Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question

Revision history [back]

click to hide/show revision 1
initial version

Convert Joule to Wh, when 'reporting frequency' is different from 'Hourly'

I'm running some simulations, monitoring an output variable about to the energy consumption. EnergyPlus, at the end of the simulation, outputs the variable in Joule.

If I choose an 'Hourly' reporting frequency, I guess that I can obtain Wh from J in this way:

Wh = J / 3600 s, so e.g.:

4 J ==> 0.11111 Wh

But, if I choose a reporting frequency equals to 'Timestep', where 'Timestep' = 4 (so there 4 timesteps per hour, so I have 15-minutes timesteps), how can I convert that value in Joule ("sampled" every 15-minutes) to a value measured in Wh?

Is it sufficient to divide the value in Joule by a factor of (3600 [s] * 15 [min])?

Convert Joule to Wh, when 'reporting frequency' is different from 'Hourly'

I'm running some simulations, monitoring an output variable about to the energy consumption. EnergyPlus, at the end of the simulation, outputs the variable in Joule.

If I choose an 'Hourly' reporting frequency, I guess that I can obtain Wh from J in this way:

Wh = J / 3600 s, so e.g.:

4 J ==> 0.11111 Wh

But, if I choose a reporting frequency equals to 'Timestep', where 'Timestep' = 4 (so there 4 timesteps per hour, so I have 15-minutes timesteps), how can I convert that value in Joule ("sampled" every 15-minutes) to a value measured in Wh?

Is it sufficient to divide the value in Joule by a factor of (3600 [s] * 15 [min])?

Convert Joule to Wh, when 'reporting frequency' 'Reporting Frequency' is different from 'Hourly'

I'm running some simulations, monitoring an simulations by asking EnergyPlus (through the IDF) to output variable about to the Output:Meter,Electricity:HVAC output meter; it measures the electric energy consumption. EnergyPlus, at the end of the simulation, outputs the variable consumption in Joule.

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

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

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

Wh = J / 3600 s, so e.g.:

s,

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

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

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

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

Is it sufficient to divide the value in Joule it by a factor of (3600 [s] s * 15 [min])?min) = 54000?

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly'

I'm running some simulations by asking EnergyPlus (through the IDF) to output the Output:Meter,Electricity:HVAC (an output meter; it meter which measures the electric energy consumption in Joule.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 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 s * 15 min) = 54000?

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly'

I'm running some simulations by asking EnergyPlus (through the IDF) to output the 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 s * 15 min) = 54000?

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly'

I'm running some simulations by asking EnergyPlus (through the IDF) to output the 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' '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 s * 15 min) = 54000?

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly'

I'm running some simulations by asking EnergyPlus (through the IDF) to output the 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 s * 15 min) = 54000?

Convert Joule to Wh, when 'Reporting Frequency' is different from 'Hourly'

I'm running some simulations by asking EnergyPlus (through the IDF) to output the 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 s * 15 min) = 54000?3600 (obtaining W-15 minutes), and then multiply it by 4, to finaly 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 EnergyPlus (through the IDF) to output the 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 (obtaining W-15 minutes), and then multiply divide it by 4, to finaly 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 EnergyPlus (through the IDF) to output the 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 (obtaining W-15 minutes), and then divide it by 4, 4 (n°timesteps per hour) , to finaly 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 EnergyPlus (through the IDF) to output the 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 (obtaining W-15 minutes), and then divide it by 4 (n°timesteps per hour) , hour), to finaly 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 EnergyPlus (through the IDF) to output the 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 (obtaining W-15 minutes), and then divide it by 4 (n°timesteps per hour), to finaly 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 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 (obtaining W-15 minutes), 3600, and then divide it by 4 (n°timesteps 4 (n°timesteps per hour), to finaly 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 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?