<![CDATA[Richard Rusk, Engineer: Reference Bookshelf]]>https://www.richardrusk.com/s/reference-bookshelfhttps://substackcdn.com/image/fetch/$s_!osTb!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F8f17f895-5923-4dab-ae56-94de6fc1a03e_1280x1280.pngRichard Rusk, Engineer: Reference Bookshelfhttps://www.richardrusk.com/s/reference-bookshelfSubstackFri, 17 Apr 2026 06:08:35 GMT<![CDATA[Most of the deregulated gases are dangerous]]>https://www.richardrusk.com/p/most-of-the-deregulated-gases-arehttps://www.richardrusk.com/p/most-of-the-deregulated-gases-areFri, 13 Feb 2026 17:19:39 GMT

Here is the list:

  • Carbon dioxide (CO₂)

  • Methane (CH₄)

  • Nitrous oxide (N₂O)

  • Hydrofluorocarbons (HFCs)

  • Perfluorocarbons (PFCs)

  • Sulfur hexafluoride (SF₆)

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]]><![CDATA[A second rule of thumb to see what happens]]>https://www.richardrusk.com/p/a-second-rule-of-thumb-to-see-whathttps://www.richardrusk.com/p/a-second-rule-of-thumb-to-see-whatSat, 17 Jan 2026 17:30:55 GMTThe amount of air delivered in an office building is about 1 cfm per square foot of floor space.

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]]><![CDATA[One rule of thumb to test my new Reference Bookshelf section]]>https://www.richardrusk.com/p/one-rule-of-thumb-to-test-my-newhttps://www.richardrusk.com/p/one-rule-of-thumb-to-test-my-newSat, 10 Jan 2026 15:39:36 GMTThe kW/ton of a chiller is about 1 kW/ton historically, and 0.6 or so currently.

The kW/ton of split systems is 1.4 kW/ton historically.

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]]><![CDATA[Rule of thumb for utility battery pricing]]>https://www.richardrusk.com/p/rule-of-thumb-for-utility-batteryhttps://www.richardrusk.com/p/rule-of-thumb-for-utility-batterySat, 13 Dec 2025 20:50:36 GMTA quote from the article:

The energy think tank’s analysis, based on October 2025 auctions in Italy, Saudi Arabia, and India and interviews with active developers, shows the cost of a full utility-scale battery system connected to the grid at $125/kWh for long-duration projects of four hours or more outside China and the United States. Core battery equip…

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