Thermodynamics Forum

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Undergrad How to see this form for the chemical potential of an ideal gas?
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Undergrad Does Callen's Entropy Expression for a General Ideal Gas Contain an Error?
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Undergrad Effective Emission Height Calculation?
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Undergrad Is low entropy found in something very hot?
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Undergrad Warm-up time for a hollow cylinder
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Undergrad Mechanism of action of cooling from fans with misters
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Graduate Temperature and pressure change in an air vessel
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Graduate Dual gas (coupled) cyclic processes?
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Undergrad Energy balance over a methanol reformer
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Undergrad Entropy Real? End of Time? - Veritasium Video
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Undergrad Why is ##dQ = dH## still valid for chemical reaction (Callen)?
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Graduate 1st law of thermodynamics with chemical reaction?
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Undergrad Derivation of ideal gas heat capacity relationship
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Undergrad Why does Callen insist a process must be reversible here?
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Undergrad How can the maximum entropy and minimum energy principles be physical?
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Undergrad How to know when a reversible process between end states exists?
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Undergrad Helmholtz entropy of ideal gas mixture is additive?
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Graduate Efficiency of Two Carnot Engines Operating in Series
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Undergrad Finding the difference in Helmholtz free energy using thermodynamic integration
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3
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Undergrad Clarification about Aircraft Over-Wing Fog Formation (Adiabatic)
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Undergrad Is Enthalpy a Valid Concept Despite Dimensional Mismatch?
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Undergrad Galaxy redshift and thermodynamics
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Undergrad Measuring Steam Condensate from my Steam Cleaner
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Undergrad Will Heating a Sealed Container Cause All Liquid to Convert to Vapor?
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Undergrad Confusion on Callen's Maximum Work Theorem
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Undergrad Confusion about the entropy of mixing
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3
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High School Opening this jar is made easier by cooling or heating?
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8
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Undergrad How does evaporation generate cooling? Swamp coolers edition
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High School Thermal physics, COP upper bound for heat driven heat pumps
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Graduate Does anyone know typical values of cutoff ratio in diesel engines?
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Undergrad Why most probable energy and speed do not correspond?
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12
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Undergrad So what are the definitions of gas, liquid, solid?
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20
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Undergrad Kinetic-Potential energy of moving Ice
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7
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High School Energy seems to disappear when gas is compressed?
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3
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Graduate Understanding Free Expansion of Gas: Velocity Distribution Function Evolution
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14
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Undergrad Calculating Pressure Change Filling Gas Cylinders
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Undergrad How do we calculate the energy we used to do something?
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Undergrad Calculating Entropy & Enthalpy: SRK, Wilson, Antoine & Clausius-Clapeyron
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High School Why use this premise behind the Maxwell-Boltzmann curve?
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High School Cooling liquid in rigid container
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Graduate Measurement uncertainty due to thermal noise
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Undergrad Connecting the microcanonical with the (grand) canonical ensemble
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High School Entropy & Information Content: Examining the Difference
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High School What is meant by "upper limit of work done on Earth"?
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Undergrad Concept of Thermal Equilibrium in the Context of Canonical Ensemble
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Undergrad Atomization and Evaporation: Understanding the Energy Exchange
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Undergrad Independence of Trace-Partition function
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Undergrad How is combustion energy released?
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High School Heat transfer -- Several questions
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Graduate Beyond the energy equipartition, what is the uneven partitioning?
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High School Gas cylinder at constant pressure being exposed to atmosphere, how?
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Undergrad External Pressure vs. Internal Pressure when considering work
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High School Thermos Bottle: Stainless Steel Inside & Out - 24h Cold & 12h Hot
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Undergrad What is the calculation for value B in Penrose's entropy model?
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Graduate Discretization of diffusion equation of a fluid in movement
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Undergrad Is there a Boltzmann distribution for a system with continuous energy?
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Undergrad Wall material effect on Van der Waals gas?
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Graduate How Does Penrose Calculate Entropy in Cycles of Time?
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7
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Graduate Steady state confined flow field: Is it cyclic?
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9
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Graduate Practical use of an overall heat transfer coefficient?
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14
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High School Does Avogadro's Law Account for Differences in Gas Density?
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Undergrad How Do You Calculate Equilibrium Conditions After Mixing Two Different Gases?
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Undergrad Just for fun: treadmill air conditioner efficiency calculation
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Graduate Average temperature in a greenhouse
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Undergrad Enthalpy Explained: All You Need to Know
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Undergrad Is it a fluke that the triple point of water is almost exactly 0°C ?
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Undergrad Required kW for cooling and dehumidification + reheating
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High School Conflicting definition of degree of freedom in Kinetic Theory of Gases
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Undergrad Adiabatic expansion work far exceeds isobaric of same volume, why?
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High School Filling a bathtub (Hot water to cold water exchange)
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High School Collision time interval of a gas molecule with wall of container
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Undergrad Energy and sand batteries (thermal energy storage)
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Undergrad Is the Boltzmann energy distribution an instance of energy diffusion?
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Undergrad 1D Heat Transfer Analytical Wall
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Graduate Too much cooling air? (Power supply failures due to condensation)
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Graduate Partial Temperature of a Gas in a Mixture
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Graduate Heat exchange in a thermal storage based on phase change materials
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Undergrad Disproving Carnot's Theorem: Is There an Error in My Thinking?
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Undergrad Centrifugal separation into hot & cold air streams?
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High School Compressed R134A refrigerant as a store of energy?
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High School How long does it take for the liquid in a 55-gallon drum to thaw?
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High School Entropy change for reversible and irreversible processes
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Undergrad What is the most efficient way to cool air using a Vortex Tube (Ranque-Hilsch)?
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Undergrad Vacuum Drying Vegetables w/ IR Heaters: Investigating Increased Batch Time
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High School Heat exchange after thermal equilibrium
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Undergrad Cannot understand formula for molar heat capacities of an ideal gas
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Undergrad Time required to cool down a botte of wine
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Undergrad The Effect of Wind on the Rate an Outside Spigot Freezes
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Undergrad Heat transfer via air cooling -- which airflow direction is best?
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Undergrad Surface Absorptance Without Radiant Emittance
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Undergrad Heating a tungsten filament to find out the maximum brightness emitted
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Undergrad Confusion about the interpretation of specific volume
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Undergrad Question: To use or not to use? (heating bricks for energy storage)
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High School Shape & Dimensions of Containers: Impact on the Maxwell Boltzmann Distribution
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High School The collision of molecules during thermal expansion
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Undergrad Reversible / Irreversible Fundamental Equation
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Undergrad Temperature change due to mixing liquids, heating and heat losses
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High School Understanding thermodynamic equilibrium
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Graduate Thermodynamics Derivative Reduction Problems
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High School Can we use molecular speed of gas formula also for the air?
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