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  <!-- Calculator category list pages -->
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    <loc>https://measur.ornl.gov/calculators/calculators-list</loc>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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  <url>
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    <lastmod>2026-06-15</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
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  <!-- General / Utility calculators -->
  <url>
    <loc>https://measur.ornl.gov/calculators/unit-converter</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/combined-heat-power</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/cash-flow</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/power-factor-correction</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/power-factor-triangle</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/co2-conversion</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/electricity-reduction</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/natural-gas-reduction</loc>
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    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/altitude-correction</loc>
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  <url>
    <loc>https://measur.ornl.gov/calculators/weather-bins</loc>
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  <url>
    <loc>https://measur.ornl.gov/calculators/pre-assessment</loc>
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  <url>
    <loc>https://measur.ornl.gov/calculators/water-reduction</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/energy-equivalency</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/energy-use</loc>
    <lastmod>2026-06-15</lastmod>
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  <url>
    <loc>https://measur.ornl.gov/calculators/pipe-insulation-reduction</loc>
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    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/tank-insulation-reduction</loc>
    <lastmod>2026-06-15</lastmod>
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    <priority>0.6</priority>
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  <!-- Compressed Air calculators -->
  <url>
    <loc>https://measur.ornl.gov/calculators/compressed-air-reduction</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/compressed-air-pressure-reduction</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/air-leak</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/air-flow-conversion</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/bleed-test</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/bag-method</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/pneumatic-air</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/receiver-tank</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/receiver-tank-usable-air</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/pipe-sizing</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/air-velocity</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/system-capacity</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/operating-cost</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <!-- Fan calculators -->
  <url>
    <loc>https://measur.ornl.gov/calculators/fan-system-checklist</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/fan-analysis</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/fan-curve</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/fan-efficiency</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/fan-psychrometric</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>

  <!-- Lighting calculators -->
  <url>
    <loc>https://measur.ornl.gov/calculators/lighting-replacement</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/fixture</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>

  <!-- Motor calculators -->
  <url>
    <loc>https://measur.ornl.gov/calculators/nema-energy-efficiency</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/motor-performance</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/percent-load-estimation</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/motor-drive</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/replace-existing</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/full-load-amps</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>

  <!-- Process heating (furnace) calculators -->
  <url>
    <loc>https://measur.ornl.gov/calculators/o2-enrichment</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/atmosphere</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/cooling</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/wall-loss</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/opening</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/heat-cascading</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/flue-gas</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/air-heating</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/waste-heat</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/charge-material</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/leakage</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/stack-loss</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>

  <!-- Pump calculators -->
  <url>
    <loc>https://measur.ornl.gov/calculators/achievable-efficiency</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/head-tool</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/specific-speed</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/pump-curve</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>

  <!-- Steam calculators -->
  <url>
    <loc>https://measur.ornl.gov/calculators/boiler</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
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  <url>
    <loc>https://measur.ornl.gov/calculators/boiler-blowdown-rate</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/deaerator</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/flash-tank</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/header</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/heat-loss</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/prv</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/saturated-properties</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/steam-properties</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/condensing-economizer</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/turbine</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/steam-reduction</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/water-heating</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/feedwater-economizer</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>

  <!-- Process cooling calculators -->
  <url>
    <loc>https://measur.ornl.gov/calculators/cooling-tower-fan</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/cooling-tower</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/chiller-performance</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/cooling-tower-basin</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/chiller-staging</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>

  <!-- Waste water calculators -->
  <url>
    <loc>https://measur.ornl.gov/calculators/o2-utilization-rate</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/state-point-analysis</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>
  <url>
    <loc>https://measur.ornl.gov/calculators/valve-energy-loss</loc>
    <lastmod>2026-06-15</lastmod>
    <changefreq>yearly</changefreq>
    <priority>0.6</priority>
  </url>

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