<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">In this paper a problem is discussed of thermal degradation of shell-and-tube recuperative feed-water heaters due to heat transfer surface fouling. Application (to an example steam cycle of power plant) of DIAGAR software system intended for the analysing of impact of degradation of a particular heat exchanger on whole recuperative system performance, is presented. On the basis of the systematically performed simulative calculations it was concluded that the degradation of feed-water heaters of the lowest extraction pressure results in an additional load imposed on the heaters of higher extraction pressures, moreover it was estimated that the degradation of the heaters due to presence of sediments of the thermal resistance reaching 5*10-4 m2*K/W, has resulted in the drop of turbine set efficiency by about 0.3%. Such drop depends on a given configuration of degree of degradation of particular feed-water heaters applied in a considered turbine set.</abstract>

In this paper a problem is discussed of thermal degradation of shell-and-tube recuperative feed-water heaters due to heat transfer surface fouling. Application (to an example steam cycle of power plant) of DIAGAR software system intended for the analysing of impact of degradation of a particular heat exchanger on whole recuperative system performance, is presented. On the basis of the systematically performed simulative calculations it was concluded that the degradation of feed-water heaters of the lowest extraction pressure results in an additional load imposed on the heaters of higher extraction pressures, moreover it was estimated that the degradation of the heaters due to presence of sediments of the thermal resistance reaching 5*10-4 m2*K/W, has resulted in the drop of turbine set efficiency by about 0.3%. Such drop depends on a given configuration of degree of degradation of particular feed-water heaters applied in a considered turbine set.

Analysis of fouling thermal resistance of feed-water heaters in steam power plants

Polish Maritime Research

In this paper a problem is discussed of thermal degradation of shell-and-tube recuperative feed-water heaters due to heat transfer surface fouling. Application...

Analysis of fouling thermal resistance of feed-water heaters in steam power plants

Publié en ligne: 16 juin 2010

Pages: 3 - 8

DOI: https://doi.org/10.2478/v10012-008-0037-1

Mots clés
steam power unit, fouling, feedwater heaters

This content is open access.

Analysis of fouling thermal resistance of feed-water heaters in steam power plants

Publié en ligne: 16 juin 2010

Pages: 3 - 8

DOI: https://doi.org/10.2478/v10012-008-0037-1

Mots cléssteam power unit, fouling, feedwater heaters

This content is open access.

Mots clés
steam power unit, fouling, feedwater heaters