Numerical analysis of fin effect in heat exchangers used in split air conditioners
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Abstract
In this study, heat exchangers in split air conditioners which are one of the most used air conditioning system applications in our daily life are chosen as a subject Most commonly used heat exchanger type is chosen. The mathematical model was validated. The effects of design parameters on thermal capacity and system efficiency have been examined numerically under real-like operating conditions. Although design parameters have a wide working area; variations on pipe diameter, horizontal and vertical distance between pipes, space between fins and fin thickness are examined in this study. The effects of the design variations on heat transfer, pressure decrease and flow velocity under laminar flow and certain boundary conditions were investigated using Finite Volume Methods software for this type of heat exchanger. Nusselt number and heat transfer amount depending on the convection coefficient are found after analyses. Considering these values new optimal design parameters are presented for revision of the heat exchangers.