, including:⚫ Adding load⚫ Equipment changes⚫ Pressure problems⚫ Efficiency improvements⚫ Any other non-emergency gas issues

Call your Account Manager

Or612-321-4330800-234-5800 x4330


Questions?


2020 Rebate Programs & Services Overview


• Energy utilities in MN are required to promote and deliver energy efficiency programs for their customers (State legislation)

• Regulated by the MN Department of Commerce (DOC), Division of Energy Resources (DER), and the MN Public Utilities Commission (PUC) to ensure:

• Ratepayer dollars are used effectively• Annual energy savings and spending are reported accurately

• MN is a national leader regarding energy efficiency and has been recognized by the American Council for an Energy-Efficient Economy (ACEEE), ranking as the 10th most energy efficient state in America during 2016.

The “Why” and “What” of CIP


2020 is an extension of the three year triennial plan. New plan will go into effect for 2021 with some new program offerings and continuation of many already existing.• Heating system rebates

• Water heating rebates

• Process equipment rebates

• Foodservice equipment rebates

• Custom rebates

• Natural Gas Energy Analysis

• Process Steam Trap Audit program

• Multi-Family Building Efficiency program

• Design / Engineering programs

Prescriptive Rebates

Programs & Services

Programs and Services Overview

Program is valid for 2020 calendar year installations.


Prescriptive Rebates

What is a prescriptive rebate?• A standardized, predetermined list of rebates for

CenterPoint Energy customers who add, replace, or retrofit natural gas equipment of pre-qualified, high-efficiency performance. These rebates are set dollar amounts or rates.

Prescriptive rebate offerings: • Boilers and boiler system components (hot water and

steam)• Space heating system rebates• Water heater rebates• Process equipment rebates• Foodservice equipment rebates

CenterPointEnergy.com/BusinessRebates


Heating System Rebates

Replacing a dual fuel boiler with a single fuel? Back-up system removal may not be an option unless firm classification is approved.


Heating System Rebates


Commercial Boiler Tune-Ups

• Boiler tune-ups are eligible for a rebate every other year

• Be sure to complete and submit your rebate applications as soon as the tune-up is complete.


Other Heating Systems


Commercial Laundry

43


Water Heating Rebates


Process Equipment Rebates


Prescriptive Rebate Calculator

Estimate your rebate amount when you’re installing new or replacing old equipment using our Commercial Rebate Calculator

•Simply select the equipment piece

•Enter in required info

•Find out the potential rebate amount your customer will receive

CenterPointEnergy.com/RebateCalculator

http://www.centerpointenergy.com/en-us/SaveEnergyandMoney/Pages/CNP_Calculators/Commerical-Rebate-Calculator.aspx?sa=MN&au=bus


Multi-Family Building EfficiencyTwo energy companies. One Program.

Multi-family buildings of 5 units or more can receive a rebate for alleligible projects completed within 2 years of receiving your energy analysis, and freeinstallation of energy efficient showerheads, faucet aerators and LEDs and more.

MultiFamilyEnergySolutions.com

FREE Services Throughout the Whole Building

Reduce Energy Usage and Maintenance Costs

Incentives to Boost ROI


CUSTOM REBATES AND DESIGN/ENGINEERING PROGRAMS


Custom Rebates

What is the custom rebate program?The custom rebate program is designed to provide rebate opportunities for natural gas-saving technologies not covered in our Prescriptive rebate offerings.

For a project to be approved for a custom rebate: • Contact CenterPoint Energy early on in the idea proposal state to

review the project.• Provide project scope, energy savings calculations, and project

costs.


Custom Rebate Examples

• Energy recovery systems• Air destratification systems• Dust (particle) collector• Waste heat recovery• Paint and powder process equipment• Thermal oxidizers• Various process equipment• And more…

CenterPointEnergy.com/Custom50

https://www.centerpointenergy.com/en-us/business/save-energy-money/efficiency-programs-rebates/equipment-programs-and-rebates/steam-trap-audit?sa=mn


Natural Gas Energy Analysis Program

CenterPointEnergy.com/EnergyAnalysis

FREE direct install

gas-saving measures

include:

▪ Programmable

thermostats

▪ Low-flow aerators &

showerheads

▪ Pre-rinse spray valves

▪Weather-stripping for

exterior doors

Type of Analysis Cost Value

Basic

(for small business)

$50 $500

Comprehensive

(for mid-size businesses)

$200 $1,600

Custom

(for larger operations)

Costs determined on a project-by-

project basis for this specialized, in-

depth approach.

