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Title: Reducing EnergyPlus Run Time For Code Compliance Tools

Abstract

Integration of the EnergyPlus ™ simulation engine into performance-based code compliance software raises a concern about simulation run time, which impacts timely feedback of compliance results to the user. EnergyPlus annual simulations for proposed and code baseline building models, and mechanical equipment sizing result in simulation run times beyond acceptable limits. This paper presents a study that compares the results of a shortened simulation time period using 4 weeks of hourly weather data (one per quarter), to an annual simulation using full 52 weeks of hourly weather data. Three representative building types based on DOE Prototype Building Models and three climate zones were used for determining the validity of using a shortened simulation run period. Further sensitivity analysis and run time comparisons were made to evaluate the robustness and run time savings of using this approach. The results of this analysis show that the shortened simulation run period provides compliance index calculations within 1% of those predicted using annual simulation results, and typically saves about 75% of simulation run time.

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1178507
Report Number(s):
PNNL-SA-101620
BT0400000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: ASHRAE/IBPSA Building Simulation Conference, September 10-12, 2014, Atlanta, Georgia, 33-40
Country of Publication:
United States
Language:
English
Subject:
energyplus, simulation, runtime, run time, comcheck, code

Citation Formats

Athalye, Rahul A., Gowri, Krishnan, Schultz, Robert W., and Glazer, Jason. Reducing EnergyPlus Run Time For Code Compliance Tools. United States: N. p., 2014. Web.
Athalye, Rahul A., Gowri, Krishnan, Schultz, Robert W., & Glazer, Jason. Reducing EnergyPlus Run Time For Code Compliance Tools. United States.
Athalye, Rahul A., Gowri, Krishnan, Schultz, Robert W., and Glazer, Jason. Fri . "Reducing EnergyPlus Run Time For Code Compliance Tools". United States.
@article{osti_1178507,
title = {Reducing EnergyPlus Run Time For Code Compliance Tools},
author = {Athalye, Rahul A. and Gowri, Krishnan and Schultz, Robert W. and Glazer, Jason},
abstractNote = {Integration of the EnergyPlus ™ simulation engine into performance-based code compliance software raises a concern about simulation run time, which impacts timely feedback of compliance results to the user. EnergyPlus annual simulations for proposed and code baseline building models, and mechanical equipment sizing result in simulation run times beyond acceptable limits. This paper presents a study that compares the results of a shortened simulation time period using 4 weeks of hourly weather data (one per quarter), to an annual simulation using full 52 weeks of hourly weather data. Three representative building types based on DOE Prototype Building Models and three climate zones were used for determining the validity of using a shortened simulation run period. Further sensitivity analysis and run time comparisons were made to evaluate the robustness and run time savings of using this approach. The results of this analysis show that the shortened simulation run period provides compliance index calculations within 1% of those predicted using annual simulation results, and typically saves about 75% of simulation run time.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {9}
}

Conference:
Other availability
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