• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat Exchangers >The influence of brine flow on the flow boiling refrigerant heat transfer coefficient in a compact brazed plate heat exchanger
【24h】

The influence of brine flow on the flow boiling refrigerant heat transfer coefficient in a compact brazed plate heat exchanger

机译：紧凑型钎焊板式换热器中盐水流量对流动沸腾制冷剂传热系数的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The present article investigates the heat transfer coefficient on the refrigerant side in an compact brazed plate heat exchanger used as evaporator with different brine flows. The experimental equipment consisted of a test rig, simulating a domestic heat pump. Two different heat loads were tested, 5 kW and 10 kW, which corresponds to approx. 2.5 kW/m~2 and 5.0 kW/m~2. The inlet quality to the evaporator was kept within 0.18 - 0.20. The pressure was kept within 2.93 - 2.97 bar(a) and R134a was used as refrigerant. The experiment showed for both heat loads a significant increase in the refrigerant area averaged heat transfer coefficient with increasing brine flow. It may be concluded that the temperature profile on the brine side has a significant influence on the refrigerant area averaged heat transfer coefficient. It is suggested that the higher wall superheat on the refrigerant side near the inlet of refrigerant is enhancing the heat transfer.
机译：本文研究了一种用作蒸发器的紧凑型钎焊板式换热器在不同盐水流量下制冷剂侧的传热系数。实验设备包括一个模拟家用热泵的试验台。测试了两种不同的热负荷，分别为5 kW和10 kW，分别对应于大约5 kW和10 kW。 2.5 kW / m〜2和5.0 kW / m〜2。蒸发器的入口质量保持在0.18-0.20之内。压力保持在2.93-2.97 bar（a）之内，R134a用作制冷剂。实验表明，对于两种热负荷，随着盐水流量的增加，制冷剂区域平均传热系数显着增加。可以得出结论，盐水侧的温度曲线对制冷剂区域的平均传热系数有重要影响。建议在制冷剂入口附近的制冷剂侧较高的壁过热会增强热传递。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号