enthalpy | Why Throttling Happens at Constant Enthalpy (Full Derivation)| Belief physics

Описание: #beliefphysics
#Thermodynamics, #Enthalpy, #ThrottlingProcess, #UniversityPhysics, #engineeringthermodynamics
Why Throttling Happens at Constant Enthalpy (Full Derivation)
From First Law to Isenthalpic Flow

Derivation, Physical Meaning, and Applications

Open-System Thermodynamics Explained

Why Throttling Occurs at Constant Enthalpy

Flow Processes and Thermodynamic Potentials

Conceptual + Mathematical Treatment
In this video, we develop the concept of enthalpy as a thermodynamic potential and show why the throttling process is isenthalpic. Starting from the first law of thermodynamics for open systems, we derive
dH = TdS + VdP and explain the physical meaning of each term.

The lecture then applies these results to steady-flow devices such as throttling valves and porous plugs, explaining why no useful work is produced while enthalpy remains constant.

This video is ideal for university physics and engineering students, as well as anyone preparing for advanced thermodynamics courses.
This lecture presents a rigorous treatment of enthalpy and throttling processes within the framework of open-system thermodynamics. We derive the enthalpy differential from the first law and analyze the conditions under which a flow process becomes isenthalpic.

The discussion connects theory with physical devices such as throttling valves and porous plugs, and briefly relates throttling to the Joule–Thomson effect.

Suitable for upper-level undergraduate and graduate students in physics and engineering.

Key concepts: thermodynamic potentials, steady-flow energy equation, irreversible expansion, flow work.
Understand why enthalpy is the key variable in flow processes and why throttling occurs at constant enthalpy. This video derives the enthalpy function from the first law and applies it to steady-state open systems.

We explain the physics behind throttling devices, discuss assumptions such as negligible work and heat exchange, and connect the results to real thermodynamic behavior.

🎯 Best for: University physics students, mechanical engineering students, and thermodynamics enthusiasts.

🔍 Search topics: Enthalpy function, throttling process, isenthalpic expansion, thermodynamics of flow syste
enthalpy function
enthalpy thermodynamics
throttling process
isenthalpic process
thermodynamic potentials
first law of thermodynamics
open system thermodynamics
steady flow energy equation
flow processes thermodynamics
university physics thermodynamics
undergraduate thermodynamics
graduate thermodynamics lecture
physics thermodynamics lecture
mechanical engineering thermodynamics
chemical engineering thermodynamics
engineering thermodynamics concepts
throttling valve thermodynamics
porous plug experiment
joule thomson effect
isenthalpic expansion
flow through valve thermodynamics
real gas throttling
thermodynamics derivation
conceptual thermodynamics
thermodynamics for exams
advanced thermodynamics concepts
physics lecture thermodynamics
enthalpy H
dH equals TdS plus VdP
throttling valve
isenthalpic
thermo flow process
📌 Topics covered:
• Enthalpy as a state function
• First law for flow processes
• Throttling (isenthalpic) process
• Physical interpretation of enthalpy
• Relation to Joule–Thomson effect
Belief physics
enthalpy of vaporization
enthalpy problems
enthalpy function
throttling process
isenthalpic process
thermodynamic potentials
first law of thermodynamics
open system thermodynamics
steady flow energy equation
university physics thermodynamics
undergraduate thermodynamics
graduate thermodynamics lecture
porous plug experiment
dH equals TdS plus VdP
thermodynamics for exams
thermodynamics class
enthalpy H
throttling valve