coefficient of performance中文是什么意思

• 使用系数, 效率
• 特性系数性能系数效率系数
• 有效系数
• 制冷系数

• coefficient    adj. 共同作用的。 n. 1.共同作用；协同因素。 ...
• performance    n. 1.执行，实行，履行；完成；实现；偿还。 2.行为 ...
• performance coefficient    冷冻系数
• admiralty performance coefficient    海军系数
• coefficient of performance cop    成绩系数
• coefficient of performance of heat pump    热泵性能系数
• coefficient of refrigerating performance    冷冻性能系数
• reduced coefficient of performance    性能的减缩系数
• of performance    表现的
• performance    n. 1.执行，实行，履行；完成；实现；偿还。 2.行为，动作，行动；工作。 3.性能；特性。 4.功绩；成绩。 5.演奏；弹奏；演出；(驯兽等的)表演；把戏。 6.【物理学】演绩。 a performance test 【机械工程】性能试验。 high performance 高度准确，性能优良。 an afternoon performance 午后的演出，日戏。 two performances a day 一天演两场。 a fine [wretched] performance 成绩好[坏]。 put a monkey through its performances 使猴子玩种种把戏。 performance in [of] horse-manship 马戏；马术表演。
• a-coefficient    自发发射系数
• coefficient    adj. 共同作用的。 n. 1.共同作用；协同因素。 2.【数，物】系数，率；程度。 coefficient of absorption 吸收率[系数]。 coefficient of expansion 膨胀系数。 coefficient of displacement 排水量[系数]。
• coefficient a    辅酶a
• s coefficient    恩格尔系数
• benefit performance; charity performance    义演
• performance index performance indicator    绩效指针
• a ballet performance    芭蕾舞演出
• a bravura performance    精采的演奏
• a disgusting performance    丑恶表演
• a fabulous performance    精采的表演
• a flawless performance    完美的表演
• a lifeless performance    死气沉沉的演出
• a lively performance    一场生动的表演
• a skilful performance    熟的表演
• a stupid performance    乏味无聊的表演

