Mathematical modeling of the solar regenerative heat exchanger under turbulent oscillating flow: Applications of renewable and sustainable energy and artificial heart

• Published in: Results in engineering 2022-03, Vol.13, p.100321, Article 100321
• Main Authors: Beni, Hamidreza Mortazavy, Mortazavi, Hamed
• Format: Article
• Language: English
• Subjects: Atomic artificial heart; Pressure drop; Regenerative heat exchanger; Solar powered stirling engine; Thermal efficiency; Turbulent oscillating flow
• ISSN: 2590-1230; 2590-1230
• DOI: 10.1016/j.rineng.2021.100321

Heat regenerators are mainly used in industry to return heat to the thermodynamic cycles and prevent heat loss. This could increase the efficiency of the cycle and reduce environmental damage. In this study, two heat regenerator staggered and in-line stacked plain-weave screen under some constraints such as same mass, same porosity of packed bed, and same heat transfer surface area to volume ratio was investigated by computational fluid dynamics method. In other words, the only difference between the regenerators was in the arrangement of the wires. The results show that the in-line regenerator not only increases the average efficiency up to 3.6% but also achieves a 36 Pa average lower pressure drop. However, the in-line model reaches the maximum thermal efficiency faster in reduced length< 11 and the staggered model reaches the maximum thermal efficiency faster in 11