1. PRIEN / PIAA Meeting April 30, 2009 Pfizer Caguas
Measuring Operational Efficiency
Hilario J. Negrón
(787) ext 3223
(787)

2. Major Energy Users Boiler System Chillers Electricity
Company Confidential © 2005 Abbott
Measuring Operational Efficiency, April, 2009

3. Boiler System Efficiency – Lbs / gal Fuel Oils Mass (Btu / lbm) Volume
(Btu/gal)
Ethanol
12,800
76,152
Propane
21,646
81,855
Diesel
19,110
138,110
Company Confidential © 2005 Abbott
Measuring Operational Efficiency, April, 2009

4. Theoretical Efficiency
Boiler System
Boiler efficiency 80%
Saturated Steam 120 psig
Enthalpy – Btu / lbm
Theoretical Efficiency
(Lbs / gal)
Ethanol
62.78
Propane
67.48
Diesel
113.86
Company Confidential © 2005 Abbott
Measuring Operational Efficiency, April, 2009

5. Boiler System Impact Fuel Oil Heating Value Economizer (10 °F dT)
Boiler Passes (3 – 4 passes)
Chemical Treatment / Blowdown
Fire Side Cleaning
Water Feed Quality (RO Installation)
Insulation
Flue Gases
Company Confidential © 2005 Abbott
Measuring Operational Efficiency, April, 2009

6. Centrifugal Chillers Efficiency Measured in KW / Tons
Tons = dT ( Flow) / 2000
Company Confidential © 2005 Abbott
Measuring Operational Efficiency, April, 2009

7. Chiller Efficiency Impact
Variable Speed Design
Load Percentage (75% target)
Setpoint temperature
(1°F – 1%-2%)
Chemical Treatment
(10% - 35%)
Condenser Water Temp
Water Flow
Approach Temperature
Company Confidential © 2005 Abbott
Measuring Operational Efficiency, April, 2009

8. Company Confidential © 2005 Abbott
Measuring Operational Efficiency, April, 2009

9. Company Confidential © 2005 Abbott
Measuring Operational Efficiency, April, 2009

10. Efficiency Summary Actual Steam North 113 Lbs/gal Steam South
HVAC North
0.77 kw/ton
HVAC South
0.71 kw/ton
Electricity / Power
Kw / unit area
Kw / production
Water Recycling
Percentage
Company Confidential © 2005 Abbott
Measuring Operational Efficiency, April, 2009