Ad hoc services

(for specific energy use analysis, such as

steam trap surveys for heating system and

infrared scans)

Costs determined on a project-by-

project basis.

What is it?A certified energy auditor will visit your facility, inspect your building envelope and installed natural gas equipment, examine how it is operated, and identify opportunities to improve energy efficiency.

https://www.centerpointenergy.com/en-us/business/save-energy-money/efficiency-programs-rebates/equipment-programs-and-rebates/natural-gas-energy-analysis?sa=mn


Natural Gas Energy Analysis

What’s covered in the Analysis?

• Building Envelope• HVAC• Controls• Kitchen and Laundry Equipment• Water Heaters

For full details visit CenterPointEnergy.com/EnergyAnalysis



What’s included in the Analysis report?• Customer details• Auditors information• Executive summary

– Basic facility info– Equipment usage and equipment details

– Key findings and recommendations– Safety related items for immediate attention

• Facility benchmarks• Equipment end use breakdown

(pie chart)• Recommendations and rebate opportunities• Actions plans and next steps



Heating System Steam Trap AuditCenterPoint Energy offers a subsidized steam trap survey to Natural Gas Energy Analysis program participants through the Custom Analysis option.

What’s included in this audit? An energy audit professional will visit your facility to:• Conduct steam trap testing using ultrasonic and infrared equipment • Inventory all traps tested• Identify failed traps to be replaced • Highlight other areas of concern (i.e. leaking valves and uninsulated pipes)

CenterPoint Energy also offers rebates to cover 35% of repaired or replaced steam traps, up to $10,000 per building



Here’s how to participate:• Visit CenterPointEnergy.com/EnergyAnalysis

• Call your CenterPoint Energy key account manager our Business Customer Hotline at 612-321-4939 (877-809-3803)

• Email: [email protected]

https://www.centerpointenergy.com/en-us/SaveEnergyandMoney/Pages/CNP_Forms/Natural-GasEnergy-Analysis-Request.aspx?sa=mn&au=bus


Alternative Steam Trap Audit Program Modified for 2020

How the Steam Trap Audit Program works:• Now available for heating and process customers

• Any trade ally can conduct the audit

• Customers may participate every other year

• Program pays for the steam trap audit at a rate of $15/tested trap up to 100% of the audits cost

Audit funding is payable upon receipt of:• Program application

• Audit sheet(s)

• Invoice(s) for repaired trap(s)

• Invoice for audit

• Invoices(s) for the repair labor (or estimate for internal labor)

CenterPointEnergy.com/SteamTrapAudit56

https://www.centerpointenergy.com/en-us/business/save-energy-money/efficiency-programs-rebates/equipment-programs-and-rebates/steam-trap-audit?sa=mn


Process Steam Trap Audit

CenterPointEnergy.com/ProcessSteamTrapAudit

How the Process Steam Trap Audit Program works:• Customers may participate every other year• Program pays for the steam trap audit at a rate of $15/tested trap

up to 100% of the audits cost

Audit funding is payable upon receipt of:• Program application• Audit sheet(s)• Invoice(s) for repaired trap(s)• Invoice for audit• Invoices(s) for the repair labor (or estimate for internal labor)


Industrial Process Study

Program helps identify cost-effective natural gas-saving measures in an industrial facility.

The study reviews:• Boiler room, steam distribution, condensate return and end users• Industrial furnaces and heat recovery• Other gas-using processes, such as dryers, thermal oxidzers, and production lines• HVAC equipment (particularly if large make-up air is involved because of the processes)• A combination of any of the above items


Industrial Process Study

How the Industrial Process Study program works:• CenterPoint Energy provides funding to offset a portion of the study

costs for a third-party to detail the energy-saving potential of an industrial customer’s main gas-consuming processes.

• Funding could be up to 75% of the study cost (capped at $15,000/customer)

• Funding levels are dependent upon project gas-saving potential.• Rebates are also available for qualifying implemented gas-saving

measures for even more bottom-line savings.• When improvement measures are implemented, operating costs are

reduced and the efficiency of your existing mechanical systems for processing are improved, saving you money and energy.

NOTE: CenterPoint Energy must pre-approve the study before any funding is made available.


