RESEM-CA:
A Simulation Tool for Retrofit Analysis

Goal Statement:
To deliver an enhanced operational version of RESEM-CA. This enhanced version will include electric peak demand analysis, a building templates database/generator, an advanced baselining/calibration process, increased automation, improved robustness and Energy Conservation Measure (ECM) savings analysis routines.

Results:
We have further developed enhancements to the computational methods for ECM descriptions and resulting performance characteristics: First costs, ECM life-cycle analysis, ranking and determination of optimal packages, utility rate schedules, building prototype templates.

Additionally, we have completed a RESEM-CA validation STUDY which ran the tool side-by-side with DOE2.1E. The study shows that RESEM-CA produces output that is mostly in favorable agreement with DOE2.1E results. However, the study also identified some calculations that could be improved. A public report on the validation study will be released once an internal review is completed.

A preliminary beta version, with a simple interactive interface is now in internal testing. Demonstrations and distribution to beta users for feedback have not yet been scheduled.

Downloads and Links:

• Report on calibration of RESEM calculation engine against DOE2.1E (1.7 MB, 68 pp)

Contact: William Carroll, Lawrence Berkeley National Laboratory (LBNL), (510) 486-4890