The Effect of the Direct Contact Heat Exchanger on Steam Power Plant

An actual power plant, which is the power plant of Iron and Steel Factory at Misurata city in Libya , has been modeled using Matlab in order to compare its results to the actual results of the actual cycle. This paper concentrates on two factors: a- The comparison between exergy losses in the actual cycle and the modeled cycle. b- The effect of extracting pressure on temperature water at boiler inlet. Closed heat exchangers used in this plant have been substituted by open heat exchangers in the current study of the modeled power plant and the required changes in the pressure have been considered. In the following investigation the two points mentioned above are taken in consideration.

Authors:

• Mohamed A. Elhaj
• Salahedin A. Aljahime

Keywords:

• Steam Power Plant
• Contact Heat exchanger
• Exergy
• Cycle Efficiency.

References:

[1] Operation manual of feed water heater for complex iron and steel
misurata power, 1982.
[2] Mostafa Makhzom, Exergy Analysis for Cogeneration Plant, the 7th of
October University, 2009.
[3] Jaan Kiusalaas, Numerical Methods in Engineering with MATLAB,
Cambridge University Press, 2005.
[4] Cownden, R., Nahon, M., Rosen, M., Exergy analysis of a fuel cell
power system for transportation applications, Exergy Int. J. 1(2)(2001).