HV meaning in Measurement Unit ?

Answer:

What is Heating Value mean?

The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it.

The calorific value is the total energy released as heat when a substance undergoes complete combustion with oxygen under standard conditions. The chemical reaction is typically a hydrocarbon or other organic molecule reacting with oxygen to form carbon dioxide and water and release heat. It may be expressed with the quantities:

energy/mole of fuelenergy/mass of fuelenergy/volume of the fuel

There are two kinds of enthalpy of combustion, called higher and lower heating value, depending on how much the products are allowed to cool and whether compounds like H
2O are allowed to condense.The high heat values are conventionally measured with a bomb calorimeter. Low heat values are calculated from high heat value test data. They may also be calculated as the difference between the heat of formation ΔH⦵
f of the products and reactants (though this approach is somewhat artificial since most heats of formation are typically calculated from measured heats of combustion). For a fuel of composition CcHhOoNn, the (higher) heat of combustion is 418 kJ/mol (c + 0.3 h − 0.5 o) usually to a good approximation (±3%), though it can be significantly off if o + n > c (for instance in the case of nitroglycerine, C
3H
5N
3O
9, this formula would predict a heat of combustion of 0). The value corresponds to an exothermic reaction (a negative change in enthalpy) because the double bond in molecular oxygen is much weaker than other double bonds or pairs of single bonds, particularly those in the combustion products carbon dioxide and water; conversion of the weak bonds in oxygen to the stronger bonds in carbon dioxide and water releases energy as heat.

By convention, the (higher) heat of combustion is defined to be the heat released for the complete combustion of a compound in its standard state to form stable products in their standard states: hydrogen is converted to water (in its liquid state), carbon is converted to carbon dioxide gas, and nitrogen is converted to nitrogen gas. That is, the heat of combustion, ΔH°comb, is the heat of reaction of the following process:

C
cH
hN
nO
o (std.) + O
2 (g, xs.) → cCO
2 (g) + h⁄2H
reference

Full Form	Category
Hardness Vickers	Academic & Science
High Volume	Accounts and Finance
High Value	Banking
High Viscosity	Chemistry
High Voltage	Electronics
Home Video	General
Hearing Voices	General
Helping Verb	General
Hyper V	General
Heating and Ventilation	General
Helsingoer Vaerft	General
Heller Vintage	General
Halstead Volume	General
Hidden Valley	General
Higher Volume	General
Hallux Valgus	General
High Void	General
High Vibration	General
Hairy Varmint	General
Harvard Variable	General
Heliothis Virescens	General
Hudson Valley	General
Hollywood Video	General
Heavy Verb	General
Holland V	General
Hyper Velocity	General
Holist Vitalist	General
Hybrid Vehicle	Governmental
Handicapped Veteran	Governmental
Html Viewer	Internet
Hypertext Viewer	Internet
Hypervariable	Maths
Heating Value	Measurement Unit
heavy	Medical
Hepatic vein	Medical
Herpes Virus	Medical
Home Visit	Medical
Hospital Visit	Medical
Hyperventilation	Medical
Horse Vitaman	Medical
Hypersensitivity Vasculitis	Medical
Half Value	Medical
HantaVirus	Medical
Health Visitor	Medical
Healthy Volunteer	Medical
Hepatitis Virus	Medical
Highly Virulent	Medical
Hyaline Vascular	Medical
hypervolemic	Medical
Hrvatska Vojska	Military and Defence
Hunter Vehicle	Military and Defence
High Vacuum	Physics Related
High Velocity	Space Science
Hydrogen Vent	Space Science