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The current state of cogeneration in Russia is analyzed. It is characterized by a sharp decrease in industrial heat consumption and a reduction in the demand for electricity. As a result many cogeneration plants presently operate under off-design conditions, which change their economic indexes to the worse. The ways of introducing small-scale cogeneration installations are considered, which show promise...
Legislative regulations in favor of combined heat and power (CHP) production have been implemented in many countries. Although these regulations put different emphasis on power production vs. process heat production, they are based on energy quantities and not on exergy. In order to analyze and compare the exergetic consequences of the various legislations, a relative avoided irreversibility (RAI)...
Despite the strong support for exergy in thermodynamics, the industry still relies on energy based power plant efficiencies. The paper exposes errors with energy based efficiencies and improves the graphical representation of plants efficiencies. Among others, energy efficiencies cannot recognised that Combined Heat and Power (CHP) plant may be less efficient than condensing plants or that fossil...
High efficiency heating/cooling networks have a main role in economy decarbonisation. Evaluation of the potential for cogeneration district heating systems at regional level requires environmental, economic and regulatory analyses at different levels. This paper defines a top-down/bottom-up methodology for the analysis of potential cogeneration district heating systems at regional level as tool for...
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