enthalpy


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Related to enthalpy: entropy, Gibbs free energy

en·thal·py (H),

(en'thal-pē),
Heat content, symbolized as H; a thermodynamic function, defined as E + PV, where E is the internal energy of a system, P the pressure, and V the volume; the heat of a reaction, measured at constant pressure, is ΔH.
Synonym(s): heat (4)
[G. enthalpō, to warm in]

enthalpy

/en·thal·py/ (en´thal-pe) the heat content or chemical energy of a physical system; a thermodynamic function equal to the internal energy plus the product of the pressure and volume. Symbol H.

en·thal·py

(H) (en'thal-pē)
Heat content, symbolized as H; a thermodynamic function, defined as E + PV, where E is the internal energy of a system, P the pressure, and V the volume; the heat of a reaction, measured at constant pressure, is ΔH.
Synonym(s): heat (3) .
[G. enthalpō, to warm in]

enthalpy

the bond energy in a biochemical reaction.
References in periodicals archive ?
These relations, along with Equations 28-30 and property functions, are sufficient to determine the one-dimensional variation in water temperature, tube temperature, air enthalpy, and air temperature in the flow direction within the heat exchanger.
where, [DELTA]Hu = enthalpy of uncured compound, [DELTA][H.
These two independent properties fix state 3 and determine enthalpy, [h.
which is the local inlet air enthalpy for the position in the next row that is just downstream in the direction of airflow.
The objective of this paper is to provide a derivation of the equations for computing the enthalpy and enthalpy differences of a liquid in the absence of a full equation of state.
4, the impact strength drops after annealing just 1 h, while the enthalpy relaxation is not detected even after 4 h annealing and thereafter proceeds gradually and slowly.
During cooling, the peak temperatures and enthalpy changes of EEA-based potassium ionomers showed substantial differences compared with those of EEA.
A monotonic increase in vaporization enthalpy and boiling point values was seen as the mass of volatile oil left decreased, or as the molecular weight of the vaporizing species increased.
The total (thermal) enthalpy of a material includes both its latent and sensible heat, or: Enthalpy = Latent Heat + Sensible Heat.
According to the first law of thermodynamics, the cooling coil load contributed by outdoor air intake is proportional to the enthalpy difference between outdoor air and return air.
In particular the designer has selected 3 i-WHISPER ENTHALPY 0553 and 2 i-WHISPER ENTHALPY 0653 for a total of 1500 kW installed.