## Which fuel oil has the highest heating value?

Combustion values in Btu/gal for fuel oils No. 1 to No. 6.

Fuel Oil No. 1 132900 – 137000 Small Space Heaters
Fuel Oil No. 2 137000 – 141800 Residential Heating
Fuel Oil No. 4 143100 – 148100 Industrial Burners
Fuel Oil No. 5 (Light) 146800 – 150000 Preheating in General Required

## What is low heat value of oil?

The lower heating value (also known as net calorific value) of a fuel is defined as the amount of heat released by combusting a specified quantity (initially at 25°C) and returning the temperature of the combustion products to 150°C, which assumes the latent heat of vaporization of water in the reaction products is not …

How do you calculate lower heating fuel value?

Under this formula, the relationship between the lower heating value of a fuel and the higher heating value of that fuel is: LHV = HHV – 10.55(W + 9H) Where: LHV = lower heating value of fuel in Btu/lb, HHV = higher heating value of fuel in Btu/lb, W = Weight % of moisture in fuel, and H = Weight % of hydrogen in fuel.

What fuel has the lowest heat value?

Fuel Lower Heating Value (LHV) (Net Calorific Value – NCV)
Semi anthracite
Sub-Bituminous coal
Sulfur (s) 2.55

### What is low heating value?

Lower heating value is a measure of the amount of heat generated from full combustion of a hydrocarbon not accounting for the heat contained in combustion products if not returned to pre-combustion temperature.

### What is the heating value of fuel?

The heat value of a fuel is the amount of heat released during its combustion. Also referred to as energy or calorific value, heat value is a measure of a fuel’s energy density, and is expressed in energy (joules) per specified amount (e.g. kilograms).

What is LHV fuel?

The lower heating value (LHV) or higher heating value (HHV) of a gas is an important consideration when selecting a gas engine or CHP plant. Gas engines efficiency is typically quoted based upon the LHV of the gas. Whenever a hydrocarbon fuel is burned one product of combustion is water.

What is difference between HHV and LHV?

HHV stands for higher heating value while LHV stands for lower heating value. The key difference between HHV and LHV is that HHV can be determined by bringing all the products of combustion back to the original pre-combustion temperature while allowing any produced vapour to condense.

#### What is the difference between high heating value and low heating value?

The key difference between HHV and LHV is that HHV can be determined by bringing all the products of combustion back to the original pre-combustion temperature while allowing any produced vapour to condense. Meanwhile, LHV can be determined by subtracting the heat of vaporization of water from the higher heating value.

#### Should I use LHV or HHV?

The energy input into a gas engine should be defined using the LHV of the fuel. Fuel suppliers will usually quote the HHV and it will be this measure that will be used when kWh unit charges are applied for the fuel.

What do you mean by LHV and HHV?