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has been cited by the following article:

• TITLE: Magnetic Field Enhancement in Ammonia-Water Absorption Refrigeration Systems

  AUTHORS: Moradeyo K. Odunfa, Richard O. Fagbenle, Olanrewaju M. Oyewola, Olayinka S. Ohunakin

  KEYWORDS: Ammonia-Water Absorption Refrigeration, Magnetic Field Force, Ammonia Solution Concentration, Coefficient of Performance, Finite Difference Scheme, Numerical Solution

  JOURNAL NAME: Energy and Power Engineering, Vol.6 No.4, April 22, 2014

  ABSTRACT: Absorption enhancement has been considered as an effective way of improving coefficient of performance (COP) of refrigeration systems and magnetic enhancement is one of these methods. A model of magnetic field enhancement in ammonia-water absorption systems is presented in this paper. A numerical model using finite difference scheme was developed based on the conservation equations and mass transport relationship. Macroscopic magnetic field force was introduced in the momentum equation. The model was validated using data obtained from the literature. Changes in the physical properties of ammonia solution while absorbing both in the direction of falling film and across its thickness were investigated. The magnetic field was found to have some positive effect on the ammonia-water falling film absorption. The results indicate that absorption performance enhancement increased with magnetic intensity. The COP of simple ammonia solution absorption refrigeration system increased by 1.9% and 3.6% for magnetic induction of 1.4 and 3.0 Tesla respectively.