Abstract
Background/Objectives: Ceramic heat exchangers are preferred in most high temperature applications due to its high temperature stability and corrosion resistance. Evaluation of performance of the heat exchanger under different circumstances helps us to select suitable design for certain application. Methods/Statistical Analysis: This work investigated the functioning capability of a ceramic heat exchanger, determining pressure drop and the heat transfer theoretically by Ɛ-NTU method by using silicon carbide and aluminium nitride as heat exchanger material. The performance of both the ceramic material under the desired condition was compared. A heat exchanger possess ducts that is rectangular to exhaust gas, ducts which are rectangular for air and exhaust gases, a core made of ceramic along with air in the cross-flow direction. Findings: Heat exchanger has been investigated involving conventional Ɛ-NTU technique with numerous Nusselt number correlations from the literature for characterizing the rectangular duct flow. Theoretical analyses reveal that, while using aluminium nitride as the heat exchanger material the performance parameters such as overall heat transfer got increased by 4.5-5%, effectiveness by 3% and heat transfer rate by same 3% relative to silicon carbide as the heat exchanger material. Applications/Improvements: Analysis on performance enhancement of all other heat exchanger.
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