RE: [EnergyPlus_Support] Warning in VRV modeling

If you want to change the expIDF file, you should do it for one zone and watch the result.

It is waste of time to change all 22 zones and do not know why. Run your template version again and note all the flowrates. In your country cooling is priority 1. Heating is optional.

It will be easier to change the values in the template, rather then in the expIDF.

Run cooling only and see whether you need any heating.

The error message below simply says that heating is not required.

The error message on the attached IDF were on some other problems. Specifying heating flow fate, when heating is not required is one of them.

Heating priority was set to 1, etc. should also be checked, as cooling is more important in your location.

DesignBuider has given you a beautiful building. But you did not display any zone temperture related output variables. Only one variable was requested.
Output:Variable,*,Zone Terminal Unit Total Cooling Rate ,Timestep;

You need to learn how to debug software, in order to go further.

I did not get the following error, because the file you have attached have other problems.

Dr. Li

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: eee.javed@xxxxxxxxx
Date: Sat, 14 Apr 2012 06:31:48 -0700
Subject: [EnergyPlus_Support] Warning in VRV modeling

Hi,

I am modeling VRV system for proposed case and getting following error on almost all Outdoor Unit. I tried with Increase and decrease in Temp but it didn't work. Kindly Guide me on this. Please find attached file for the same.

** Warning ** AirConditioner:VariableRefrigerantFlow "VRF HEAT PUMP (18+18+10HP)".

** ~~~ ** ...InitVRF: VRF Heat Pump Min/Max Outdoor Temperature in Heating Mode Limits have been exceeded and VRF system is disabled.

** ~~~ ** ... Outdoor Dry-Bulb Temperature = 18.395

** ~~~ ** ... Heating Minimum Outdoor Dry-Bulb Temperature = -20.000

** ~~~ ** ... Heating Maximum Outdoor Dry-Bulb Temperature = 17.000

** ~~~ ** ... Check VRF Heat Pump Min/Max Outdoor Temperature in Heating Mode limits.

** ~~~ ** During Warmup, Environment=PUNE ANN CLG 1% CONDNS WB=>MDB, at Simulation time=05/21 00:00 - 00:15

Thanks!

Javed Iqbal, LEED AP, CEA

Energy Analyst

__._,_.___

Primary EnergyPlus support is found at: http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx The primary EnergyPlus web site is found at: http://www.energyplus.gov 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.

Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___