Volt-Ampere to Kilojoule per Hour Converter

Volt-ampere (VA) is a unit of apparent power in AC electrical systems, representing the product of voltage and current. It differs from watts (real power) in AC systems where voltage and current may not be in phase.

Volt-ampere became important with the development of AC electrical systems, where the distinction between apparent power and real power became crucial. It provided a way to specify the total power capacity of AC electrical equipment regardless of power factor.

Volt-amperes are used for AC electrical equipment ratings, transformer specifications, and electrical system design. They're standard for UPS ratings, transformer capacity, and AC electrical equipment where apparent power is more relevant than real power.

Kilojoule per hour (kJ/h) is a unit of power representing the rate of energy transfer of one kilojoule per hour. It provides a convenient scale for moderate power measurements in energy system analysis and thermal applications.

Kilojoule per hour developed as a practical unit for energy system analysis and thermal calculations. It provided an appropriate scale for describing power in terms of energy per time, particularly useful in heating and cooling system analysis.

Kilojoule per hour is used in energy system analysis, thermal calculations, and heating/cooling applications. It's found in energy efficiency calculations, thermal system design, and applications where energy rates are more intuitive than electrical power units.