Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
0

Simple constant mech ventilation

asked 2025-03-05 16:06:38 -0500

A.Pressler's avatar

updated 2025-03-06 08:52:13 -0500

Hey, which energyplus object do I need for a simple mechanical ventilation in a zone with a fixed volume flow and a fixed supply temperature that’s not trying to meet any loads? Also no outdoor air is needed…

edit retag flag offensive close merge delete

Comments

I was going to say ZoneVentilation:DesignFlowRate until I read "fixed supply temperature". I'm really curious what real life system do you have that provides a fixed flow + fixed temperature that isn't outdoor air?

Julien Marrec's avatar Julien Marrec  ( 2025-03-06 07:14:40 -0500 )edit

I would say you could use an internal load, say a OtherEquipment that would represent the load by converting that fixed volume flow rate at temperature to watts (+ maybe an ElectricEquipment to model the fan portion if you want to).

Julien Marrec's avatar Julien Marrec  ( 2025-03-06 07:18:39 -0500 )edit

1 Answer

Sort by » oldest newest most voted
0

answered 2025-03-08 00:34:14 -0500

A.Pressler's avatar

The real life system is indeed an outdoor air system, I just thought it would make things easier as I don’t need to calculate energy demand in the system itself or anything outdoor air related. I just want to model the room temperature in the summer under these fixed conditions. I have now used the ideal loads system with a really low cooling setpoint so that the system is always in maximum cooling mode with the desired supply temperature specified as minimum cooling temperature and the desired flow rate set as maximum cooling flow rate and limited flow rate setting. It works but somehow this feels like a workaround (probably because it is 😄).

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Training Workshops

Careers

Question Tools

1 follower

Stats

Asked: 2025-03-05 16:06:38 -0500

Seen: 98 times

Last updated: Mar 08