Fluoroketone C2F5C(O)CF(CF3)2 as a Heat Transfer Fluid for Passive and Pumped 2-Phase Applications

2008 Twenty-fourth Annual IEEE Semiconductor Thermal Measurement and Management Symposium Pub Date : 2008-03-16 DOI:10.1109/STHERM.2008.4509386

P. Tuma

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引用次数: 45

Abstract

C₂F₅C(O)CF(CF₃)₂, a new Fluoroketone (FK) working fluid with an atmospheric boiling point of 49degC and Global Warming Potential (GWP) ~1, is proposed as an alternative to Perfluorocarbons (PFCs) and hydrofluorocarbons (HFCs) for passive and pumped 2-phase systems. Its thermophysical properties are very similar to those of the PFC C₆F₁₄C₂F₅C(O)CF(CF₃)₂ exhibits low acute toxicity and bears a recommended 8-hour exposure guideline of 150 ppmv. Pool boiling experiments conducted with a porous metallic boiling enhancement at P_atm showed h>8 W/cm²-K at >30 W/cm². Metal corrosion and elastomer compatibility testing show the material to be very inert. 120 hour thermal stability tests conducted with C₂F₅C(O)CF(CF₃)₂ at 230degC in sealed glass ampules with copper and aluminum coupons showed purity changes -0.02%. It will hydrolyze in the presence of a separate water phase and the implications of this incompatibility for water-cooled systems require further investigation.

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氟酮C2F5C(O)CF(CF3)2作为被动和泵送两相应用的传热流体

C2F5C(O)CF(CF3)2是一种新型氟酮(FK)工质，其大气沸点为49℃，全球变暖潜势(GWP)为~1，可替代全氟碳化合物(pfc)和氢氟碳化合物(hfc)用于被动和泵送两相系统。其热物理性质与PFC C6F14C2F5C(O)CF(CF3)2非常相似，具有低急性毒性，并具有推荐的8小时暴露指南150 ppmv。在Patm进行的多孔金属沸腾强化池沸腾实验表明，>为30 W/cm2时，h>为8 W/cm2。金属腐蚀和弹性体相容性测试表明该材料非常惰性。用C2F5C(O)CF(CF3)2在230℃下密封玻璃瓶中进行120小时热稳定性测试，铜和铝片纯度变化为-0.02%。它将在单独的水相存在下水解，这种不相容对水冷系统的影响需要进一步研究。

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2008 Twenty-fourth Annual IEEE Semiconductor Thermal Measurement and Management Symposium

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