[Equest-users] Water Loop Heat Pumps

Karen Walkerman kwalkerman at gmail.com
Wed Jul 1 11:37:39 PDT 2009

Where does the heat come from if the water to air heat pumps need to heat?

What do you mean by: "I set the boiler to 0 capacity, but the results for
heating seem a little low"???  What seems low?  Energy use?  Indoor
temperatures?  Out of range hours?


On Wed, Jul 1, 2009 at 12:29 PM, Grando, John <JGrando at cosentini.com> wrote:

>  Hello all:
> I am modeling an HVAC system that uses condenser water from a tower for
> cooling and heating.  When I choose this system in the Wizard it makes a
> water loop heat pump loop.  The design does not include a boiler, but a
> boiler is needed for this system.  I set the boiler to 0 capacity, but the
> results for heating seem a little low. I've tried connecting my system to a
> condenser water loop with just a cooling tower, but it does not use the
> condenser water at any time during the year if I have water-to-air heat pump
> for heating and cooling.  Does anyone have any suggestions?
> *John Grando** **LEED AP**| **Mechanical Engineer
> *Phone: 212-615-3705 | Fax: 212-615-3700
> jgrando at cosentini.com
> *Cosentini Associates - A Tetra Tech Company
> *Two Pennsylvania Plaza - Third Floor - New York, NY 10121
> *www.cosentini.com* <http://www.cosentini.com/>
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