Conference proceeding
Development and Validation of a Simulation Testbed for the Intelligent Building Agents Laboratory (IBAL) using TRNSYS
ASHRAE TRANSACTIONS 2020, VOL 126, Vol.126, pp.458-466
ASHRAE Transactions
01 Jan 2020
Abstract
This paper documents the development and validation of a dynamic primary cooling and thermal storage system simulation testbed. The system simulation testbed, sIBAL, is based on the Intelligent Building Agents Laboratory (IBAL) at the National Institute of Standards and Technology (NIST), which is a research infrastructure and testbed for the development, evaluation, and demonstration of intelligent control algorithms. The sIBAL testbed developed in this project will serve as a virtual twin of the real facility for future control algorithm development.
The details of the methodologies used to develop and validate the simulation testbed, which replicates the dynamic behaviors of the primary cooling and ice storage system in the IBAL facility, are presented. The simulation testbed was developed in TRNSYS using built-in component models and MATLAB functions to replicate the two water-cooled chillers, a thermal storage tank, pumps, valves and other components for four different operation modes. Experiments on IBAL components were designed and executed to generate experimental data for model development and verification of the simulation platform.
The validation of the simulation results was carried out in two phases: 1) independent component simulations for the chillers and thermal storage tank, and 2) a combined testbed simulation of the entire hydronic system. Comparison of simulation results to the experimental data obtained from the IBAL facility showed errors within 1 degrees C for the temperatures outputs of both the chiller and the thermal storage model. The error is within an acceptable range for further intelligent control algorithms development. The findings from the study are summarized and presented along with areas where additional research is needed. In addition, data filtering procedures and model refinement measures utilized to improve the accuracy and accelerate the computation time of the simulation are presented.
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Details
- Title
- Development and Validation of a Simulation Testbed for the Intelligent Building Agents Laboratory (IBAL) using TRNSYS
- Creators
- Ojas Pradhan - Drexel Univ, Bldg Sci & Engn Grp BSEG, Philadelphia, PA 19104 USAAmanda Pertzborn - NIST, Mech Syst & Controls Grp, Energy & Environm Div EED, Engn Lab EL, Gaithersburg, MD 20899 USALiang Zhang - Natl Renewable Energy Lab, Commercial Bldg Res Grp, Golden, CO USAJin Wen - Drexel UniversityASHRAE
- Publication Details
- ASHRAE TRANSACTIONS 2020, VOL 126, Vol.126, pp.458-466
- Series
- ASHRAE Transactions
- Publisher
- Amer Soc Heating, Refrigerating And Air-Conditioning Engs
- Number of pages
- 9
- Grant note
- 70NANB17H277 / National Institute of Standards and Technology; National Institute of Standards & Technology (NIST) - USA
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Identifiers
- 991019170342504721
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- Domestic collaboration
- Web of Science research areas
- Construction & Building Technology
- Engineering, Mechanical
- Thermodynamics