变工况

Research on characteristics of MCFC-GT hybrid system based on total energy concept This paper discusses the working performance of MCFC-GT hybrid system at diffirent work conditions. The results show that the hybrid system is high efficiency but the change range of work conditions is narrow. The work condition can be extended by a variable-speed gas turbine. However, this method of operation weakens the action of bottoming cycle.

2基于总能概念的MCFC-GT混合动力系统特性分析本文讨论了MCFC-GT混合动力系统不同工况下的工作性能，结果表明：MCFC-GT混合动力系统具有较高的发电效率，但系统的工况变化范围较小，可通过调节燃气轮机的转速来改善系统的变工况性能。

In order to ensure successful water injection testing wind runnel experiments of nozzles were made.

并用此模型仿真燃机其它工况，得出不同喷水量下变工况稳态特性线网图。

Some revision of the compressor characteristics and the turbine sections has been made to accommodate the increased pressure ratio, the increased airflow and the moisture and heat addition in the saturator. Based on the HAT gas turbine, the part load performance of HAT cycle has been gained.

本文推导了HAT循环燃气轮机稳态性能数学模型，并分别研究了各换热器的变工况性能，在此基础上，本文对HAT循环燃气轮机的变工况性能进行了研究，得出HAT循环具有变工况性能好的结论。

According to the full model of the whole process obtained through simulation, this paper emulated varied cases and analyzed sensitivities under the different feed flow, H_2S content, shifted gas/unshifted gas ratio, liquid/vapour ratio, N_2 flow used to stripping, H_2O concentrate in loan methanol, and calculated hydraulics of every columns.

根据模拟得到的整个工艺流程的完整模型，本文对变工况条件进行了仿真计算，对处理原料气负荷、进口原料气H_2S含量、变换气与未变换气负荷比、液气比、气提N_2量、贫甲醇水份的变化进行了工况研究与敏感性分析，并对各塔进行了水力学模拟计算分析。

Then the turbine's extraction steam flow and the main turbine's steam increase are confirmed through the analysis of the relationship between feed pump parameters and main turbine flow rate under variant working condition.

接着，分析该汽轮机在变工况下给水泵参数与主机流量的关系，确定该汽轮机在变工况下的抽汽量和主汽轮机蒸汽增加量。

On the basis of analyzing the thermodynamic properties and cycle performance of pure refrigerants, the paper optimizes their concentration while screening NARMs used in wide variable-temperature heat source. The practical applications of NARMs, such as R22/R123, R123/R125 etc., are studied in geothermal heat pump, seawater heat pump, air dehumidification system and dual-evaporator domestic refrigerator. The results show that the NARMs can match the limitation of a pinch point at the air-side exit of heat exchanger, reduce the unreasonable heat transfer temperature difference, and improve the COP of system. The above conclusion is proved by measuring the cycle performance of R12, MP39 and R11/R22 in a two-evaporator experimental system.

其次，本文在工质热物性和变工况循环性能分析基础上，筛选和优化了适应外部大变温热源约束条件的非共沸混合工质及其浓度配比；讨论了相变温差较大的非共沸混合工质（如R22/R123、R123/R125等）在地热源供热热泵、海水源供热热泵、双门冰箱和热泵空气除湿的应用，计算分析表明制冷与热泵系统采用相变温差较大的非共沸混合工质有利于弱化传热过程的&窄点&的约束，减小传热过程中的不合理温差，提高系统COP值；通过建立双蒸发温度循环系统试验装置，对R12、R22/R11和R22/R152a/R124循环性能进行实验研究，结果与理论分析一致。

However, in large differential pressure operating conditions, evaporation pressure has eased, the evaporator load requirements of the fluid volume decreased, but the actual situation the contrary, in the suction superheat unchanged, due to evaporation pressure has eased, the evaporator outlet pressure be reduced accordingly, pressure changes above and below the diaphragm, causing the main valve opening increases for increased fluid; but in a small pressure operating conditions, evaporation pressure rise, evaporator load demand for fluid volume increased, but the reality is that in the suction gas superheat unchanged, due to evaporation pressure rise, a corresponding increase in the evaporator outlet pressure, pressure difference above and below the diaphragm smaller, so that the main valve opening decreased for the reduction of liquid volume; in variable load is all about.

但在大压差工况下，蒸发压力降低，蒸发器负荷需求的液量减少，但实际情况相反，在吸气过热度不变的情况下，由于蒸发压力降低，蒸发器出口压力相应降低，膜片上下的压差变大，使主阀开度增大，供液量增加；但在小压差工况下，蒸发压力上升，蒸发器负荷需求的液量增多，但实际情况是在吸气过热度不变的情况下，由于蒸发压力上升，蒸发器出口压力相应提高，膜片上下的压差变小，使主阀开度减小，供液量减少；在变负荷下亦如此。因此热力膨胀阀在变工况下供液量的调节方面需进一步改进。

An optimum operation model is provided to determine reference states of condenser system, which can calculate energy loss values of condenser system in variable conditions, and can be used to diagnose troubles of condenser system.

提出了凝汽器优化模型和确定凝汽器运行的基准工况的方法，给出了变工况下凝汽器系统能量损失值的计算方法，可用于凝汽器系统的运行优化和故障诊断。

In order to study the characteristics of steam turbine varying conditions, it is important to study when the flow state change from the critical state to subcritical.

研究机组何时由临界工况变为亚临界工况，寻求临界压力的变化规律是研究汽轮机变工况特性的重要问题之一。

Digital simulation is an important step for torpedo turbine engine design. This paper investigates the modeling and simulation of unclosed cycle and partial flow two-stage impulse torpedo turbine in design condition and two non-design conditions. The control modes of turbine in non-design conditions are discussed.

进行鱼雷涡轮动力装置数字仿真是设计涡轮机的重要步骤，为此，该文针对鱼雷涡轮机设计和研制的需求，采用理论分析、经验推导和实验研究相结合的方法建立了鱼雷开式循环部分进气纯冲动式复速级涡轮发动机设计工况及2 种常见变工况的数学模型，着重讨论了变工况过程涡轮机的调节控制方案，提出了简便易行的开关喷嘴控制方法，并对其进行了数字仿真研究。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。