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Nucleate pool boiling is a super-effective way to cool down machines with a lot of heat. Changing from liquid to vapor and using the hidden heat in the liquid leads to better heat transfer through the medium. Many sources say that mixing of NaCl with water is good for enhancement of heat transfer. In our experiment, we used a 3 weight % aqueous solution of NaCl for pool boiling studies at atmospheric conditions. We have investigated the bubble dynamics in terms of their size, shape, and the time duration they took to grow in liquid maintained at 5 K subcooling temperature. We varied the heat flux of heater from 54 to 120 kW-m−2. The results showed that when we mix NaCl with water in the pool, bubbles size increases approximately by 55% and it took more time to grow as compared to its growth in a pure water pool.

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Nucleate Pool Boiling Studies in an Aqueous NaCl Solution Using a Non-intrusive Optical Imaging Technique

  • 会议论文

  • 发表日期：

    2025年

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  • Vineet Pandey,
  • Ravi Raushan,
  • Yogesh M. Nimdeo

摘要

Nucleate pool boiling is a super-effective way to cool down machines with a lot of heat. Changing from liquid to vapor and using the hidden heat in the liquid leads to better heat transfer through the medium. Many sources say that mixing of NaCl with water is good for enhancement of heat transfer. In our experiment, we used a 3 weight % aqueous solution of NaCl for pool boiling studies at atmospheric conditions. We have investigated the bubble dynamics in terms of their size, shape, and the time duration they took to grow in liquid maintained at 5 K subcooling temperature. We varied the heat flux of heater from 54 to 120 kW-m−2. The results showed that when we mix NaCl with water in the pool, bubbles size increases approximately by 55% and it took more time to grow as compared to its growth in a pure water pool.