Copyright by Max Weishaupt GmbH, D Schwendi

Transkript

1 Improving Energy Efficiency through Burner Retrofit

2 Overview Typical Boiler Plant Cost Factors Biggest Efficiency Losses in a boiler system Radiation Losses Incomplete Combustion Blowdown Stack Losses Boiler Design Excess Air Weishaupt burner as a solution to Excess Air Conclusion Burner installation/retrofit examples Seite 2

3 Typical Boiler Plant Cost Factors 10% 3% 2% 1% 1% 9% Labor Fuel 74% Source: GE Infrastructure Water& Process Technologies Seite 3

4 Biggest Efficiency Losses in a boiler system 1% 76% 20% 100% Example of Losses in a Boiler System 3% Seite 4

5 Efficiency Losses in a boiler system Radiation Losses Insulate where possible Incomplete Combustion Seite 5

6 Complete Combustion with Weishaupt Seite 6

7 Efficiency Losses in a boiler system Blowdown Even with the best pretreatment programs feedwater contains impurities. Water must periodically be blown down to take care of these impurities Improper blowdown causes increased fuel consumption, the need for more chemicals and heat loss Blowdown heat can be recovered and reused in the boiler operations. Stack Losses Biggest Factor in the equation (up to 20%) F of stack temperature equals approx. 1% in energy loss Stack temperature is dependent on the steam pressure (i.e. 100 PSI = 338 F) Older Boilers before 1970 were not built with stack temp. In mind. Here an economizer can help. NOW let s look at Excess Air! Seite 7

8 Combustion with Excess Air Some burners use more than 100% excess air Seite 8

9 Excess Air vs. Oxygen Seite 9

10 Quality Engineered Burner Heads mean REPEATABILITY Low NOx Ultra Low NOx Seite 10

11 Moving Diffuser for Increased Turndown and Low Excess Air Seite 11

12 Linkage Less Control Components Servo drives WFM Main Module 100 & 200 AZL Programming Module Flame Detector Seite 12

13 Conclusion Usually the Conclusion would be to service the burner as well as possible and reduce excess air to the minimum of what the burner can use and still combust environmentally friendly. With Weishaupt a new option is available: Burner Retrofit Let s look at some examples in the Chicago area: Hinsdale Hospital AON Center Seite 13

14 Adventist Hinsdale Hospital, Hinsdale,IL The 436-bed hospital is recognized as a leader in a wide range of medical fields, where university-level care and medical breakthroughs are achieved each day. Seite 14

15 Hinsdale Hospital Savings 13% USD

16 Healthcare Facilities Energy conservation contributes directly to operating income. Research of the Environmental Protection Agency (EPA) shows that facilities that implement energy conservation measures outperform their competitors to be as much as 10% in net operating income. The EPA estimates that for Hospitals: $100,000, in energy savings is Equal to the margin earned from $2,000,000 in new revenues. Regardless the age, high performing hospitals use as little as one-fourth of the energy used by like facilities which are at the bottom of the performance scale. EPA Study, Boosting Your Bottom Line through Improved Energy Use, June 2005

17 AON Center Savings 16% USD Seite 17