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Building Heating Systems
Washington, DC General Complex
Installed
(5) Stabilizers in 1995. Were installed on (5) 1.000 HP water tube boilers
using #2 fuel oil. Fuel oil flux analysis for FY 98 vs 97, gave us a savings
of $321,063.12 (an ROI of 1,148%). and FY 99 vs 98 a savings of $247,999.44
(an ROI of 887%). (March 30, 2000) - DC Actual Analyses
Boilers
- New Jersey Bell Atlantic
Weil
Mclean rated @65 HP. (Emissions Results)
| Boiler
# 1 |
Temp |
O2 |
Excess Air |
CO2 |
CO |
Combustion
Efficiency |
| Before (Nov
15/95) |
518 |
14.95 |
215 |
12.85 |
22 |
61.20% |
| After (June
5/96) |
426 |
3.9 |
22 |
4.8 |
8 |
85.40% |
| % |
--- |
-74% |
-90% |
-63% |
-64% |
40% |
| Boiler
# 2 |
Temp |
O2 |
Excess Air |
CO2 |
CO |
Combustion
Efficiency |
| Before (Nov
15/95) |
554 |
15 |
228 |
7.1 |
341 |
60% |
| After (June
5/96) |
523 |
11.5 |
113.2 |
4.6 |
32 |
73% |
| % |
--- |
-23% |
-50% |
-35% |
-91% |
22% |
Average Fuel Savings: 31%
| Pre-Stabilizer |
Post-Stabilizer |
Degree Days
1995 |
Gals
used |
K-Factor |
| 845 |
3,057 |
.2764147 |
| 953 |
3,568 |
.2670964 |
| 1,798 |
6,625 |
.2713962 |
Note: 3.684 Gals/per degree day
|
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Degree Days
1996 |
Gals
used |
K-Factor |
| 1,091 |
2,451 |
.4451244 |
| 986 |
2,823 |
.3492738 |
| 2,077 |
5,274 |
.3938187 |
| Note:
2.539 Gals/per degree day (31.0%
less fuel used per degree day) |
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Notes:
- Gals would have been used = 7,653 or + 31.1%
- Degree Days increased by 279 days or + 13.4%
- Actual Gals used decreased by 1,351 or - 25.6%
- Gals per Degree Day decreased by -1 or -45.1%
Boilers
- Major Telephone Co
"Less fuel used per day. 31% fuel savings."
Boiler
Univ / New Jersey
Kean Actual Analyses
"26%
savings realized in fuel consumption."
Boiler:
Gas
"Savings
@ 16%."
School
System
East
Chicago School System - promised a "guaranteed" savings of 6%,
delivered final results of 27% fuel reduction. "don't know how it
works, but it saves the district lots of money." District so impressed
that they ordered additional units for installation...
<17% natural gas savings>
Therms decreased dramatically by 19,099 or 12.5%
Boiler efficiency increased by 6.6%
Video made of ABC/news-Chicago (Sept 2003) story on bus pollution and
installation of schools boiler system with comments by
facility engineer and superintendent of schools.
US DEPT HUD / Housing Authority (2004)
5U - detailed analyses, photo's & mgt approval
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