深圳大学学报（理工版）
深圳大學學報（理工版）
심수대학학보（리공판）
JOURNAL OF SHENZHEN UNIVERSITY (SCIENCE & ENGINEERING)
2009年
4期
425-431
,共7页
热能动力工程%疏水冷却器%热经济性%矩阵法%热耗变换系数
熱能動力工程%疏水冷卻器%熱經濟性%矩陣法%熱耗變換繫數
열능동력공정%소수냉각기%열경제성%구진법%열모변환계수
thermal power engineering%drain cooler%thermal economy%matrix method%heat rate transformation coefficient
基于热力系统矩阵热平衡方程,建立定功率条件下,疏水冷却器对机组热经济性影响的数学模型.研究加热器不同连接方式,发现热经济性的变化仅与相邻级热耗变换系数、疏水放热量变化幅度及疏水流量相关.运用该模型分别对某N600-16.7/537/537机组和N600-24.2/566/566机组进行计算,结果与热平衡法基本一致,但计算方法较其简捷.
基于熱力繫統矩陣熱平衡方程,建立定功率條件下,疏水冷卻器對機組熱經濟性影響的數學模型.研究加熱器不同連接方式,髮現熱經濟性的變化僅與相鄰級熱耗變換繫數、疏水放熱量變化幅度及疏水流量相關.運用該模型分彆對某N600-16.7/537/537機組和N600-24.2/566/566機組進行計算,結果與熱平衡法基本一緻,但計算方法較其簡捷.
기우열력계통구진열평형방정,건립정공솔조건하,소수냉각기대궤조열경제성영향적수학모형.연구가열기불동련접방식,발현열경제성적변화부여상린급열모변환계수、소수방열량변화폭도급소수류량상관.운용해모형분별대모N600-16.7/537/537궤조화N600-24.2/566/566궤조진행계산,결과여열평형법기본일치,단계산방법교기간첩.
Based on the matrix equation of thermodynamic system, the mathematical model for the effect of drain cooler on thermal economy of unit was derived under conditions of constant power output. It was found that the change of thermal economy was related to the heat rate transformation coefficient, the change of drain water enthalpy and drain water flow. Compared with the thermal balance method, this model is more convenient for calculation. The N600-16. 7/537/537 unit and N600-24. 2/566/566 unit were analyzed by this model and the results were consistent with that by thermal balance method.
