Through the calculation of the pressure, temperature, enthalpy, entropy, flux of vapor and liquid, two flux mole percentage to ascertain the compressor power, solar energy collection, cold capacity, heating capacity, pre-cooling capacity of propane, the flux of the refrigerant and the exchanged heat parameter etc.
建立数学模型，利用模块化理论，归纳并总结了机组在制冷、供热及天然气液化流程中所涉及到的单效热泵机组、双效热泵机组的节能特征；建立了压缩机、节流阀、气液分离器、混合器、多股流换热器及整台机组的数学模型，通过计算流程中各节点的压力、温度、焓、熵、气液两相流量及气液两相摩尔分率，确定流程中压缩机功率、太阳能集热量、制冷量、供热量、压缩机功耗、丙烷预冷量、制冷剂流量及换热器的换热量等参数。
Then the simulated calculation to the whole liquefied process of nature gas is going on and the pressure, temperature, enthalpy, the flux of vapor and liquid, the mol percentage of vapor and liquid of every point are obtained, the same is true of the power of the compressor, the cooling provided by the propane cycle, the flux of the refrigerant, the exchanged heat of each heat exchanger.
对天然气液化全流程进行了热力学模拟计算，得到了流程各节点压力、温度、焓、熵、气液两相流量，总流量及气液两相摩尔分率，同时还计算了流程中压缩机耗功，丙烷预冷量、制冷剂流量、各换热器的换热量等表示流程性能的参数。
As a vapor, it makes its way through the suction tube or pipe to the compressor.
作为蒸汽，它使得它的途径，透过吸气管或水管到压缩机。
The refrigerant leaves the compressor as a hot, dense vapor and flows through a heat exchanger called the condenser, which transfers heat from the refrigerant to a body of air.
在离开压缩机时，致冷剂已变作高温、稠密的气体，流经一个被称为冷凝器的热交换器，将热量从致冷剂转换作一团气体。
Then the simulated calculation to the whole liquefied process of the nature gas is going on and the pressure, temperature, enthalpy, the flux of vapor and liquid, the mol percentage of vapor and liquid of every point are obtained, the same is true of the power of the compressor, the cooling provided by the propane cycle, the flux of the refrigerant, the exchanged heat of each heat exchanger.
而液化流程设备多、循环回路复杂，无法直接应用序贯模块法直接进行求解，根据液化流程图画出相应的信息流程图，通过合理的分块与分割，采用Broyden的拟Newton算法迭代计算，对天然气膨胀液化流程和丙烷预冷混合制冷剂液化流程进行了热力参数模拟，得到了液化流程中主要物流点的工艺参数。
Compared with other air conditioning systems, engine-driven hybrid air conditioning system has the following advantages: the vapor-compression driven by engine can run in the regulating pattern of changing rotary-speed of engine and cylinder number of compressor; the rotary desiccant dehumidifier is adopted to reduce air humidity so that the working temperature and COP of vapor-compression machine increase and it is avoid that a part of refrigeration load is counteracted by reheat; the waste heat of engine is recovered as the main regenerating energy of dehumidifier.
与其他空调系统相比较，发动机驱动的复合空调系统有以下优点：发动机转速调节与制冷压缩机卸载调节相结合，降低能耗：采用转轮除湿技术代替冷却除湿，提高制冷机的工作温度，并避免冷量和热量抵消；发动机的余热被回收，用作转轮除湿器的主要再生能源。
This approach is applied to a continuous reforming unit. The results show that the hydrogen compressor, vapor turbulence and combined furnace are the low reliability parts of this system, while the maintenance of hydrogen compressor, heat exchanger, water cooler, separator, high pressure absorption column and combined furnace can be considered as the perfect maintenances.
研究结果表明，装置中的氢压缩机、汽轮机和三联合加热炉是系统中的可靠性薄弱环节，而氢压缩机、换热器、水冷器、分离器、高压吸收塔以及三联合加热炉的维修效果都可以认为是理想维修。
While the problem cannot be well solved by the existing thermal vapor compressor, in addition, it makes the system expending more energy with its low efficiency.
