Theoretical and experimental analysis of dynamic heat exchanger: Retrofit configuration

Edris Ebrahimzadeh, Paul Wilding, David Frankman, Farhad Fazlollahi and Larry L. Baxter

Energy, 2016, vol. 96, issue C, 545-560

Abstract: This paper theoretically and experimentally describes a dynamic plate heat exchanger configuration that decreases or even eliminates heat exchanger losses in performance and efficiency associated with transient flow rates of hot and cold streams passing through its interior or other sources of imbalance. Heat exchanger constraints are some of the most restrictive transient response constraints in a process and thereby inhibit the process's agility and responsiveness. These constraints include temperature changes, expansion, or thermal stresses in the heat exchangers or neighboring process equipment. Despite any changes in inlet conditions, the proposed configuration is capable of leveling the varying parameters such that the exit temperatures remain fixed. Theoretical and experimental results show that the proposed configuration can respond to changes in process flow rates with a near-zero time constant.

Keywords: Plate heat exchanger; Transient flow; Efficiency; Response time; Mathematical modeling; Orthogonal collocation (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:96:y:2016:i:c:p:545-560

DOI: 10.1016/j.energy.2015.12.068

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