Exergoeconomic analysis of condenser type heat exchangers |
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| Affiliation: | 1. Department of Mechanical Engineering, Faculty of Engineering and Architecture, University of Trakya, Edirne 22030, Turkey;2. Department of Mechanical Engineering, Faculty of Engineering, University of Cumhuriyet, Sivas 58140, Turkey;1. Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;2. Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;1. Key Laboratory of Solar Thermal Energy and Photovoltatic System, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, China;2. University of the Chinese Academy of Sciences, Beijing, 100049, China;1. Faculty of Mechanical Engineering, Urmia University of Technology, Urmia, Iran;2. Mechanical Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran |
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| Abstract: | In this study, an exergoeconomic analysis of condenser type parallel flow heat exchangers is presented. Exergy losses of the heat exchanger and investment and operation expenses related to this are determined with functions of steam mass flow rate and water exit temperature at constant values of thermal power of the heat exchanger at 75240 W, cold water mass flow rate and temperature. The inlet temperature of water is 18 °C and exit temperatures of water are varied from 25 °C to 36 °C. The values of temperature and pressure of saturated steam in the condenser are given to be Tcon=47 ° C and Pcon=10.53 kPa. Constant environment conditions are assumed. Annual operation hour and unit price of electrical energy are taken into account for determination of the annual operation expenses. Investment expenses are obtained according to the variation of heat capacity rate and logarithmic mean temperature difference and also heat exchanger dimension determined for each situation. The present analysis is hoped to be useful in determining the effective parameters for the most appropriate exergy losses together with operating conditions and in finding the optimum working points for the condenser type heat exchangers. |
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