旋流式复合喷头红外降温特性试验分析

Experimental analysis of infrared cooling characteristics of swirl atomizer composite nozzle

    摘要
  • 摘要:
      目的  针对现有红外降温设备响应时间长、红外降温耗时久的问题，开展优化研究。
      方法  利用基于水雾颗粒的吸收、散射和水膜降温双重作用衰减目标物体的红外辐射强度，从而提高红外降温系统响应速率的原理，设计旋流式复合喷头，通过对比试验，分析不同压力下旋流式复合喷头与传统水膜喷头的红外降温特性。
      结果  结果表明，当供水压力为0.3，0.5，0.8 MPa时，相比传统水膜喷头，旋流式复合喷头的红外降温耗时分别缩短了27.9%，47.3%，46.2%，且在水雾喷出的瞬间，目标红外辐射温度与真实温度相比分别低了8.62，11.13，11.09 ℃。
      结论  研究显示旋流式复合喷头能够有效控制目标的红外降温时长，提高降温效果。

     

    Abstract:
      Objectives  Aiming at the problems of the long response time and excessive time consumption of infrared cooling equipment, an optimization study is carried out.
      Methods  A special cooling method based on the combined effects of absorption, scattering of water mist particles and cooling of water film is proposed to attenuate the infrared radiation intensity of the target object and improve the response speed of the infrared cooling system. The infrared cooling characteristics of the composite nozzle and water film nozzle at different pressures are analyzed through comparative design experiments.
      Results  The test results show that under water supply pressures of 0.3, 0.5 and 0.8 MPa, the infrared cooling time of the composite nozzle is reduced by 27.9%, 47.3% and 46.2% respectively compared with that of the water film nozzle. At the moment the water mist is sprayed, the temperatures measured by the infrared thermal imaging camera are 8.62, 11.13 and 11.09 ℃ lower than the actual temperature of the target.
      Conclusions  The test results show that the swirling atomizer composite nozzle can effectively control the infrared cooling time of the target object.

     

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