Thermodynamic Optimization of the HAT Cycle Plant Structure—Part II: Structure of the Heat Exchanger Network

Author:

Lazzaretto A.1,Segato F.1

Affiliation:

1. Department of Mechanical Engineering, University of Padova, via Venezia 1, 35131 Padova, Italy

Abstract

In Part I of the paper a thermodynamic optimization methodology was presented for the “basic” configuration of a humid air turbine cycle plant in which the heat exchange section is viewed as a black-box separated from the rest of the plant (basic components), having a fixed structure. The results of the optimization apply to all the heat exchanger networks that fulfill the optimal boundary conditions between the black-box and the rest of the plant. The aim of this part is to define these heat exchanger networks using a combination of Pinch Technology and Second Law insights. The possibility of a further reduction in the number of heat exchangers is then investigated in order to achieve the best compromise between high performances and structural simplicity.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Reference7 articles.

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3. Sama, D. A. , 1995b, “Differences between Second Law Analysis and Pinch Technology,” J. Energy Resourc. Technol., 117, pp. 186–191.

4. Chiesa, P., Lozza, G., Macchi, E., and Consonni, S., 1995, “An Assessment of the Thermodynamic Performance of Mixed Gas Steam Cycles: Part B—Water-Injected and HAT Cycles,” J. Eng. Gas Turbines Power, 117, pp. 499–508.

5. Xiao, Y. H., Cai, R., and Lin, R., 1996, “Modeling HAT Cycle and Thermodynamic Evaluation,” Proc. ECOS ’96 Efficiency, Costs, Optimization, Simulation and Environmental Aspects of Energy Systems, P. Alvfors, L. Eidensten, G. Svedberg, and J. Yan, eds., Royal Institute of Technology, Stockholm, Sweden, pp. 211–216.

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