https://orcid.org/0000-0002-3907-3544
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Abstract
Previous studies have traced the earliest origins of today’s whole-building energy simulation programs, such as EnergyPlus, eQUEST, DOE-2.1E, TRNSYS, TRACE, and HAP, to two public simulation programs in the early 1970’s, including: the Post Office program and the NBSLD program. However, in the 1960’s, there were earlier public simulation programs that had a significant influence on developments of the Post Office and NBSLD programs and are therefore related to many of the today’s whole-building energy simulation programs but were not discussed in previous studies, including: the NATEOUS program, the SHEP program, and the TACS program. In addition, there were public supplementary calculation programs that also contributed to developments of the Post Office and NBSLD programs, including: the CP-26 program and the RESPTK program. Therefore, the purpose of this study is to further clarify the earliest origins of today’s whole-building energy simulation programs based on the analysis of these early computer programs. This study extends the previous research (Oh and Haberl 2016) that discussed the origins of today’s whole-building energy simulation programs for high-performance commercial buildings and the thermal analysis methods used in these programs.
Acknowledgments
The authors express their deepest appreciation to Mr. Robert H. Henninger who helped to clarify the relationships between early computer programs shown in the genealogy chart of this study as well as Mr. Jason Glazer at GARD Analytics who provided valuable material, including: user and engineering manuals and relevant documents of the early computer programs.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Notes
1 In the previous study, the NBS shelter simulation programs were named the Mathematical Analysis of Thermal Environment in Underground Shelters (MATEUS) program (Ahn Citation2019).