Re: [EnergyPlus_Support] DX Coil Runtime fraction

["Jean Marais jeannieboef@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

Effectively, yes. It's a model. A combination of curves are used to predict runtime fraction. Hopefully the results for energy are close at the end of say an hour.

On 13 Nov 2015 5:30 am, "Fakeha Sehar fakeha_s@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Whenever the DX cooling coil, two speed starts to operate there is a power surge. My timestep is 1 minute and I observe that for the first timestep, the DX coil runtime fraction is 1 which is due to the compressor running for longer duration (full 1 minute) to meet the cycling losses.

For each timestep, DX coil runtime fraction after the first minute is less than 1 e.g. 0.82. What does this mean? The compressor is cycling during each timestep of 60secs?

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Posted by: Jean Marais <jeannieboef@xxxxxxxxx>

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