[Equest-users] eQUEST: Heat Recovery Chiller

Tony Kriel TKriel at sustaineng.com
Tue Oct 6 06:33:44 PDT 2009


If I were to setup another heat recovery chiller I would use the following steps.  If anyone would like to add some comments or some additional steps, please feel free to do so.
1.       Assumptions: You're in detailed mode, and you have a water cooled chiller setup with a chilled water loop, condenser water loop, and a hot water loop.
2.       Create a new chiller. Type = Elec Heat Recovery
3.       Assign loops. CHW = Chilled Water Loop, CW = Condenser Water Loop, HtRec = Hot Water Loop.
4.       Verify/input the EIR, equipment capacity, whether the chiller is at Design or Rated conditions.
5.       Change the chilled water temperature, condenser temperature, min condenser temperature, and maximum het recovery setpoints if necessary.
6.       Create/change EIR and Capacity curves if necessary.

Regards,



Tony Kriel

________________________________
From: Otto Schwieterman [mailto:oschwieterman at fhai.com]
Sent: Tuesday, October 06, 2009 8:17 AM
To: Tony Kriel; equest-users at lists.onebuilding.org.
Subject: eQUEST: Heat Recovery Chiller


Tony, have you figured out or received a step-by-step process for simulating a heat recovery system?



Thanks, Otto



______________________________________________________________________________



Tony-



When you define a chiller in eQuest, along with assigning the appropriate

CHW (and possibly CW and HW) there is also a loop assignment for "HtRec".

This takes either a HW, WLHP, or DHW Loop to which the chiller will attempt

to provide recovered heat to.  There are some variables you will need to

fill in depending on how much heat you want to recover, etc...



If that doesn't answer your question, please let me know.



Regards,



--

Steve Mignogna

Atelier Ten







On Mon, Mar 9, 2009 at 4:55 PM, Tony Kriel <tkriel at sustaineng.com<http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org>> wrote:



>  I know this has been asked once or twice before, but I haven't had too

> much luck finding an appropriate archived response.

>

>

>

> Has anyone successfully modeled a heat recovery chiller in Equest that

> would reject heat to a domestic hot water loop and would like to share a

> step by step process for simulating such a system?

>

>

>

> Thanks,

>

>

>

> Tony Kriel, LEED AP

>

> Mechanical Engineer

>

> tkriel at sustaineng.com<http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org>

>

> (608) 231-9664 ext. 16

>

>

>

> Sustainable Engineering Group, LLC.

>

> 431 Charmany Drive, Suite 102

>

> Madison, WI 53719

>

> www.sustaineng.com




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