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- Title
Thermal performance investigation of water-based nanofluids in an ice storage system.
- Authors
Shen, Shanshan; Gao, Qifeng; Chen, Ting
- Abstract
In this study, the combined effects of heat transfer enhancement and cost increment of water-based nanofluids in an ice storage system are investigated theoretically. First, a model for describing the ice formation process of water around a helical coil is established, and the model is verified by comparing the simulation and experimental results. Second, the heat transfer performance of water-based Al 2 O 3 nanofluids and multi-wall carbon nanotubes (MWCNT) nanofluids with different nanoparticle volume fractions are simulated with the established model. Although 0.05 v.% M/W shows the best heat transfer performance, it has a higher cost. In this study, an economic analysis of these two nanofluids is conducted, and a benchmark based on economic analysis and heat transfer performance analysis is obtained, comparing the ice-making performance of the two nanofluids. Based on the benchmark point E, the ice-making performance of two nanofluids can be separated into three regions: a low-performance region, an economic region, and a heat transfer region. In the low-performance region, the enhancement effect on heat transfer performance is small. In the economic region, A/W is a more ideal ice-making medium. In the heat transfer region, M/W is a more ideal ice-making medium. • The comprehensive performance of nanofluids in a cold thermal energy storage unit are investigated theoretically. • An equivalent point which can be used to evaluate performance of different nanofluids is obtained. • By using the equivalent point, the optimal application scope of nanofluid can be defined.
- Subjects
NANOFLUIDS; HEAT storage; ALUMINUM oxide; HEAT transfer; ICE
- Publication
Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers Part A, 2024, Vol 203, p520
- ISSN
0263-8762
- Publication type
Article
- DOI
10.1016/j.cherd.2024.01.042