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• Development of a Web-Based Code-Compliant ASHRAE 90.1-1999 Commercial Simulation for Texas

  Haberl, J.; Culp, C.; Yazdani, B. (IBPSA-USA (http://www.ibpsa.us), July 2009)

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  Abstract:

  This paper describes the development of a web-based, code-compliant ASHRAE Standard 90.1-1999 commercial simulation for Texas. Included in the paper is a description of the software and database platform used in the web application and how this software is attached to the DOE-2 legacy software running on a cluster of servers. This tool will be used by commercial builders in Texas to check code compliance of new commercial construction for specific building types.

  URI:

  http://hdl.handle.net/1969.1/94783

  Files in this item: 1

  ESL-PA-09-07-03.pdf   (627.5Kb)
• Development of a High-Performance Office Building Simulation Model for a Hot and Humid Climate

  Cho, S.; Haberl, J. (IBPSA-USA (http://www.ibpsa.us), July 2009)

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  Abstract:

  This paper presents the results of implementing 14 high-performance measures in a prototypical office building in a hot and humid climate using the DOE-2 simulation program. The objectives of this research were to discover high-performance measures applicable to office buildings in hot and humid climates and to develop a high-performance (maximum energy-efficient) building model that only uses technologies readily available in the contemporary market. The high-performance model showed 48% total energy savings above the ASHRAE 90.1-1999 code and 61% savings when compared to the calibrated simulation model of the case-study building. The results show that substantial energy savings can be achieved only by using common technologies.

  URI:

  http://hdl.handle.net/1969.1/94782

  Files in this item: 1

  ESL-PA-09-07-02.pdf   (999.2Kb)
• Development of a Web-Based, Code-Compliant 2001 IECC Residential Simulator for Texas

  Haberl, J.; Culp, C.; Yazdani, B. (IBPSA-USA (http://www.ibpsa.us), July 2009)

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  Abstract:

  This paper describes the development of a web-based, code-compliant 2001 IECC1 residential simulation for Texas. Included in the paper is a description of the software and database platform used in the web application and how this software is attached to the DOE-2 legacy software running on a cluster of servers attached to the web. Additional information is included about how a residence is dynamically updated by the web-page, using macro commands and a flexible yet fixed-schematic input file. This tool is currently in use by builders in Texas to check code compliance of new residential construction. It also calculates NOx, SOx and CO2 emissions reductions from the energy savings of the proposed house for the electric utility associated with the user using the data from the Emissions and Generation Resource Integrated Database (eGRID) provided by U.S. Environmental Protection Agency.

  URI:

  http://hdl.handle.net/1969.1/94781

  Files in this item: 1

  ESL-PA-09-07-01.pdf   (822.5Kb)
• An Improved Procedure for Developing Calibrated Hourly Simulation Models

  Bou-Saada, T. E.; Haberl, J. S. (IBPSA-USA (http://www.ibpsa.us), August 1995)

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  Abstract:

  In order to improve upon previous calibration techniques, this paper presents new calibration methods including a temperature bin analysis to improve hourly x-y scatter plots, a 24-hour weatherdaytype bin analysis to allow for the evaluation of hourly temperature and schedule dependent comparisons, and a 52-week bin analysis to facilitate the evaluation of long-term trends. In addition, architectural rendering is suggested as a means of verifying the building envelope dimensions and external shading placement. Several statistical methods are also reviewed to evaluate the goodness-offit including percent difference calculations, mean bias error (MBE), and the coefficient of variation of the root mean squared error (CV(RMSE)). The procedures are applied to a case study building located in Washington, D.C. Nine months of hourly whole-building electricity data and site-specific weather data were measured and used with the DOE- 2. ID building simulation program to test the new techniques. Use of the new calibration procedures were able to produce an hourly MBE of -0.7% and a CV(RMSE) of 23.1% which compare favorably with the most accurate hourly neural network models.

  URI:

  http://hdl.handle.net/1969.1/94780

  Files in this item: 1

  ESL-PA-95-08-01.pdf   (5.105Mb)
• Exploring an Integrated Data Base Structure for Building Energy Monitoring Data

  Haberl, J.; Jagannathan, V.; Lopez, R.; Sparks, R.; Kissock, K.; Willis, D.; Claridge, D. (IBPSA-USA (http://www.ibpsa.us), April 1991)

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  Abstract:

  One of the inherent problems with monitoring hourly energy use and environmental conditions in commercial buildings is efficiently processing the "sea" of data that accumulates into an easily understood form. Even when the data exist, building energy analysts generally rely on multiple "flat" ASCII files for storing and retrieving their data only to find that it can take several hours to perform a simple task such as creating a 2-D time series plot of energy use using data from several monitored channels. Integrated data base structures such as relational data bases, if carefully designed, may offer some relief because they can provide the user with an easier access to the data that automatically keeps track of where data are and how to assemble them to satisfy a particular request. This paper presents a brief review of the different types of data required for a large building monitoring project, and the methods that have been developed for acquiring, archiving and retrieving data for the Texas LoanSTAR program, an eight year, $98.6 million revolving loan program for energy conservation retrofits in Texas state, local government and school buildings.

  URI:

  http://hdl.handle.net/1969.1/94779

  Files in this item: 1

  ESL-PA-91-04-01.pdf   (2.045Mb)