This page now separates the documented twin-chamber pulsometer topology from performance claims that require a particular pump and test data. The connected view alternates steam admission and condensation/refill between two chambers while the calculator reports only declared-volume bookkeeping and ideal water energy.
Pulsometer Declared-Charge Ledger
Enter a declared water charge per chamber event, alternating chamber-pair frequency and static head. The connected view reports exact declared discharge-event count, water volume, ideal water energy per pair and ideal hydraulic power.
Equation Used
- V is a declared water volume discharged by one chamber event, not geometric chamber capacity.
- f is a declared count of complete alternating left/right chamber pairs per minute.
- Exactly two declared discharge events are counted per pair.
- H is a declared static water head.
- Water density is 1000 kg/m3 and standard gravity is 9.80665 m/s2 for the ideal energy ledger.
- Filling, condensation, valve timing, steam pressure and quality, suction conditions, losses, actual efficiency, flow capacity, water hammer, materials, ratings, maintenance and safe operation are excluded.
Replaces unsupported generic pulsometer performance and operating advice with exact declared charge-event bookkeeping, ideal water energy and a source-grounded qualitative twin-chamber cycle.
A distributor alternates steam between two water chambers
Hall's patent and the 1911 Encyclopaedia Britannica describe two chambers joined at the top to a steam inlet. A ball valve admits steam to one chamber while closing the other; steam pressure drives water through a delivery check, then condensation produces the pressure reduction associated with refilling.
The connected animation alternates these qualitative states and shows suction and delivery checks. It does not calculate valve motion, pressure or condensation rate.
Use this page only as a declared-event ledger
The worksheet multiplies declared water charge by declared alternating-pair frequency, then calculates ideal water energy at a declared static head.
It cannot predict delivery, steam consumption, efficiency, suction capability, capacity or safe operation for a real pulsometer.
Count two declared chamber events per alternating pair
Litres are converted to cubic metres for the energy calculation. These identities use declared charge and frequency; they are not a performance curve.
A transparent declared-charge example
For V=10 L per chamber event, f=10 alternating pairs/min and H=10 m, the ledger counts 20.00 events/min and 200.00 L/min. Ideal water energy is 1961.33 J/pair and ideal hydraulic power is 326.89 W.
No actual pump delivery or steam requirement follows.
Declared charge arithmetic is not a pump rating
Actual pulsometer behavior depends on chamber geometry, steam supply, condensation and heat transfer, suction conditions, check valves, delivery system and transient losses. Those require device-specific drawings and test data.
The former generic volumetric-efficiency slider, universal cycle range, capacity, temperature, tolerance, deployment, maintenance and troubleshooting claims are removed.
Pulsometer ledger questions
Does chamber capacity equal discharged charge?
Not necessarily; V is a declared water charge per event.
Why are there two events per pair?
One left and one right chamber discharge are counted in each declared alternating pair.
Does ideal hydraulic power include steam losses?
No.
Can this size or operate a pulsometer?
No.
Pulsometer references
- C. H. Hall, US Patent 131,518, Improvement in Steam Vacuum-Pumps: sectional twin-chamber steam-vacuum pump construction.
- Encyclopaedia Britannica (1911), Steam Engine, Pulsometer: two chambers, steam inlet, distributor ball, delivery check and air-vessel topology.
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