摘要：In cooling water systems, conventional cooler networks usually operate in a parallel configuration and traditional pump networks consist of pumps which are installed only on the main supply pipeline. However, a series-parallel configuration of coolers can substantially increase the cooling-water return temperature and reduce its flow-rate as well as the efficiency of the cooling tower, but the pressure drop along pipes would increase correspondingly. This paper presents a novel two-step sequential methodology for the optimisation of cooling-water system (CWS). The first step is to use a thermodynamic model to obtain the optimal cooler network. In the second step, the hydraulic model is established to obtain the optimal pump network with auxiliary pumps installed in parallel branch pipes. The proposed model can identify the optimal distribution of cooling water within the network and the optimal installation locations and pressure head of pumps required for CWS. A case study is presented to demonstrate the effectiveness of the proposed methodology. It can save up to 23.3% of the cooler network cost and additional 11% of the pump network cost after optimisation. (C) 2015 Elsevier Ltd. All rights reserved.

关键字：Cooling-water system Thermodynamic model Hydraulic model Cooler network Pump network Optimisation

ISSN号：1359-4311

卷、期、页：卷: 89 页: 1006-1013

发表日期：2015-10-05

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：APPLIED THERMAL ENGINEERING

通讯作者：孙晋

第一作者：冯霄,王彧斐

论文类型：期刊论文

论文概要：孙晋,冯霄,王彧斐，Cooling-water system optimisation with a novel two-step sequential method，APPLIED THERMAL ENGINEERING，2015，卷: 89 页: 1006-1013

论文题目：Cooling-water system optimisation with a novel two-step sequential method