Hi,
I was trying to work out how to investigate the impacts of single sided natural ventilation of a space through an opening. It seems to me that energy plus can only investigate cross flow ventilation even though energyplus can model bi-directional flow through a single opening. It appears to me that it requires two openings in all cases.
I am also wondering if I can then model two openings (one at high level, one at low level) on the same facade.
Can anyone help me understand the capabilities of energyplus for single sided natural ventilation?
Thanks in advance.
Ross
Ross,
Sorry I can't be of more help than pointing down a couple of avenues
that you may have already ventured. But here goes:
It is worth searching the archives, then posting a message to the yahoo
support group:
http://tech.groups.yahoo.com/group/EnergyPlus_Support/
Many of the DOE team are on there regularly - more so than this mailing
list. *hushed voice* they all seem to be overly obsessed with Equest on
here...
Also, you could try investigating the example files with names
containing *airflow*.idf in the .\Eplus\ExampleFiles directory. There is
an excel file in the same directory that gives you an overview of the
various models.
Setting up E+ for natural ventilation appears a little tricky to me.
I've never done it apart from using the Designbuilder interface and
cannot comment on bi-directional flow at present.
Thanks
Chris Yates
All,
I am curious to know what programs/methodologies people have used to
effectively model the following types of energy recovery systems:
1.) Dual Wheel Heat Recovery with a Cooling Coil between the wheels.
This system is similar to the SEMCO Pinnacle system. As the outdoor air
travels through the air handler it passes first through a total energy
wheel, then through a cooling coil and then through a passive
dehumidification wheel. The exhaust air, as it leaves the building,
travels through the passive dehumidification wheel and then the total
energy wheel.
2.) Twice through Heat Recovery with a Cooling Coil in between the
first and second pass. This system is similar to a DesertAire system.
The outside air passes through the heat recovery device, through a
cooling coil, and then through the other side of the same heat recovery
device thus pre-cooling the outdoor air and reheating the supply air.
Please see the attached PDF for very simple schematic sketches of each
option.
Thanks,
Adam