enthalpy


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Related to enthalpy: entropy, Gibbs free energy

en·thal·py

 (ĕn′thăl′pē, ĕn-thăl′-)
n. pl. en·thal·pies
Symbol H A thermodynamic function of a system, equivalent to the sum of the internal energy of the system plus the product of its volume multiplied by the pressure exerted on it by its surroundings.

[Greek enthalpein, to heat in (en-, in; see en-2 + thalpein, to heat) + -y.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

enthalpy

(ˈɛnθəlpɪ; ɛnˈθæl-)
n
(General Physics) a thermodynamic property of a system equal to the sum of its internal energy and the product of its pressure and volume. Symbol: H Also called: heat content or total heat
[C20: from Greek enthalpein to warm in, from en-2 + thalpein to warm]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

en•thal•py

(ˈɛn θæl pi, ɛnˈθæl-)

n., pl. -pies.
a quantity associated with a thermodynamic system, expressed as the internal energy of a system plus the product of the pressure and volume of the system.
[1925–30; < Greek enthálp(ein) to warm in (en- en-2 + thálpein to warm)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

en·thal·py

(ĕn′thăl′pē)
The amount of energy contained in a system.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

enthalpy

A measure of the stored heat energy contained in a substance.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.enthalpy - (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressureenthalpy - (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure; "enthalpy is the amount of energy in a system capable of doing mechanical work"
physical property - any property used to characterize matter and energy and their interactions
thermodynamics - the branch of physics concerned with the conversion of different forms of energy
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References in periodicals archive ?
In this work we report measurement of dependence of Open Circuit Voltage (OCV) on temperature and the entropy and enthalpy change associated with the free energy of lithium intercalation in the structure of an experimental carbon.
Literature values for the gas phase enthalpy of formation of H atom are given in Table 1.
The freon condensation temperature [t.sub.fc], allowing to estimate the enthalpy [h.sub.3] and pressure [P.sub.c] of freon at the evaporator's exit,
It's crucial to understand enthalpy if you want to save energy in your cold climate aquaponics system.
"If the enthalpy sensors aren't calibrated properly, it doesn't take much on either side to turn your benefit upside down and increase the load of your air conditioning equipment rather than decreasing it," warns Callan.
The hydrogen combustion enthalpy and chemical exergy vary rapidly with the increase of the reactant concentration by Method 1, while the hydrogen combustion enthalpy and chemical exergy vary a little and the reactant concentration has little effects on them by Method 1.
Some units may transfer both sensible and latent energy (enthalpy wheels) while others are sensible or latent only, and can be placed in series.
In particular the designer has selected 3 i-WHISPER ENTHALPY 0553 and 2 i-WHISPER ENTHALPY 0653 for a total of 1500 kW installed.
Guch, who has taught chemistry at the secondary and postsecondary levels, provides high school and college students with an explanation of chemistry that begins with basic concepts, such as the atom, data collection, and unit conversions, then moves on to topics like the periodic table, chemical compounds, and the mole; solids, liquids, and gases; chemical reactions, including stoichiometry, chemical equilibria, kinetics, and balancing equations; practical chemistry, including uses in nuclear weapons, buffers, and chelation therapy; and thermodynamics, with discussion of entropy, enthalpy, and free energy.