针对现在一般采用的 TVC 蒸汽喷射器并不能很好的解决压力匹配问题，加之自身效率低下，所以造成现有热电联产海水淡化系统能耗高的现状。
A method of separating propylene oxide from a mixture comprising propylene oxide and methanol, said method comprising: introducing said mixture into an extractive distillation column; additionally introducing an extracting solvent into said extractive distillation column; distilling propylene oxide overhead from said extractive distillation column as top stream; withdrawing a bottoms stream from said extractive distillation column; compressing the top stream obtained overhead in by means of at least one compressor to give a compressed vapor.
本发明涉及一种从包含氧化丙烯和甲醇的混合物中分离出氧化丙烯的方法，所述方法包括：将所述混合物引入萃取蒸馏塔中；另外将萃取溶剂引入所述萃取蒸馏塔中；从所述萃取蒸馏塔顶部蒸出氧化丙烯作为顶部料流；从所述萃取蒸馏塔中取出底部料流；借助至少一个压缩机压缩在中顶部得到的顶部料流而得到压缩蒸气。
It could obtain higher coefficient of performance (COP) than that of traditional vapor compression air conditioning because the expansion work can be used in the compressor.
膨胀功直接为压缩机所利用，因而，比蒸气压缩式空调器具有更高的制冷系数。
Automotive air conditioning compressor as the heart of the refrigeration system, serve as transport the refrigerant vapor in order to make sure the refrigeration cycle work normal.
汽车空调压缩机作为制冷系统的心脏，有输送制冷剂蒸气从而保证制冷循环正常工作的作用。
This model includes a dynamic model for the mixing process of inside refrigerant and sucked two-phase or vapor refrigerant, a dynamic model for heat transfer of the compressor shell, and a steady state model for the polytropic compression.
此模型包括吸入气相或两相制冷剂与腔内制冷剂混合过程的动态模型、壳体换热过程的动态模型和气缸内制冷剂压缩过程的稳态模型。
The function of refrigeration oil in vapor compression refrigeration system is to lubricate and pressurize the compressor. When the system runs, refrigeration oil will circulate in the system with refrigerant.
在蒸气压缩式制冷系统运行过程中，冷冻机油起着压缩机内部润滑和密封的作用，且与制冷剂一起循环。
Sensible heat defrost is a new defrosting method which avoids disadvantages of four-way valve reverse defrost and uses the sensible heat of hot refrigerant vapor from compressor to defrost.
显热除霜是针对四通阀换向除霜方式的缺陷而提出的一种新型的除霜方式，它是利用压缩机排出的高温制冷剂的显热对蒸发器进行除霜。
By using micro electromechanical system (MEMS) technology, a miniature vapor compression heat pump prototype is developed based on the optimized design of micro Wankel compressor without air outlet valve.
利用微电子机械系统技术，基于无排气阀微型三角转子压缩机的优化设计，研制了微型蒸汽压缩式热泵的样机。
Refrigeration compressor evaporator inner low pressure (low temperature) refrigerant sucked into a compressor cylinder, refrigerant vapor compressed, pressure, temperature increase;
制冷压缩机将蒸发器内的低压（低温）制冷剂吸入压缩机汽缸内，制冷剂蒸汽经过压缩，压力、温度同时升高；
On the basis of dynamic mathematical model and heat transfer model of compressor, the vapor injection and liquid injection are respectively analyzed in detail. The effects of compressor's speed, injection pressure and injection angle on refrigerant injection are studied at length.
以压缩机动态数学模型和换热模型为基础，详细阐述了喷射气态制冷剂和喷射液态制冷剂两种应用方式和作用，分析了压缩机转速、喷射压力和喷角等因素对喷液的影响。
The key techniques of the vapor compression heat pump for space use are discussed, which include microgravity two-phase heat exchangers, non-lubricated high-speed compressor etc.
分析了航天用蒸汽压缩热泵的关键技术，包括微重力相变换热器及其研究方法、无润滑高转速压缩机等。
The research object of this thesis is the steady-state simulation of home air-conditioning. Home air-conditionings generally adopt vapor-compressed refrigeration cycle, so they are made up of four main components: compressor, condenser, capillary and evaporator.
本文的研究对象是家用制冷空调系统的稳态仿真，家用制冷空调系统均采用蒸气压缩式制冷循环，该系统主要由四大部件组成：压缩机、毛细管、冷凝器、蒸发器。
Vapor-liquid heat exchangers are often used to superheat the suction vapor of compressor and to subcool the inlet liquid of throttle valves in refrigerating system.
制冷循环中往往采用回热器，使压缩机吸气过热和膨胀阀入口液体过冷。