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CoolTools 1.1.1, published by IPU, is an evolving engineering application that re-imagines the legacy CoolPack suite developed in the 1990s at the Technical University of Denmark’s Section of Thermal Energy. Packaged as a single installable unit, the program delivers a set of discrete simulation models dedicated to vapor-compression refrigeration systems. Engineers invoke separate calculators to perform cycle analysis (contrasting one-stage direct-expansion and flooded architectures), size compressors, heat exchangers and expansion devices from general performance criteria, or predict operating states when component geometries are already fixed. Dedicated modules quantify component efficiencies, rank overall system performance, and support psychrometric investigations such as moist-air treatment. Energy-analysis and optimisation routines assist designers in comparing refrigerant options and fine-tuning set-points for minimum power demand. Although still under active development, version 1.1.1 already incorporates updated refrigerant property libraries and modern cycle configurations that were unavailable in the original CoolPack, positioning the software as a prospective full successor. The release history now spans two public builds, with iterative enhancements focused on numerical robustness and extended fluid support. Occupying the specialised “HVAC & refrigeration engineering” category, CoolTools targets consultants, equipment manufacturers, researchers and advanced students who need transparent, physics-based results without the complexity of general-purpose thermodynamic suites. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.
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