• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Thermal Science and Engineering Applications: Transactions of the ASME >Standard Rating Charts for Low Global Warming Potential Refrigerants Flowing Through Adiabatic Helical Capillary Tube
【24h】

Standard Rating Charts for Low Global Warming Potential Refrigerants Flowing Through Adiabatic Helical Capillary Tube

机译：低全球变暖潜在制冷剂流过绝热螺旋毛细管的标准评级图

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 research work is undertaken to develop ASHRAE like standard rating charts for currently used refrigerants R-134a and R-410A and their potential low global warming potential (GWP) substitutes R-1234yf and R-32, respectively. A self-adjustable mass prediction algorithm has been developed using an averaging technique. Based on this, a MATLAB code dynamically linked to REFPROP v. 9.0 software has been developed that solves governing equations of mass, momentum, and energy. Two-phase flow inside the capillary tube is assumed homogeneous and metastability is ignored in the proposed model. The proposed numerical models are in good agreement with the available experimental data with overall percentage mean deviation is less than 6%. Coil diameter plays an important role in adjusting the mass flow rate in the helical capillary tube. Coiling of capillary tube causes an increase in friction pressure drop and a reduction in refrigerant mass flow rate. It has been found that the mass flow rate reduces by about 5% as coil diameter is reduced from 120 to 20 mm.
机译：本研究工作是为目前使用的制冷剂R-134a和R-410a的标准评级图表开发了Ashrae，以及其潜在的低全球变暖电位（GWP）分别代替R-1234yF和R-32。使用平均技术开发了一种自调节质量预测算法。基于此，MATLAB代码与REFPROP v动态链接到REFPROP v.9.0软件，以解决质量，动量和能量的控制方程。假设毛细管​​内部的两相流动在所提出的模型中忽略均匀的并且缩放性。拟议的数值模型与具有总体百分比偏差的可用实验数据吻合较好，偏差小于6％。线圈直径在调节螺旋毛细管中的质量流量方面起着重要作用。毛细管的卷绕导致摩擦压降的增加和制冷剂质量流量的降低。已经发现，随着线圈直径从120至20mm减小，质量流量降低了约5％。

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