Nanoporous Structure of Sintered Metal Powder Heat Exchanger in Dilution Refrigeration: A Numerical Study
Xiaomin Wu, Yi Liao, Jinxin Zhong, Qing Xi, Lifa Zhang and, Jun Zhou
TL;DR
This study uses numerical simulations to analyze the nanoporous structure of sintered metal powder heat exchangers, identifying optimal particle sizes for enhanced performance in dilution refrigeration.
Contribution
It introduces a simulation approach to determine optimal nanoparticle sizes and packing fractions for sintered metal heat exchangers.
Findings
Optimal particle radius is 30-35nm at 65% packing fraction.
Simulation results guide improved heat exchanger design.
Pore space characteristics influence heat transfer efficiency.
Abstract
We use LAMMPS to randomly pack hard spheres to simulate the heat exchanger, where the hard spheres represent sintered metal particles in the heat exchanger. We simulated the heat exchanger under different sphere radii and different packing fractions of the metal particle and researched pore space. To improve the performance of the heat exchanger, we adopted this simulation method to explore when the packing fraction is 65%, the optimal sintering particle radius in the heat exchanger is 30~35nm.
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Taxonomy
TopicsHeat and Mass Transfer in Porous Media · Heat Transfer and Optimization · Injection Molding Process and Properties