例句與造句

1. Comparing this cycle with the evaporation compression refrigerating cycle , the new cycle has more high coefficient of performance ( cop ) under the same condition
   該循環(huán)與現(xiàn)在冰箱中所采用的蒸氣壓縮式制冷循環(huán)相比較，在條件相同的情況下具有較高的性能系數(shù)。
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
   通過對單元管實(shí)際運(yùn)行試驗(yàn)表明該單元管具有良好的制冷性能，平均制冷功率達(dá)66 . 4w ，性能系數(shù)達(dá)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
   又在此基礎(chǔ)上，結(jié)合太陽能集熱器作為系統(tǒng)的熱源，對整個系統(tǒng)的最優(yōu)綜合性能進(jìn)行分析，得出了最優(yōu)集熱器的運(yùn)行溫度以及在該溫度下的系統(tǒng)最優(yōu)綜合效率性能系數(shù)。
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
   所以把這項(xiàng)技術(shù)綜合應(yīng)用于船舶冷庫系統(tǒng)中，可以有效地降低系統(tǒng)運(yùn)行的能耗，達(dá)到了節(jié)能的目的，取得良好的經(jīng)濟(jì)效益和社會效益。
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
   由于能級平衡理論分析考慮了(火無)的作用，而熱泵供暖時其性能系數(shù)的提高主要是利用了環(huán)境熱量，所以建議采用能級平衡理論來分析評價熱泵的性能。
6. It's difficult to find coefficient of performance in a sentence. 用coefficient of performance造句挺難的
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
   用數(shù)值模擬方法得到了制冷機(jī)內(nèi)部各點(diǎn)的壓力、溫度、質(zhì)量流率等參數(shù)的瞬時變化情況及整機(jī)的制冷系數(shù)，并得到了制冷機(jī)各部件的（火用）損失及整機(jī)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工質(zhì)系統(tǒng)的對比仿真研究表明，前者可以作為后者的替代工質(zhì)在現(xiàn)有系統(tǒng)上使用，但性能系數(shù)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
   以地源熱泵空調(diào)系統(tǒng)為研究對象，從技術(shù)和經(jīng)濟(jì)性兩方面對兩種地源熱泵(水平埋管、垂直埋管)與常規(guī)空氣源熱泵空調(diào)系統(tǒng)進(jìn)行了分析和比較。
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
    在對新循環(huán)進(jìn)行了熱力學(xué)分析的基礎(chǔ)上，設(shè)計了自動復(fù)疊制冷循環(huán)實(shí)驗(yàn)臺，分析了循環(huán)工質(zhì)配比、循環(huán)壓比及精餾柱回流液的抽取率對循環(huán)系統(tǒng)cop的影響。
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
    計算結(jié)果表明：針對所研究的脈管制冷機(jī)從小孔型到雙向進(jìn)氣型的改進(jìn)使得制冷機(jī)的制冷系數(shù)從0 . 091提高到了0 . 108 ， （火用）效率從25 . 04 %提高到了29 . 95 % ；回?zé)崞骱托】组y是制冷機(jī)中產(chǎn)生（火用）損失的主要部件。
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 )
    本文主要對一種新型吸收式制冷系統(tǒng)一中壓雙效復(fù)疊吸收式制冷系統(tǒng)進(jìn)行了研究，目標(biāo)主要是滿足直燃型戶式空調(diào)系統(tǒng)的小型化、風(fēng)冷條件，并具有較高的性能系數(shù)。
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
    本文通過對兩種系統(tǒng)方案進(jìn)行比較分析，確定了水環(huán)熱泵系統(tǒng)的基本方案，經(jīng)過定性分析和設(shè)計計算，進(jìn)行了壓縮機(jī)的選型、工質(zhì)的選擇、熱力系統(tǒng)的循環(huán)計算等基本設(shè)計，同時應(yīng)用熱力學(xué)分析的一些基本方法，討論了如何評價熱泵系統(tǒng)的性能系數(shù)，并對電廠循環(huán)水余熱回收熱泵系統(tǒng)進(jìn)行了(火用)分析，得到了熱泵過程(火用)效率的計算公式，建立了熱泵?熱機(jī)聯(lián)合機(jī)組優(yōu)化模型，還對熱泵系統(tǒng)的主要換熱設(shè)備進(jìn)行了詳細(xì)的結(jié)構(gòu)設(shè)計和阻力計算，最后對熱泵系統(tǒng)進(jìn)行了技術(shù)經(jīng)濟(jì)分析和評價。
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
    本課題通過實(shí)驗(yàn)測試井水進(jìn)口溫度、進(jìn)出口溫差以及在不同溫差下?lián)Q熱器面積匹配對系統(tǒng)性能的影響。實(shí)驗(yàn)結(jié)果表明，夏季工況下，隨著井水進(jìn)口溫度的升高，進(jìn)出口溫差的增大，系統(tǒng)制冷量減小，機(jī)組cop降低，系統(tǒng)運(yùn)行性能惡化。冬季工況下，隨著井水進(jìn)口溫度的升高，進(jìn)出口溫差的減小，系統(tǒng)的制熱量增加，機(jī)組cop提高，系統(tǒng)運(yùn)行性能優(yōu)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
    摘要通過對水源熱泵機(jī)組定溫差、變工況運(yùn)行時蒸發(fā)器側(cè)和冷凝器側(cè)水溫對機(jī)組性能影響的分析，得到了機(jī)組性能隨兩側(cè)水溫變化的數(shù)學(xué)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
    摘要考慮到金屬氫化物床的傳熱和換熱器間顯熱回收等實(shí)際因素，提出了升溫型金屬氫化物熱泵性能系數(shù)計算公式，為合理選擇金屬氫化物對，以及調(diào)整熱泵的各種工藝參數(shù)提供了理論依據(jù)。
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