PLUG, there is an appreciable drop in pressure and the flow is SAID to be throttled.Throttling is done in an insulated pipe with a partially open valve.From S.F.E.E,\(\LEFT( {{h_1} + \;\frac{{v_1^2}}{2} + G{z_1}} \right) + \frac{{\delta Q}}{{dm}} = \left( {{h_2} + \frac{{v_2^2}}{2} + g{z_2}} \right) + \frac{{\delta W}}{{dm}}\)\(\frac{{\delta Q}}{{dm}} = 0,\frac{{\delta W}}{{dm}} = 0\)As the potential and kinetic energy changes are negligible,Thus S.F.E.E. becomes, h1 = h2i.e. ENTHALPY remains constant.

"> PLUG, there is an appreciable drop in pressure and the flow is SAID to be throttled.Throttling is done in an insulated pipe with a partially open valve.From S.F.E.E,\(\LEFT( {{h_1} + \;\frac{{v_1^2}}{2} + G{z_1}} \right) + \frac{{\delta Q}}{{dm}} = \left( {{h_2} + \frac{{v_2^2}}{2} + g{z_2}} \right) + \frac{{\delta W}}{{dm}}\)\(\frac{{\delta Q}}{{dm}} = 0,\frac{{\delta W}}{{dm}} = 0\)As the potential and kinetic energy changes are negligible,Thus S.F.E.E. becomes, h1 = h2i.e. ENTHALPY remains constant.

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In a throttling process with negligible change in the potential and kinetic energies:

Fluid Mechanics First Law Thermodynamics in Fluid Mechanics 7 months ago

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Explanation:When a fluid flows through a constricted passage, like a partially open valve, an orifice, or a porous PLUG, there is an appreciable drop in pressure and the flow is SAID to be throttled.Throttling is done in an insulated pipe with a partially open valve.From S.F.E.E,\(\LEFT( {{h_1} + \;\frac{{v_1^2}}{2} + G{z_1}} \right) + \frac{{\delta Q}}{{dm}} = \left( {{h_2} + \frac{{v_2^2}}{2} + g{z_2}} \right) + \frac{{\delta W}}{{dm}}\)\(\frac{{\delta Q}}{{dm}} = 0,\frac{{\delta W}}{{dm}} = 0\)As the potential and kinetic energy changes are negligible,Thus S.F.E.E. becomes, h1 = h2i.e. ENTHALPY remains constant.

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Posted on 02 Dec 2024, this text provides information on Fluid Mechanics related to First Law Thermodynamics in Fluid Mechanics. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

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