[Equest-users] eQuest Users - hydronic question

Daniel Deese Daniel.Deese at crbusa.com
Thu May 27 12:57:08 PDT 2010



            Be sure to check your Heat Input Ratios (HIR) and your Electric Input Ratios (EIR).  For a chiller, if your COP is 5.0, your EIR would be 0.2.  For a boiler, if your efficiency is 80%, then your HIR is 1.25.  If I'm wrong, someone correct me, but I had a huge heat rejection load one time only to find out that my EIR for the chiller was 1.2, instead of 0.2.  thanks.




Daniel I. Deese, EI| CRB Consulting Engineers | 

1255 Crescent Green, Suite 350 | Cary, NC 27518 | 

P: 919-852-5443 | F: 919-852-5454 | X: 4543

Email: daniel.deese at crbusa.com <mailto:daniel.deese at crbusa.com>  



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From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Tomlinson, Scott
Sent: Thursday, May 27, 2010 1:05 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] eQuest Users - hydronic question


Dear eQuesters,


Whenever I try to add equipment capacities to anything hydronic, be it a boiler, chiller, or anything else, my energy consumption goes absolutely crazy.  Is anyone else experiencing this?


-          Thank you,



Scott Tomlinson, PE, LEED-AP


Symmes Maini & McKee Associates, Inc.

1000 Massachusetts Avenue, Cambridge, MA 02138

t: 617.520.9438



f: 617.354.5758

stomlinson at smma.com

www.smma.com <http://www.smma.com/> 



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