25 tools
Heat & Fluids
Pressure, buoyancy, pipe flow and head loss, specific and latent heat, conduction, convection, radiation and the gas laws — the two halves of thermofluids, each stating the law it comes from.
Tools in this category
- Heat & FluidsDensity CalculatorFill in any two of mass, volume and density and get the third.
- Heat & FluidsHeat Conduction CalculatorHeat flow through a solid layer by Fourier's law, with the thermal resistance and what it costs over a day and a year.
- Heat & FluidsLatent Heat CalculatorThe energy needed to melt or boil something, and how long a given heater would take to do it.
- Heat & FluidsPipe Flow Velocity CalculatorFlow velocity inside a pipe from the flow rate and the internal diameter.
- Heat & FluidsHeat Energy CalculatorEnergy needed to change the temperature of a mass, in megajoules and kilowatt-hours.
- Heat & FluidsContinuity Equation CalculatorHow fast a fluid speeds up when the pipe narrows, with the flow rate, the areas and the pressure it trades away.
- Heat & FluidsConvection Heat Transfer CalculatorHeat carried away from a surface by air or water, from Newton's law of cooling, with the area or coefficient you would need.
- Heat & FluidsFirst Law of Thermodynamics CalculatorThe change in internal energy from the heat going in and the work coming out, with the temperature change it implies.
- Heat & FluidsHydrostatic Pressure CalculatorPressure at a depth in a liquid, as gauge pressure and as absolute pressure.
- Heat & FluidsReynolds Number CalculatorReynolds number for pipe flow, the critical speed and an estimated friction factor.
- Heat & FluidsThermal Expansion CalculatorHow much a bar, rail or pipe grows when its temperature rises.
- Heat & FluidsBernoulli Equation CalculatorDownstream pressure from upstream conditions, with the velocity and height contributions shown separately.
- Heat & FluidsDarcy-Weisbach Head Loss CalculatorFriction head loss and pressure drop along a pipe, with the flow rate and the power it costs.
- Heat & FluidsCarnot Efficiency CalculatorMaximum theoretical efficiency of a heat engine between two temperatures, plus the ideal COP of a fridge and a heat pump.
- Heat & FluidsTerminal Velocity CalculatorSteady falling speed at which air resistance exactly balances weight.
- Heat & FluidsBuoyancy CalculatorUpthrust on a submerged body, the net weight in the fluid and how much of it floats below the surface.
- Heat & FluidsIdeal Gas Law CalculatorAmount of substance from pressure, volume and temperature, with the molar volume.
- Heat & FluidsStefan-Boltzmann Radiation CalculatorHeat radiated by a hot surface, the net loss to its surroundings and the wavelength it peaks at.
- Heat & FluidsWien's Displacement Law CalculatorWavelength at which a hot body radiates most strongly, with the matching frequency and photon energy.
- Heat & FluidsPipe Friction Factor CalculatorThe Darcy friction factor from pipe diameter, wall roughness and Reynolds number, using the Swamee-Jain equation.
- Heat & FluidsHazen-Williams Head Loss CalculatorHead loss, pressure drop and velocity in a water pipe from flow rate, diameter, length and the C roughness coefficient.
- Heat & FluidsCOP, EER and kW/ton ConverterConvert coefficient of performance, energy efficiency ratio and kilowatts per ton of refrigeration.
- Heat & FluidsThermal Conductivity ConverterConvert W/(m·K), BTU/(h·ft·°F), BTU·in/(h·ft²·°F) and kcal/(h·m·°C).
- Heat & FluidsCooling Time Calculator (Lumped Capacitance)Temperature of a part after a given time in air or a bath, plus its thermal time constant and Biot number.
- Heat & FluidsHeat Transfer Coefficient ConverterConvert W/(m²·K), BTU/(h·ft²·°F) and kcal/(h·m²·°C).