
Jeff Maguire enhanced the NREL/OpenStudio-HPXML repository by developing and refining HVAC and water heater modeling features over a two-month period. He standardized water flow curves for two-speed heat pumps, simplifying HVAC performance modeling and improving simulation consistency. For electric water heaters, Jeff refined the UA calculation to better estimate thermal losses by accounting for fractions of heated and unheated water, and aligned tank loss calculations with the UniformEnergyFactor metric. His work involved Ruby and Markdown, with a focus on energy modeling, code refactoring, and documentation. These contributions improved model accuracy, reproducibility, and maintainability, demonstrating strong technical depth and domain understanding.
July 2025 monthly work summary for NREL/OpenStudio-HPXML focusing on water heater modeling improvements and test/documentation updates. Delivered enhanced thermal loss estimation for electric water heaters by refining the UA calculation to account for fractions of unheated and heated water, and introduced a debug comparison workflow with cleanup of extraneous debug output. Aligned energy performance with the UniformEnergyFactor (EF) metric by adding EF-based tank loss calculations, updating related documentation, and refreshing tests to reflect the new UA/U-value behavior.
July 2025 monthly work summary for NREL/OpenStudio-HPXML focusing on water heater modeling improvements and test/documentation updates. Delivered enhanced thermal loss estimation for electric water heaters by refining the UA calculation to account for fractions of unheated and heated water, and introduced a debug comparison workflow with cleanup of extraneous debug output. Aligned energy performance with the UniformEnergyFactor (EF) metric by adding EF-based tank loss calculations, updating related documentation, and refreshing tests to reflect the new UA/U-value behavior.
2025-03 Monthly Highlights: Delivered a focused HVAC modeling enhancement in the NREL/OpenStudio-HPXML repository by standardizing water flow curves for two-speed heat pumps to constant 1.0 values. This simplifies performance modeling, eliminates curve-fitting variability, and improves consistency across simulations, leading to more reliable energy estimates and faster analysis workflows.
2025-03 Monthly Highlights: Delivered a focused HVAC modeling enhancement in the NREL/OpenStudio-HPXML repository by standardizing water flow curves for two-speed heat pumps to constant 1.0 values. This simplifies performance modeling, eliminates curve-fitting variability, and improves consistency across simulations, leading to more reliable energy estimates and faster analysis workflows.

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