Optimization of Distributed Trigeneration Systems Integrated with Heating and Cooling Micro-grids
DOI:
https://doi.org/10.13052/dgaej2156-3306.2621Keywords:
Trigeneration, Mixed Integer Linear Program, micro-gas turbines, absorption chillers, District Heating and CoolingAbstract
The article deals with the influence of the amortization period
in the optimization of a distributed urban district heating and cooling
trigeneration system. The model, presented in detail in [1], is based on
a Mixed Integer Linear Program (MILP) and includes a set of microcogeneration gas turbines for producing electricity and thermal energy
and a set of absorption chillers, driven by cogenerated heat, for producing cooling energy. Micro-gas turbines and absorption chillers can be
used instead of purchasing electricity from the grid, producing thermal
energy by boilers and cooling energy by compression chillers. Moreover, various building can be connected each other through a district
heating and cooling network (DHC network). The optimization specifies the kind, the number and the location of cogeneration equipment
and absorption machines, the size and the position of district heating
and cooling pipelines as well as the optimal operation of each component. The objective function takes into account investment cost of
micro-gas turbine, absorption chillers and DHC network, maintenance
costs, operation costs and any income from the sale of electricity.
The aim of the article is to obtain the optimal solution varying the
amortization period of machines and networks, for understanding the
influence of capital costs on the annual total cost, the optimal system
configuration and operation.
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