Abstract

In Kalina power generation, as well as vapor absorption and refrigeration systems ammonia-water mixture has been used as working fluids. In this work, new MatLab code was developed to calculate the thermodynamic properties which will be used to simulate Kalina cycle. The progam developed in MatLab gives fast calculation of the thermodynamic properties. The correlations proposed by Ziegler and Trepp (1984), Patek and Klomfar (1995) and Soleimani (2007) were used to calculate the property diagrams in MatLab. The solved properties are bubble point temperature, dew point temperature, specific enthalpy, specific entropy, specific volume and exergy. A flowchart was developed to understand the computation of the properties. The property charts that is enthalpy-concentration, entropy-concentration, temperature-concentration and exergy-concentration charts have been prepared. The present work can be used to simulate the power generating systems to get the feasibility of the proposed ideas up to 100 bar. This work can be used to carry out the exergy analysis of Kalina power cycles.

Key words: Ammonia-water mixture, thermodynamic, power generation.