[Equest-users] Water cooled condensor and heating system

[Neil Bulger]

If you have a model that is working with an air cooled condenser and you
would like to switch the condenser to be water cooled for your ASHRAE 90.1
App G, first create a condenser water loop (it will be green) and THEN
change the condenser of the chiller. eQuest wants you to do things in a
specific order.

Your heating is likely 0 because you need to specify a supply air
temperature for heating. Depending on the air-system you have selected, you
need to input an upper supply air temperature setpoint (like 105 F) and a
reheat temperature range, like 40 F. If you do not specify a temperature
range, zone-level heating elements will not be sized on simulation and
therefore, not turn on, resulting in no-heating.

Cheers,

-- 

*Neil Bulger*
Project Engineer****

*________________________________*****

I N T E G R A L****

*                         ** **GROUP*****

** **

427 13th Street, Oakland CA 94612
510 663 2070 x 235
nbulger at integralgroup.com
www.integralgroup.com****

*DEEP GREEN Engineering.*

*________________________________*
*
*

On Tue, Nov 20, 2012 at 5:41 AM, Ashraf Ali Khan <p.ashraf at aesg-me.com>wrote:

> My project is designed with two Air cooled screw chiller and there is no
> heating system.****
>
> **1.       **Water cooled chiller error****
>
> As per ASHRAE App G, my project should be modeled with Water cooled
> chiller in baseline. So when I am trying to change the condenser type as
> Water cooled in Baseline model, a tab is being popup to enter “Required
> chiller data for chiller” as attached. Please let me know how can I assign
> water loop and when I am trying to resolve it by selecting some defaults,
> chiller is being deleted. ****
>
> (I tried another model changing Water cooled condenser system to Air
> cooled condenser same error popup)****
>
> ** **
>
> **2.       **No Heating load in the report:-****
>
> The project heating type should be Electric Resistance and should be kept
> identical in both the cases as my proposed building does not have heating.
> ****
>
> As I haven’t seen Electric resistance option, so I have selected Electric
> as Heating source. Unfortunately my results indicate Space Heat as Zero
> Electric Consumption. This is not acceptable by LEED.****
>
> ** **
>
> Please help me to model Water cooled condenser and space heating.****
>
> Many Thanks****
>
> Regards,****
>
> Ashraf****
>
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