Re: [EnergyPlus_Support] CentralChillerHeaterSystem

To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>

Subject: Re: [EnergyPlus_Support] CentralChillerHeaterSystem

From: "Julien MARREC julien.marrec@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>

Date: Mon, 31 Jul 2017 23:18:00 +0200

Authentication-results: mta1005.groups.mail.bf1.yahoo.com from=gmail.com; domainkeys=neutral (no sig); from=gmail.com; dkim=pass (ok)

Authentication-results: mx30.antispamcloud.com; dmarc=pass header.from=yahoogroups.com

Authentication-results: antispamcloud.com; spf=pass smtp.mailfrom=sentto-3387488-37568-1501535886-linda=fortlawrie.com@xxxxxxxxxxxxxxxxxxxxxxxx; dkim=pass header.i=yahoogroups.com

Delivered-to: linda@xxxxxxxxxxxxxx

Delivered-to: mailing list EnergyPlus_Support@xxxxxxxxxxxxxxx

Delivery-date: Mon, 31 Jul 2017 15:18:24 -0600

Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoogroups.com; s=echoe; t=1501535886; bh=VZ8nudt3FbanD7S2pVCXxO5eNmhM3BLAEgsGFJon6G0=; h=References:In-Reply-To:To:From:List-Id:List-Unsubscribe:Date:Subject:Reply-To:From:Subject; b=JLOL1MWVMTKTK9/th+u3H2wfDJViP4PNj5Pzhy1K8MaMAOZ+rMX9ZOpnpX0/Df8PJPhEszksb88XhG72GyuSGA98Fe7qzPGZ/i4zCFWfb8OBeOrCfWvkD4+/N1VO59roC4NvAIbtjDZoJTSM9E/teOWmE9Kk0T3qi8g/nfW4Y7Y=

Envelope-to: linda@xxxxxxxxxxxxxx

In-reply-to: <ojiu97+17o51ok@YahooGroups.com>

List-id: <EnergyPlus_Support.yahoogroups.com>

List-unsubscribe: <mailto:EnergyPlus_Support-unsubscribe@yahoogroups.com>

Mailing-list: list EnergyPlus_Support@xxxxxxxxxxxxxxx; contact EnergyPlus_Support-owner@xxxxxxxxxxxxxxx

References: <ojiu97+17o51ok@YahooGroups.com>

Reply-to: EnergyPlus_Support@xxxxxxxxxxxxxxx

Sender: EnergyPlus_Support@xxxxxxxxxxxxxxx

Francesco,

I can't check the file (on a phone) but you need to remember this object is connected to three loops: heating and cooling (on supply side typically), and a source loop (ground or other condenser loop typcally on the demand side).

Make sure you're looking at the right nodes. It may be that you're looking at the cooling nodes which would explain why they have the same temperature but there's a heating rate.

Best,

Julien

Envoyé de mon iPhone

Le 5 juil. 2017 à 16:49, "fpasserini.tn@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> a écrit :

I’m considering the example file CentralChillerHeaterSystem_Cooling_Heating.idf (available in C:\EnergyPlusV8-7-0\ExampleFiles)
It models a CentralHeatPumpSystem
As you can see in the attached excel file, the BIG CHILLER INLET NODE temperature and the BIG CHILLER OUTLET NODE temperature are the same. Nevertheless, the “Chiller Heater System Cooling Rate” is not 0. I would expect
(outlet temperature - inlet temperature) * dm/dt * c = W
Am I misunderstanding something?
Moreover, I would expect that there is some relationships among the following output:
-          Ground Heat Exchanger Heat Transfer Rate
-          Plant Supply Side Cooling Demand Rate, CHILLED WATER CONDENSER LOOP
-          Plant Supply Side Heating Demand Rate, CHILLED WATER CONDENSER LOOP
But if I consider the output data I’m not able to find the relationship.
Best Regards

Francesco

<CentralChillerHeaterSystem_Cooling_Heating.xlsx>

__._,_.___

Posted by: Julien MARREC <julien.marrec@xxxxxxxxx>

EnergyPlus support is found at: http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx The EnergyPlus web site is found at: http://www.energyplus.net/ The group web site is: http://groups.yahoo.com/group/EnergyPlus_Support/ Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files. EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.

Visit Your Group

New Members 5

• Privacy • Unsubscribe • Terms of Use

__,_._,___