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EnergyPlus output of heat load

Hi all,

I have 3 different type of buildings simulation. And I have the results in eso file.

I am looking for the heat load (the heat demand/heat need to maintain the set point temperature, the heat gain from solar, people etc are not taking into account)at each time step. I used DesignBuilder, I noticed that they could do DesignDay heating calculation, but this is giving me one number of zone sensible heating (kW).

I am not sure which OUTPUT: VARIABLES OUTPUT:METERS I should looking for. I used EnergyPlus v8.3, since v8.1 they changed some of the output names, such as 'zone/sys heating rate' to 'zone air system sensible heating rate'. It caused me lot of time to figure out. Is there any doc to explain all the output variables and meters? When I type some of the output variables or meters name in google try to figure out its meaning, however, it is not a easy thing. If you guys have some tips please let me know.

What I found here is the 'Heating:EnergyTransfer' = 'Energy Transfer: Building' = total 'zone air system sensible heating rate', and from the definition of the zone air system sensible heating rate is the heating delivered by HVAC system to the zone. From my understanding, this heating rate is the heat demand minus the heat gain from solar, people etc. Please correct me if I am wrong here.

And there is 'Energy Transfer:facility', from my understanding, Facility meters contain all the energy of a fuel type. Building meters contain the sum of each zone’s energy. HVAC meters contain the energy from the air and zone HVAC system components. Plant meters contain the energy from the plant equipment. Facility = building + HVAC + Plant + exterior

I have attached the results. The red line is the energy transfer:facility, the blue line is the energy transfer:building.

image description

Not sure which specific variables or meters I should use to represent the heat load at each time step, I believe there should be, coz the fundamental method of EnergyPlus 'heat balance' is based on the calculated heat load.

Many thanks!

And additionally, I found out one ppt explain the output file format of EnergyPlus, and it shows that there is one CSV output file contains all data in the eso file, does anyone know how I could get this CSV file please? I want to use some of the output variables in timestep frequency (not monthly or hourly) to plot the results, such as electricity:facility, electricity generated etc. image description

image description

Many thanks

EnergyPlus output of heat load

Hi all,

I have 3 different type of buildings simulation. And I have the results in eso file.

I am looking for the heat load (the heat demand/heat need to maintain the set point temperature, the heat gain from solar, people etc are not taking into account)at each time step. I used DesignBuilder, I noticed that they could do DesignDay heating calculation, but this is giving me one number of zone sensible heating (kW).

I am not sure which OUTPUT: VARIABLES OUTPUT:METERS I should looking for. I used EnergyPlus v8.3, since v8.1 they changed some of the output names, such as 'zone/sys heating rate' to 'zone air system sensible heating rate'. It caused me lot of time to figure out. Is there any doc to explain all the output variables and meters? When I type some of the output variables or meters name in google try to figure out its meaning, however, it is not a easy thing. If you guys have some tips please let me know.

What I found here is the 'Heating:EnergyTransfer' = 'Energy Transfer: Building' = total 'zone air system sensible heating rate', and from the definition of the zone air system sensible heating rate is the heating delivered by HVAC system to the zone. From my understanding, this heating rate is the heat demand minus the heat gain from solar, people etc. Please correct me if I am wrong here.

And there is 'Energy Transfer:facility', from my understanding, Facility meters contain all the energy of a fuel type. Building meters contain the sum of each zone’s energy. HVAC meters contain the energy from the air and zone HVAC system components. Plant meters contain the energy from the plant equipment. Facility = building + HVAC + Plant + exterior

I have attached the results. The red line is the energy transfer:facility, the blue line is the energy transfer:building.

image description

Not sure which specific variables or meters I should use to represent the heat load at each time step, I believe there should be, coz the fundamental method of EnergyPlus 'heat balance' is based on the calculated heat load.

Many thanks!

And additionally, I found out one ppt explain the output file format of EnergyPlus, and it shows that there is one CSV output file contains all data in the eso file, does anyone know how I could get this CSV file please? I want to use some of the output variables in timestep frequency (not monthly or hourly) to plot the results, such as electricity:facility, electricity generated etc. image description

image description

Many thanks

EnergyPlus output of heat load

Hi all,

I have 3 different type of buildings simulation. And I have the results in eso file.

I am looking for the heat load (the heat demand/heat need to maintain the set point temperature, the heat gain from solar, people etc are not taking into account)at each time step. I used DesignBuilder, I noticed that they could do DesignDay heating calculation, but this is giving me one number of zone sensible heating (kW).

I am not sure which OUTPUT: VARIABLES OUTPUT:METERS I should looking for. I used EnergyPlus v8.3, since v8.1 they changed some of the output names, such as 'zone/sys heating rate' to 'zone air system sensible heating rate'. It caused me lot of time to figure out. Is there any doc to explain all the output variables and meters? When I type some of the output variables or meters name in google try to figure out its meaning, however, it is not a easy thing. If you guys have some tips please let me know.

What I found here is the 'Heating:EnergyTransfer' = 'Energy Transfer: Building' = total 'zone air system sensible heating rate', and from the definition of the zone air system sensible heating rate is the heating delivered by HVAC system to the zone. From my understanding, this heating rate is the heat demand minus the heat gain from solar, people etc. Please correct me if I am wrong here.

And there is 'Energy Transfer:facility', from my understanding, Facility meters contain all the energy of a fuel type. Building meters contain the sum of each zone’s energy. HVAC meters contain the energy from the air and zone HVAC system components. Plant meters contain the energy from the plant equipment. Facility = building + HVAC + Plant + exterior

I have attached the results. The red line is the energy transfer:facility, the blue line is the energy transfer:building.

image description

Not sure which specific variables or meters I should use to represent the heat load at each time step, I believe there should be, coz the fundamental method of EnergyPlus 'heat balance' is based on the calculated heat load.

Many thanks!


And additionally, I found out one ppt explain the output file format of EnergyPlus, and it shows that there is one CSV output file contains all data in the eso file, does anyone know how I could get this CSV file please? I want to use some of the output variables in timestep frequency (not monthly or hourly) to plot the results, such as electricity:facility, electricity generated etc. image description

image description

Many thanks