Design / Engineering Programs

• Engineering and Certification Assistance• Engineering Assistance• LEED Certification• ENEGRY STAR® Verification Assistance

Program

• Energy Design Assistance • Recommissioning• Process Efficiency• Industrial Heating Study Assistance


Design / Engineering Programs

Engineering and Certification Assistance This program helps customers cover the cost of identifying, implementing and receiving third-party certification for energy efficiency upgrades. It also provides support for customers seeking ENERGY STAR® certification for their buildings.

Engineering

Assistance Program

LEED Certification

Assistance Program

ENERGY STAR®

Verification Assistance

Program

Provides funding

UP to $5,000

$5,000 additional if

qualifying natural gas

technologies are installed

Reimburses customers

UP to $5,000

$5,000 additional following

the completion and

submission of application

Reimburse customers for

the cost of the ENERGY

STAR® application

verification

UP to $1,500per building

CenterPointEnergy.com/EngineeringPrograms


Energy Design Assistance

• Energy modeling• Predicted energy use• Strategies for energy savings• Projected energy cost savings for those

strategies

A free, comprehensive approach to energy savings that includes:


Recommissioning

1. Study Funding• Funding is a function of the customer’s usage and

predicted savings potential• Up to 75% of study cost, not to exceed $5,000

2. Implementation Rebates• $5.00/Dth saved• Must have 1 year to 10 year payback


Process Efficiency

What is the Process Efficiency program?The Process Efficiency program is designed to provide funding for an energy efficiency study to identify, scope, and ultimately lead to the implementation of energy-saving opportunities.

The project is delivered in 3 phases: Phase 1 - Identification: A high-level analysis will be conducted to identify the energy conservation potential of the facility. This is completed at no cost to the

customer.

Phase 2 - Scoping: CenterPoint Energy will provide additional support and resources to define and provide recommendations for energy-saving

opportunities.

Phase 3 – Implementation: CenterPoint Energy will work with the customer to put in place a schedule with energy-saving goals and cost-savings estimates.

Measures implemented as a result of this schedule will be eligible for CIP rebates to offset the cost of the facility upgrades.


Energy Data Portal


REBATE PROCESSING GUIDELINES


Rebate Processing Steps

Simple steps to receive a rebate for your customers:

1. Use our online fill-and-print forms to apply for rebates as soon as projects are completed.

2. Email or mail-in rebate form along with required paperwork. Allow 6-8 weeks for rebate processing.Email: [email protected]: Commercial Rebate Processing

CenterPoint EnergyPO Box 59038Minneapolis, MN 55459

3. Rebate applications must include a dated copy of the paid, itemized invoice(s). Invoices must include brand, complete model numbered, purchaser’s name and installation address.


Questions?

Maintaining Your Steam or Hydronic Boiler System

Joel V. Carberry, PE

V.P. – PBBS Equipment Corp

Since 1955

Family Owned and Operated

Specializing in Boilers and Boiler systems.

Me? One of the 2nd Generation 35 Years in the business

Little Bit about us

70

• In the beginning it was Steam

• They weren’t really boilers, they were machines

• Steam powered tractors• Steam Engines

• Today, Boiler size is still referenced in Horsepower.

A Little History…

71

• Then they took the wheels off

• “Stationary Engineer”• Boilers became a central

heat source

• Still Steam

A Little History…

72

A Little History

• Hydronics quietly entered the boiler heating world circa 1875.

• Gravity Circulation• Hot water rises

• Forced (pumped) circulation became feasible after WWII

73

A Little History

•Why the switch (stm > wtr)

•Safety!•Ease of operation•Lower temperature•NO, not efficiency

74

Changes…

75

Changes…

76

Boilers are more compact

Higher efficiency

Higher level of control

Easier to operate

Temperamental

Systems

STEAM

• High energy• High Temperature• Its own prime mover

• Water treatment• Traps• Maintenance

HYDRONIC

• Lower energy• Lower Temp• Higher efficiency• Better control

• Electrical use• More Moving parts

77

Steam systemsBOILER

Steam Traps

Condensate Recovery

Ancillary Equipment

Water Treatment

Maintenance

78

Hydronic systemsBOILER

Expansion and Air elimination

Circulating Pumps

Control Valves

Water Treatment

Maintenance

79

Water Treatment - Hydronic

80

Still needs protectionBacterial in Temperatures from 100 – 150 F


81


Oxygen Corrosion a real threat.


82


Oxygen Corrosion a real threat.

Even Glycol degrades with time.


