rainbow's profile - activity

Ok, thanks for your clarity!

Ok, thank you!

I'm running some simulations by asking EnergyPlus (through the IDF) to output Output:Meter,Electricity:HVAC (an output meter which measures the electric energy consumption in Joule).

If I choose an 'hourly' reporting frequency, like this:

Output:Meter,Electricity:HVAC,hourly; !- [J]

I guess that I can obtain Wh from J in this way:

Wh = J / 3600 s,

E.g.: 4 J ==> 0.11111 Wh

But, if I choose a reporting frequency equals to 'timestep', like this:

Output:Meter,Electricity:HVAC,timestep; !- [J]

where 'timestep' = 4 (so there are 4 timesteps per hour, hence I have 15-minutes timesteps):
how can I convert that value of energy measured in Joule (but "sampled" every 15-minutes) to a value measured in Wh?

Is it sufficient to divide it by a factor of 3600, and then divide it by 4 (n°timesteps per hour), to finally obtain an energy value expressed in Wh?

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly' I'm running some simulations by asking Energy

Convert Joule to Wh, when 'reporting frequency' is different from 'Hourly' I'm running some simulations, monitoring an o

Yes, it's a known issue of the 9.3.0 release. This pre-release of EnergyPlus fixed that bug.

I'm working on a building with:

• 1 VRF System (Outdoor Unit);
• 3 VRF Terminals (Indoor Units)

At this moment, I generated the IDF by using OpenStudio SketchUp Plugin.

My aim is to know the total electric energy consumed by the whole HVAC system of the building during a certain period of time.

Reading the EnergyPlus docuentation, I've seen these two output variables:

1. VRF Heat Pump Cooling/Heating Electric Energy: it measures electricity consumption of the VRF heat pump (outdoor unit) for the time period being reported. It includes electricity used by the compressor and the condenser fan.

2. Zone VRF Air Terminal Cooling/Heating Electric Energy: it's the electricity consumption associated to a single zone terminal unit (indoor unit) for a certain time period. This value is calculated for each HVAC system timestep being simulated, and the results are summed for the time step being reported. There's this variable for each VRF Terminal Unit.

So, I thought that, to calculate the total electric energy consumption of the whole HVAC of the building, I could sum up the values of these variables (in this way, I sum up "Indoor Units" + "Outdoor Unit" consumptions).

What do you think, is it ok, or should I consider other output variables in order to calculate the total electric consumption?

I read here that the building load magnitude calculated by using a 1-zone model will NOT be significantly different fro

I read here that the building load magnitude calculated by using a 1-zone model will NOT be significantly different fro

Ok, very clear. Before I opened this thread, I thought that, in Openstudio, by simply associating a thermostat to a zon

Ok, very clear. Before I opened this thread, I thought that, in Openstudio, by simply associating a thermostat to a zon

Ok, very clear. Before I opened this thread, I thought that, in Openstudio, by simply placing a thermostat into a zone

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

I read here that the building load magnitude calculated by using a one-zone model will NOT be significantly different f

Ok, very clear. Before I opened this thread, I thought that by simply placing a thermostat into a zone with no HVAC in

Thanks Aaron! So (correct me if I'm wrong), it's necessary to associate a heating schedule + a cooling schedule + a hea

Thanks Aaron! So (correct me if I'm wrong), it's necessary to associate a heating schedule + a cooling schedule + a hea

Thanks Aaron! So (correct me if I'm wrong), it's necessary to associate a heating schedule + a cooling schedule + a hea

Thanks Aaron! So (correct me if I'm wrong), it's necessary to associate a heating schedule + a cooling schedule + a hea

Thanks Aaron! So (correct me if I'm wrong), it's necessary to associate a heating schedule + a cooling schedule + a hea