1、 Polypropylene-based hollow fibers as a heat-conducting medium for heat exchangers were developed by melt-mixing polypropylene with graphite particles using maleated polypropylene (PP-g-MA) as interface modifiers。
2、 The addition of graphite could improve the heat transfer efficiency of polypropylene-based hollow fiber heat exchangers. The overall heat-transfer coefficient of 20.0 wt% graphite modified polypropylene-based PHFHEs reached 1228.7 W/ (m2·K), about 5 times higher than that of pure PP-based hollow fiber heat exchangers。
3、 the overall heat conductance per unit volume(CUV) achieved 1.1×106W/(m3·K), 1.5 times higher than conventional metal shell-and-tube heat exchangers and larger than most values ever reported for liquid-to-liquid applications in plastic heat exchangers of commercial or laboratory scale。
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