Determination of Impingement Cooling Fluid Temperature-Time Profile For Extracted Tiger-Nut Juice (Cyperus Esculentus) By Lumped Thermal Mass Analysis | ||
| Engineering and Technology Journal | ||
| Article 13, Volume 41, Issue 1, January 2023, Pages 142-150 PDF (840.25 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.30684/etj.2022.134483.1239 | ||
| Authors | ||
| Nwankwo, Michael Azubuike* 1; Onah Thomas Okechukwu2; Egwuagu Michael Onyekachi3 | ||
| 1Mechanical Engineering, Carits University Amorji-Nike Enugu Nigeria | ||
| 2mechanical and production engineering, enugu state university of science and technology, Enugu Nigeria | ||
| 3Mechanical Engineering department, Enugu state university of science and technology, Enugu | ||
| Abstract | ||
| Determination of Temperature-Time Profile by the Lumped thermal mass analysis (LTMA) method using Tiger-Nut Juice as the impinging fluid on the cooling system was carried out. With a stationary hot steel plate on a modified run-out table for the top surface controlled the accelerated cooling process. This was evaluated with pipe diameters of 10mm, 15mm, 30mm, 35mm, and 40mm by single jet Tiger-Nut Juice impinging fluid, impingement gaps of 115mm, 125mm, 135mm, 145mm, and 155mm, initial surface temperatures from 450oC – 410oC and at sub-cooled temperatures from 150oC–110oC. The analysis reveals a faster cooling rate for both diameters at an impingement gap of 155mm. Diameter 10mm with 1.8oC/sec average rate, for impingement gap of 115mm, 1.8oC/sec for impingement gaps of 125mm, 135mm and 145mm and 1.9oC for 155mm. This optimal temperature-time profile of Tiger Nut Juice impingement cooling infers that a higher cooling rate is achieved using smaller pipe diameter D and higher impingement gap H. In addition, it showed evidence of less Leiden frost phenomenon; hence, extracted tiger nut juice fluid can perfectly serve as a substitute for water at smaller pipe diameters and higher impingement gaps. Also, it was inferred that it also cools at a bigger pipe diameter with a lower impingement gap. | ||
Highlights | ||
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| Keywords | ||
| Impingement gaps; lumped thermal-mass-Analysis; Run-out table; Tiger-Nut Juice; Temperature Time Profile | ||
| References | ||
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