Abstract

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The study explored solid modelling for possible optimization of conventional laboratory heat exchangers. 240mm, 360mm, 480mm, 600mm and 720mm lengths conventional and unconventional Allihn, Graham, Liebig and Zigzag condensing models were designed and fabricated. An automated coolant system for test running the condensing models was sketched, constructed and used for test running the models using tap water as purification liquid in distillation flasks and coolant from the automated system for condensing vapour. Distillation temperatures range between 93-110oC; while differences between inlet and outlet temperatures were between 6-10oC. Optimal designs for 240mm, 360mm, 480mm, 600mm and 720mm based on distillation rates were Model Nos. 43=BZBZBWB (TA) with distillation rate (WDR) of 477mLs/hr, 38=SBSBS (TB) WDR of 458mLs/hr, 18=BSB (TB) WDR of 438mLs/hr, 18=BSB (TB) WDR of 422mLs/hr and 38= SBSBS (TB) WDR of 428mLs/hr respectively. The models could potentially be used for separation, purification, extraction and teaching aids in science and engineering laboratories and tertiary institutions of higher learning.

Keywords: Optimal design, Glass condensernomhat2003@gmail.com