A Study On Approach To Energy Conservation And Application For A Coal-fired Unit

Theory of thermoeconomic analysis and energy conservation potentiality diagnosis for a coal-fired power generating unit is researched. Method of the unit energy conversation diagnosis is put forward. The indexes used to evaluate the unit's performance are discussed. And the generating JinZhou power plant unit No. 6 is analyzed as a living example. The primary research contents of the thesis are as follows: 1. The performance evaluation index system for a coal-fired power- generating unit is researched. That "performance factor"can be used as an index to evaluate the unit's performance are put forward. By "performance factor"objective factors of the unit's operating can be considered synthetically, and the basis of evaluating the unit's operating quality and maintenance level is made. 2. Theory and method of energy conversation potentiality diagnosis for a unit are researched deeply. A perfect and feasible model of energy conversation potentiality diagnosis for a coal-fired power plant is put forward, the unit's losses are divided into three types: operating controllable loss, maintenance controllable loss and uncontrollable loss. Using the unit's performance simulation model, all kinds of objective value and losses are determined. Scientific basis for reducing coal consumption and improving economics of the unit is provided. 3. Theory of energy conversation potentiality diagnosis for a unit is applied to online monitoring of the unit's performance. The performance online monitoring and energy-loss diagnosis system is prepared successfiilly. And the corresponding software is developed. It is of positive affect for improving economics of the unit and realizing the predict maintenance. 4. The calculation principle used in the performance online monitoring system for a coal-fired power-generating unit is researched. The influence to the unit's performance calculation precision caused by some primary parameters"metering error is calculated quantitatively. Guiding for improving the precision of the unit's performance monitoring system is provided in theory.