skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Computer program models cogeneration system, and results in energy cost reduction

Journal Article · · ASHRAE J.; (United States)
OSTI ID:5868189

Reports on the cogeneration system in operation at Great Western Savings in Northridge, California. Details include the reasons for using a computer program, how and why the Southern California Gas Co. was involved, the inputs required for a computer run, and the advantages of using the computer program. The cogeneration system is comprised of 3 generator sets rated at 560-kW each. All generator sets run on natural gas which is compressed to 215 psig to be used by the turbines. The inlet air to each turbine can be cooled to 60F during hot weather to obtain maximum output from each generator. The electrical demand of the bank's computer and office buildings is large enough that it requires all electricity generated by the cogeneration plant, therefore nothing is sold back to the utility. The buildings were divided into 34 zones. The inputs that described the features of each zone were wall types, wall areas, glass types, percentage glass, people loads (number of, time in building and their average heat loss), lighting loads (watts per square foot, type of lighting), and any extra space loads that might add heat (e.g. computers). To execute the Loads program, the output from the Response Factor program was needed along with the effect of any infiltration or outside air mixing. Discusses the application of systems analysis to air side systems and determined energy consumption. Concludes that the fast turnaround time, the numerous equipment options, and the accuracy of the calculations makes the program a useful tool for any cogeneration feasibility study.

Research Organization:
Southern California Gas Co., Los Angeles, CA
OSTI ID:
5868189
Journal Information:
ASHRAE J.; (United States), Vol. 25:1
Country of Publication:
United States
Language:
English