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www.dcmlogic.com For Superior Performance NE Biomass Hea:ng EXPO – April 10, 2014 Boiler Monitoring Performance Monitoring Graphical tracking of boiler performance A graph is worth a thousand words Lists of numbers mislead… …plots of numbers reveal!

Boiler Monitoring* ForSuperior* Performance*...Boiler Monitoring* Performance*Monitoring* • Graphical*tracking*of*boiler*performance* • A*graph*is*worth*athousand*words* *

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Page 1: Boiler Monitoring* ForSuperior* Performance*...Boiler Monitoring* Performance*Monitoring* • Graphical*tracking*of*boiler*performance* • A*graph*is*worth*athousand*words* *

www.dcmlogic.com  

For  Superior  Performance  

NE  Biomass  Hea:ng  EXPO  –  April  10,  2014  

Boiler  Monitoring  

Performance  Monitoring  

•  Graphical  tracking  of  boiler  performance  •  A  graph  is  worth  a  thousand  words    Lists  of  numbers  mislead…  

               …plots  of  numbers  reveal!  

Page 2: Boiler Monitoring* ForSuperior* Performance*...Boiler Monitoring* Performance*Monitoring* • Graphical*tracking*of*boiler*performance* • A*graph*is*worth*athousand*words* *

www.dcmlogic.com  

No  Customer  Complaints…  But  Is  Everything  Really  OK?!  

Pellet  F

eed  Ra

te  

Boiler/Bu

ffer  T

emps  

Each  ver:cal  line  =  1  boiler  startup  

31  cycles/day!  

Add  One  Skilled  Technician  With  a  Monitor  on  His  Mobile  Phone...  

Pellet  F

eed  Ra

te  

Boiler/Bu

ffer  T

emps  

Now,  only  10  cycles/day  

Smoother  Heat  Produc:on  

Page 3: Boiler Monitoring* ForSuperior* Performance*...Boiler Monitoring* Performance*Monitoring* • Graphical*tracking*of*boiler*performance* • A*graph*is*worth*athousand*words* *

www.dcmlogic.com  

Cri:cal  Elements  To  Monitor  1.  Short  cycling  is  bad  

Inefficiency,  emissions,  wear  and  tear  Waste  of  oil/propane!  

2.  External  control  of  boilers  can  be  harmful  3.  Boiler  hygiene  ma\ers!  4.  Is  heat  distributed  properly?      

Are  circulators  doing  their  jobs?      Does  distribu:on  interfere  with  hea:ng  plant?  

à  Substan:al  fuel  savings  are  possible!  

Short  Cycling:  Parameter  Choice  Ma\ers!  

Pellet  Bin  Levels  

Scheduled  Time  to  Refill  Green  Boiler  Bin  

Scheduled  Time  to  Refill  Red  Boiler  Bin  

Stop  to  clean  aaer  running  8  hours  

Pellet  F

eed  Ra

te  

Red  takes  over  

Green  takes  over  

Green  takes  over  

Page 4: Boiler Monitoring* ForSuperior* Performance*...Boiler Monitoring* Performance*Monitoring* • Graphical*tracking*of*boiler*performance* • A*graph*is*worth*athousand*words* *

www.dcmlogic.com  

Short  Cycling:  Skillful  Parameter  Adjustments  Bo

iler/Bu

ffer  T

emps  

Pellet  F

eed  Ra

te  

Before   Aaer  Short  Cycling  Boiler  Temp  Spikes  Uneven  Output  

Long  Run  Times  No  Temp  Spikes  Smooth  Output  

Be  wary  of  too  many  cooks…  

“Helpful”  boiler  disable    commands  from  BEMS  

Pellet  F

eed  Ra

te  

External  Boiler  C

ontrol  

Three  VERY  short  cycles!  

Page 5: Boiler Monitoring* ForSuperior* Performance*...Boiler Monitoring* Performance*Monitoring* • Graphical*tracking*of*boiler*performance* • A*graph*is*worth*athousand*words* *

www.dcmlogic.com  

Boiler  Hygiene  

•  Cleaning  the  boiler  can  boost  output  >  10%  – Efficiency  improves  – Fossil  backups  less  likely  to  come  on  – Moving  parts  less  likely  to  bind  and  break    

•  Do  you  have  a  regular,  documented  cleaning  program?  

Heat  Distribu:on:  Circulators  Take  a  Rest  

Circs  turn  off  

Fuel  Feed/Circ  Spe

ed  

Boiler  T

empe

rature  

Temps  spike  

Page 6: Boiler Monitoring* ForSuperior* Performance*...Boiler Monitoring* Performance*Monitoring* • Graphical*tracking*of*boiler*performance* • A*graph*is*worth*athousand*words* *

www.dcmlogic.com  

Heat  Distribu:on:    Too  Much  of  a  Good  Thing!  

Tempe

ratures   Boiler  

Boiler  Off  

Circ  Off  

Fuel  Feed/Circ  Spe

ed  

25  Minutes  

Buffer  Tank  Cooled  by  Run-­‐on  Circ  

Pellet  Feed  

Circ  Speed  

Monitoring  +  Adjustment  =  Savings  

Parameters  changed  

Daily  Fuel  Consump:on  

Cumula:ve  Fuel  Consump:on  

Cumula:

ve  Daybins  

Daybins  p

er  Day  

Before   Aaer  

Parameters  changed