1) Two-pump style
二泵式
2) two-stage compression heat pump
二级压缩式热泵
1.
To reduce the energy consumption and improve economic performance of freeze-drying, a cascade system and a two-stage compression heat pump system for freeze-dryers, in which R600a/R290 and R290 served as work fluids respectively, have been investigated.
计算结果表明,复叠式热泵循环和二级压缩式热泵循环均可用于冷冻干燥系统;在常规的冷冻干燥条件下,系统中采用复叠式热泵循环较适宜。
3) absorption heat transformer
第二类吸收式热泵
1.
The feasibility of the scheme,utilizing the absorption heat transformer to recover the geothermal waste heat,was discussed by simulating the thermodynamic cycle of the LiBr/H2O absorption heat transformer.
通过对溴化锂第二类吸收式热泵系统的模拟计算,分析研究了利用第二类吸收式热泵技术回收地热余热方案的可行性。
2.
A steady state simulation model had been developed to predict the performance of the absorption heat transformer system using LiBr/H2O as working pair.
根据溴化锂第二类吸收式热泵系统的传热、传质平衡以及各部件的传热关系,建立了系统的稳态数学模型,分析了系统主要参数对系统性能的影响。
3.
AHT doesn’tneed high grade useful heat energy,so utilizing absorption heat transformer to recovergeothermal waste heat can be a promising method for heat recovery.
第二类吸收式热泵是一种能够回收中低温废热,从而获得高温有用热能的装置,它不需要输入高温的有用能,所以节能效果显著。
4) non-engaging two-teeth gear pump
非啮合式二齿齿轮泵
1.
The flow characteristics of the non-engaging two-teeth gear pump;
非啮合式二齿齿轮泵流量特性研究
5) AHT
第二类吸收式热泵
1.
Absorption heat transformers ( AHTs ) for upgrading of heat are useful for heat recovery of low-level thermal energy.
第二类吸收式热泵(Absorption heat transformer,简称AHT)主要应用于低温废热的回收,在工业应用中,第二类吸收式热泵将低温废热中的部分热量加以回收利用,以减少对能源的消耗和浪费。
2.
Because there are usually lots of low-temperature waste heat discharged from the process of supplying heat in winter by the hot geothermal water, this paper proposes an energy-saving scheme using the AHT system to recovery the geothermal waste heat.
第二类吸收式热泵是回收低温位热能的有效装置之一。
3.
Absorption heat transformers(AHT) for upgrading of heat is very useful for heat recovery of low-level thermal energy,In industrial applications,AHT takes thermal energy from a low-temperature process stream and deliver it to a higher-temperature process.
在工业应用中,第二类吸收式热泵将废热中的部分热量加以回收利用,以减少对能源的消耗和浪费。
6) secondary pump
二次泵,二回路泵
补充资料:活塞式无油干式机械真空泵原理及简介
活塞式无油干式机械真空泵技术要求不太复杂,容易制造。
该泵的外形呈扁方形,是由四个阶梯形活塞及四个阶梯形气缸组成。与电机直联的轴通过四根连杆带动四个活塞。活塞的背面空间由次级活塞抽气,以减少泄漏和降低极限压力。每个气缸都有进气阀与排气阀。四个活塞组成三个压缩级,为了增加抽速,两个活塞是并联的,为了便于泵在大气压力下的启动,设置了辅助排气阀,当活塞的排气压力高于大气压力时,有一部分气体通过阀排入大气,当其排气压力低于大气压力时,则排出气体依次进入第三个、第四个气缸压缩后排出泵外。泵的压缩比可达到 105 ,泵的极限压力可达 1.3Pa 。泵气缸的内表面衬有聚合材料,以降低摩擦系数与磨损。这种泵的功率消耗低,散热条件较好,不需要冷却水。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条