Determination of Heat Transfer Correlations for Fluids Flowing through Plate Heat Exchangers Needed for Online Monitoring of District Heat Exchanger Fouling

被引：1

作者：

Romanowicz, Tomasz ^{[1
]}

Taler, Jan ^{[1
]}

Jaremkiewicz, Magdalena ^{[2
]}

Sobota, Tomasz ^{[2
]}

机构：

[1] Cracow Univ Technol, Dept Energy, PL-31155 Krakow, Poland

[2] Cracow Univ Technol, Dept Thermal Proc Air Protect & Waste Utilisat, PL-31155 Krakow, Poland

来源：

ENERGIES | 2023年 / 16卷 / 17期

关键词：

plate heat exchangers; thermal resistance of the fouling; Nusselt number correlation; Wilson method; THERMAL-RESISTANCE;

D O I：

10.3390/en16176264

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This article deals with the problem of estimating the degree of fouling of plate heat exchangers (PHEs) used in district heating substations (where the working medium is water). A method for calculating the thermal resistance of fouling is proposed based on a comparison of the thermal resistance of a fouled and clean heat exchanger. The thermal resistance of the heat exchanger for both fouled and clean apparatuses is determined as the inverse of their overall heat transfer coefficient. In the method, the heat transfer coefficients necessary to determine the overall heat transfer coefficient of the clean exchanger are calculated using a modified Wilson method. Moreover, the heat transfer coefficients on the clean heat exchanger plates' cold water side are determined based on experimental tests. The computational algorithm presented in this paper will make it possible to develop software to monitor and thus optimise the operation of district heating substations.

引用

页数：14

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