Thermal and Economic Study of a Combined Power and Cooling Cycle

Abstract

An energy crisis has become a global problem which restricts the sustainable growth recently. For this reason,waste heat recovery from different thermal systems has become so important. There are many ways to utilizethe waste heat, and absorption refrigeration systems are one of the best ways to use waste energy. On theother hand, Power plants are at the forefront of industries where energy consumption is most intense. For thisreason, improving the performance of these plants will save energy, water, as well as contribute to the preventionof environmental risks. In this study, a new and a suitable absorption refrigeration system was proposed forrecovering the waste heat from drainage tanks in AL-Zara steam plant in Hama in Syria. In addition, thermal andeconomic analyses were applied to study the feasibility assessment of using waste heat based on the measureddata from Al-Zara steam power plant. The absorption refrigertaion cycle of the drainage tank waterworks byAmmonia-Sodium Thiocyanate as a working solution, which achieves the highest coefficient of performance atavailable thermal conditions where reaches to (0.49). The profitability for three cooling units reaches to (37206), comparing to similar compression cooling cycle in the same capacity.