Dear Vinay,
·
A simple way to fix this is to assign an availability schedule to
the cooling coil which is ON only during warmer months. For the coil
below, I’ve used an “AlwaysOn” schedule, but you can create
any schedule that you like, perhaps similar to the one I show at the bottom.
The Building Performance Team
James V. Dirkes II, P.E., LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Vinay
Devanathan
Sent: Thursday, July 08, 2010 8:24 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] DX Cooling Coil warning
Hello All,
How do I control a Dx:CoolingCoil from operating when the inlet air temperature
required no cooling. In my case,
Full load outlet air dry-bulb temperature < 2C. This indicates the
possibility of coil frost/freeze. Outlet temperature = 1.90 C.
** ~~~ ** ...Occurrence info = RUN
PERIOD, 01/16 11:24 - 11:26
** ~~~ ** ... Possible reasons for low
outlet air dry-bulb temperatures are: This DX coil
** ~~~ ** 1) may have a
low inlet air dry-bulb temperature. Inlet air temperature = 16.946 C.
** ~~~ ** 2) may have a
low air flow rate per watt of cooling capacity. Check inputs.
** ~~~ ** 3) is used as
part of a HX assisted cooling coil which uses a high sensible effectiveness.
Check inputs.
this is what happens..
I have a Setpoint Manager (Mixed Air) for the cooling coil outlet node. The
reference setpoint for this is through Setpoint manager:Singlezone:Reheat.
Could anyone please tell me what is wrong with this?
Thank you very much.
Regards,
Vinay
__._,_.___
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe
__,_._,___