Thermodynamic simulation and pinch analysis of KCS11


Department of Mechanical Engineering, K.N. Toosi university of technology, Mollasadra St., Tehran, Iran


In this study, a reputable Kalina cycle system, KCS 11, is simulated and analysed. Within this efficient cycle, there are three heat exchangers: the first heat exchanger is designated for heat absorption from the heat source, the second heat exchanger is designed for heat release to the cold source, and the third heat exchanger is designed for energy recovery. In order to achieve precise simulation, a variation of heat capacity is considered. A finite difference method is, therefore, implemented in consideration of the amount of heat transfer in each heat exchanger. In this study, combustion exhaust is considered as the heat source, while cooling water circulates in the condenser. The effect of the product of the overall heat transfer coefficient and the heat transfer area on decisive parameters including the net power output and the efficiency is investigated. Moreover, the influences of the studied parameters are examined on two important pinch technology related curves; these are: the composite curve and the grand composite curve. The results indicated that although increasing the heat transfer surface in each of the heat exchangers boosts the power output, in some cases, it reduces the cycle’s efficiency.


[1]Kalina A.I., Combined-Cycle System with Novel Bottoming Cycle, Journal of Engineering for Gas Turbines and Power, (1984)106(4): 737-742.

[2] Madhawa Hettiarachchi H. D., Golubovic M., Worek, and Y. Ikegami W. M., The Performance of the Kalina Cycle System 11(KCS-11) with Low-Temperature Heat Sources, Journal of Energy Resources Technology (2007)129(3): 243-247.

[3]Zhang X., He M., Zhang Y., A Review of Research on the Kalina Cycle, Renewable and Sustainable Energy Reviews (2012) 16(7): 5309-5318.

[4]Li X., Zhang Q., Li X., A Kalina Cycle with Ejector, Energy (2013)54: 212-219.

[5] He J., Liu C., Xu X., Li Y., Wu S., and Xu J., Performance Research on Modified KCS (Kalina cycle system) 11 without Throttle Valve, Energy (2014)64: 389-397.

[6] Yue C., Han D., Pu W., and He W., Comparative Analysis of a Bottoming Transcritical ORC and a Kalina Cycle for Engine Exhaust Heat Recovery, Energy Conversion and Management (2015) 89(0): 764-774.

[7] Yari M., Mehr A. S., Zare V., Mahmoudi S. M. S., Rosen M. A., Exergoeconomic Comparison of TLC (Trilateral Rankine Cycle), ORC (Organic Rankine Cycle) and Kalina Cycle Using a Low Grade Heat Source, Energy (2015)83: 712-722.

[8] Mlcak  H., Kalina Cycle Concepts for Low Temperature Geothermal, Geothermal Resources in Geothermal Resources Council Transactions (2002) 707-713.

[9]  Sun F., Ikegami Y., Jia B., A Study on Kalina Solar System with an Auxiliary Superheater, Renewable Energy (2012) 41: 210-219.

[10] Wang J., Yan Z., Zhou E., and Dai Y., Parametric Analysis and Optimization of a Kalina Cycle Driven by Solar Energy. Applied Thermal Engineering (2013)50(1):408-415.

[11]Ogriseck S., Integration of Kalina Cycle in a Combined Heat and Power Plant, A Case Study, Applied Thermal Engineering (2009) 29(14–15): 2843-2848.

[12]Singh O.K., Kaushik S.C., Energy and Exergy Analysis and Optimization of Kalina Cycle Coupled with a Coal Fired Steam Power Plant, Applied Thermal Engineering (2013)51(1–2): 787-800.

[13]Bram S., De Ruyck J., Exergy Analysis and Design of Mixed CO2/Steam Gas Turbine Cycles, Energy Conversion and Management (1995)36(6–9): 845-848.

[14]Anantharaman R., Abbas O.S., Gundersen T., Energy Level Composite Curves—A New Graphical Methodology for the Integration of Energy Intensive Processes, Applied Thermal Engineering, (2006) 26(13): 1378-1384.

[15] Esen H., Inalli M., Esen M., and Pihtili K., Energy and Exergy Analysis of a Ground-Coupled Heat Pump System with Two Horizontal Ground Heat Exchangers, Building and Environment, (2007) 42(10): 3606-3615.

[16] Ghaebi H., Amidpour M., Karimkashi S., and Rezayan O., Energy, Exergy and Thermoeconomic Analysis of a Combined Cooling, Heating and Power (CCHP) System with Gas Turbine Prime Mover, International Journal of Energy Research, (2011)35(8): 697-709.

[17]Arriola-Medellín A., Manzanares-Papayanopoulos E., Romo-Millares C., Diagnosis and Redesign of Power Plants Using Combined Pinch and Exergy Analysis, Energy (2014)72(0): 643-651.

[18]Kim K.H., Ko H.J., Kim K., Assessment of Pinch Point Characteristics in Heat Exchangers and Condensers of Ammonia–Water Based Power Cycles, Applied Energy (2014)113(0): 970-981.

[19]Schaefer L.A., Heat Exchanger Mean Temperature Differences for Refrigerant Mixtures, in Mechanical Engineering, Georgia Institute of Technology (1997)

[20]Linnhoff B., Sahdev V., Pinch Technology, in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH Verlag GmbH and Company KGaA (2000).

[21]Steam and Power Systems, in Industrial Boilers and Heat Recovery Steam Generators, CRC Press (2002).

[22]Ibrahim O.M., Klein S.A., Thermodynamic Properties of Ammonia-Water Mixtures, ASHRAE Transactions (1993)1495-1502.