HVAC Simulation Enables Equipment Optimization. With HVAC simulation software, you can predict the performance of rotating machinery like industrial fans, vents, compressors, pumps or blowers. In addition, CAE helps to minimize pressure drops across ducts and other components. SimScale can also be used to optimize heating equipment. DELMAR ONLINE TRAINING SIMULATION: HVAC, is a 3-D, immersive simulation that offers a rich learning experience that mimics field performance. It challenges the user to master diagnostic and troubleshooting skills across six pieces of HVAC equipment found in industry- Gas Furnace, Oil Furnace, Gas Boiler, Small Commercial Air Conditioner, Central Air Conditioners and Heat Pump. The leading HVAC Troubleshooting Simulator allows you to practice over 150 faults on 6 different pieces of equipment. It is made for students as well as for.
Thank you for visiting DOE2.com. This site is the place where you can obtain information and products from the developers of DOE-2 and DOE-2 based products including eQUEST. This site is maintained by James J. Hirsch & Associates.
The DOE-2 software was developed by James J. Hirsch & Associates (JJH) in collaboration with Lawrence Berkeley National Laboratory (LBNL), with LBNL DOE-2 work performed mostly under funding from the United States Department of Energy (USDOE) and other work performed mostly under funding from a wide range of industry organizations and ourselves. This site, however, is not sponsored or endorsed by either USDOE or LBNL, and use of “DOE” in names in this site does not imply any endorsement or recommendation of any listed products or services by the United States Government, LBNL, or anyone else.
Follow this links to review a brief comparison of DOE-2.1E, DOE-2.2, eQUEST and PowerDOE. eQUEST is our most up-to-date complete building energy use simulation tool; it is free and contains a complete version DOE-2.2 and its documentation.
Note: Most documents posted on this website are published using Adobe's Portable Document Format (PDF) with most using PDF version 1.5 (created using Acrobat version 9) and may not be readable with versions prior to 6; to update your Acrobat Reader go to the Adobe site for a free download.
eQUEST® is a sophisticated, yet easy to use, freeware building energy use analysis tool that provides professional-level results with an affordable level of effort. eQUEST was designed to allow you to perform detailed comparative analysis of building designs and technologies by applying sophisticated building energy use simulation techniques but without requiring extensive experience in the 'art' of building performance modeling. This is accomplished by combining schematic and design development building creation wizards, an energy efficiency measure (EEM) wizard and a graphical results display module with a complete up-to-date DOE-2 (version 2.2) building energy use simulation program.You can read the eQUEST Overview to get a more complete summary of the features and capabilities of this excellent program.
eQUEST 3.65 is the most recent release.For descriptions of the new features read this document.eQ_WthProc can convert EnergyPlus (epw) files into eQUEST/DOE-2 (bin) files, see weather data area below.
You can see more information about eQUEST including download of program and documentation. You can also view the eQUEST download area to see recent versions of the program, documentation and updates.
Note:eQUEST is Qualified Software for Calculating Commercial Building Tax Deductions first enacted under the Energy Policy Act of 2005 (EPACT), later extended by the Emergency Economic Stabilization Act of 2008 and most recently extended and modified by the PATH Act of 2015. eQUEST 3.65 is qualified, effective 19 October 2016, for buildings placed into service on or after to January 1, 2016; eQUEST 3.63b is qualified, effective 9 September 2009, for buildings placed into service prior to January 1, 2016. The requirements for software to be qualified for use in these deductions were first covered by IRS Notice 2006-52 and then amplified by IRS IRB 2008-14 and again clarified by IRS IRB 2012-17 with further guidelines provided by DOE and added DOE guidelines for buildings placed in service in 2016 and later.The submission packages, including ASHRAE Standard 140 testing, can be found here.
DOE-2 is a widely used and accepted freeware building energy analysis program that can predict the energy use and cost for all types of buildings. DOE-2 uses a description of the building layout, constructions, operating schedules, conditioning systems (lighting, HVAC, etc.) and utility rates provided by the user, along with weather data, to perform an hourly simulation of the building and to estimate utility bills. The “plain” DOE-2 program is a “Command Prompt” program which requires substantial experience to learn to use effectively while offering researchers and experts significant flexibility; eQUEST is a complete interactive Windows implementation of the DOE-2 program with added wizards and graphic displays to aid in the use of DOE-2.
