Experimental Investigation of a Finned Pentaerythritol-based Heat Storage Unit for Solar Cooking at 150-200 ̊C

Lameck Nkhonjera, Matthias Kuboth, Andreas König-Haagen, Geoffrey John, Cecil K. King'ondu, Dieter Brüggemann, Tunde Bello-Ochende

Research output: Contribution to journalArticle


An experimental study on the charging and discharging performance of a finned thermal energy storage unit (TESu) that utilizes pentaerythritol (PE) as phase change material (PCM) was conducted. It is known that fins enhance the heat transfer within TESu, however, the optimum PCM to fin volume ratio for a particular application is usually unknown. Therefore, this work compares the charging and discharging performances of three rectangular TESu prototypes with 6, 12, and 21 PE to fin volume ratio (P/F) per prototype. The performance comparison was in terms of (1) charging rapidity, (2) heat retention effectiveness, (3) temperature distribution, and (4) the cooking power. It is found that for 6 ≤ P/F ≤21, charging rapidity decreases with PE/fins ratio. On the other hand, the PE/fin volume ratio of higher than P/F > 12 has great influence on heat retention effectiveness, temperature distribution in the TESu, and cooking power. Therefore, 6 <P/F
Original languageEnglish
Pages (from-to)160-167
Number of pages8
JournalEnergy Procedia
Publication statusPublished - Aug 2016
EventAfrica-EU Symposium on Renewable Energy Research and Innovation - Tlemcen, Algeria
Duration: Mar 8 2016Mar 10 2016


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