Evaluation of the Primary Energy Saving and Environmental Benefit Potential Performance of the Micro-Cogeneration System Considering Both Plant and Demand Side Characteristics

抄録

Combined heat and power (CHP) and tri-generation is that considered as a promising technology for efficient energy supply. The aim of this paper is the discussion and evaluation method about the energy saving and emission reductions of the micro-cogeneration system composed of the primary movers (micro turbine, reciprocating internal combustion engine, fuel cell, stirling engine), auxiliary boiler and thermal storage system, during the optimal implement of the cogeneration system, the plant side and demand side characteristic were also considered. This study clarifies that a proper energy saving and assessment of pollutant emission reduction should consider the performance both the centralized production and distributed energy system. The effects of feed-in electricity from grid and the power to heat ratio both in plant and demand side were analyzed in detail. The theoretical potential of primary energy saving and environment benefits were carried out with reference power unit characteristics and variable heat to power ratio in demand-side, in comparison with the power and heat separate production. The graph highlights the ranges of technical criteria with better primary energy saving and pollution emissions reduction for micro cogeneration (tri-generation) than separate production system. The results can be used as good references for appropriate micro cogeneration implementation and determining the micro cogeneration optimal operational periods considering specific electricity and heating load profiles.