coefficient of performance造句

例句与造句

1. Comparing this cycle with the evaporation compression refrigerating cycle , the new cycle has more high coefficient of performance ( cop ) under the same condition
   该循环与现在冰箱中所采用的蒸气压缩式制冷循环相比较，在条件相同的情况下具有较高的性能系数。
2. The working performances of the refrigerator were presented . it was concluded that the performances of unit tube were excellent , average refrigerating capacity was 66 . 4w and coefficient of performance was 0 . 2
   通过对单元管实际运行试验表明该单元管具有良好的制冷性能，平均制冷功率达66 . 4w ，性能系数达到0 . 2 。
3. On the basis of these results , the optimal operating temperature of the solar collector and the maximum overall coefficient of performance ( cop ) of the cooling modes of the system are derived
   又在此基础上，结合太阳能集热器作为系统的热源，对整个系统的最优综合性能进行分析，得出了最优集热器的运行温度以及在该温度下的系统最优综合效率性能系数。
4. It leads to the coefficient of performance and exergy efficiency increased . application of this technology to shipping cold store can reduce energy consumption effectively and achieve satisfactory economic and social benefits
   所以把这项技术综合应用于船舶冷库系统中，可以有效地降低系统运行的能耗，达到了节能的目的，取得良好的经济效益和社会效益。
5. Because the improvement of coefficient of performance of the gehp mainly due to the use of waste heat from surroundings , we suggest that we should use energy grade theory to evaluate the performance of heat pump
   由于能级平衡理论分析考虑了(火无)的作用，而热泵供暖时其性能系数的提高主要是利用了环境热量，所以建议采用能级平衡理论来分析评价热泵的性能。
6. It's difficult to find coefficient of performance in a sentence. 用coefficient of performance造句挺难的
7. Using numerical simulation method , detailed dynamic pressure variations , transient gas temperature and mass flow rate in the ptr , and the coefficient of performance of ptr and the exergy losses of all parts of ptr were obtained
   用数值模拟方法得到了制冷机内部各点的压力、温度、质量流率等参数的瞬时变化情况及整机的制冷系数，并得到了制冷机各部件的（火用）损失及整机的（火用）效率。
8. To expand the usage of the system models , the dynamic characteristics between the hfc refrigerant and hcfc refrigerant in the existing system is simulated . the comparison shows that r407c refrigerant is available in the existing equipment , but has lower coefficient of performance
   R407c和r22工质系统的对比仿真研究表明，前者可以作为后者的替代工质在现有系统上使用，但性能系数略有降低。
9. Two main categories of ground - source heat pumps ( horizontal and vertical ) are analyzed technically and economically . monthly heating / cooling capacities and coefficients of performance for air - source and vertical and horizontal ground - source systems are calculated
   以地源热泵空调系统为研究对象，从技术和经济性两方面对两种地源热泵(水平埋管、垂直埋管)与常规空气源热泵空调系统进行了分析和比较。
10. A rig was designed on the basis of thermodynamic analysis . some factors , including mixture composition , cycle compression ratio and suction ratio of circumfluence fluid of the rectifying column , are analyzed of their impacts on coefficient of performance
    在对新循环进行了热力学分析的基础上，设计了自动复叠制冷循环实验台，分析了循环工质配比、循环压比及精馏柱回流液的抽取率对循环系统cop的影响。
11. It is found that for the ptr studied the coefficient of performance of the double inlet type can be improved from 0 . 091 to 0 . 108 and from 25 . 04 % to 29 . 95 % for the corresponding exergy efficiency compared with the orifice type
    计算结果表明：针对所研究的脉管制冷机从小孔型到双向进气型的改进使得制冷机的制冷系数从0 . 091提高到了0 . 108 ， （火用）效率从25 . 04 %提高到了29 . 95 % ；回热器和小孔阀是制冷机中产生（火用）损失的主要部件。
12. 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。
13. 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。
14. 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。
15. 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。
16. 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。
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