You can review more information about DOE-2 including download of program and documentation. We currently offer you our “latest and greatest” version as well as “legacy” version. DOE-2.2 is the newest DOE-2 building energy simulation and cost calculation engine. DOE-2.2 is the “simulation engine” contained within eQUEST; we strongly recommend you consider eQUEST before trying to use “plain” DOE-2. DOE-2.2 can run in windows versions from XP to 10. DOE-2.1E is the “legacy” version of DOE-2.
Note:DOE-2 is Qualified Software for Calculating Commercial Building Tax Deductions first enacted under the Energy Policy Act of 2005 (EPACT), later extended by the Emergency Economic Stabilization Act of 2008 and most recently extended and modified by the PATH Act of 2015. DOE-2.2-48y is qualified, effective 19 October 2016, for buildings placed into service on or after to January 1, 2016; DOE-2.2-047d is qualified, effective 9 September 2009, for buildings placed into service prior to January 1, 2016. The requirements for software to be qualified for use in these deductions were first covered by IRS Notice 2006-52 and then amplified by IRS IRB 2008-14 and again clarified by IRS IRB 2012-17 with further guidelines provided by DOE and added DOE guidelines for buildings placed in service in 2016 and later.The submission packages, including ASHRAE Standard 140 testing, can be found here.
The Weather Data & Utilities page provides a description of and access to weather data processing utilities which provide a variety of pre-processed weather data compatible with eQUEST, DOE-2.x and PowerDOE. The available utilities include eQ_WthProc which can process EnergyPlus (epw) and DOEWthwhich can process NOAA/NCDC (TRY, TMY, etc.) files into eQUEST/DOE-2 (bin) files.Utilities are also available to process eQUEST/DOE-2 (bin) files, including the capability to list, convert to/from text format, create statistical summaries, and other functions.
PowerDOE is not available as it has been discontinued in favor of eQUEST. PowerDOE is our previous generation (1990's “legacy”) application; use eQUEST for the most up-to-date user interface and DOE-2 simulation capabilities. PowerDOE included an earlier version DOE-2.2 as its simulation 'engine' for all energy and cost calculations. Note that PowerDOE was designed for previous generations of Windows and will not operate properly when installed in more recent versions such as Windows 7. For this reason PowerDOE has been discontinued.
The Life-Cycle Costing (LCC) analysis method is recognized to reliably identify cost optimal building design solutions yet it is not widely used with confidence. The National Institute of Standards and Technology (NIST) and ANSI have suggested standardized LCC nomenclature and conventions so that the entire buildings industry can speak one 'language' when performing LCC analysis. NIST's LCC procedures are embodied in the Building Life-Cycle Cost (BLCC) Program; the NIST BLCC program and related utilities can be downloaded here. Although the LCC procedures used in BLCC have long been published (NIST Handbook 135 1995 Edition) some users express concern that BLCC does not display the intermediate details of its calculations. For this reason we have developed a spreadsheet version of BLCC procedures. Users of our spreadsheet version report greater confidence with its user-friendly 'glass box' implementation of BLCC. Our BLCC spreadsheet includes year 2015 USDOE energy price escalation rates and is available FREE in Excel OfficeXP format (April 2016 version posted 4/22/2016.) View a detailed description of this spreadsheet tool (sample screens, advantages, limitations) or a summary of recent (2015 version) enhancements.
Hvac Simulation software, free download
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Copyright © 1998-2016 James J. Hirsch. All rights reserved.
eQUEST is a registered trademark of James J. Hirsch.PowerDOE is a registered trademark of the Electric Power Research Institute.
“Please accept our thanks and congratulations for your very interesting work which I am sure are having a great positive impact in our society.” — from Roberto Quevedo, Instituto Volcanológico de Canarias, INVOLCAN, Puerto de la Cruz, Tenerife, Canary Islands, Spain
What is it?
Based on computational physics, Energy2D is an interactive multiphysics simulation program that models all three modes of heat transfer—conduction, convection, and radiation, and their coupling with particle dynamics. Energy2D runs quickly on most computers and eliminates the switches among preprocessors, solvers, and postprocessors typically needed to perform computational fluid dynamics simulations. It allows you to design 'computational experiments' to test a scientific hypothesis or solve an engineering problem without resorting to complex mathematics. Work is also underway to incorporate other types of energy transformations (e.g., phase changes and chemical reactions through the Stefan condition) and support multiple types of fluids (e.g., air and water).
