{
  "version": "1.8.2",
  "scope": "Sources used by the XPower Cold textbook",
  "policy": "Each source supports only the explicitly stated use. It does not certify XPower results or imply affiliation.",
  "sources": [
    {
      "organization": "OpenStax",
      "date_or_version": "College Physics 2e",
      "title": "Applications of Thermodynamics: Heat Pumps and Refrigerators",
      "url": "https://openstax.org/books/college-physics-2e/pages/15-5-applications-of-thermodynamics-heat-pumps-and-refrigerators",
      "used_for": "Idealized refrigeration cycle, coefficient of performance and heat balance",
      "does_not_establish": "Performance of a supermarket installation or XPower algorithms"
    },
    {
      "organization": "United States Environmental Protection Agency",
      "date_or_version": "current web page",
      "title": "GreenChill Advanced Refrigeration Technologies",
      "url": "https://www.epa.gov/greenchill/advanced-refrigeration-technologies",
      "used_for": "Refrigeration system classes and environmental context",
      "does_not_establish": "XPower performance"
    },
    {
      "organization": "United States Department of Energy",
      "date_or_version": "September 2023, version 4 supplement",
      "title": "Measurement and Verification Guidelines",
      "url": "https://www.energy.gov/sites/default/files/2023-09/supplement-to-mv-guidelines_version-4.pdf",
      "used_for": "Baseline, normalization, observation period and uncertainty",
      "does_not_establish": "Any percentage without project measurements"
    },
    {
      "organization": "Nobel Prize",
      "date_or_version": "1977 lecture",
      "title": "Time, Structure and Fluctuations by Ilya Prigogine",
      "url": "https://www.nobelprize.org/uploads/2018/06/prigogine-lecture.pdf",
      "used_for": "Open nonequilibrium systems, dissipative structures, instabilities and limit-cycle oscillations",
      "does_not_establish": "A canonical refrigeration cycle named after Prigogine"
    },
    {
      "organization": "Danfoss",
      "date_or_version": "current web page; article references 2019",
      "title": "ADAP-KOOL refrigeration control system",
      "url": "https://www.danfoss.com/en/about-danfoss/articles/dcs/adapting-to-a-changing-world-for-over-30-years-adap-kool-refrigeration-control-system/",
      "used_for": "System family and supplier statement of up to 33 percent savings against static systems",
      "does_not_establish": "A direct comparison with the XPower range"
    },
    {
      "organization": "Danfoss",
      "date_or_version": "current web page",
      "title": "Intelligent and adaptive control in transcritical CO2 refrigeration",
      "url": "https://www.danfoss.com/en/service-and-support/articles/dcs/intelligent-and-adaptive-control-in-transcritical-co2-refrigeration/",
      "used_for": "Coordinated pressure, refrigerant feed and defrost control",
      "does_not_establish": "That the textbook model reproduces Danfoss software"
    },
    {
      "organization": "Danfoss",
      "date_or_version": "current web page",
      "title": "How thermostatic expansion valves work",
      "url": "https://www.danfoss.com/en-us/service-and-support/case-stories/dcs/how-thermostatic-expansion-valves-work/",
      "used_for": "Pressure, saturation temperature and superheat relationship",
      "does_not_establish": "Selection or setpoints for a specific installation"
    },
    {
      "organization": "Danfoss",
      "date_or_version": "14 February 2022",
      "title": "Danfoss Heat Recovery Unit case",
      "url": "https://www.danfoss.com/en-gb/service-and-support/case-stories/dcs/danfoss-heat-recovery-unit-hru/",
      "used_for": "Installer statement about 50 installations and 2.4 year average payback",
      "does_not_establish": "The individual store payback or a primary project cost schedule"
    },
    {
      "organization": "Danfoss",
      "date_or_version": "current web page",
      "title": "NeoCharge",
      "url": "https://www.danfoss.com/en-sg/campaigns/dcs/neocharge/",
      "used_for": "Refrigerant state and charge diagnostics",
      "does_not_establish": "Parameters of the textbook model"
    },
    {
      "organization": "Cummins",
      "date_or_version": "technical document 0056648",
