Ice making system for harmonious with environment by direct contact heat-exchange between low temperature air bubbles and water

近年来，为了节约能源和减少夏季白天的峰值电力需求，已经积极地开发了用于空调的热能存储系统。特别是，大量的注意力已经支付给冰热能储存系统，因为它将是有益的，能够利用大潜热的融化冰。本研究的目的是调查的冰浆制造特性，通过使用冷空气和水。将压缩空气吹入涡流冷却器，制成冷空气，吹入充满冷水的制冰段。通过空气气泡与水的直接接触传热在水中形成冰块，并在空气温度、空气流量和水面高度等参数下观察了冰块的制冰特性。实验结果表明，在-1℃的空气温度下就可以制冰，不同冷空气流量的制冰效率不同。在高流速的情况下，即超过100 Nl/min。制冰效率超过90%。本研究结果为新型冰蓄冷系统的研究提供了基础资料。

Recently, a thermal energy storage system for air conditioning has been developed actively for the purpose of saving energy and reducing the peak electrical demand in the daytime during summer. In particular, a great deal of attention has been paid to the ice thermal energy storage system since it would be beneficial to be able to utilize the large latent heat of melting ice.The objective of the present study is to investigate the ice slurry making characteristics by using cold air and water. The cold air, which is made for the compressed air blew into a vortex cooler, blow into an ice making section which filled with cold water. The pieces of ice forms in the water by direct contact heat transfer between cold air bubbles and water.It was observed the ice making characteristics under some parameters of air temperature, air flow rate, and height of water. It was found that ice could be made at -1℃ in air temperature, and that ice making efficiency is different by the case of cold air flow rate. In the case of high flow rate, that is over 100 Nl/min. ice making efficiency is over 90%. The results of the present study provide fundamental information for the new ice thermal energy storage system.