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U.S. Department of Energy
Office of Scientific and Technical Information

Feasibility of cogenerated district heating and cooling for North Loop Project. Energy Management Memorandum TM-82-2

Technical Report ·
OSTI ID:6866842
A thermal-economic analysis has been performed in order to determine feasibility of cogeneration with central heating and cooling for Chicago's North Loop Development Project. This development may encompass nearly 10,000,000 square feet of mixed use including cultural, residential, office and hotel space. It's size and diversity make it an attractive possibility for commercial cogeneration. Heating, cooling and electrical loads were predicted by using energy data according to use and floor area, representative of downtown Chicago. The central facility proposed would supply cogenerated heating for a part of the development's demand and about one half of the cooling demand by means of combined conventional and cogeneration equipment together on the 4-pipe distribution system. Electricity would also be distributed and used to substantially displace purchases. Additional options are also discussed and, if economical, could make implementation more attractive. Four alternatives involving gas turbines and diesels were selected for study and are reported here. The economic choice involves 13.6 MW(e) of gas-turbine cogeneration capacity with an incremental cost of $13,910,000 exclusive of developer's fees. Particularly attractive is a leveraged-lease arrangement which could support a developers fee of 5% based on incremental capital equipment cost and allow a pass through of savings in the form of a 13% cogenerated-energy discount to users, at no incremental capital investment to the operator-leasee. While the lease was taken to be scheduled over 5 years, the resultant energy savings extend over the assumed 25 years of the project and are indexed to inflation and fuel-cost escalation. It would appear that cogeneration could assist economic development of the North Loop Project.
Research Organization:
Illinois Inst. of Tech., Chicago (USA). Dept. of Mechanical Engineering
DOE Contract Number:
FG02-80CS40337
OSTI ID:
6866842
Report Number(s):
DOE/CS/40337-2; ON: DE83005654
Country of Publication:
United States
Language:
English