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论文类型：期刊论文

发表时间：2016-05-25

发表刊物：APPLIED THERMAL ENGINEERING

收录刊物：SCIE、EI、Scopus

卷号：101

页面范围：432-445

ISSN号：1359-4311

关键字：District heating system; Distributed variable frequency speed pump; Economic frictional factor; Branched network; Energy saving

摘要：Optimization of the district heating (DH) piping network is of vital importance to the economics of the whole DH system. The application of distributed variable frequency speed pump (DVFSP) in the district heating network has been considered as a technology improvement that has a potential in saving energy compared to the conventional central circulating pump (CCCP) district heating system (DHS). Economic frictional factor is a common design parameter used in DH pipe network design. In this paper, the mathematical model of economic frictional factor based on DVFSP DHS is established, and influence factors are analyzed, providing a reference for engineering designs for the system. According to the analysis results, it is studied that the energy efficiency in the DH system with the DVFSP is compared with the one in the DH system with conventional central circulating pump (CCCP) using a case based on a district heating network in Dalian, China. The results of the study on the case show that the average electrical energy saved is 49.41% of the one saved by the DH system with conventional central circulating pump in the primary network. Crown Copyright (C) 2016 Published by Elsevier Ltd. All rights reserved.