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

do i need to put a design days for investigation on energy performance in the natural ventilated house

asked 2018-09-14 10:58:35 -0500

santy gravatar image

updated 2018-09-16 06:36:25 -0500

Avi gravatar image

i have a research on the investigation on the energy performance in a naturally ventilated house in Indonesia. i used the energyplus software for the energy simulation My questions is : do i need to put a design days for investigation on energy performance in this natural ventilated house?

as i know that the design days is important for use in HVAC Sizing calculations .

edit retag flag offensive close merge delete


Please add a tag for the software you are using, e.g., 'energyplus'.

__AmirRoth__ gravatar image __AmirRoth__  ( 2018-09-14 15:47:42 -0500 )edit

1 Answer

Sort by » oldest newest most voted

answered 2018-09-16 06:39:41 -0500

Avi gravatar image

If you check the Input Output Reference you will find that:

The design day input describes the parameters to effect a “design day” simulation, often used for load calculations or sizing equipment. Using the values in these fields, EnergyPlus “creates” a complete days’ worth of weather data (air temperatures, solar radiation, etc.) Normal operation uses the default range multipliers as shown in Figure though users may choose to input their own multiplier schedule. Likewise, normal operation specifies one “humidity indicating condition” which is used to calculate the humidity ratio at maximum temperature – this is used as the constant humidity ratio for the entire day. Again, this can be overridden by specifying a relative humidity schedule or requesting generation of an hourly wet-bulb temperature profile. Multiple design days may be specified.

From there since I assume you don't need any sizing (at least for HVAC system) you don't need design days.

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


Question Tools

1 follower


Asked: 2018-09-14 10:58:35 -0500

Seen: 79 times

Last updated: Sep 16 '18