Analysis of Two Component Systems on Energy Aspect Subtitle as needed (paper subtitle) N.Shankar Ganesh, Department of Mechanical, Kingston Engineering College, Vellore-632002, Tamil Nadu, India nshankar_g@rediffmail.com T.Srinivas CO 2 Research and Green Technologies Centre, School of Mechanical and Building Sciences, Vellore Institute of Technology, (VIT) University, Vellore-632014, Tamil Nadu, India Abstract— Two component systems are considered as more efficient as compared with a single fluid system due to its temperature profile. The two component system is presently utilized in power generation system as the most prominent one with its ideal nature of closer temperature match between hot and cold fluids. On the energy point of view the two component system results higher performance. The various processes involved in the power generation system are analyzed in the present work. The power generation system considered consists of regenerator, heat recovery vapor generator, condenser, mixer, separator, turbine, pump and throttling device. In addition to some of these components, the cooling plant consists of absorber which is similar in operation of condenser. The role of concentration of binary mixture in vapor and liquid phases and vapor fraction has been analyzed in one of the components of the power system. Keywords-aqua-ammonia, heat recovery, mixing, separation I. INTRODUCTION The outline to the processes is adiabatic mixing, separation, pumping and expansion. The mass and energy balances for the components involved in the Kalina cycle have been carried out. It has been identified from literature that Kalina cycle and Organic Rankine cyle (ORC) are considered as suitable power generation technologies for decentralized power generation. Both have their individual merits and demerits. Recently researches are paying much attention on them due to its flexibility in operation and environmentally friendly alternative for power generations. And also the cycle is well suited for recovering heat from low grade waste heat. It has been identified that Kalina cycle is a suitable technology to recover heat from low temperature to medium temperature. Both theoretical and experimental investigations have been carried out on Kalina cycles. A very few configurations only reported in the literature. There is a scope to develop the system with high efficient operation. The following sections develop the thermodynamic design and solutions for the processes as well as components related to the Kalina power plant. The main thermodynamic advantage of the Kalina cycle is boiling/condensing process with variable temperature. Compared to the isothermal boiling/condensing processes in a Rankine cycle, the varying temperature during the heat transfer processes reduces the thermodynamic irreversibility of heat exchange process [1]. The low-grade waste heat cannot be used for steam production in a conventional steam cycle. The alternative way to generate electricity at low temperature is Kalina power system. This process maximizes the power output with a better heat recovery and without demand of additional fuels. Shankar Ganesh and Srinivas [2] developed the performance characteristics for low temperature Kalina power plant using solar energy. The strong solution concentration has been selected as a key parameter in the reported work by the authors. But it restricts the vapor generation limits as it is function of strong solution concentration, liquid concentration and vapor concentration. Therefore to increase the range of variation, instead of strong solution concentration, vapor fraction has been selected as a key parameter in current investigation. Without any problems, ammonia can be used in thermal power installations in a mixture with water. It is cheap and readily available, has no corrosive effect on iron and its alloys, and is soluble in water in any concentration [3]. Radial inflow turbines are ideal for binary cycles to get maximum isentropic efficiencies [4]. The processes investigation to understand the plant has not well reported in the literature. This work is useful to solve power alone [2], cooling alone [5] or power and cooling plant [6, 7] with simplified approach. The main objective of the current work is to develop the processes to solve the power as well as cooling plant with aqua ammonia as a working fluid in a simplified approach. The current work is useful to the researchers in solving and developing new configurations for power generation as well as cooling generation. II. EVALUATION OF BASIC PROCESSES The following sections present the binary mixture processes and analyses to diagnose the processes clearly to assess the power and cooling plants.