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Baylor DPS

Baylor > Facility Services > Energy Complex > Cogeneration System

Cogeneration System

The Baylor University Energy Complex plant has a Cogeneration system. This means that it is a "combined system" where both heat and electricity are produced. On the primary side is the natural gas turbine is tied to a generator. On the secondary side, the turbine fires into a steam heat recovery boiler. Steam from this boiler drives a generator, steam feed pump and general heating.

The primary components are:
Type TB5000 Ruston
Gas Turbine Engine

Supplementary Fired HRSG with duct burner,70,000pph at 225 degrees F

Exhaust diverter and bypass stack

Fresh air firing capability

External economizers

Electric Machinery Generator producing 4.0MW

Operational Data:

1.Anticipated kWh production for FY 2003-2004 - 21,300,000 kWh

2.Anticipated total electrical need for facility FY 2003-2004 - 55,739,000 (Estimate An increase to 80,000,000 kWh late 2004 when science and chillers are up and running)

3.Electrical contract expires December 31, 2003 - current rate is $0.0608 kWh

4.Gas contract expires September 30, 2003, current rate is $4.24/mcf

5.Annual Gas Used For Turbine - 400,000 mcf

6.Annual Gas Used For Duct Burners - 33,000 mcf

7.Annual Gas Used For Boiler #3 - 12,000 mcf

8.Average Yearly Maintenance Costs (Over a Five Year Period) - $265,000/yr

9.Reminders:

A.The byproduct steam from turbine exhaust (26,000 LB/hr) is used for absorbers and heating
B.Duct burners are used to supplement exhaust under high loads
C.The gas pressure to turbine is 180 psi and if gas co. had to curtail it curtails that due to high pressure

10.If the turbine were removed it would be required to build or retrofit the waste heat boiler to a steam-generating boiler. Cost? Estimate $1,200,000