Explainers
Interactive walkthroughs of how the equipment actually behaves. Some show how a system behaves; others open it up so you can check the arithmetic yourself.
- Hydr
How Pressure Independent Valves Operate
A differential pressure regulator in series with a control valve. Move either side's pressure and watch the regulator absorb the difference so the ball sees roughly constant ΔP.
HydronicsValvesControls - Hydr
How a Plate and Frame Heat Exchanger Sizes Itself
Hold any inlet or outlet temperature and something else has to move — a valve, a plate count, or a reset schedule. Enter real plate geometry and watch the approach, the pressure drop and the film coefficients argue with each other.
HydronicsHeat TransferSizing - Hydr
Why Hydronic Systems Need Expansion Tanks, and How Big
Water grows about 3% from fill to 180 °F and barely compresses. Move the tank up and down a building and watch the size change while the pressures at the top and bottom stay put.
HydronicsPressurizationSizing - AI
How a Language Model Answers a Question
A working transformer small enough to check by hand. Ask it a question and follow every number, from the word lookup through attention and softmax to the word it picks, one pass per word.
AILanguage ModelsMath
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