Method for analyzing energy saving ratio evaluating cogeneration unit economy

Abstract

The invention relates to a method for analyzing the energy saving ratio evaluating cogeneration unit economy. The method comprises the steps that the concept of the energy saving ratio is defined, the energy saving ratio is a specific value between the primary energy amount consumed by divided heat and power generation and the primary energy amount consumed by combined heat and power generation when heat energy and electric energy with the same amount and quality are provided; the computational formula of the energy saving ratio is derived; according to the method for calculating the energy saving ratio, the economic analysis of cogeneration units is completed. According to the method, the concept of the energy saving ratio is introduced for the first time, and the comparison of mean level of the primary energy consumed under the combined generation mode and the divided generation mode of the local area is reflected when different types of units produce the same electric quantity and heat quantity under different production modes. Through the method, different types, different capacities and different running modes of the cogeneration units are established on the same benchmark platform for comparison, so that the running economic conditions of the cogeneration units are evaluated more accurately and objectively, and effective reference is provided for carrying out energy-saving supervision on thermoelectric units and putting energy-saving measures into practice.

Description

technical field [0001] The invention belongs to the technical field of energy-saving thermal power generation, in particular to an energy-saving ratio analysis method for evaluating the economical efficiency of a cogeneration unit. Background technique [0002] my country's combined heat and power units range in capacity from 6MW to 300MW, accounting for a large proportion of my country's coal consumption. At present, the main technical indicators for evaluating the economics of cogeneration units include the fuel utilization coefficient (total thermal efficiency) of thermal power plants and the heat-to-power ratio of cogeneration. The economics of different units are closely related to external conditions such as unit capacity and heat supply demand, that is, there are many external conditions that affect coal combustion that are not factors of the unit itself, and it is difficult to scientifically measure the energy consumption level of thermal power units with the current...

AI Technical Summary

Problems solved by technology

The economics of different units are closely related to external conditions such as unit capacity and heat supply demand, that is, there are many external conditions that affect coal combustion that are not factors of the unit itself, and it is difficult to scientifically measure the energy consumption level of thermal power units with the current unit economic indicators

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