Lumped sensible heating with documented properties
Sensible-Heating Energy & Average-Power Calculator
Calculate ideal sensible heat, average useful thermal power and input power using a documented mass, average specific heat, temperature interval, heating time and efficiency basis.
Documented sensible-heating result
Implemented general thermodynamics
Q = mc̄ΔT
Puseful = Q/t
Pinput = Puseful/η
m is kilograms, c̄ is an average J/(kg·K) value valid over the entered interval, ΔT has the same numerical magnitude in kelvins and degrees Celsius, Q is joules, t is seconds and η is a documented dimensionless overall efficiency. These are general energy/rate relations, not a heater-selection standard.
Source and limitations
OpenStax Physics gives Q=mcΔT and notes that c depends on material and phase. Its phase-transition discussion states that this relation does not cover matter undergoing a change of state. For strongly temperature-dependent c, use Q=m∫c(T)dT or a validated property model.
Why the former presets/loss factor were removed
The former page changed one volume field between litres for liquids and cubic metres for air, inserted generic water/air/oil/glycol density and c values, and always added 15% as “with losses”. It also recommended universal 10–50% safety additions. Property values vary with temperature, composition and pressure, and an efficiency η is not equivalent to multiplying useful power by 1.15.
Not equipment sizing: verify electrical supply, controls, maximum surface/film temperature, heat flux, circulation, vessel duty, startup/transient cases, overtemperature protection and applicable equipment/process codes. The calculated average input power is only as valid as the entered mass, c̄ and efficiency model.
Nikolai Shelkovenko
Nikolai Shelkovenko is a vibration analysis engineer and the founder and CEO of Vibromera. For more than 15 years he has balanced rotating equipment in the field rather than on a test bench: mulchers, industrial fans, crushers, centrifuges, shafts and spindles. That work is what the Balanset instruments grew out of — they were designed as a tool a specialist can carry to the machine and use alone, on site, not as laboratory equipment. Vibromera was founded in 2017 and has been based in Porto, Portugal, since 2023. Development, assembly and support of the Balanset line all happen here. The flagship instrument is the Balanset-1A, a portable analyser for single- and two-plane balancing and for vibration diagnostics. Nikolai is personally involved in customer support, in working through difficult balancing cases and in the development of the software. He works with customers worldwide, in any language.
