Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
I've modeled this before using OpenStudio. OpenStudio 1.5 or later offers a lot of flexibility by allowing direct or indirect evaporative coolers to be placed on the outdoor air exhaust/supply nodes. One option would be to place an indirect evaporative cooler on the supply node along with a HX coupling the exhaust and supply air streams. Another option would be to place the direct evaporative cooler on the exhaust stream with a sensible HX.
If you want to model a direct/indirect evaporative cooling system you could place a direct evaporative cooler on both air streams and couple the streams with a sensible HX. There is a measure that automates this available through the BCL.
| | 2 | No.2 Revision |
I've modeled this before using OpenStudio. OpenStudio 1.5 or later offers a lot of flexibility by allowing direct or indirect evaporative coolers to be placed on the outdoor air exhaust/supply nodes. One option would be to place an indirect evaporative cooler on the supply node along with a HX coupling the exhaust and supply air streams. Another option would be to place the direct evaporative cooler on the exhaust stream with a sensible HX.
If you want to model a direct/indirect evaporative cooling system you could place a direct evaporative cooler on both air streams and couple the streams with a sensible HX. There is a measure that automates this available through the BCL.
For the indirect/direct evaporative cooling objects you can specify sensible and latent effectiveness's respectively. For the air to air HX you can specify both a sensible and latent effectiveness's at various airflow rates for heating and cooling.
| | 3 | No.3 Revision |
I've modeled this before using OpenStudio. OpenStudio 1.5 or later offers a lot of flexibility by allowing direct or indirect evaporative coolers to be placed on the outdoor air exhaust/supply nodes. One option would be to place an indirect evaporative cooler on the supply node along with a HX coupling the exhaust and supply air streams. Another option would be to place the direct evaporative cooler on the exhaust stream with a sensible HX.
If you want to model a direct/indirect evaporative cooling system you could place a direct evaporative cooler on both air streams and couple the streams with a sensible HX. There is a measure that automates this available through the BCL.
For the indirect/direct evaporative cooling objects you can specify sensible and latent effectiveness's respectively. For the air to air HX you can specify both a sensible and latent effectiveness's effectiveness at various airflow rates for heating and cooling.
