temperature. The laws of thermodynamics imply the following relations between these two heat capacities (Gaskell 2003:23): C P − C V = V T α 2 β T {\displaystyle...
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Relations between heat capacities Heat capacity Specific heat capacity Speed of sound Thermodynamic equations Thermodynamics Volumetric heat capacity...
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=c_{p}/c_{V}} is the heat capacity ratio. The term specific heat may also refer to the ratio between the specific heat capacities of a substance at a given...
51 KB (8,130 words) - 09:25, 15 May 2024
the effective heat capacity of the gas, in that situation, will have a value intermediate between its isobaric and isochoric capacities C p {\displaystyle...
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}=V_{\mathrm {m} }T{\frac {\alpha _{V}^{2}}{\beta _{T}}}} (see relations between heat capacities), where V m {\displaystyle V_{\mathrm {m} }} is the molar...
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of the system. Important examples are the Maxwell relations and the relations between heat capacities. Thermodynamic entropy is central in chemical thermodynamics...
108 KB (13,951 words) - 13:54, 2 July 2024
This brings to two important relations between heat capacities: the constant gamma actually represents the heat capacity ratio in the ideal polytropic...
79 KB (13,211 words) - 10:41, 30 June 2024
In thermodynamics, heat is the thermal energy transferred between systems due to a temperature difference. In colloquial use, heat sometimes refers to...
74 KB (10,916 words) - 17:48, 12 June 2024
Debye model (redirect from Debye theory of specific heat capacities)
phonon contribution to the specific heat (heat capacity) in a solid. It treats the vibrations of the atomic lattice (heat) as phonons in a box in contrast...
47 KB (9,152 words) - 12:53, 29 May 2024
In thermodynamics, the Onsager reciprocal relations express the equality of certain ratios between flows and forces in thermodynamic systems out of equilibrium...
17 KB (2,568 words) - 19:29, 8 June 2024
thermodynamic relations. A specific property is the intensive property obtained by dividing an extensive property of a system by its mass. For example, heat capacity...
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Polytropic process (section Equivalence between the polytropic coefficient and the ratio of energy transfers)
{\displaystyle \gamma } is the ratio of the heat capacity at constant pressure ( C P {\displaystyle C_{P}} ) to heat capacity at constant volume ( C V {\displaystyle...
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linked by a wall permeable only to heat, and they do not change over time. Another formulation by Maxwell is "All heat is of the same kind". Another statement...
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Thermal conductivity and resistivity (redirect from Heat conductivity)
conduct heat. It is commonly denoted by k {\displaystyle k} , λ {\displaystyle \lambda } , or κ {\displaystyle \kappa } and is measured in W·m−1·K−1. Heat transfer...
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Ideal gas (section Heat capacity)
approximation). Since the heat capacity depends on the atomic or molecular nature of the gas, macroscopic measurements on heat capacity provide useful information...
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Thermodynamic equations (section Maxwell relations)
difference between the specific heat capacities is the same as the universal gas constant. This relation is represented by the difference between Cp and Cv:...
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the definition of the heat capacity by δQ = CP dT and T dS = δQ. The second term may be rewritten with one of the Maxwell relations ( ∂ S ∂ P ) T = − (...
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Laws of thermodynamics (section Onsager relations)
thermodynamic processes, such as thermodynamic work and heat, and establish relationships between them. They state empirical facts that form a basis of...
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transferred as heat, with a resultant temperature change in a body. The terms sensible heat and latent heat refer to energy transferred between a body and...
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Isobaric process (section Specific heat capacity)
mol−1 deg−1. The ratio γ {\displaystyle \gamma } of the two heat capacities is 1.4. The heat Q required to bring the gas from 300 to 600 K is Q = Δ H =...
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Carnot cycle (section Efficiency of real heat engines)
In a Carnot cycle, a system or engine transfers energy in the form of heat between two thermal reservoirs at temperatures T H {\displaystyle T_{H}} and...
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In the Heat of the Night is an American police procedural crime drama television series loosely based on the 1967 film and 1965 novel of the same title...
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Thermodynamics (redirect from Heat generation)
Fire (1824), a discourse on heat, power, energy and engine efficiency. The book outlined the basic energetic relations between the Carnot engine, the Carnot...
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Thermoelectric effect (redirect from Peltier device or Peltier heat pump)
different temperature on each side. Conversely, when a voltage is applied to it, heat is transferred from one side to the other, creating a temperature difference...
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Heat transfer physics describes the kinetics of energy storage, transport, and energy transformation by principal energy carriers: phonons (lattice vibration...
67 KB (9,679 words) - 01:04, 3 March 2024
Second law of thermodynamics (redirect from Heat engine statement)
that are bound by their own gravity, such as stars, can have negative heat capacities. As they contract, both their total energy and their entropy decrease...
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History of thermodynamics (redirect from Theory of heat)
conductivity and that differences in sensation arose from their different heat capacities. Suggestions that this might not be the case came from the new science...
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can be any system with a non-zero heat capacity, but it usually is a gas or liquid. During this process, some heat is normally lost to the surroundings...
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Quantum thermodynamics is the study of the relations between two independent physical theories: thermodynamics and quantum mechanics. The two independent...
32 KB (4,491 words) - 16:05, 1 June 2024
Maxwell's relations are a set of equations in thermodynamics which are derivable from the symmetry of second derivatives and from the definitions of the...
19 KB (3,124 words) - 07:31, 9 May 2024