两种常见形式是固定节流阀式或节流管式，以及节流膨胀阀。
Two common types are the fixed orifice, or the orifice tube, and the thermostatic expansion valve.
分析节流膨胀与等熵膨胀的原理，通过推导公式，从理论上找到二者的本质区别。
Analyzed are principles of throttling expansion process and isentropy expansion process and derivation formula is adopted to identify the essential distinction of the both theoretically.
常温高压的液体冷媒流过膨胀阀，因为膨胀阀的节流作用压力降低，使得冷媒变成常温低压的液体。
The high-pressure liquid refrigerant through the expansion valve, because the expansion valve throttling pressure drop, the refrigerant into normal temperature low pressure liquid.
透平式膨胀机和节流阀之间的膨胀有什么不同。
What is the difference expansion between turbine expander and valve throttle ?
当原料气流过节流件时，产生焦耳-汤姆逊膨胀及降温，使部分气体和大部分水蒸汽液化。
As the feed stream flows through the choke, the resulting J-T expansion and cooling causes some gas and most of the water vapor to liquefy.
本文利用熵法对涡流管、透平膨胀机及节流阀三种装置进行了研究。
In this paper, a method of entropy has been used to investigate vortex tube, throttle valve and expansion turbine.
为了节约成本，避免使用两个热力膨胀阀，文章提出了一种新型的用于热泵的节流机构，实现了制冷和制热的最佳匹配。
In order to save costs and avoid using two thermal expansion valves, the paper proposed a new throttle mechanism used for the heat pump and realizes the best match of the cooling and heating.
液态工质经干燥过滤器去除水份、杂质，进入膨胀阀节流减压，成为低温低压液态工质，在蒸发器内气化。
Liquid medium the dry filter to remove water, impurities, into the expansion valves throttling decompression, become a low voltage liquid medium, low temperature within in the evaporator gasification.
空分设备有效能损失主要存在流体的压缩与膨胀、热交换、精馏、节流减压。
The available energy loss of ASU lies in the gas compression , heat exchanging, distillation, and throttling depressurization process.
它由压缩机、冷凝器、节流阀或膨胀阀、蒸发器，以及一种工作流体(冷冻剂)组成。
It consists of a compressor, a condenser, a throttle or expansion valve, an evaporator, and a working fluid (refrigerant).
该阀不依赖外部能源工作，具有自动节流减压、泄漏超流自动截断、禁开、温升膨胀自动卸压和压力自动开启等多项功能。
The pressure regulation valve, working without exterior energy, has the functions of pressure regulating, overflow closing, liquid temperature expansion relieving, and set pressure opening.
空分设备有效能损失主要存在流体的压缩与膨胀、热交换、精馏及节流减压等。
Exergy loss in an air separation unit mainly derives from the compression and expansion processes of fluid, heat exchange, rectification and throttling.
如果井口压力超过管道所需的压力，则可使气体通过节流件，以等焓焦耳-汤姆逊膨胀获取冷量。
If the wellhead pressure exceeds that of the pipeline, then the gas can be passed through a choke or throttled in a constant-enthalpy Joule-Thomson expansion to provide cooling.
在对某型膨胀机气体轴承理论分析的基础上，对其气源系统进行了改进设计，使节流器实现压力流量的自动控制。
On the base of analyzing the gas axletree of expansion machine in theory, the system of gas source are mended and designed, it makes the throttle can realize the auto-control of press and flux .
指出对质量流量影响最大因素依次为蒸气密度、可膨胀系数、节流件内径及流量系数。
Also the paper lists the factors mostly affecting the mass flow measurement consecutively as steam density, expandable coefficient, inner diameter and flow coefficient of the throttle element.
跨临界二氧化碳制冷系统节流控制机构，主要包括节流阀、汽液分离器、电磁阀、混合器、热力膨胀阀等。
The throttle control mechanism of cross-critical CO2 refrigerating system includes mainly throttle valve, vapor-liquid separator, solenoid valve, mixer thermal expanding valve, etc.
跨临界二氧化碳制冷系统节流控制机构，主要包括节流阀、汽液分离器、电磁阀、混合器、热力膨胀阀等。
The throttle control mechanism of cross-critical CO2 refrigerating system includes mainly throttle valve, vapor-liquid separator, solenoid valve, mixer thermal expanding valve, etc.
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