83

Still needs protectionSediment

Iron, bacteria, calcium

Water TreatmentAppropriate Chemical Concentrations

Regular Testing

Maintenance - Hydronic

84


Regular Testing

Filtration (Side Stream)


85


86

Sediment moving through the system causes mechanical failure

Premature pump wear / imbalance

Valve seat damage

Valve stem wear

Regular inspection of Valves for Leaks / freedom of movement

Regular inspection of Pumps for leaks, vibration, and Amp Draw?

Water Treatment – Steam Systems

87

Calcium ScaleHard Water

Boiler TDS

Water Treatment – Steam Systems

88

Calcium ScaleHard Water

Boiler TDS

Oxygen Attack

Condensate Line Corrosion

Steam Traps1 Steam Trap on 10 psig System $100 per year

Regular Testing

Collect the CondensateSame Trap working, Same cost.

Regular Testing

Condensate Return Tank/Pump

Maintenance – Steam System

89


Regular Testing

Regular Blowdown

Ancillary EquipmentBoiler Feed Tank / Pumps

Water Softener

Maintenance – Steam System

90

Water Side

Fire Side

Burner

The Boiler

91

Highest Efficiency

Reliability

The Goal

92

Water Side

93

Calcium Scale/Sediment

Water Treatment

Regular Blowdown (steam)

Annual InspectionOpen and Inspect

Flush and Clean

3 to 5 years??

Fire Side

94

Combustion Byproducts

Dirt, Dust. Temperamental

Regular Tune upsMore than once per year

Annual InspectionOpen and Inspect

Flush and Clean

3 to 5 years??

Today

4 pages of maintenance

15 Pages of troubleshooting

Burners

• Need to be inspected• Air filtration critical• Combustion Checks…

Burners

• Need to be inspected• Air filtration critical• Combustion Checks…• Flame sensors and ignitors

Daily Checks

STEAM BOILER

• Check Water Level• Blowdown LWCO• Blowdown Boiler• Record Feedwater Temp/Press• Record Stack Temp / Firing Rate• Record Fuel Pressure• Visually Check Flame

WATER BOILER

• Record Supply and Return Temp• Record Supply and Return Press.• Record Stack Temp / Firing Rate• Record Fuel Pressure• Visually Check Flame

Weekly Checks

STEAM BOILER

• Check LWCO Operation• Check Air Intakes and filters• Check Operating Controls• Record Flame Signal

WATER BOILER

• Check Air Intakes and filters• Check Operating Controls• Record Flame Signal

Monthly Checks

STEAM BOILER

• Inspect Burner• Inspect for Flue Gas Leaks• Check Fuel Pressure Switches• Combustion Analysis

WATER BOILER

• Inspect Burner• Inspect for Flue Gas Leaks• Check Fuel Pressure Switches• Combustion Analysis

Annual Checks

STEAM BOILER

• Inspect Burner• Inspect/Clean Fireside • Inspect*/Clean Waterside• Inspect/replace ignition• Combustion Analysis• Check Gas Valve Tightness• Review Water Treatment

WATER BOILER

• Inspect Burner• Inspect/Clean Fireside • Inspect*/Clean Waterside• Inspect/replace ignition• Combustion Analysis• Check Gas Valve Tightness• Review Water Treatment

Write it Down

Steam Water

Sum it up…

• If you want a reliable boiler system, maintenance is Key.• Monitor and record your boiler readings daily.• Take water samples and analyze on a regular basis• Check the Water Level or Flow safeties on a regular basis• Annually check Burner and fireside condition

• CLEAN AS NECESSARY• Replace Flame Ignitors and Sensors

• Annually check Waterside condition of boiler• CLEAN AS NECESSARY

• A Lot Can Happen in 365 Days

Locations

105

Milwaukee AreaN59W16500 Greenway CircleMenomonee Falls, WI 53051t: 800-236-9620p: 262-252-7575

Madison Area380 Progress DriveCottage Grove, WI 53527t: 800-236-6604p: 608-839-8489

Green Bay Area2283 Sachs CourtGreen Bay, WI 54313t: 800-236-3675p: 920-662-0300

Stevens Point Area320 Saeco DrivePlover, WI 54467t: 800-236-7410p: 715-344-7310

Twin Cities Area 3329 Mike Collins DriveEagan, MN 55121t: 800-236-9742p: 651-686-7227

Fargo Area4102 14th Ave N Unit 19Fargo, ND 58102t: 877-865-1646p: 701-356-1002

2020 seasonal energy management seminar 2020 presentation.pdf2020 seasonal energy management...

Documents