文献类型：期刊文献

中文题名：制冷机房冷冻水和冷却水变流量解耦控制策略

英文题名：Control strategy of variable flow between cooling water and chilled water in chilled plant

作者：蒋小强[1,2];龙惟定[3];李敏[2]

机构：[1]同济大学机械工程学院,上海201084;[2]广东海洋大学工程学院,广东湛江524025;[3]同济大学中德工程学院,上海201084

年份：2010

卷号：33

期号：6

起止页码：6

中文期刊名：重庆大学学报（自然科学版）

外文期刊名：Journal of Chongqing University

收录：CSTPCD、、EI(收录号：20103113110956)、Scopus(收录号：2-s2.0-77955021660)、CSCD2011_2012、北大核心2008、北大核心、CSCD

基金：上海市科学技术委员会专项资助项目(09DZ1200802)

语种：中文

中文关键词：制冷机房;变流量;控制策略;冷却水;冷冻水

外文关键词：chilled plant; variable flow; control strategy; cooling water; chilled water

中文摘要：为降低制冷机房运行能耗,提出了一种基于正交试验分析法的变流量变温差控制策略。首先介绍了变流量变温差的提出和实现思路,然后建立了螺杆式冷水机组和水泵设备模型,对模型进行编程并植入TRNSYS软件进行了模拟及验证;最后建立了由冷水机组和水泵组成的地表水源制冷机房仿真平台,并在该平台上进行二次正交回归试验,得到了制冷机房总功率与冷负荷、冷却水进水温度、冷却水流量、冷冻水流量和冷冻水供水温度五因素的经验关联式,再通过数据处理,得到不同冷负荷和冷却水进水温度下,使制冷机房总功率最小的冷冻水流量、冷却水流量和冷冻水供水温度的优化值。结果表明,某工况下变流量变温差控制策略下的制冷机房总功率相对定流量变供回水温差和传统变流量定温差两种控制模式下的总功率,分别下降了14.023 kW和4.94kW;变流量变温差法比传统变流量定温差法的节能能力提高54.6%。

外文摘要：In order to reduce energy consumption of chilled plant, a new control strategy with variable flow and variable temperature for all-variable chilled plant based on orthogonal experimental analysis is presented. The presentation and the implementation idea of that control strategy are firstly introduced. Secondly, a screw chiller model and a pump model are established, and these two models are then coded and embedded into the TRNSYS software to simulate arid verify. Finally, a surface-water chilled plant simulation platform composed of chillers and pump are developed based on TRNSYS. By using conducting quadratic orthogonal regression experiment on that platform, the empirical correlation formula between the total power of chilled plant and cooling load, supply cooling water temperature, cooling water flow, chilled water flow, and supply temperature of chilled water is obtained. By data processing, the optimized values of chilled water flow, cooling water flow, and supply temperature of chilled water which make the total power of chilled plant minimum under different cooling load and supply cooling water temperature are also gotten. Result shows that the new control strategy can decrease the power of chilled water plant by 4.94 kW and 14. 023 kW respectively relative to the constant speed and the conventional variable speed, the saving power can increase by 54.6% relative to the corresponding conventional variable speed plant does.