An optimal planning method for cogeneration plants proposed earlier is extended to the case with multiple optimization criteria. Equipment capacities and utility maximum demands are determined so as to minimize both the annual total cost and the annual primary energy consumption in consideration of plants’ operational strategies for energy demand requirements. This problem is considered as a multi-objective optimization one, and a discrete set of Pareto optimal solutions is derived numerically by the weighting method. Through a numerical study on a simple cycle gas turbine cogeneration plant used for district heating and cooling, a trade-off relationship between the economic and energy-saving properties is clarified.

Issue Section:
Gas Turbines: Cogeneration
Topics:
Cogeneration plants, Gas turbines, Pareto optimization, Central heating, Cooling, Cycles, Energy consumption, Optimization, Tradeoffs
1.
Cheney
E. W.
, and
Goldstein
A. A.
,
1959
, “
Newton’s Method for Convex Programming on Tchebycheff Approximation
,”
Numerical Mathematics
, Vol.
1
, pp.
253
–
268
.
2.
Cohon, J. L., 1978, Multiobjective Programming and Planning, Academic Press, New York, p. 13.
3.
Garfinkel, R. S., and Nemhauser, G. L., 1972, Integer Programming, Wiley, New York, pp. 5–7.
4.
Ito
K.
,
Yokoyama
R.
,
Akagi
S.
, and
Matsumoto
Y.
,
1990
, “
Influence of Fuel Cost on the Operation of a Gas Turbine-Waste Heat Boiler Cogeneration Plant
,”
ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER
, Vol.
112
, pp.
122
–
128
.
5.
Land
A. H.
, and
Doig
A. G.
,
1960
, “
An Automatic Method of Solving Discrete Programming Problems
,”
Econometrica
, Vol.
28
, pp.
497
–
520
.
6.
Matsumoto, Y., Yokoyama, R., and Ito, K., 1992, “Optimal Multistage Expansion Planning of a Gas Turbine Cogeneration Plant,” Proceedings of the 6th Congress and Exposition on Gas Turbines in Cogeneration and Utility, Industrial and Independent Power Generation, pp. 43–49.
7.
Witte, L. C., Schmidt, P. S., and Brown, D. R., 1988, Industrial Energy Management and Utilization, Hemisphere Publishing, Washington, DC, pp. 68–69.
8.
Yokoyama, R., Ito, K., and Matsumoto, Y., 1991, “Optimal Sizing of a Gas Turbine Cogeneration Plant in Consideration of Its Operational Strategy,” Proceedings of the 5th International Symposium and Exposition on Gas Turbines in Cogeneration, Repowering and Peak-Load Power Generation, pp. 363–370.
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