英语翻译In most cases,the volume flowrate through thesteam expander is no greater than that through theturbine.It should be noted that in the case of the watercooledsystem,not only is the Hexane turbine verylarge,but the condensing temperature is only 0.3 bar,which means that the ORC system would have to becompletely hermetically sealed in order to preventproblems with maintaining a vacuum in the condenser.This is normally achieved by the turbine beingdir
英语翻译
In most cases,the volume flowrate through the
steam expander is no greater than that through the
turbine.It should be noted that in the case of the watercooled
system,not only is the Hexane turbine very
large,but the condensing temperature is only 0.3 bar,
which means that the ORC system would have to be
completely hermetically sealed in order to prevent
problems with maintaining a vacuum in the condenser.
This is normally achieved by the turbine being
directly linked to a high-speed generator with an invertor
control to produce output at 50/60 Hz.Such units
are expensive.Incontrast,the screwexpander could be
coupled directly to a two-pole generator or through a
low-cost belt drive and its cost would be only a fraction
of that of the equivalent turbine.
在大多数情况下，体积流量通过蒸汽机是不大于通过涡轮。应当指出的是，在watercooledsystem案例，不仅是在正己烷涡轮，而冷凝温度只有0.3条，这意味着ORC系统会完全密封，以preventproblems维持在凝汽器真空。这是由涡轮beingdirectly链接到一个invertorcontrol在50 / 60赫兹输出高速发电机正常了。这种元件昂贵。相反的，在screwexpander可以becoupled直接一二极发电机或通过低成本带传动及其成本将只有一小部分的等效涡轮。
在大多数情况下，体积流量通过蒸汽机是不大于通汽轮机。应当指出的是，在水冷的情况系统，不仅是正己烷的涡轮非常大，但冷凝温度只有0.3条，这意味着ORC系统必须完全密封，以防止保持在凝汽器真空问题。这是由涡轮机通常被实现直接连接到一个高速发电机与逆变器控制在50／60 Hz输出。这样的单位是昂贵的。相反的，在screwexpander可以直接耦合到一二极发电机或通过低成本带传动和它的成本将只有一小部分的等效的涡轮机。
在多数情况下,通过蒸汽机的容积流率不会大于通过涡轮机的容积流率.需要注意的是,在水冷系统的情况下,不仅己烷涡轮机非常大,而且冷凝温度只有0.3bar,意味着ORC系统必须完全严格的密封从而防止在保持冷凝器真空时会出现的问题.通常涡轮机会直接和一个高速发电机链接并通过逆变器来控制输出功率为50、60赫兹.这些机器都很昂贵.相反的,螺杆膨胀机可以直接和一个两级发电机链接或通过低价的皮带传动链接.这样的话价格只相当于涡轮机的一部分.
我自己翻译的好辛苦拜托采纳