Thermodynamics
Fluid Heating & Cooling Time
Calculate the time and energy required to heat or cool a volume of fluid (water, oil, air) from one temperature to another.
Units:
Hydraulic oil heating: cold start-up with oil below 15°C can cause pump cavitation and high pressure loss in valves. Many hydraulic systems use warm-up cycles or immersion heaters. Minimum recommended oil temperature for operation: 15–20°C.
Q [kJ] = m × cp × ΔT | t [s] = Q / P_heater
Input
Fluid volume iVolume of fluid to be heated or cooled in litres.
litre
Fluid type iSelect the fluid. This determines density and specific heat capacity.
Starting temperature iInitial temperature of the fluid in °C.
°C
Target temperature iDesired final temperature of the fluid in °C.
°C
Heater / cooler power iPower of the heating or cooling device in kW.
kW
Result
Temperature change ΔT [K]
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Energy required [kJ]
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Energy required [kWh]
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Heating/cooling time [min]
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Heating/cooling time [h]
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