      "title": "Generator set sizing and motor starting",
      "url": "https://mart.cummins.com/imagelibrary/data/assetfiles/0056648.pdf",
      "used_for": "Starting current and voltage dip considerations",
      "does_not_establish": "Numerical results of the synthetic start model"
    },
    {
      "organization": "NASA",
      "date_or_version": "2012 technical publication",
      "title": "Spacesuit heat rejection systems",
      "url": "https://ntrs.nasa.gov/api/citations/20120004284/downloads/20120004284.pdf",
      "used_for": "Local heat collection, circulation and consumable resources",
      "does_not_establish": "A design for supermarket refrigeration"
    },
    {
      "organization": "NASA",
      "date_or_version": "technical overview",
      "title": "International Space Station Active Thermal Control System",
      "url": "https://www.nasa.gov/wp-content/uploads/2021/02/473486main_iss_atcs_overview.pdf",
      "used_for": "Separation of heat collection, transport and radiative rejection",
      "does_not_establish": "Direct transfer of spacecraft construction to a store"
    },
    {
      "organization": "NASA",
      "date_or_version": "1973 technical publication",
      "title": "Regenerative cooling of liquid rocket combustion chambers",
      "url": "https://ntrs.nasa.gov/api/citations/19730022965/downloads/19730022965.pdf",
      "used_for": "One flow serving thermal and working functions",
      "does_not_establish": "Transfer of rocket hardware or chemical energy accounting to a store"
    },
    {
      "organization": "NASA",
      "date_or_version": "Artemis mission update",
      "title": "Cause of Artemis I Orion heat shield char loss",
      "url": "https://www.nasa.gov/missions/artemis/nasa-identifies-cause-of-artemis-i-orion-heat-shield-char-loss/",
      "used_for": "Finite heat pulse, consumable protection and heat-flux history",
      "does_not_establish": "A store heat-protection design"
    },
    {
      "organization": "NASA",
      "date_or_version": "current technical guide",
      "title": "Small spacecraft thermal control",
      "url": "https://www.nasa.gov/smallsat-institute/sst-soa/thermal-control/",
      "used_for": "Radiators, coatings, storage and environmental constraints",
      "does_not_establish": "Accuracy of the idealized radiator model for a mission"
    },
    {
      "organization": "Bartosz Ciechanowski",
      "date_or_version": "current website",
      "title": "Interactive visual explanations",
      "url": "https://ciechanow.ski/",
      "used_for": "Editorial principle of interactive physical explanation",
      "does_not_establish": "Authorship or verification of XPower text and calculations"
    },
    {
      "organization": "I. Prigogine and R. Lefever, Université Libre de Bruxelles",
      "date_or_version": "1968, Journal of Chemical Physics 48, 1695–1700",
      "title": "Symmetry Breaking Instabilities in Dissipative Systems. II",
      "url": "https://doi.org/10.1063/1.1668896",
      "used_for": "Original chemical-model context of the Brusselator, symmetry-breaking instabilities and temporal order in open dissipative systems",
      "does_not_establish": "The textbook term, worldwide naming priority, or an experimentally verified model of supermarket self-organization"
    },
    {
      "organization": "P. Glansdorff, Université Libre de Bruxelles",
      "date_or_version": "1987, Foundations of Physics 17, 653–666",
      "title": "Irreversibility in macroscopic physics: From Carnot cycle to dissipative structures",
      "url": "https://link.springer.com/article/10.1007/BF01889539",
      "used_for": "Title and abstract: historical continuity from Carnot thermodynamics to nonequilibrium stability and dissipative structures",
      "does_not_establish": "A new named Prigogine cycle or XPower performance"
    },
    {
      "organization": "OpenStax",
      "date_or_version": "University Physics Volume 2, section 4.5",
      "title": "The Carnot Cycle",
      "url": "https://openstax.org/books/university-physics-volume-2/pages/4-5-the-carnot-cycle",
      "used_for": "Reversible engine between two thermal reservoirs and ideal efficiency bound",
      "does_not_establish": "Performance of an open supermarket system with additional resource inputs"
    }
  ]
}
