Question:

Convert kVA to kg/h?

How to convert kVA (kilo-volt Ampere) to kg/h (kilogram per hour) for diesel generator set (genset)? I want to know the relation about the energy produced (kVA) to the fuel that used (kg/h) in the genset, either it used more diesel fuel or not. i.e the kVA amount produced is 106kVA and the rpm is 1500rpm

Answer:

You cannot convert KVA to kg/hr. KVA is a unit for power (rated capacity) and kg/hr is the unit for mass flow rate. There is no direct relation between them.
Man, your question is really cryptic. I assume that you are trying to relate kg/h (kilogram per hour) of (maybe fuel) into the engine with kVA (kilo-volt amperes) out of a generator that it may run. There is no conversion factor. But there are some rules of thumb that some can make, based on the size and service of the engine. But you did not provide even that scant information, either.
You cannot convert between different types of units. KVA is a unit of power. kilogram per hour is a flow rate. What you are asking is for formula for the efficiency of a diesel generator in terms of energy delivered per liter or kg of fuel, and that is a function of the diesel design, and maintenance. In other words, it can be measured, not calculated.
There is no way to make a direct conversion, but an estimate can be attempted, in lieu of an actual measurement. For the size of generator and speed you are using, a reasonable fuel rate of about 9.1 gal/hr is probably representative for full load. In that case, assuming 3.19 kg/gallon, you will have 29 kg/hr for your engine. So, for full load, you might use a factor of 3.65 kVA per 1kg/hr. As the load decreases, your conversion factor will reduce somewhat.

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