需要一种评级方法来预测通过吸入管/毛细管交换器的制冷剂质量流量。将根据制冷剂的几何形状、吸入管路和工作条件进行预测。该方法适用于任何单组分制冷剂或共沸混合物。将确定涉及流体性质和操作条件的重要参数。评级方法将以评级图表和评级相关性的形式呈现。还包括理论（即第一原则）模型的开发。该项目的范围包括理论分析和实验室工作，以验证评级方法。该项目的目标如下:1）使用R134a进行实验，并开发用于预测质量流量的软件；2）使用R- 12、R-22和R-6001，以及为任何单组分制冷剂或共沸混合物预测通过slct hx的质量流量的评级方法的开发，3）为质量流量预测开发第一原理模型，以及4）使用R-152a进行实验，并验证（抽查）模拟模型和预测方法。文件大小:59.4MB（61244千字节）连接速度估计时间拨号（56K）2小时29分钟19秒ISDN（128K）1小时1分钟23秒DSL/电缆（768K）10分钟53段1.5M 5分钟22秒

A need exists for a rating methodology that will predict refrigerant mass flow rate through a suction-line/capillary-tube exchanger. The prediction will be based on capillary tube, suction line and connection geometry, properties of refrigerant, and operating conditions. The method will be applicable to any single-component refrigerant or azeotropic mixture. Important parameters involving fluid properties and operating conditions will be determined. The rating methodology will be represented in the form of rating charts and rating correlations. Development of a theoretical (i.e., first-principles') model is also included. The scope of this project includes both theoretical analysis and laboratory effort to validate the rating methodology.The objectives of the project are as follows: 1) experiments with R134a and development for predicting the mass flow rate, 2) experiments with R-12, R-22, and R-6001 and development of a rating methodology of predicting the mass flow rate through the slct-hx for any single-component refrigerant or azeotropic mixture, 3) development of a first principles’ model for the prediction of mass flow rate, and 4) experiments with R-152a and verification (spot checks) of the simulation model and prediction methodology.File Size:59.4MB (61,244 kilobytes)Connection SpeedEstimated TimeDial-up (56K)2 hrs, 29 min, 19 secISDN (128K)1 hr, 1 min, 23 secDSL/Cable (768K)10 min, 53 secT1 (1.5M)5 min, 22 sec