Nucleate pool boiling heat transfer coefficients have been measured when a surface - active agent was added into water. Those have been measured on a heated wire that PEEK (Poly Ether ·Ether ·Keton) resin was coated in ammonia. The experiment has been carried out using a thermosyphon with a plain heated surface and a pool boiling vessel with a heated fine wire. The effect of the surface - active agent and PEEK resin coating on the nucleate boiling heat transfer coefficient and time variation of the nucleate boiling heat transfer coefficient were investigated experimentally for the surfactant concentration, CS=0 and 1000 ppm. The result shows that the nucleate boiling heat transfer coefficient never changes for more than a month in pure water and in ammonia with the heated wire coated by PEEK resin. On the other
hand, the boiling heat transfer coefficient decreases gradually till the end of operation in water with the surfactant.
水およびアンモニアの沸騰熱伝達とその経年変化に及ぼす 界面活性剤とPEEK 樹脂コーティングの影響
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水およびアンモニアの沸騰熱伝達とその経年変化に及ぼす 界面活性剤とPEEK 樹脂コーティングの影響
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