Example engineering calculations
Worked, unit-aware calculation worksheets across structural, mechanical, electrical and more. Open any example into your own workspace to edit and reuse.
39 examples found
Specific Heat from Test Data
Specific heat capacity of a material from measured heat, mass and temperature rise.
Refrigeration Cooling Capacity
Cooling capacity of a refrigeration cycle from refrigerant flow and enthalpy change.
Air Mass Flow Rate
Mass flow of air in a duct from its density and volumetric flow.
Fan Power
Shaft power of a fan from the pressure rise, flow and efficiency.
Duct Air Velocity
Air velocity in a duct from the volume flow and duct area.
Sensible Cooling Load
Sensible cooling load on an air stream from its mass flow and temperature drop.
Adiabatic Mixing of Two Air Streams
Temperature of two mixed air streams from a mass-weighted average.
Heat Exchanger Effectiveness
Effectiveness of a heat exchanger from the hot-stream temperatures.
Steam Mass from Heat Duty
Steam mass required to deliver a heat duty via its latent heat.
Thermal Diffusivity
Thermal diffusivity of a material from its conductivity, density and specific heat.
Volumetric Thermal Expansion
Change in volume of a liquid or solid from a temperature change.
Power Plant Heat Rate
Heat rate of a power plant — fuel energy per unit of electricity generated.
Boiler Efficiency
Boiler efficiency from useful heat output and fuel energy input.
Net Radiation Between Surfaces
Net radiative heat exchange between a hot surface and cooler surroundings.
Otto Cycle Efficiency
Ideal thermal efficiency of the Otto (petrol-engine) cycle.