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...
55 KB (8,416 words) - 17:05, 5 November 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 (13,956 words) - 16:39, 5 November 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 (13,178 words) - 05:32, 25 October 2024
In thermodynamics, heat is energy in transfer between a thermodynamic system and its surroundings by modes other than thermodynamic work and transfer of...
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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...
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In thermodynamics, the Onsager reciprocal relations express the equality of certain ratios between flows and forces in thermodynamic systems out of equilibrium...
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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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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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by a wall permeable only to heat, and they do not change over time. Another formulation by James Clerk Maxwell is "All heat is of the same kind". Another...
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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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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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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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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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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...
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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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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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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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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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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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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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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...
107 KB (15,584 words) - 01:16, 2 November 2024
In the Heat of the Night is an American police procedural crime drama television series loosely based on 1965 novel of the same title and the 1967 film...
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heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. A heat...
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wall can be considered as indirectly mediating transfer of energy as heat between the system and its surroundings, though the source and destination of...
45 KB (7,027 words) - 15:38, 5 November 2024
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...
34 KB (3,753 words) - 12:58, 5 November 2024