How to cite it?
Charles Xie, Interactive Heat Transfer Simulations for Everyone, The Physics Teacher, Volume 50, Issue 4, pp. 237-240, 2012.
|An IR image of a heated model house with a ceiling||An IR image of a heated model house without a ceiling|
|An Energy2D simulation of a heated house with a ceiling||An Energy2D simulation of a heated house without a ceiling|
How well does it model reality?
The conduction part of Energy2D is highly accurate, but the convection and radiation parts are not 100% accurate. Hence, in cases that involve convection and radiation, Energy2D results should be considered as qualitative. The pictures to the right show a comparison of the results of Energy2D simulations with images from infrared thermography for a simple model house. The thermal patterns predicted by Energy2D roughly match those from a thermal camera.
How many papers have used it?
More than 40 scientific papers have used Energy2D as a research tool (not just a citation), demonstrating its wide applications across science and engineering.
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How many books have recommended it?
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The following is a list of books that have recommended Energy2D:
- Franco Landriscina, Simulation and Learning: A Model-Centered Approach, Springer, 2013
- Jiyuan Tu, Guan Heng Yeoh, and Chaoqun Liu, Computational Fluid Dynamics, Second Edition: A Practical Approach, Butterworth-Heinemann, 2012
What people are saying about it?
“...we have suggested the adoption of the platform Energy2D for a very effective “what-if” game in terms of the construction of cases of study eventually much more complex than the one here addressed. We have shown a solid reliability of the simulation in the description of our experiment: it can open the way to a basically unlimited number of applications, including those, for example, in which convective transport phenomena play a non-negligible role.” — from Stefano Oss, European Journal of Physics
“The software program Energy2D is used to solve the dynamic Fourier heat transfer equations for the Convective Concrete case. Energy2D is a relatively new program (Xie, 2012) and is not yet widely used as a building performance simulation tool. To gain more confidence in the predictions with Energy2D, an analytical validation study was therefore carried out first, inspired by the approach described in Hensen and Nakhi (1994). Those analytical solutions and the simulation results of the dynamic response to a 20°C temperature step change on the surface of a concrete construction with the following properties were compared for this research... the simulation results never divert from the exact solution more than 0.45°C and it is therefore considered acceptable to further use this model.” — Dennis de Witte, Marie L. de Klijn-Chevalerias, Roel C.G.M. Loonen, Jan L.M. Hensen, Ulrich Knaack, & Gregor Zimmermann, Journal of Facade Design and Engineering
“Thank you for your absolutely great app which helps me a lot for visualizing my lecture in thermodynamics. It is also very nice to see that three platforms are supported and every single one is free to use. That is just awesome and I want to say thank you for all users. I do not know how many messages of this type you are receiving.” — from Martin Weise, Austria
“In gearing up to teach a course called Building Science this semester, I somehow stumbled across your program Energy2D and Energy3D. I was really impressed by how simple and easy these tools were and I'm definitely going to integrate them into some portion of my lectures.”— Prof. Brent Stephens, Department of Civil, Architectural and Environmental Engineering, Illinois Institute of Technology, USA
“I am currently involved in renewable energy related research activities and teaching. I have downloaded and demonstrating Energy2D for my heat transfer course. It is really a very useful tool.”— Dr. Mazharul Islam, Department of Mechanical Engineering, Taibah University, Saudi Arabia
“Today during the lunch break a little simulated comparison fan in the suction and blowing operation collector here about 50x70 cm and fan with 2 meters / second. [The result] is confirmed by the experiences of several users: pressure losses and less volume of air in the blowing operation.” (Link to the source)
“...what was really interesting, was that when I continued playing with the simulator, sometimes my convection examples would split into two cycling air cells, one above and to the left, one below and to the right, with the hot air blasting right for the cold source, rather than rising. That's really interesting, because I've experienced this when using smoke demonstrations in class, and the fact that the simulator can capture that behavior shows how accurate this teaching tool actually is.” (Link to the source)
“...this free software is basic, yet you can modify properties and all, the desktop download gives better results and the pages have a choice of practical setups to download and use that are very practical” (Link to the source)