• In this paper , a new type of absorption refrigeration system - middle pressure double - effect cascade cycle was studied . the aim is to meet gas - fired air conditioning miniaturization and air - cooling . in addition , the system should have high coefficient of performance ( cop )
  本文主要对一种新型吸收式制冷系统一中压双效复叠吸收式制冷系统进行了研究，目标主要是满足直燃型户式空调系统的小型化、风冷条件，并具有较高的性能系数。
• Based on the comparative analysis of two available heat system plan , the paper selects the water - water heat pump system plan . after a series of character analysis , design calculation ; the style of compressor including media choosing and its circle dynamic calculation for the thermodynamic system is determined . besides this , based on some basic measure of thermodynamic analysis , the heat pump coefficient of performance is discussed ; the exergy analysis for the water - water heat plan is conducted ; the calculation formula of heat pump exergy efficiency is derived ; an optimal model for heat pump together with thermal machine is established and the main exchanger equipment in heat pump system including its resistance calculation is designed in details
  本文通过对两种系统方案进行比较分析，确定了水环热泵系统的基本方案，经过定性分析和设计计算，进行了压缩机的选型、工质的选择、热力系统的循环计算等基本设计，同时应用热力学分析的一些基本方法，讨论了如何评价热泵系统的性能系数，并对电厂循环水余热回收热泵系统进行了(火用)分析，得到了热泵过程(火用)效率的计算公式，建立了热泵?热机联合机组优化模型，还对热泵系统的主要换热设备进行了详细的结构设计和阻力计算，最后对热泵系统进行了技术经济分析和评价。
• The experimental results showed that : in the summer operating mode , the refrigerating capacity and coefficient of performance of the system decreased with the increase of the temperature difference between supply and return ground - water and the water supply temperature ; in the winter operating mode , the refrigerating capacity and coefficient of performance of the system increased with the decrease of the temperature difference between supply and return ground - water and the increase of the water supply temperature . it also showed that , change the are of heat exchanger has great influence of refrigeration system
  本课题通过实验测试井水进口温度、进出口温差以及在不同温差下换热器面积匹配对系统性能的影响。实验结果表明，夏季工况下，随着井水进口温度的升高，进出口温差的增大，系统制冷量减小，机组cop降低，系统运行性能恶化。冬季工况下，随着井水进口温度的升高，进出口温差的减小，系统的制热量增加，机组cop提高，系统运行性能优化。
• Deduces a mathematical model reflecting the relationship between the coefficient of performance ( cop ) of water - source heat pump units and the water temperatures on evaporator side and condenser side through analysing the influence of the water temperatures of the two sides on the cop under constant temperature difference and variant working conditions
  摘要通过对水源热泵机组定温差、变工况运行时蒸发器侧和冷凝器侧水温对机组性能影响的分析，得到了机组性能随两侧水温变化的数学模型。
• The formulae for calculating coefficients of performance ( cop ) of metal hydride heat pumps ( mhhp ) for temperature upgrading are proposed after considering practical factors such as heat transfer of metal hydride bed and sensible heat exchange , which provide theoretical bases for reasonable selecting metal hydrides pair and adjusting diversified process parameters of mhhp
  摘要考虑到金属氢化物床的传热和换热器间显热回收等实际因素，提出了升温型金属氢化物热泵性能系数计算公式，为合理选择金属氢化物对，以及调整热泵的各种工艺参数提供了理论依据。
• The relationships between the cycle cop ( coefficient of performance ) , the cooling capacities ( qe ) of the system and the hot air temperature , between cop , qe and the ambient air temperature , relative humidity , between cop , qe and the wet air temperature at the generator upside , between the system general efficiency and the hot air temperature are found
  得出系统制冷量、 cop值、总效率随环境空气温度和相对湿度、太阳能集热板出口空气温度以及发生器出口空气温度的变化关系。通过研究发现，当热空气达到一定温度时，循环具有较好的稳定性。
• This paper offers some performance data calculate with computer program and figures which variation of performances of refrigeration in different refrigerants and circle with evaporating temperature . it shows that it is feasible to calculate thermodynamic properties of refrigerants with equation of state pr in ideal circle and new refrigerants sfuch as r134a , r152a have not more coefficient of performance ( cop ) than r22 in single - press circle but still have preferable practical value in freezing refrigeration ; the results also demonstrate the importance and need for applying mixed - refrigerant in freezing
  本文给出了几种制冷工质在单级和双级压缩制冷循环下的一些性能数据及各性能随蒸发温度变化比较图。结果表明，利用pr方程得出的制冷工质物性，可用于计算制冷循环性能；在单级制冷循环中， r12和r22仍具有较高的制冷系数，但新工质如r134a 、 r152a在较低温度制冷中具有很高的研究价值；计算也表明，在较低温度制冷中，混合工质的研究是极有价值的。
• It is illustrated that a ferroelectric stirling refrigeration cycle may possess the condition of perfect regeneration and its coefficient of performance ( cop ) is equal to that of a carnot refrigeration cycle , while a ferroelectric ericsson refrigeration cycle does not possess the condition of perfect regeneration so that its cop is smaller than that of a carnot refrigeration cycle
  阐明了铁电斯特林制冷循环具有理想回热条件，其制冷系数等于卡诺制冷系数：铁电埃里克森制冷循环不具有理想回热条件，其制冷系数小于卡诺制冷系数。
• To improve the performance of ashp , an improved ashp system is presented . different from the original system , the new one can control the refrigerant flow rate by the sub - cooling of condenser and adjust the sup - heating of the compressor inlet vapor by the heater in accumulator . the simulation shows the new system not only has better dynamic characteristic of frost and defrost of ashp , but also has higher coefficient of performance
  为改善空气源热泵机组的结霜除霜动态性能，提出了一种利用冷凝器过冷度来调节制冷剂流量，在气液分离器里增加电热装置保持压缩机进口过热度的改进型系统，结果表明这种改进型系统不但可以改善系统的运行性能，同时能改善系统运行的经济性，为机组的技术升级和产品更新提供了一个新的途径。
• The influence of these irreversibilities on the performance of an absorption refrigerator whose working fluid flows continuously is investigated . the optimal relation among the coefficient of performance , cooling rate and overall heat - transfer area of the refrigerator is derived , from which some important performance bounds of the refrigerator are determined
  这些不可逆性对工质作连续流动的吸收式制冷机性能的影响被揭示，并导出了制冷机制冷系数、制冷率和总热传导面积间的优化关系，由此确定了制冷机的重要性能界限。

• coefficient of performanceとは意味：性能係数｛せいのう けいすう｝、成績係数｛せいせき けいすう｝◆消費電力1kw 当たりの冷暖房能力(kw)を表したもので、この値が大きいほど運転効率が高い。◆【略】COP