• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>other >LOW-GWP REFRIGERANTS FOR MEDIUM AND HIGH-PRESSURE APPLICATIONS
【2h】

LOW-GWP REFRIGERANTS FOR MEDIUM AND HIGH-PRESSURE APPLICATIONS

机译：适用于中高压应用的低GWP制冷剂

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The merits of an alternative refrigerant are established based on many attributes including environmental acceptance, chemical stability in the refrigeration system, low toxicity, flammability, efficiency and volumetric capacity. In an earlier work, these criteria were used to screen a comprehensive database to search for refrigerants with low global warming potentials (GWP). The present paper summarizes the screening process and presents the performance of the ‘best’ replacement fluids for small and medium-sized air-conditioning, heating, and refrigeration applications. In addition to considering cycle calculations based only on thermodynamic properties, a simulation model that included transport properties and optimized heat exchangers was used to assess the performance potentials of the candidate fluids. The need for this more detailed modeling approach is demonstrated for systems relying on forced-convection evaporation and condensation. The study shows that the low-GWP refrigerant options are very limited, particularly for fluids with volumetric capacities similar to those of R 410A or R-404A. The identified fluids with good COP and low toxicity are at least mildly flammable. Refrigerant blends can be used to increase flexibility in choosing tradeoffs between COP, volumetric capacity, flammability, and GWP. The probability of finding ‘ideal’, better-performing low-GWP fluids is minimal.
机译：替代制冷剂的优点是基于许多属性而建立的，这些属性包括环境认可度，制冷系统中的化学稳定性，低毒性，可燃性，效率和容量。在较早的工作中，这些标准用于筛选综合数据库，以搜索低全球变暖潜能值（GWP）的制冷剂。本文总结了筛选过程，并提出了适用于中小型空调，供暖和制冷应用的“最佳”替代液的性能。除了考虑仅基于热力学性质的循环计算之外，还使用包括运输性质和优化的热交换器的仿真模型来评估候选流体的性能潜力。对于依赖强制对流蒸发和冷凝的系统，表明了对这种更详细的建模方法的需求。研究表明，低全球升温潜能值的制冷剂选择非常有限，特别是对于容积与R 410A或R-404A相似的流体。鉴定出的具有良好COP和低毒性的液体至少是轻度易燃的。制冷剂混合物可用于增加在COP，容量，可燃性和GWP之间进行权衡选择的灵活性。发现“理想”，性能更好的低GWP流体的可能性很小。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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