Gas turbine manufacturers generally state the efficiency of their turbines using LHV. However, natural gas in the U.S. is bought and sold on an HHV basis, so be careful that you don't mix units. Otherwise, you will buy a gas turbine that is too small for your anticipated needs.
Lower Heating Value (LHV) MJ/kg = 43.4 Higher Heating Value (HHV) MJ/kg = 46.5
The heating value when water is released in the liquid phase during fuel combustion is called the lower heating value (LHV) or net calorific value (NCV). It considers the latent heat of vaporization released as water transitions from liquid to vapor during combustion. The LHV does not include the heat energy that would be obtained from condensing the water vapor back into liquid form.
The turbine heat rate of a steam turbogenerato is the ratio of thermal input: power generated. It is often expressed in kJ/kWh. The efficiency of the turbogenerator is simply calculated from this. The plant heat rate is the ratio of fuel energy into the plant: power generated. It is greater than the turbine heat rate, because not all of the fuel's thermal energy can be captured by the boiler, and also power station services such as fuel handling, flue gas cleaning etc consume power. Consequently, more fuel is needed for each unit of useful net power produced. Plant heat rate is often expressed in kJ/kWh or Btu/kWh. The fuel energy input used in the plant heat rate calculation may be on a higher heating value (HHV) or a lower heating value (LHV) basis, and the plant power output, although usually on a net (net of plant own consumption) is sometimes on the basis of that at the generator terminals. Whatever is used should be made clear, but it often is not.
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LHV 6 month certificate ?
You must provide details of the :- 1) Inlet air temperature 2) Fuel characteristic (LHV, sulphur contents, etc.) 3) Site elevation 4) Inlet / Exhaust loss 5) Open cycle type of GT ? Heat Recovery ? Then the supplier will calculate for you.
When a fuel is burnt and water is released in the liquid phase, the heating value is called the "lower heating value" (LHV) or "net calorific value." This measurement accounts for the energy released during combustion, excluding the energy contained in the water vapor produced, which remains in the gaseous state. In contrast, the "higher heating value" (HHV) includes the total energy released, including the condensation of water vapor back into liquid form.
The airport code for William T. Piper Memorial Airport is LHV.
The lower heating value (LHV) of diesel fuel typically ranges from about 35 to 37 megajoules per liter (MJ/L) or approximately 42 to 46 megajoules per kilogram (MJ/kg). The LHV represents the amount of energy released during combustion when water remains in vapor form and is not recovered. This value can vary slightly based on the specific composition of the diesel fuel.
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When we are making a thermodynamic analysis of a system where diesel fuel is combusted we use the heating value of the fuel. You must determine whether you should use the higher heating value (HHV), or lower heating value (LHV), based on the application. Hope this helps.
this number is going to be all over the place, but to find an average, the technical name for the quantity you are looking for is called the Lower Heating Value or LHV. Google it, and you will quickly find an average. I found 45 MJ/kg to be reasonable. LHV is the number used in combustion engines of all kinds, jet, diesel, gasoline...