Definition Required -LCV

[STYMIEDPIPER]

I am reviewing a document from an European vendor which depicts a value for 'LCV' relating to natural gas and combustion.

Please advise definition of 'LCV'

Thanks in advance for your cooperation and consideration

 

[25362]

LCV = low calorific value, aka NCV = net calorific value, aka LHV = low heating value.

I quote from Wikipedia:

The quantity known as higher heating value (or gross calorific value or gross energy) is determined by bringing all the products of combustion back to the original pre-combustion temperature, and in particular condensing any vapour produced.

The quantity known as lower heating value (or net calorific value) is determined by subtracting the heat of vaporization of the water produced by combustion from the higher heating value.

 

[STYMIEDPIPER]

Thanks for the info
Is the term 'LCV' commonly used in the USA??
I have previously seen/used the LHV term

 

[mbeychok]

STYMIEDPIPER:

No, the term LCV (low caloric value) is not commonly used in the USA. The commonly used terms in the USA are:

(1) LHV (lower heating value) or NHV (net heating value)
(2) HHV (higher heating value) or GHV (gross heating value)

where:

HHV - LHV = the heat of vaporization required to vaporize the water produced by the combustion of the fuel.

Milton Beychok
(Visit me at www.air-dispersion.com)
.

 

[STYMIEDPIPER]

Great
Thank you for the info