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Thermoeconomic Lifecycle Energy Recovery System
Optimization for Central Air-Conditioning System
Using Evolutionary Technique Keywords: Heat Exchanger, Evolutionary Optimization, PFHE, Payback Period. Mehran University Research Journal of Engineering & Technology Volume 31 , Issue 1 Liaquat Ali Khan,Muhammad Shahid Khalil,Fathi Mahfouz Abstract Energy efficient systems are the most desirable systems. Due to huge rise in energy prices and lack of availability of energy, the effective use of energy has become the need of time. Energy recovery both in heating systems as well as in air-conditioning systems saves a lot of energy. In this paper energy recovery system has been designed and optimized for central air-conditioning systems for various ranges. Cost function includes capital cost along with pumping and exergy destruction cost. This shows that installation of energy recovery system with a central air-conditioning has a significant amount of saved energy and payback period is within a year. PFHE (Plate Fin Heat Exchanger) is designed and optimized using evolutionary optimization. In order to verify the capabilities of the proposed method, a case study is also presented showing that significant amount of energy is recovered at a reasonable payback period. Sensitivity analysis is also done with the energy prices. |