摘要：A cooling water system requires a large amount of power to send water to coolers installed at high platform. In spite of pressure drop, most power is not consumed, but turns to potential energy. The potential energy will turn back to pressure once cooling water goes down from high, but the pressure is wasted in current cooling water system. In this work, hydro turbines are used to recover surplus pressure. In comparison with Main-Auxiliary pump structure that is used to reduce pressure head of main pump, a new superstructure contains Main-Auxiliary pump structure and Main-Branch hydro turbine structure is proposed. The hydro turbines can be installed on the main pipeline to recover surplus pressure turned from potential energy, or on branch pipeline to recover surplus pressure provided by auxiliary pump, and to balance pressure between parallel branches. MINLP algorithm is employed to optimize pump network and hydro turbine network simultaneously. The results show that hydro turbine has greater energy saving potential than auxiliary pump. Structure with Main-Auxiliary pump and Main Branch hydro turbine is the most energy saving and cost saving configuration. Two case studies demonstrated that the optimal structures save up to 28.2% and 31.7% of the total annual cost, and save 36.8% and 39.1% of the total energy consumption. (C) 2017 Elsevier Ltd. All rights reserved.

关键字：Energy recover Cooling water system Pump network Hydro turbine MINLP

ISSN号：0360-5442

卷、期、页：卷: 139 页: 329-340

发表日期：2017-11-15

期刊分区（SCI为中科院分区）：二区

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

发表期刊名称：ENERGY

参与作者：冯霄

通讯作者：马嘉泽

第一作者：王彧斐

论文类型：期刊论文

论文概要：马嘉泽,王彧斐,冯霄，Energy recovery in cooling water system by hydro turbines，ENERGY，2017，卷: 139 页: 329-340

论文题目：Energy recovery in cooling water system by hydro turbines