建筑节能
建築節能
건축절능
CONSTRUCTION CONSERVES ENERGY
2014年
2期
15-20,52
,共7页
离心式冷水机组%经验模型%最小二乘法%回归模型
離心式冷水機組%經驗模型%最小二乘法%迴歸模型
리심식랭수궤조%경험모형%최소이승법%회귀모형
centrifugal chillers%empirically based models%least square method%regression
介绍了5种常用离心式冷水机组经验回归模型：一次线性模型(SL)、二次线性回归模型(BQ)、多元多项式回归模型(MP)、Gordon-Ng模型、二次齐次多项式回归模型(QHP)。利用①定频、定流量，②变频、定流量，③变频、冷冻侧变流量、冷却侧不变流量，④变频、冷冻侧、冷却侧变流量4种类型的离心式冷水机组共4523组数据进行线性回归分析，结果发现QHP模型对于4种不同类型的机组，模拟效果在5种模型中均最好，均在94%以上，MP模型采用更少的自变量，拟合效果趋近于QHP模型，与QHP模型相差在±2%之间。
介紹瞭5種常用離心式冷水機組經驗迴歸模型：一次線性模型(SL)、二次線性迴歸模型(BQ)、多元多項式迴歸模型(MP)、Gordon-Ng模型、二次齊次多項式迴歸模型(QHP)。利用①定頻、定流量，②變頻、定流量，③變頻、冷凍側變流量、冷卻側不變流量，④變頻、冷凍側、冷卻側變流量4種類型的離心式冷水機組共4523組數據進行線性迴歸分析，結果髮現QHP模型對于4種不同類型的機組，模擬效果在5種模型中均最好，均在94%以上，MP模型採用更少的自變量，擬閤效果趨近于QHP模型，與QHP模型相差在±2%之間。
개소료5충상용리심식랭수궤조경험회귀모형：일차선성모형(SL)、이차선성회귀모형(BQ)、다원다항식회귀모형(MP)、Gordon-Ng모형、이차제차다항식회귀모형(QHP)。이용①정빈、정류량，②변빈、정류량，③변빈、냉동측변류량、냉각측불변류량，④변빈、냉동측、냉각측변류량4충류형적리심식랭수궤조공4523조수거진행선성회귀분석，결과발현QHP모형대우4충불동류형적궤조，모의효과재5충모형중균최호，균재94%이상，MP모형채용경소적자변량，의합효과추근우QHP모형，여QHP모형상차재±2%지간。
This paper first presents five empirically based models for steady-state modeling of cen-trifugal chillers, i.e. Simple linear regression model (SL), Bi-quadratic regression model (BQ), Multivariate polynomial regression model (MP), Gordon-Ng model and Quadratic homogeneous polynomial regression model (QHP). They are applied to predict the coefficient of performance using 4523 chiller data sets from chiller manufacturers. The data sets comprise four broad classifications, including (1) constant speed, con-stant condenser and chilled water flow, (2) variable speed, constant condenser and chilled water flow, and (3) variable speed, constant condenser and variable chilled water flow, and (4) variable speed, variable con-denser and chilled water flow. The regression parameters for each performance model are obtained using least squares method. The comparison demonstrates that QHP model shows the best prediction accuracy for all kinds of data sets (>94%) and MP model has less regression parameters while shows less prediction ac-curacy than QHP model (±2%).
