I cannot advice you without looking at your input to the EPlus, the IDF file.
When you declare the use of a thermostat, you need to input the type, the zone, and the schedule. In the schedule you need to state for which day type and for which day range.
For example, if your schecule is set for weekdays, and your run period is on a different day, such as design day, etc. then your schedule will not be executed..
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: adityaravi87@xxxxxxxxx
Date: Thu, 9 Jun 2011 20:23:29 +0000
Subject: [EnergyPlus_Support] Re: Frist Time User - doubts in scheduling
May be I need to read the input requirements again throughly. By HVAC ON, thought, depending on the requirement, the modes between heating and cooling would change automatically. Guess I was wrong. Like you have suggested I will need to selectively control them.
Also say if I am working only for cooling, i.e. only Summer, what I want to do is, keep the HVAC ON for the entire day and keep different cooling set points for different times of the day, where during the unoccupied period there will be a setback, say I increase it to 40deg C, which I assume means the HVAC will not KICK ON until the zone temperature reaches 40deg C. So now for this configuration what I noticed is, even though the HVAC cools the room to a set point say 22, it continues to consume energy(remains ON) and keeps the room at 22. Why does the HVAC not cut off on reaching a set point. Is it because of the Heat Balance Algorithm used by E+?
Regards,
Aditya
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, YuanLu Li <yli006@...> wrote:
>
>
> I would suggest that you work through the example in the Getting started first before trying to write the IDF on your one.
>
> A one zone house does not simplify the IDF entry very much.
>
> Run the PTAC example file in the exampleFiles folder. Then change the building geometry to your design, and location to where you are. Yhere is spread sheet index there to help you find what you want.
>
> Computer entries are very exact, and can not be randomly inserted, without following all the necessary linking objects.
>
> For example, is your thermostat declared correctly with control type, zone and shedule names. Is you schedule orrectly spepifyin the uear or season or week or day, and time?
>
> If you have Winter and Sommer, the HVAC has cooling and heating functions. HVAC on constantly does not make sense. The heiting and cooling components must be selectively controlled for the two seasons or for two working temperature bands.
>
> If you do not following what I am describing, you have not read sufficiently into the EPlus input requirements.
>
> Dr. Li
>
>
>
>
>
>
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> From: adityaravi87@...
> Date: Wed, 8 Jun 2011 15:24:27 -0700
> Subject: [EnergyPlus_Support] Frist Time User - doubts in scheduling
>
>
>
>
>
>
> Hello,
>
> I am starting to learn this software. I have a few doubts.
>
> Firstly, the SIZING:PERIOD, where we need to define a winter or summer design day. Can anyone explain what this means and how it affects the simulation.
>
> Two: I have created two set point schedules which the HVAC must follow. One is for WINTER and the OTHER for SUMMER. However I am using only a single
__._,_.___
Also say if I am working only for cooling, i.e. only Summer, what I want to do is, keep the HVAC ON for the entire day and keep different cooling set points for different times of the day, where during the unoccupied period there will be a setback, say I increase it to 40deg C, which I assume means the HVAC will not KICK ON until the zone temperature reaches 40deg C. So now for this configuration what I noticed is, even though the HVAC cools the room to a set point say 22, it continues to consume energy(remains ON) and keeps the room at 22. Why does the HVAC not cut off on reaching a set point. Is it because of the Heat Balance Algorithm used by E+?
Regards,
Aditya
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, YuanLu Li <yli006@...> wrote:
>
>
> I would suggest that you work through the example in the Getting started first before trying to write the IDF on your one.
>
> A one zone house does not simplify the IDF entry very much.
>
> Run the PTAC example file in the exampleFiles folder. Then change the building geometry to your design, and location to where you are. Yhere is spread sheet index there to help you find what you want.
>
> Computer entries are very exact, and can not be randomly inserted, without following all the necessary linking objects.
>
> For example, is your thermostat declared correctly with control type, zone and shedule names. Is you schedule orrectly spepifyin the uear or season or week or day, and time?
>
> If you have Winter and Sommer, the HVAC has cooling and heating functions. HVAC on constantly does not make sense. The heiting and cooling components must be selectively controlled for the two seasons or for two working temperature bands.
>
> If you do not following what I am describing, you have not read sufficiently into the EPlus input requirements.
>
> Dr. Li
>
>
>
>
>
>
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> From: adityaravi87@...
> Date: Wed, 8 Jun 2011 15:24:27 -0700
> Subject: [EnergyPlus_Support] Frist Time User - doubts in scheduling
>
>
>
>
>
>
> Hello,
>
> I am starting to learn this software. I have a few doubts.
>
> Firstly, the SIZING:PERIOD, where we need to define a winter or summer design day. Can anyone explain what this means and how it affects the simulation.
>
> Two: I have created two set point schedules which the HVAC must follow. One is for WINTER and the OTHER for SUMMER. However I am using only a single
__._,_.___
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