Thermoeconomic Evaluation Of A Modified Kalina Power Cycle For Dual Cooling Application

ABSTRACT

The principles and operation of Kalina power cycle forms the bases for this research work. The goal is to convert waste heat from thermal power plants to useful energy in order to increase efficiency and maximize profit with zero environmental pollution. Over the years alot of modifications have been made to maximize the product of the Kalina power cycle from only electricity to power and cooling. This work introduces a new modification to Kalina power cycle by producing electricity with double cooling application from the same plant. which is a new concept in energy saving systems. Energy, exergy and cost balances of all the plant components were carried out. The cost of the product, the cost of fuel and the life cycle cost analysis and the payback period of the plant were determined. The results show that a turbine output of 299.6KW of power was achieved with cooling capacity of 543.3KW and 534.1KW  from the main system and the subsystem with exergy efficiency of 17.67%. The purchase equipment cost of the plant stood at $468,833.34 while the life cycle cost is $118,586.9 with a payback period of 6 years.