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Требования к топливной эффективности перспективных когенерационных установок
The fuel aspect of the efficiency of the distributed cogeneration is considered taking into account the wide adoption of highly efficient combined-cycle technologies for centralized power generation and wide adoption of modern hot water boiler with high efficiency. The criterion of fuel-efficiency cogeneration units is derived. It is shown that improving the efficiency of power plants and district heating plants will decrease the effect of fuel economy from small CHP located in centralized generation zones. It is shown that cogeneration plants will always be effective from the point of view of fuel economy in decentralized generation zones, but with the increase in efficiency of gas turbines and gas and diesel engines the comparative effectiveness of cogeneration will decrease. The diagrams of dependence of fuel savings on efficiency of power plants in centralized and decentralized generation zones are shown. It is concluded that with the development of technologies of electricity and heat generation, both centralized and decentralized, the potential of fuel savings from cogeneration on small CHP will decrease, whereas the influence of economic, infrastructural and time factors will increase.