[Bldg-sim] water-to-water heat pump system

[Ali Nazari]

To reflect the effect of the boiler and the fluid cooler that are attached to the heat pump loop and also considering the heat pump COP and EER (in heating and cooling modes), I modeled the water to water heat pump system as a distributed heat pump system. In this case the efficiency of the distributed heat pumps were adjusted based on the efficiencies of water to water heat pumps.

The boiler and fluid cooler were used to maintained the heat pump loop temperature at the desired condition (i.e. 70F and 90F in heating and cooling mode).


Ali Nazari M.A.Sc.
Mechanical Engineer

MCW Consultants Ltd. <http://www.mcw.com/>
1400-1185 West Georgia St.
Vancouver, BC V6E 4E6
Phone 604-687-1821 Ext. 131
Fax 604-683-5681

This e-mail may be privileged and confidential. Any unauthorized use is strictly prohibited. If you received this e-mail in error, please contact the sender directly.



________________________________
From: Todd Lagus [mailto:TLagus at Sebesta.com]
Sent: Thursday, April 24, 2008 3:14 PM
To: Ali Nazari; bldg-sim at lists.onebuilding.org
Subject: RE: [Bldg-sim] water-to-water heat pump system

Hello Ali,

I'm in a similar situation.  I haven't really thought it through yet, but I was thinking about just finding an equivalent boiler efficiency.  Not really convenient, but I will probably have to resort to that.

What options have you considered?

Todd Lagus
Mechanical Engineer
Sebesta Blomberg
2381 Rosegate
Roseville, MN 55113
Phone: 651-634-7236
Fax: 651-634-7400
www.sebesta.com<http://www.sebesta.com>

This message has been sent via the Internet. Internet communications are not secure against interception or modification. Sebesta Blomberg therefore cannot guarantee that this message has not been modified in transit. This message and any files transmitted with it are confidential and intended solely for the use of the addressee. If you have received this message in error, please notify the sender and destroy your copies of the message and any attached files.
________________________________
From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Ali Nazari
Sent: Thursday, April 24, 2008 5:05 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] water-to-water heat pump system

Greetings,

I am modeling a water-to-water heat pump system with eQUEST. I understand it is not possible to model hybrid systems like this with eQUEST. I was wondering if anyone has come up with a work around for this?

Thanks,


Ali Nazari M.A.Sc.
Mechanical Engineer

MCW Consultants Ltd. <http://www.mcw.com/>
1400-1185 West Georgia St.
Vancouver, BC V6E 4E6
Phone 604-687-1821 Ext. 131
Fax 604-683-5681

This e-mail may be privileged and confidential. Any unauthorized use is strictly prohibited. If you received this e-mail in error, please contact the sender directly.



________________________________
If this email is spam, report it here:
http://www.OnlyMyEmail.com/ReportSpam<http://www.onlymyemail.com/view/?action=reportSpam&Id=NzQ3NjI6NjE0NzYzMzYxOnRsYWd1c0BzZWJlc3RhLmNvbQ%3D%3D>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20080429/3ae9ce33/attachment-0002.htm>