Numerical Investigation of Latent Thermal Storage in a Compact Heat Exchanger Using Mini-Channels
نویسندگان
چکیده
This paper aims to numerically investigate the thermal enhancement of a latent energy storage component with mini-channels as air passages. The investigated channels in two sizes internal passages (channel-1 dh = 1.6 mm and channel-2 2.3 mm) are oriented vertically cuboid 0.15 × 0.1 m3 RT22 PCM located shell. phase change is simulated fixed inlet temperature air, using ANSYS Fluent 19.5, varying number ranging flow rate entering component. results show that power LTES improves by increasing at cost decrease capacity. Given constant rate, increase heat transfer surface area increased dominates coefficient, thus mean (UA). A comparison shows performance depends largely on volume ratio channels. channel type (channel-2) slightly higher has charging/discharging power, compared one (channel-1), similar packing factor. Adding fins channel-2, doubling area, UA values 15–31% for studied cases. variation total from 7 24 L/s found have considerable influence, reducing melting time 41–53% within 19–52% factor range 77.4–86.8%. With considerably lower pressure drops than one, which can be attributed its hydraulic diameter, making it superior terms achieving relatively exchange significantly fan power. Such designs further optimized drop future work, should also include an experimental evaluation.
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2021
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app11135985