Regarding throttling
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I work at an LNG plant. I’ve been thinking about a question lately: is the main function of throttling to reduce temperature or to lower pressure? I know both are present; which one plays a major role? Or can it be adjusted according to the valve opening? Very confused! ! I need some advice.
The main function of throttling is to reduce pressure in order to achieve cooling
This post was last edited by ylb913 on 2015-8-2 09:07. The main functions of throttling include cooling and reducing pressure, in addition to simply controlling flow rate. First, it is necessary to understand the principles of the process itself as well as the control of other related parameters – namely, whether the subsequent equipment after throttling is used to control temperature or pressure.
The main function of throttling is to reduce pressure; it also has a cooling effect, depending mainly on what the medium is...
Its main function is to lower blood pressure; it also helps to reduce body temperature
Throttling refers to the phenomenon where fluid flowing in a pipe encounters a suddenly narrower section; due to the resistance present, the pressure of the fluid decreases. The function of throttling is to create a pressure difference before and after the throttling element, and by measuring this pressure difference, the flow rate can be determined.
You are referring to the principle of the orifice plate flow meter, right?
Cooling is achieved by reducing blood pressure.
Well, I just figured out this problem today. Regarding throttling, one definition is: adiabatic expansion that maintains a certain pressure difference. It can be seen from this that pressure drop is an inherent characteristic of throttling. A throttling process always results in a pressure drop, but it does not necessarily cause a temperature decrease. The temperature after throttling may increase, decrease, or remain unchanged; the way it changes depends on whether μ is positive or negative (a positive value leads to a decrease in temperature, a negative value leads to an increase, and zero results in no change). The sign of μ depends on the type and state of the medium. Well, that’s it; it would be more intuitive to draw a diagram.