I do see the new inputs in the AirConditioner:VariableRefrigerantFlow object.
It looks like I missed changing one of the field descriptions.
The valid choices are now Yes and No.
Field: Heat Pump Waste
Heat
Recovery
This
choice field
defines the configuration of the heat pump refrigeration system.
This field is
reserved for future use. The only valid choice is No.
I also see new inputs in the ZoneHVAC:TerminalUnit:VariableRefrigerantFlow, specifically Rated Total Heating Capacity Sizing Ratio and Availability Manager List Name.
The Engineering Reference also shows updates for the new input fields (at the bottom of the AirConditioner:VariableRefrigerantFlow object).
So it looks to me like the documentation was updated.
Both the VRF features are not updated in I/O Reference guide though it reflects in actual IDF. This correction might be important for those who has not seen release notes for current version.
On Mon, Oct 15, 2012 at 11:42 AM, Niraj Poudel <nirajpdl@xxxxxxxxx> wrote:
Thank you for all that you guys are doing. Much appreciated!!
--
On Mon, Oct 15, 2012 at 12:44 PM, Jim Dirkes <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Thanks, EnergyPlus team!
I am particularly pleased to see that heat recovery VRF is now available!
James V Dirkes II, PE, BEMP, LEED AP
www.buildingperformanceteam.com
Energy Analysis, Commissioning & Training Services
1631 Acacia Drive, Grand Rapids, MI 49504 USA
616 450 8653
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Linda Lawrie
Sent: Monday, October 15, 2012 12:55 PM
Subject: [EnergyPlus_Support] EnergyPlus V7.2 Released
EnergyPlus Version 7.2 and OpenStudio Legacy Plug-in 1.0.9 Available
The U.S. Department of Energy (DOE) has released an updated version of EnergyPlus simulation software for modeling heating, cooling, lighting, ventilating, and other building energy flows. Additionally, a new version of OpenStudio Legacy Plug-in for Trimble SketchUp is available, which makes it possible to perform EnergyPlus simulations using Sketchup's user-friendly 3-D drawing interface.
Visit www.energyplus.gov to learn more and download EnergyPlus and OpenStudio Plug-in now.
Highlights of this release (V7.2.0.006)
** The highlights – improved and new features – are displayed by category.
General
* Speed improvements and many bug fixes throughout.
Datasets
* WindowConstructs.idf was revised so annotations properly reflect U, SHGC, TSOL, TVIS values in EnergyPlus
* FluidPropertiesRefData.idf was revised remove unused superheated specific heat objects. Data sources documented.
Input
* Corrected or clarified the units for various input fields
* Windows and Daylighting
* New detailed model for complex window systems with Bi-directional Scattering Distribution Functions (BSDF).
Zone and Surface Models
* Multiple surface heat transfer algorithms (CTF, CondFD, EMPD, HAMT) can now be used in a single simulation and selected for individual surfaces and constructions.
* Changed model coefficients for the default outside face surface convection heat transfer correlations called "DOE-2" and "MoWiTT."
HVAC and Refrigeration
* Expanded model for Variable Refrigerant Flow (VRF) to allow simultaneous heating and cooling (heat recovery) and water-cooled condensers.
* New detailed models for variable-speed DX cooling and heating coils.
* Zone sizing expanded to add method for the design supply air temperature to be based on differences with zone temperature.
* Detailed ice storage model expanded for inside melt systems to start charging from a bare coil.
* HVAC equipment standard rating calculations (Net capacity, SEER, IEER) expanded for multispeed DX coils, multi-speed heat pumps, and packaged variable air volume units.
* Improved warning message content when HVAC simulation maximum iterations limit is exceeded.
* Added option for non-coincident sizing in HVACTemplate system objects.
* Added options for humidity setpoints and desuperheater in HVACTemplate for dedicated outdoor air systems.
* Added options for supply air temperatures in HVACTemplate for zone sizing.
* Added options for supplementary heating coil to be hot water in HVACTemplates for heatpump and unitary equipment.
* Added options for substituting specific chiller, boiler, and cooling tower objects for the defaults normally generated by HVACTemplates.
Controls and User Functions
* System availability managers expanded to control operation of additional types of zone equipment including: fan coil units, zone energy recovery ventilators, zone outdoor air units, variable refrigerant flow terminals, and ventilated slabs.
* Availability schedule added to daylighting controls.
Output
* Error messages improved for recurring errors.
* Tabular reports improved formatting and clean up.
* Documentation and Guides
* Documentation has been updated for all documents.
Platforms
* Windows (XP, Vista, Windows 7) 32 and 64 bit versions
* Linux (Ubuntu 12.04 and compatible) 32 and 64 bit versions
* Mac (10.6, 10.7 and 10.8) 32 and 64 bit versions
* EnergyPlus V 7.2 has been tested on all of these platforms
And many other enhancements and speed improvements throughout.
Suggestion: get as much memory as possible in your computer for
running EnergyPlus.
Thanks!
The EnergyPlus Team
Niraj Poudel, Architectural Engineer.PhD student, PDBE Program.Clemson University, Clemson, SC.
--
Javed Iqbal, LEED AP, CEAEnergy Analyst
-- Richard A. Raustad Senior Research Engineer Florida Solar Energy Center University of Central Florida 1679 Clearlake Road Cocoa, FL 32922-5703 Phone: (321) 638-1454 Fax: (321) 638-1439 or 1010 Visit our web site at: http://www.fsec.ucf.edu UCF - From Promise to Prominence: Celebrating 40 Years
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