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1)  stage compression ratio
级压缩比
2)  stepwise compression transformation
级比压缩变换
1.
In the aspect of adjustment stepwise,the theorem of stepwise compression transformation is expanded and the relationship of several commonly used function transformations in these three aspects is discussed.
在调整级比方面,扩充了级比压缩变换的相关定理,并讨论了几种常用的函数变换在上述三个方面的关系。
3)  two-stage compression
二级压缩
1.
The application of two-stage compression technology in the recovery of vinyl chloride;
二级压缩技术在回收氯乙烯中的应用
4)  two-stage compression
双级压缩
1.
With the problem that the plain air source heat pump water heater used in the low temperature,this paper presents two-stage compression air source heat pump water heater.
针对普通风冷热泵热水器低温环境下的应用问题,提出了双级压缩热泵热水器系统,并在系统的双级压缩循环热力学分析基础上,给出了系统性能评价系数和各部件火用损失的计算式。
2.
The operating characteristics under the single-stage compression cycle and two-stage compression cycle model were respectively discussed.
通过实验(在人工环境实验室内)分别对实验台在单级压缩模式及双级压缩模式下的运行特性进行分析比较,显示在低温工况下双级压缩模式的运行性能比单级压缩模式有很大提高。
3.
This paper introduced a new heat pump air conditioner,which is combined two-stage compression with condenser heat recovery technology,to fit for cold regions climate.
根据寒冷地区的气候特点,提出一种将双级压缩和冷凝热回收技术相结合的带热水供应的新型热泵空调;通过室外温度为-11℃、制热兼制热水下蓄热工况的模拟运行分析,验证了新型热泵空调可以同时满足供热量和生活热水的需要。
5)  two-stage compression
两级压缩
1.
Compound system of heat pump air-conditioning and refrigerator with two-stage compression
两级压缩式热泵空调与冰箱复合系统
2.
Compared two-stage compression with single-stage compression on the terms of piston loadings and refrigeration work consumption,it is concluded that the two-stage compression has the features of lighter loadings.
讨论了大型压缩机中广泛应用的分级压缩在小型斜盘压缩机中的应用,采用MATLAB程序得出活塞受力规律,计算一个热力循环过程中的压-焓值变化大小,从动力性能、制冷功率消耗等方面对斜盘压缩机两级压缩与单级压缩进行比较,得出两级压缩比单级压缩受力更小、节省功耗,从而得出两级压缩具有更好的综合性能的结论。
3.
In order to improve the performance of the transcritical CO2-refrigeration system, the mathematical models for the single-stage expander cycle and for four types of two-stage compression cycles without expanders were developed and their performance was analyzed.
为了提高CO2跨临界制冷系统的性能,建立了单级膨胀机循环与4种不带膨胀机的两级压缩循环的数学 模型,并进行了性能计算。
6)  single-stage compression
单级压缩
1.
Difference in comprehensive performance of split compression between two-stage and single-stage compression;
斜盘压缩机两级压缩与单级压缩综合性能比较
补充资料:单级压缩机
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性质:只经过一次压缩就可达到所需压力的往复式压缩机。只有一个工作气缸。可以是卧式的或立式的,单动的或双动的。一般说来,立式比卧式运转较快,构造较紧凑,机内活塞的磨损也较小,已被广泛采用。例如一种立式双缸压缩机,在一个机体内装有两个气缸,且附有冷却水夹套。活塞连于同一曲轴上,吸入阀装于活塞上,压出阀则在气缸的上部。当活塞向下运动终了时,气缸和吸入导管相连的孔隙开启,气体经吸入阀而进入气缸,然后被压缩而经压出阀排出。非常紧凑,且无衬垫。如单级氨压缩机多作成这种型式。

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