refrigerants

Electronic expansion valves ( EEV) are throttling components in refrigeration system. It can adjust the flow of refrigerants, throttle step-down, and control superheat in system.

电子膨胀阀（EEV）是制冷系统中的节流元件，它在系统中的主要作用是调节系统制冷剂流量、节流降压及控制过热度。

The NPT+ Test Particle method of molecular dynamic simulation was used in the simulation of the vapor-liquid equilibrium data of five alternative refrigerants ( HFC-152a, HFC-143a, HFC-134a, HCFC-142b and HFC-227ea). The simulation results was proved in consistency with the law of thermodynamics.

利用NPT+Test Particle算法对五种制冷剂替代物（HFC-152a，HFC-143a，HFC-134a，HCFC-142b和HFC-227ea）的气液相平衡性质进行了计算，同时验证了计算结果的热力学一致性。

Greencool refrigerants are a series of CFC-free refrigerants that are non-flammable, non-toxic, non-corrosive and energy-efficient.

格林柯尔制冷剂是一系列不含CFC的制冷剂,其特性是不易燃 、 无毒 、 无腐蚀性而且高效节能.

The chlorofluoromethanes are used principally in aerosol spray cans and as refrigerants.

氯氟甲烷主要使用在气溶胶喷雾罐和作为冷冻剂.

Their very low boiling and melting points make them refrigerants for low-temperature research ( see cryogenics ) .

它们的沸点和熔点都非常低,因而可以在低温研究中用作致 冷剂.

Chlorine-free refrigerants must also not be allowed to escape into the atmosphere and must be disposed of correctly.

不含氯的制冷剂也不可挥发到空气中，必须予以正确处置。

Influence of cost on system optimization of R22 alternative refrigerants

成本因素对R22替代制冷剂在系统优选中的影响

CO 2 transcritical cycle is advantageous over conventional refrigerants, especially in higher temperature application fields.

CO2跨临界循环热泵较之传统工质热泵具有较大优势, 尤其是在高温热泵领域.

Firstly the article briefly introduces the basic principle, the key technology of magnetic refrigeration and the development of magnetic refrigerants.

本文首先就磁致冷的基本原理、磁制冷关键技术、磁致冷材料的发展等问题做了简要的概述。

A comparative assessment between HCFC-123 and CFC-11, the two kind of refrigerants, has been carried out by simulation calculating the theoretical cycle performance indexs including pressure ratio, volumetric refrigerating capacity and coefficient of performance in this paper.

通过模拟计算压力比、单位容积制冷量和理论循环制冷系数等性能指标，对比评价HCFC－123和CFC－11两种制冷工质。

Experimental study of air heat pump water heater using mixing refrigerants

空气源热泵热水器中几种混合工质的实验研究化学水罐车移动式混合器

According to current Chinese safety standards, the refrigerants can only be A 1 type and the products electrical safety measures should meet class ⅰ of protection against electric shock as basic requirements.

按照我国现行安全标准，制冷剂仅限采用A1类；产品的电气安全措施应按Ⅰ类防触电保护类别作为基本要求；

The lubricants and refrigerants of the machines will not contaminate the materials and the machine drums.

设备所用的润滑剂、冷却剂等不对物料或容器造成污染.

Establishes a steady-state simulation model. Obtains the performance curves with the change of working conditions for the systems using R22 and R32/ R134a as refrigerants respectively by simulation.

建立了空气源热泵的稳态仿真模型，得出了R22和其替代工质R32/R134a系统循环性能随工况的变化曲线。

The primary reason for CFCs alternative is that they damage the ozone layer, no destructive type refrigerant for the ozone layer HFCs become important and alternative CFCs refrigerants.

CFCs替代的首要原因是因为它们破坏臭氧层，对于臭氧层没有破坏力的HFC类工质，成为替代CFCs的重要工质。

THE DESIGN AND PERFORMANCE ANALYSIS OF SINGLE-STAGE COMPRESSION REGENERATIVE REFRIGERATION CYCLE USING MIXED REFRIGERANTS Study on Characteristics of the Ejector in Quasi Two-Stage Compression Heat Pump Coupled with Ejector

混合工质单级压缩回热制冷系统的设计与性能分析准二级压缩&喷射复合热泵系统用喷射器的性能研究

Performance Evaluation of Alternative Refrigerants for R 22

R（22）替代制冷剂的性能评估

As the natural refrigerant, CO 2 takes a prominent environmental advantage over the freon refrigerants.

作为自然工质, CO2在氟利昂制冷剂替代中具有突出的环保优势.

High pressure gas refrigerants in the condenser cooling medium heat to be setting for liquid, through the throttle device reduced pressure cooling into the evaporator;

高压气态制冷剂在冷凝器中向冷却介质放热被凝结为液态后，经节流装置减压降温进入蒸发器；

Experimental Study on a Variable Capacity Heat Pump System with Ternary Mixture Refrigerants

三元混合工质用于变容量热泵系统的实验研究

Regulations are outlawing certain refrigerants, such as chlorofluorocarbons, which contain ozone-depleting chemicals.

随后出台的政策禁用了部分制冷剂，如破坏臭氧层的氟氯碳化合物。

Most of their alternative refrigerants are finalized products of foreign corporations, which still have high GWP.

其常见的替代制冷剂多为国外公司的定型产品，并且仍具有较高的GWP值。

The software of cooling/ heat pump cycle analysis is developed, it can be used to calculate the single-stage vapor compression refrigeration/ heat pump thermodynamic cycle with 12 kinds of refrigerants.

开发了制冷机/热泵循环分析软件，可以实现采用12种不同工质的单级蒸气压缩式制冷机/热泵系统的热力循环分析计算。

Investigation on Rare Earth Gd-Based Magnetic Refrigerants

稀土Gd基磁致冷材料的研究

Hydrogen is also one of the coolest refrigerants.

氢是温度最低的冷冻剂.

A review and evaluation of investigation on condensation of pure refrigerants inside tube

纯质制冷剂管内冷凝计算方法的回顾与评价

In this paper, a precise low temperature thermostat is developed for PVT measurement of refrigerants.

介绍了一套自行研制的制冷工质PVT实验用精密低温恒温槽。

Calculation Program of Thermodynamic Properties of Refrigerants in the Simulation of Refrigeration System

制冷系统仿真中的工质热力性质计算程序

This thesis also analyzes the temperature glide of some non-azeotropic refrigerants, and the characteristic of enthalpy change during the phase change process, which has much correlativity with the temperature glide.

本文第四章对非共沸混合工质的温度滑移特性，以及与温度滑移密切相关的焓变的线性特性进行了详细研究。

CFCs are commonly used as refrigerants in air conditioners and freezers, and asin fire extinguishers.

含氯氟烃通常用作空调机和冷冻机的冷却剂, 而哈龙则用作灭火器的补充剂.