A public domain finned-tube heat exchanger simulation program, EVAP-COND ver. 3.0, has been equipped with an evolutionary algorithm-based module, called ISHED Intelligent System for Heat Exchanger Design, which facilitates optimization of refrigerant circuitry. Previous studies demonstrated that the best circuitry designs developed by the evolutionary methods in ISHED yielded capacity improvements over the original manufacturers designs. Since evolutionary methods inherently involve the element of randomness, they do not guaranty achieving the optimum outcome within a given optimization run. This paper presents optimization experiments with ISHED and provides recommendations for selecting optional run parameters to expedite convergence to the optimal circuitry designs. This paper also presents the implementation of a design constraint which forces all tube connections on one side of the heat exchanger to be short return bends between two neighboring tubes; i.e. so that each connected pair of tubes resembles a large hairpin, and evaluates this design constraints influence on the optimization process.
Proceedings Title: 23rd IIR International Congress of Refrigeration
Conference Dates: August 21-26, 2011
Conference Location: Prague, -1
Pub Type: Conferences
Condenser, evaporator, heat exchanger, optimization, refrigerant circuitry, vapor compression