Thermodynamics Forum

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B Energy seems to disappear when gas is compressed?
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1K
I Calculating Pressure Change Filling Gas Cylinders
2
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69
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4K
I Calculating Entropy & Enthalpy: SRK, Wilson, Antoine & Clausius-Clapeyron
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5
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2K
B Cooling liquid in rigid container
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25
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2K
I Connecting the microcanonical with the (grand) canonical ensemble
2
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37
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4K
I Concept of Thermal Equilibrium in the Context of Canonical Ensemble
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5
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2K
I How is combustion energy released?
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24
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2K
A Beyond the energy equipartition, what is the uneven partitioning?
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13
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1K
B Gas cylinder at constant pressure being exposed to atmosphere, how?
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8
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1K
External Pressure vs. Internal Pressure when considering work
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16
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4K
I What is the calculation for value B in Penrose's entropy model?
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20
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2K
A Discretization of diffusion equation of a fluid in movement
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5
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1K
I Is there a Boltzmann distribution for a system with continuous energy?
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4
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1K
How Does Penrose Calculate Entropy in Cycles of Time?
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7
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7K
A Practical use of an overall heat transfer coefficient?
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14
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1K
B Does Avogadro's Law Account for Differences in Gas Density?
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9
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1K
I How Do You Calculate Equilibrium Conditions After Mixing Two Different Gases?
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3
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1K
A Average temperature in a greenhouse
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2
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1K
Enthalpy Explained: All You Need to Know
2
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50
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4K
I Is it a fluke that the triple point of water is almost exactly 0°C ?
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4
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1K
I Required kW for cooling and dehumidification + reheating
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11
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2K
B Conflicting definition of degree of freedom in Kinetic Theory of Gases
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7
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1K
I Adiabatic expansion work far exceeds isobaric of same volume, why?
3
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81
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3K
B Filling a bathtub (Hot water to cold water exchange)
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6
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3K
B Collision time interval of a gas molecule with wall of container
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6
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1K
I Energy and sand batteries (thermal energy storage)
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2
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2K
I Is the Boltzmann energy distribution an instance of energy diffusion?
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8
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1K
I 1D Heat Transfer Analytical Wall
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3
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1K
A Too much cooling air? (Power supply failures due to condensation)
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1
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1K
Partial Temperature of a Gas in a Mixture
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5
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9K
A Heat exchange in a thermal storage based on phase change materials
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5
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1K
I Disproving Carnot's Theorem: Is There an Error in My Thinking?
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3
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1K
B Compressed R134A refrigerant as a store of energy?
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5
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1K
B How long does it take for the liquid in a 55-gallon drum to thaw?
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19
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2K
B Entropy change for reversible and irreversible processes
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12
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2K
B Heat exchange after thermal equilibrium
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2
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1K
I Cannot understand formula for molar heat capacities of an ideal gas
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22
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2K
I Time required to cool down a botte of wine
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22
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1K
I Heat transfer via air cooling -- which airflow direction is best?
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3
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1K
I Confusion about the interpretation of specific volume
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18
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2K
I Question: To use or not to use? (heating bricks for energy storage)
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20
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2K
B The collision of molecules during thermal expansion
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4
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983
I Reversible / Irreversible Fundamental Equation
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3
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827
B Understanding thermodynamic equilibrium
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3
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1K
A Thermodynamics Derivative Reduction Problems
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2
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993
I Is RMS speed dependent on pressure?
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5
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2K
A How was the Birch-Murnaghan equation derived for high pressure volume behavior?
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3
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839
Radiation Safety: Understanding Exposure and Risk
2
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49
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6K
I Is this transformation irreversible?
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1
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870
I Understanding Heat Capacity and Work: Clarifying Misconceptions
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1
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1K
A Free expansion of an ideal gas and changes in entropy
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2
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1K
B The Physics of blowing a puff of air
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3
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1K
I How Is the Partition Function of BaTiO3 Calculated in a Cubic Lattice?
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1
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783
I Yet again about (real) gas compression
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20
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2K
I Heating gasses in space -- How could we make a greenhouse in space?
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5
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877
A Energy hypersurface in a phase space (statistical physics)
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1
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1K
I Exploring Work Done in Quasi-Static & Non Quasi-Static Expansion
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2
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2K
B Question regarding Heat Transfer in Carnot Engine
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1
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824
I Boltzmann Entropy Formula – Derivation
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18
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4K
A Resolve Discrepancies in Boltzmann's Equilibrium Theory
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7
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1K
B High Temperature in Gravitational Fields: Exploring the Possibility?
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2
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989
I Physics of paper absorbing Water -- Doesn't this decrease Entropy?
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1
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959
Problem understanding entropy (two different definitions?)
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2
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931
I Expelling warm air from voids - what is left afterwards?
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4
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760
B Question regarding using the expression $dE_{int}$=nC_vdT$
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3
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839
B Does gravity defy the 2nd Law?
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33
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2K
I Are Boltzman's statistics compatible with a deterministic universe?
2
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49
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2K
B How accurate is the definition of heat?
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15
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1K
Smoke Alarms and radiation from them
2
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45
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3K
Superconductivity at "ambient temperature"?
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14
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14K
B How are thermodynamic laws related to one another?
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4
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1K
A Exact Boltzmann Factor - Comparing y1 & y2 w/ 7 & 8 Particles
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1
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572
I Heat diffusion through grain mash to reach equilibrium
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3
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930
I Gas compression - does it double the energy?
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6
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2K
I Is the hot weather causing bursting airbeams when camping?
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4
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888
B Loschmidt's paradox and free gas expansion
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5
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990
B Question about the definition of a partial derivative
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13
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828
I How do we determine complex state equations for substances?
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1
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607
I Water bath and water vapor + air mixture in a closed system
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2
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841
A Will air turbulence in flexible airduct causes water condensation?
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8
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925
I Thermodynamic constant -- misunderstanding
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7
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999
I Minimization of thermodynamic equilibrium
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3
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875
I How Can Internal Energy of the Canonical Ensemble Change (Fluctuate)?
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15
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1K
Determining Heat of Fusion for Ice: Calorimetry experiment
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1
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15K
I Derivation of the Canonical Ensemble
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3
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906
I Is this proof of cp - cv correct
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2
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871
I Can adding a second peltier cooler help lower temperatures even further?
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4
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681
I Request for an example of minimum energy principle (thermodynamics)
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2
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772
I Simple model of thermal shape fluctuations of liquid interface
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1
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642
I Relative humidity question (cooling the air in a room)
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3
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852
I Problem regarding understanding entropy
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3
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815
I How to Operate a Swamp Cooler in Phoenix in June
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14
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870
I Validity of the Boltzmann Distribution
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17
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995
I Effect of attractive interactions on Gibbs free energy
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3
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890
I Calculating the thermal coefficient between the insulated interior of a telescope instrument package and the cold ambient air outside
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2
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862
I How Does Electron Spin Affect the Partition Function in Saha's Equation?
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1
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785
A Experimental Studies of the Internal Energy of a real fluid
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7
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938
I Experimenting with a vacuum pump
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10
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1K
I Questions about a System in Equilibrium
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4
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805
I Is it cooler hanging ice packs from a fishnet bag or in a thermal lunch-bag?
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3
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678

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